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CA2128158A1 - Process and Device for the Manufacture of Mouldings and Mouldings Manufactured in Accordance with That Process - Google Patents

Process and Device for the Manufacture of Mouldings and Mouldings Manufactured in Accordance with That Process

Info

Publication number
CA2128158A1
CA2128158A1 CA2128158A CA2128158A CA2128158A1 CA 2128158 A1 CA2128158 A1 CA 2128158A1 CA 2128158 A CA2128158 A CA 2128158A CA 2128158 A CA2128158 A CA 2128158A CA 2128158 A1 CA2128158 A1 CA 2128158A1
Authority
CA
Canada
Prior art keywords
mould
mouldings
cavity
impingement
manufacture
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.)
Granted
Application number
CA2128158A
Other languages
French (fr)
Other versions
CA2128158C (en
Inventor
Peter Hagmann
Sharla Borghorst
John Golby
Peter Herbrechtsmeier
Otto Kretzschmar
Bernhard Seiferling
Norbert Sollner
Beat Muller
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of CA2128158A1 publication Critical patent/CA2128158A1/en
Application granted granted Critical
Publication of CA2128158C publication Critical patent/CA2128158C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/041—Feeding of the material to be moulded, e.g. into a mould cavity using filling or dispensing heads placed in closed moulds or in contact with mould walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0888—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds
    • B29C35/0894—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds provided with masks or diaphragms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • B29C37/0007—Discharging moulded articles from the mould using means operable from outside the mould for moving between mould parts, e.g. robots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/005—Compensating volume or shape change during moulding, in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/36—Removing moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/42—Casting under special conditions, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00057—Production of contact lenses characterised by the shape or surface condition of the edge, e.g. flashless, burrless, smooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00134—Curing of the contact lens material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
    • B29D11/00442—Curing the lens material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/303—Mounting, exchanging or centering centering mould parts or halves, e.g. during mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B29L2011/0041—Contact lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Robotics (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Ceramic Products (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Processing Of Solid Wastes (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A measured amount of a material that is crosslinkable by impingement of a suitable form of energy, especially UV light (3), is introduced into a two-part mould (1) of which the cavity (15) determines the shape of a moulding (CL) to be produced. The two mould halves (11, 12) are held a small distance from one another so that a thin annular gap (16) is formed between them, which gap is in communication with the mould cavity (15) and through which gap excess material can escape. The crosslinking is triggered by impingement of the selected form of energy, the impingement being spatially restricted to the cavity (15) by suitable moulding (21) so that material disposed outside the mould cavity is not crosslinked. In that manner mouldings are obtained that do not require subsequent mechanical processing, and the mould is reusable. The process is especially, but not, however, exclusively, suitable for the manufacture of contact lenses.
CA002128158A 1993-07-19 1994-07-15 Process and device for the manufacture of mouldings and mouldings manufactured in accordance with that process Expired - Lifetime CA2128158C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP93810515.2 1993-07-19
EP93810515 1993-07-19
CH229993 1993-07-29
CH2299/93-3 1993-07-29
CH235093 1993-08-06
CH2350/93-0 1993-08-06

Publications (2)

Publication Number Publication Date
CA2128158A1 true CA2128158A1 (en) 1995-01-20
CA2128158C CA2128158C (en) 1999-01-19

Family

ID=27173603

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002128158A Expired - Lifetime CA2128158C (en) 1993-07-19 1994-07-15 Process and device for the manufacture of mouldings and mouldings manufactured in accordance with that process

Country Status (19)

Country Link
EP (1) EP0637490B1 (en)
JP (1) JP3257903B2 (en)
KR (1) KR100324881B1 (en)
CN (1) CN1058658C (en)
AT (1) ATE178255T1 (en)
AU (1) AU682365B2 (en)
CA (1) CA2128158C (en)
CZ (1) CZ288697B6 (en)
DE (1) DE59408026D1 (en)
DK (1) DK0637490T3 (en)
ES (1) ES2130384T3 (en)
FI (1) FI105792B (en)
GR (1) GR3030516T3 (en)
HU (1) HU216616B (en)
IL (1) IL110281A (en)
NO (1) NO310760B1 (en)
NZ (1) NZ264031A (en)
PL (1) PL304314A1 (en)
SG (1) SG49612A1 (en)

