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GB2399466B - Battery charging system - Google Patents

Battery charging system

Info

Publication number
GB2399466B
GB2399466B GB0305428A GB0305428A GB2399466B GB 2399466 B GB2399466 B GB 2399466B GB 0305428 A GB0305428 A GB 0305428A GB 0305428 A GB0305428 A GB 0305428A GB 2399466 B GB2399466 B GB 2399466B
Authority
GB
United Kingdom
Prior art keywords
charging system
battery charging
battery
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB0305428A
Other versions
GB2399466A (en
GB0305428D0 (en
Inventor
Shu-Yuen Ron Hui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
City University of Hong Kong CityU
Original Assignee
City University of Hong Kong CityU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by City University of Hong Kong CityU filed Critical City University of Hong Kong CityU
Priority to GB0305428A priority Critical patent/GB2399466B/en
Publication of GB0305428D0 publication Critical patent/GB0305428D0/en
Priority to PCT/AU2003/000721 priority patent/WO2003105308A1/en
Priority to EP03724675.8A priority patent/EP1547222B1/en
Priority to EP13175154.7A priority patent/EP2685594B1/en
Priority to AU2003229145A priority patent/AU2003229145A1/en
Priority to EP12002623.2A priority patent/EP2479866B1/en
Publication of GB2399466A publication Critical patent/GB2399466A/en
Priority to US11/009,478 priority patent/US7164255B2/en
Application granted granted Critical
Publication of GB2399466B publication Critical patent/GB2399466B/en
Priority to US11/610,860 priority patent/US7576514B2/en
Priority to US12/486,572 priority patent/US7872445B2/en
Priority to US12/950,814 priority patent/US8269456B2/en
Priority to US13/269,936 priority patent/US8917057B2/en
Priority to US13/426,525 priority patent/US8299753B2/en
Priority to US13/622,278 priority patent/US8519668B2/en
Priority to US14/542,452 priority patent/US9812889B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/0006—Printed inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J7/70—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/0006—Printed inductances
    • H01F2017/008—Electric or magnetic shielding of printed inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
GB0305428A 2002-01-11 2003-03-10 Battery charging system Expired - Lifetime GB2399466B (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
GB0305428A GB2399466B (en) 2003-03-10 2003-03-10 Battery charging system
AU2003229145A AU2003229145A1 (en) 2002-06-10 2003-06-10 Planar inductive battery charger
EP03724675.8A EP1547222B1 (en) 2002-06-10 2003-06-10 Planar inductive battery charger
EP13175154.7A EP2685594B1 (en) 2002-06-10 2003-06-10 Planar inductive battery charger
PCT/AU2003/000721 WO2003105308A1 (en) 2002-01-11 2003-06-10 Planar inductive battery charger
EP12002623.2A EP2479866B1 (en) 2002-06-10 2003-06-10 Planar inductive battery charger
US11/009,478 US7164255B2 (en) 2002-06-10 2004-12-10 Inductive battery charger system with primary transformer windings formed in a multi-layer structure
US11/610,860 US7576514B2 (en) 2002-06-10 2006-12-14 Planar inductive battery charging system
US12/486,572 US7872445B2 (en) 2002-06-10 2009-06-17 Rechargeable battery powered portable electronic device
US12/950,814 US8269456B2 (en) 2002-06-10 2010-11-19 Secondary module for battery charging system
US13/269,936 US8917057B2 (en) 2002-06-10 2011-10-10 Battery charging system
US13/426,525 US8299753B2 (en) 2002-06-10 2012-03-21 Inductive battery charger system with primary transfomer windings formed in a multi-layer structure
US13/622,278 US8519668B2 (en) 2002-06-10 2012-09-18 Inductive battery charger system with primary transformer windings formed in a multi-layer structure
US14/542,452 US9812889B2 (en) 2002-06-10 2014-11-14 Battery charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0305428A GB2399466B (en) 2003-03-10 2003-03-10 Battery charging system

Publications (3)

Publication Number Publication Date
GB0305428D0 GB0305428D0 (en) 2003-04-16
GB2399466A GB2399466A (en) 2004-09-15
GB2399466B true GB2399466B (en) 2005-11-16

Family

ID=9954466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0305428A Expired - Lifetime GB2399466B (en) 2002-01-11 2003-03-10 Battery charging system

Country Status (1)

