AU4708889A - Microwave absorber employing acicular magnetic metallic filaments - Google Patents

Microwave absorber employing acicular magnetic metallic filaments

Info

Publication number: AU4708889A
Authority: AU; Australia
Prior art keywords: magnetic metallic; microwave absorber; metallic filaments; acicular magnetic; absorber employing
Prior art date: 1989-01-26
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.): Granted

Application number

AU47088/89A

Other versions

AU615817B2 (en

Inventor

Eric John Borchers

Charles Edward Boyer III

Charles David Hoyle

Richard Jenten Kuo

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.)

3M Co

Original Assignee

Minnesota Mining and Manufacturing Co

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.)

1989-01-26

Filing date

1989-12-21

Publication date

1990-08-02

1989-12-21 Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co

1990-08-02 Publication of AU4708889A publication Critical patent/AU4708889A/en

1991-10-10 Application granted granted Critical

1991-10-10 Publication of AU615817B2 publication Critical patent/AU615817B2/en

2009-12-21 Anticipated expiration legal-status Critical

Status Ceased legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/005—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using woven or wound filaments; impregnated nets or clothes

AU47088/89A 1989-01-26 1989-12-21 Microwave absorber employing acicular magnetic metallic filaments Ceased AU615817B2 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US30242789A	1989-01-26	1989-01-26
US302427		1989-01-26

Publications (2)

Publication Number	Publication Date
AU4708889A true AU4708889A (en)	1990-08-02
AU615817B2 AU615817B2 (en)	1991-10-10

Family

ID=23167694

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU47088/89A Ceased AU615817B2 (en)	1989-01-26	1989-12-21	Microwave absorber employing acicular magnetic metallic filaments

Country Status (5)

Country	Link
EP (1)	EP0380267B1 (en)
JP (1)	JPH02235396A (en)
AU (1)	AU615817B2 (en)
CA (1)	CA2005198A1 (en)
DE (1)	DE69004109T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5275880A (en) *	1989-05-17	1994-01-04	Minnesota Mining And Manufacturing Company	Microwave absorber for direct surface application
IT1230281B (en) *	1989-06-15	1991-10-18	Sits Soc It Telecom Siemens	PROCEDURE FOR THE CONSTRUCTION OF ABSORBERS FOR ELECTROMAGNETIC FIELDS.
US4972058A (en) *	1989-12-07	1990-11-20	E. I. Du Pont De Nemours And Company	Surface heating food wrap with variable microwave transmission
JPH0935927A (en) *	1995-07-20	1997-02-07	Tokin Corp	Composite magnetic material and electromagnetic interference suppressor using the same
DE19756620A1 (en) *	1997-12-19	1999-06-24	Bosch Gmbh Robert	Preparation of absorber material
ES2274674B1 (en) *	2004-12-24	2008-04-16	Micromag 2000, S.L.	ELECTROMAGNETIC RADIATION ABSORBER BASED ON MAGNETIC MICROWAVES.
DE102007011590B4 (en) *	2007-03-08	2008-12-04	Genesis Adaptive Systeme Deutschland Gmbh	Material composite for the EMC shielding
CN105670370B (en) *	2016-01-04	2017-11-03	北京环境特性研究所	A kind of wool top molded breadth frequency stealth material
CN110854545B (en) *	2019-10-29	2021-03-16	南京邮电大学	Frequency band transfer wave absorber based on mercury expansion with heat and contraction with cold regulation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4538151A (en) *	1982-03-31	1985-08-27	Nippon Electric Co., Ltd.	Electro-magnetic wave absorbing material
US4507224A (en) *	1982-12-03	1985-03-26	Agency Of Industrial Science & Technology	Ceramics containing fibers of silicon carbide
EP0161245B1 (en) *	1983-11-07	1990-07-25	The Dow Chemical Company	Low density, electromagnetic radiation absorption composition
US4606848A (en) *	1984-08-14	1986-08-19	The United States Of America As Represented By The Secretary Of The Army	Radar attenuating paint
EP0278458A3 (en) *	1987-02-10	1989-12-06	Buchtal Gesellschaft mit beschränkter Haftung	Electrically conducting non-glazed ceramic element in the form of a slab

1989
- 1989-12-12 CA CA 2005198 patent/CA2005198A1/en not_active Abandoned
- 1989-12-21 AU AU47088/89A patent/AU615817B2/en not_active Ceased
1990
- 1990-01-22 DE DE1990604109 patent/DE69004109T2/en not_active Expired - Fee Related
- 1990-01-22 EP EP19900300632 patent/EP0380267B1/en not_active Expired - Lifetime
- 1990-01-25 JP JP2015928A patent/JPH02235396A/en active Pending

Also Published As

Publication number	Publication date
JPH02235396A (en)	1990-09-18
AU615817B2 (en)	1991-10-10
CA2005198A1 (en)	1990-07-26
EP0380267B1 (en)	1993-10-27
DE69004109T2 (en)	1994-05-11
DE69004109D1 (en)	1993-12-02
EP0380267A1 (en)	1990-08-01

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