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AU702612B2 (en) * 1995-02-02 1999-02-25 Novartis Ag Process for the manufacture of moulded articles that are partly coloured or have regions of different colours
TW349967B (en) * 1995-02-03 1999-01-11 Novartis Ag Process for producing contact lenses and a cross-linkable polyvinylalcohol used therefor
TW360671B (en) * 1995-02-03 1999-06-11 Novartis Ag Process for producing mold body and the cross-linkable polymer used therein
AU4438696A (en) * 1995-02-03 1996-08-21 Novartis Ag Crosslinked polymers
WO1997017182A1 (en) * 1995-11-09 1997-05-15 Ucb, S.A. Method for producing an optical article using visible light radiation
TW448205B (en) * 1996-05-23 2001-08-01 Novartis Ag Process for the manufacture of storage-stable hydrogel-moldings
EP0921922A1 (en) * 1996-07-24 1999-06-16 Novartis AG Process for producing mouldings
JP2002515837A (en) * 1996-11-06 2002-05-28 ボシュ アンド ロム インコーポレイテッド Method and apparatus for separating contact lens from mold part
DE19706846A1 (en) * 1997-02-21 1998-09-03 Bodenseewerk Geraetetech Device for light-initiated chemical crosslinking of material
CN1075439C (en) * 1997-03-25 2001-11-28 诺瓦提斯公司 Molding processes
US6113817A (en) * 1997-03-25 2000-09-05 Novartis Ag Molding processes
DE19717014A1 (en) * 1997-04-23 1998-10-29 Inst Mikrotechnik Mainz Gmbh Process and mold for the production of miniaturized moldings
EP0985157B1 (en) * 1997-05-27 2004-10-06 Novartis AG Composite ophthalmic lens
TW429327B (en) * 1997-10-21 2001-04-11 Novartis Ag Single mould alignment
EP1165304B1 (en) * 1999-03-31 2005-01-19 Novartis AG Mold for forming contact lenses
US6997428B1 (en) 1999-03-31 2006-02-14 Novartis Ag Contact lens mold
WO2001000393A2 (en) * 1999-06-25 2001-01-04 Novartis Ag Uv-illumination device
GB2355686A (en) * 1999-10-25 2001-05-02 Hydron Ltd A method of forming an ophthalmic device
US6368522B1 (en) * 2000-01-03 2002-04-09 Johnson & Johnson Vision Care, Inc. Mold for forming a contact lens and method of preventing formation of small strands of contact lens material during contact lens manufacture
US6558584B1 (en) 2000-03-31 2003-05-06 Bausch & Lomb Incorporated Apparatus and method for handling an ophthalmic lens
US6737661B2 (en) * 2000-08-17 2004-05-18 Novartis Ag Pre-treatment of molds
EP1245372B1 (en) 2001-03-26 2011-09-28 Novartis AG Mould and method for the production of ophthalmic lenses
US20030031548A1 (en) * 2001-08-09 2003-02-13 Parell Phillip King Rigid vacuum tip
US6997693B2 (en) * 2001-10-19 2006-02-14 Novartis Ag Casting mold half and casting mold for producing contact lenses
EP1654543B1 (en) 2003-08-07 2010-07-07 EyeSense AG Ophthalmic sensor
US20050056954A1 (en) * 2003-09-12 2005-03-17 Devlin Brian Gerrard Method for making contact lenses
DE102004010648B4 (en) 2004-02-26 2008-12-04 Jenoptik Laser, Optik, Systeme Gmbh Radiation-permeable mold half for a mold
US8003024B2 (en) * 2006-09-18 2011-08-23 Coopervision International Holding Company, Lp Polyolefin contact lens molds and uses thereof
EP2150398A2 (en) 2007-04-23 2010-02-10 Tessera North America, Inc. Mass production of micro-optical devices, corresponding tools, and resultant structures
DE102007024642A1 (en) 2007-05-24 2008-11-27 Eyesense Ag Hydrogel implant for sensor of metabolites on the eye
US7780879B2 (en) * 2007-12-20 2010-08-24 Novartis Ag Method for making contact lenses
CA2850265C (en) * 2010-11-26 2020-01-14 Daysoft Limited Contact lens manufacturing method
CN103465410B (en) * 2012-06-06 2015-12-09 视霸光学股份有限公司 Ultrasonic demoulding device and its application to the method for manufacturing contact lenses
DE102013207243B4 (en) * 2013-04-22 2019-10-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. DEVICE AND METHOD FOR PRODUCING A STRUCTURE OF CURABLE MATERIAL BY IMPREGNATION
DE102013220097B4 (en) * 2013-10-02 2017-05-11 Smp Deutschland Gmbh Forming tool and forming process for this purpose
JP6380913B2 (en) * 2013-11-14 2018-08-29 コニカミノルタ株式会社 Optical element manufacturing method
EP3083215B1 (en) * 2013-12-20 2021-04-07 Alcon Inc. Reusable castings molds and method of making such molds
CN105204180B (en) * 2015-09-23 2018-01-26 江苏视客光学眼镜有限公司 The manufacture method and device of compound spectacle glass
HUE063934T2 (en) * 2015-12-17 2024-02-28 Alcon Inc Reusable lens molds and methods of use thereof
KR101825078B1 (en) * 2016-05-09 2018-02-02 (주)티이바이오스 Mold for manufacturing artificial cornea and method of manufacturing artificial cornea using the same
FR3051136A1 (en) * 2016-05-10 2017-11-17 Roctool METHOD AND DEVICE FOR HEATING A MOLD
EP3697588B1 (en) * 2017-10-17 2024-04-03 Magic Leap, Inc. A system for molding a photocurable material into a planar object
CN117141017B (en) * 2018-10-16 2024-08-30 奇跃公司 Method and apparatus for casting polymer products
CN111483099B (en) * 2019-01-25 2022-05-10 优你康光学股份有限公司 Mold for demolding contact lenses and method thereof
CN109895311B (en) * 2019-04-19 2021-03-02 浙江宝祥工贸有限公司 Cylindrical forming die
CN110435057A (en) * 2019-08-20 2019-11-12 瑞声科技(新加坡)有限公司 For forming the mold of wafer eyeglass