Country Link
GB (1) GB2399466B (en)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2146414A1 (en) 2008-07-16 2010-01-20 ConvenientPower HK Limited Inductively powered sleeve for mobile electronic device
US7906936B2 (en) 2007-10-09 2011-03-15 Powermat Ltd. Rechargeable inductive charger
USD640976S1 (en) 2008-08-28 2011-07-05 Hewlett-Packard Development Company, L.P. Support structure and/or cradle for a mobile computing device
US8049370B2 (en) 2007-09-25 2011-11-01 Powermat Ltd. Centrally controlled inductive power transmission platform
US8090550B2 (en) 2007-03-22 2012-01-03 Powermat, Ltd. Efficiency monitor for inductive power transmission
US8188619B2 (en) 2008-07-02 2012-05-29 Powermat Technologies Ltd Non resonant inductive power transmission system and method
US8234509B2 (en) 2008-09-26 2012-07-31 Hewlett-Packard Development Company, L.P. Portable power supply device for mobile computing devices
US8283812B2 (en) 2007-10-09 2012-10-09 Powermat Technologies, Ltd. Inductive power providing system having moving outlets
US8305741B2 (en) 2009-01-05 2012-11-06 Hewlett-Packard Development Company, L.P. Interior connector scheme for accessorizing a mobile computing device with a removeable housing segment
US8320143B2 (en) 2008-04-15 2012-11-27 Powermat Technologies, Ltd. Bridge synchronous rectifier
US8319925B2 (en) 2008-07-08 2012-11-27 Powermat Technologies, Ltd. Encapsulated pixels for display device
US8385822B2 (en) 2008-09-26 2013-02-26 Hewlett-Packard Development Company, L.P. Orientation and presence detection for use in configuring operations of computing devices in docked environments
US8395547B2 (en) 2009-08-27 2013-03-12 Hewlett-Packard Development Company, L.P. Location tracking for mobile computing device
US8401469B2 (en) 2008-09-26 2013-03-19 Hewlett-Packard Development Company, L.P. Shield for use with a computing device that receives an inductive signal transmission
US8437695B2 (en) 2009-07-21 2013-05-07 Hewlett-Packard Development Company, L.P. Power bridge circuit for bi-directional inductive signaling
USD687038S1 (en) 2009-11-17 2013-07-30 Palm, Inc. Docking station for a computing device
US8527688B2 (en) 2008-09-26 2013-09-03 Palm, Inc. Extending device functionality amongst inductively linked devices
US8536737B2 (en) 2007-11-19 2013-09-17 Powermat Technologies, Ltd. System for inductive power provision in wet environments
US8618695B2 (en) 2008-06-02 2013-12-31 Powermat Technologies, Ltd Appliance mounted power outlets
US8629577B2 (en) 2007-01-29 2014-01-14 Powermat Technologies, Ltd Pinless power coupling
US8688037B2 (en) 2008-09-26 2014-04-01 Hewlett-Packard Development Company, L.P. Magnetic latching mechanism for use in mating a mobile computing device to an accessory device
US8712324B2 (en) 2008-09-26 2014-04-29 Qualcomm Incorporated Inductive signal transfer system for computing devices
US8755815B2 (en) 2010-08-31 2014-06-17 Qualcomm Incorporated Use of wireless access point ID for position determination
US8850045B2 (en) 2008-09-26 2014-09-30 Qualcomm Incorporated System and method for linking and sharing resources amongst devices
US8868939B2 (en) 2008-09-26 2014-10-21 Qualcomm Incorporated Portable power supply device with outlet connector
US8954001B2 (en) 2009-07-21 2015-02-10 Qualcomm Incorporated Power bridge circuit for bi-directional wireless power transmission
US8981598B2 (en) 2008-07-02 2015-03-17 Powermat Technologies Ltd. Energy efficient inductive power transmission system and method
US9035501B2 (en) 2008-03-17 2015-05-19 Powermat Technologies, Ltd. System and method for providing simple feedback signals indicating if more or less power is required during inductive power transmission
US9083686B2 (en) 2008-11-12 2015-07-14 Qualcomm Incorporated Protocol for program during startup sequence
US9097544B2 (en) 2009-08-27 2015-08-04 Qualcomm Incorporated Location tracking for mobile computing device
US9124121B2 (en) 2008-09-23 2015-09-01 Powermat Technologies, Ltd. Combined antenna and inductive power receiver
US9201457B1 (en) 2001-05-18 2015-12-01 Qualcomm Incorporated Synchronizing and recharging a connector-less portable computer system
US9331750B2 (en) 2008-03-17 2016-05-03 Powermat Technologies Ltd. Wireless power receiver and host control interface thereof
US9337902B2 (en) 2008-03-17 2016-05-10 Powermat Technologies Ltd. System and method for providing wireless power transfer functionality to an electrical device
US9395827B2 (en) 2009-07-21 2016-07-19 Qualcomm Incorporated System for detecting orientation of magnetically coupled devices
US9960642B2 (en) 2008-03-17 2018-05-01 Powermat Technologies Ltd. Embedded interface for wireless power transfer to electrical devices
US9960640B2 (en) 2008-03-17 2018-05-01 Powermat Technologies Ltd. System and method for regulating inductive power transmission
US10068701B2 (en) 2007-09-25 2018-09-04 Powermat Technologies Ltd. Adjustable inductive power transmission platform
US10523036B2 (en) 2016-12-14 2019-12-31 Shenzhen Yichong Wireless Power Technology Co. Ltd Resonant wireless charging system and method for electric toothbrush
US11979201B2 (en) 2008-07-02 2024-05-07 Powermat Technologies Ltd. System and method for coded communication signals regulating inductive power transmissions

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2388716B (en) 2002-05-13 2004-10-20 Splashpower Ltd Improvements relating to contact-less power transfer
GB0229141D0 (en) 2002-12-16 2003-01-15 Splashpower Ltd Improvements relating to contact-less power transfer
GB2416248B (en) * 2003-05-02 2007-02-21 George Alan Limpkin Apparatus for supplying energy to a load and a related system
WO2007118911A1 (en) * 2006-04-18 2007-10-25 Jose Luis De La Torre Barreiro Radiofrequency-rechargeable emergency battery unit for mobile telephones
ES2317771B1 (en) * 2007-01-09 2010-02-03 Elias Jose Martin Montes CHARGER ORGANIZER.
FI120853B (en) * 2007-09-18 2010-03-31 Powerkiss Oy Energy transfer device and method
WO2009089233A1 (en) 2008-01-07 2009-07-16 Access Business Group International Llc Wireless power adapter for computer
TWI364895B (en) 2008-06-09 2012-05-21 Univ Nat Taipei Technology Wireless power transmitting apparatus
CN102130482A (en) * 2011-03-21 2011-07-20 深圳桑菲消费通信有限公司 General multifunctional wireless charge jacket

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959433A (en) * 1997-08-22 1999-09-28 Centurion Intl., Inc. Universal inductive battery charger system
WO2004055654A2 (en) * 2002-12-16 2004-07-01 Splashpower Limited Adapting portable electrical devices to receive power wirelessly
WO2004073176A2 (en) * 2003-02-04 2004-08-26 Access Business Group International Llc Adapter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959433A (en) * 1997-08-22 1999-09-28 Centurion Intl., Inc. Universal inductive battery charger system
WO2004055654A2 (en) * 2002-12-16 2004-07-01 Splashpower Limited Adapting portable electrical devices to receive power wirelessly
WO2004073176A2 (en) * 2003-02-04 2004-08-26 Access Business Group International Llc Adapter