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US4113224A (en) * 1975-04-08 1978-09-12 Bausch & Lomb Incorporated Apparatus for forming optical lenses
EP0226123A3 (en) * 1985-12-03 1988-08-10 Matsushita Electric Industrial Co., Ltd. Method for producing transparent plastic article
JPS6334108A (en) * 1986-07-30 1988-02-13 Hitachi Ltd Manufacturing method and device for optical disk substrate
ES2108208T3 (en) * 1988-11-02 1997-12-16 British Tech Group CASTED CASTING AND CONTACT LENSES PACKAGING.
DE69113392T2 (en) * 1990-10-30 1996-05-15 Minnesota Mining & Mfg Procedures for networking conspicuous objects.

Also Published As

Publication number Publication date
DE59408026D1 (en) 1999-05-06
HUT69316A (en) 1995-09-28
ATE178255T1 (en) 1999-04-15
FI943375A7 (en) 1995-01-20
IL110281A0 (en) 1994-10-21
GR3030516T3 (en) 1999-10-29
DK0637490T3 (en) 1999-10-11
JP3257903B2 (en) 2002-02-18
CZ172694A3 (en) 1995-11-15
PL304314A1 (en) 1995-01-23
CZ288697B6 (en) 2001-08-15
HU216616B (en) 1999-07-28
AU6753894A (en) 1995-01-27
NO942691D0 (en) 1994-07-18
JPH0768563A (en) 1995-03-14
AU682365B2 (en) 1997-10-02
SG49612A1 (en) 2003-03-18
FI943375A0 (en) 1994-07-15
HU9402122D0 (en) 1994-09-28
KR100324881B1 (en) 2002-10-25
NZ264031A (en) 1996-03-26
EP0637490B1 (en) 1999-03-31
IL110281A (en) 1998-10-30
ES2130384T3 (en) 1999-07-01
KR950002966A (en) 1995-02-16
NO942691L (en) 1995-01-20
FI105792B (en) 2000-10-13
CN1108999A (en) 1995-09-27
CN1058658C (en) 2000-11-22
NO310760B1 (en) 2001-08-27
CA2128158C (en) 1999-01-19
EP0637490A1 (en) 1995-02-08

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Effective date: 20140715