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9201457B1 (en) 2001-05-18 2015-12-01 Qualcomm Incorporated Synchronizing and recharging a connector-less portable computer system
US11437852B2 (en) 2007-01-29 2022-09-06 Powermat Technologies Ltd. Pinless power coupling
US11611240B2 (en) 2007-01-29 2023-03-21 Powermat Technologies Ltd. Pinless power coupling
US11114895B2 (en) 2007-01-29 2021-09-07 Powermat Technologies, Ltd. Pinless power coupling
US9666360B2 (en) 2007-01-29 2017-05-30 Powermat Technologies, Ltd. Pinless power coupling
US11881717B2 (en) 2007-01-29 2024-01-23 Powermat Technologies Ltd. Pinless power coupling
US8629577B2 (en) 2007-01-29 2014-01-14 Powermat Technologies, Ltd Pinless power coupling
US8441364B2 (en) 2007-03-22 2013-05-14 Powermat Technologies, Ltd Inductive power outlet locator
US8090550B2 (en) 2007-03-22 2012-01-03 Powermat, Ltd. Efficiency monitor for inductive power transmission
US10742076B2 (en) 2007-03-22 2020-08-11 Samsung Electronics Co., Ltd. Inductive power outlet locator
US9362049B2 (en) 2007-03-22 2016-06-07 Powermat Technologies Ltd. Efficiency monitor for inductive power transmission
US8965720B2 (en) 2007-03-22 2015-02-24 Powermat Technologies, Ltd. Efficiency monitor for inductive power transmission
US8749097B2 (en) 2007-03-22 2014-06-10 Powermat Technologies, Ltd System and method for controlling power transfer across an inductive power coupling
US8626461B2 (en) 2007-03-22 2014-01-07 Powermat Technologies, Ltd Efficiency monitor for inductive power transmission
US8456038B2 (en) 2007-09-25 2013-06-04 Powermat Technologies, Ltd Adjustable inductive power transmission platform
US8766488B2 (en) 2007-09-25 2014-07-01 Powermat Technologies, Ltd. Adjustable inductive power transmission platform
US8049370B2 (en) 2007-09-25 2011-11-01 Powermat Ltd. Centrally controlled inductive power transmission platform
US10068701B2 (en) 2007-09-25 2018-09-04 Powermat Technologies Ltd. Adjustable inductive power transmission platform
US8624750B2 (en) 2007-10-09 2014-01-07 Powermat Technologies, Ltd. System and method for inductive power provision over an extended surface
US7906936B2 (en) 2007-10-09 2011-03-15 Powermat Ltd. Rechargeable inductive charger
US8762749B2 (en) 2007-10-09 2014-06-24 Powermat Technologies, Ltd. Inductive receivers for electrical devices
US8283812B2 (en) 2007-10-09 2012-10-09 Powermat Technologies, Ltd. Inductive power providing system having moving outlets
US8193769B2 (en) 2007-10-18 2012-06-05 Powermat Technologies, Ltd Inductively chargeable audio devices
US8536737B2 (en) 2007-11-19 2013-09-17 Powermat Technologies, Ltd. System for inductive power provision in wet environments
US10205346B2 (en) 2008-03-17 2019-02-12 Powermat Technologies Ltd. Wireless power receiver and host control interface thereof
US11837399B2 (en) 2008-03-17 2023-12-05 Powermat Technologies, Ltd. Transmission-guard system and method for an inductive power supply
US9960640B2 (en) 2008-03-17 2018-05-01 Powermat Technologies Ltd. System and method for regulating inductive power transmission
US9960642B2 (en) 2008-03-17 2018-05-01 Powermat Technologies Ltd. Embedded interface for wireless power transfer to electrical devices
US9685795B2 (en) 2008-03-17 2017-06-20 Powermat Technologies Ltd. Transmission-guard system and method for an inductive power supply
US9048696B2 (en) 2008-03-17 2015-06-02 Powermat Technologies, Ltd. Transmission-guard system and method for an inductive power supply
US9035501B2 (en) 2008-03-17 2015-05-19 Powermat Technologies, Ltd. System and method for providing simple feedback signals indicating if more or less power is required during inductive power transmission
US10033231B2 (en) 2008-03-17 2018-07-24 Powermat Technologies Ltd. System and method for providing wireless power transfer functionality to an electrical device
US9337902B2 (en) 2008-03-17 2016-05-10 Powermat Technologies Ltd. System and method for providing wireless power transfer functionality to an electrical device
US9331750B2 (en) 2008-03-17 2016-05-03 Powermat Technologies Ltd. Wireless power receiver and host control interface thereof
US9136734B2 (en) 2008-03-17 2015-09-15 Powermat Technologies, Ltd. Transmission-guard system and method for an inductive power supply
US9083204B2 (en) 2008-03-17 2015-07-14 Powermat Technologies, Ltd. Transmission-guard system and method for an inductive power supply
US8320143B2 (en) 2008-04-15 2012-11-27 Powermat Technologies, Ltd. Bridge synchronous rectifier
US8618695B2 (en) 2008-06-02 2013-12-31 Powermat Technologies, Ltd Appliance mounted power outlets
US9099894B2 (en) 2008-07-02 2015-08-04 Powermat Technologies, Ltd. System and method for coded communication signals regulating inductive power transmission
US8188619B2 (en) 2008-07-02 2012-05-29 Powermat Technologies Ltd Non resonant inductive power transmission system and method
US9006937B2 (en) 2008-07-02 2015-04-14 Powermat Technologies Ltd. System and method for enabling ongoing inductive power transmission
US8981598B2 (en) 2008-07-02 2015-03-17 Powermat Technologies Ltd. Energy efficient inductive power transmission system and method
US8427012B2 (en) 2008-07-02 2013-04-23 Powermat Technologies, Ltd. Non resonant inductive power transmission system and method
US11387688B2 (en) 2008-07-02 2022-07-12 Powermat Technologies, Ltd. System and method for coded communication signals regulating inductive power transmissions
US11979201B2 (en) 2008-07-02 2024-05-07 Powermat Technologies Ltd. System and method for coded communication signals regulating inductive power transmissions
US8319925B2 (en) 2008-07-08 2012-11-27 Powermat Technologies, Ltd. Encapsulated pixels for display device
EP2146414A1 (en) 2008-07-16 2010-01-20 ConvenientPower HK Limited Inductively powered sleeve for mobile electronic device
USD640976S1 (en) 2008-08-28 2011-07-05 Hewlett-Packard Development Company, L.P. Support structure and/or cradle for a mobile computing device
US9124121B2 (en) 2008-09-23 2015-09-01 Powermat Technologies, Ltd. Combined antenna and inductive power receiver
US8850045B2 (en) 2008-09-26 2014-09-30 Qualcomm Incorporated System and method for linking and sharing resources amongst devices
US8401469B2 (en) 2008-09-26 2013-03-19 Hewlett-Packard Development Company, L.P. Shield for use with a computing device that receives an inductive signal transmission
US8868939B2 (en) 2008-09-26 2014-10-21 Qualcomm Incorporated Portable power supply device with outlet connector
US8234509B2 (en) 2008-09-26 2012-07-31 Hewlett-Packard Development Company, L.P. Portable power supply device for mobile computing devices
US8712324B2 (en) 2008-09-26 2014-04-29 Qualcomm Incorporated Inductive signal transfer system for computing devices
US8688037B2 (en) 2008-09-26 2014-04-01 Hewlett-Packard Development Company, L.P. Magnetic latching mechanism for use in mating a mobile computing device to an accessory device
US8385822B2 (en) 2008-09-26 2013-02-26 Hewlett-Packard Development Company, L.P. Orientation and presence detection for use in configuring operations of computing devices in docked environments
US8527688B2 (en) 2008-09-26 2013-09-03 Palm, Inc. Extending device functionality amongst inductively linked devices
US9083686B2 (en) 2008-11-12 2015-07-14 Qualcomm Incorporated Protocol for program during startup sequence
US8305741B2 (en) 2009-01-05 2012-11-06 Hewlett-Packard Development Company, L.P. Interior connector scheme for accessorizing a mobile computing device with a removeable housing segment
US9395827B2 (en) 2009-07-21 2016-07-19 Qualcomm Incorporated System for detecting orientation of magnetically coupled devices
US8437695B2 (en) 2009-07-21 2013-05-07 Hewlett-Packard Development Company, L.P. Power bridge circuit for bi-directional inductive signaling
US8954001B2 (en) 2009-07-21 2015-02-10 Qualcomm Incorporated Power bridge circuit for bi-directional wireless power transmission
US8395547B2 (en) 2009-08-27 2013-03-12 Hewlett-Packard Development Company, L.P. Location tracking for mobile computing device
US9097544B2 (en) 2009-08-27 2015-08-04 Qualcomm Incorporated Location tracking for mobile computing device
USD687038S1 (en) 2009-11-17 2013-07-30 Palm, Inc. Docking station for a computing device
US8755815B2 (en) 2010-08-31 2014-06-17 Qualcomm Incorporated Use of wireless access point ID for position determination
US9191781B2 (en) 2010-08-31 2015-11-17 Qualcomm Incorporated Use of wireless access point ID for position determination
US10523036B2 (en) 2016-12-14 2019-12-31 Shenzhen Yichong Wireless Power Technology Co. Ltd Resonant wireless charging system and method for electric toothbrush

Also Published As

Publication number Publication date
GB2399466A (en) 2004-09-15
GB0305428D0 (en) 2003-04-16

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20230309