NO934707L - Fremgangsmåte og innretning for behandling av en oftamologisk linseform - Google Patents
Fremgangsmåte og innretning for behandling av en oftamologisk linseformInfo
- Publication number
- NO934707L NO934707L NO934707A NO934707A NO934707L NO 934707 L NO934707 L NO 934707L NO 934707 A NO934707 A NO 934707A NO 934707 A NO934707 A NO 934707A NO 934707 L NO934707 L NO 934707L
- Authority
- NO
- Norway
- Prior art keywords
- lens
- piece
- mold
- male
- convex
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000003851 corona treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
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
- 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
- B29D11/00192—Demoulding, e.g. separating lenses from mould halves
-
- 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
- B29C33/0055—Moulds or cores; Details thereof or accessories therefor with incorporated overflow cavities
-
- 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
- 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
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
- B29C59/12—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment in an environment other than air
-
- 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
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/005—Using a particular environment, e.g. sterile fluids other than air
-
- 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
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
-
- 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
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/757—Moulds, cores, dies
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Toxicology (AREA)
- Eyeglasses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Steroid Compounds (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Prostheses (AREA)
Abstract
Innretning og fremgangsmåte for retting av akselererte elektroner mot i det minste en del av en overflate på en oftamologisk formdel før formdelen fylles med monomer og linsen polymeriseres. Man har særlig funnet at en generering av ionisert oksygen ved hjelp av en corona-behandlings-elektrode vil øke vedheften av polymeren til den slik behandlede formdel i til- strekkelig grad. I den foretrukne utførelsesform blir flensen rundt linseformens konvekse han-del corona- behandlet slik at når . formelene separeres etter linsepolymeriseringen vil støpegrader av overskytende polymerisert materiale rundt linsehulrommet hefte seg til den nevnte konvekse han-dels flens når linsen fjernes sammen med den konkave hun-del.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/992,884 US5326505A (en) | 1992-12-21 | 1992-12-21 | Method for treating an ophthalmic lens mold |
Publications (2)
Publication Number | Publication Date |
---|---|
NO934707D0 NO934707D0 (no) | 1993-12-20 |
NO934707L true NO934707L (no) | 1994-06-22 |
Family
ID=25538852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO934707A NO934707L (no) | 1992-12-21 | 1993-12-20 | Fremgangsmåte og innretning for behandling av en oftamologisk linseform |
Country Status (28)
Country | Link |
---|---|
US (2) | US5326505A (no) |
EP (1) | EP0604176B1 (no) |
JP (1) | JP3589686B2 (no) |
KR (1) | KR100277411B1 (no) |
CN (1) | CN1073011C (no) |
AT (1) | ATE154782T1 (no) |
AU (1) | AU668611B2 (no) |
BR (1) | BR9305158A (no) |
CA (1) | CA2111740C (no) |
CZ (1) | CZ276193A3 (no) |
DE (1) | DE69311791T2 (no) |
DK (1) | DK0604176T3 (no) |
ES (1) | ES2105140T3 (no) |
FI (1) | FI935737A (no) |
GR (1) | GR1002337B (no) |
GT (1) | GT199300070A (no) |
HK (1) | HK1000661A1 (no) |
HN (1) | HN1993012331A (no) |
HU (1) | HUT65585A (no) |
IL (1) | IL107514A (no) |
MX (1) | MX9400051A (no) |
NO (1) | NO934707L (no) |
NZ (1) | NZ250424A (no) |
PH (1) | PH30113A (no) |
RO (1) | RO113540B1 (no) |
TW (1) | TW339306B (no) |
UY (1) | UY23696A1 (no) |
ZA (1) | ZA939535B (no) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5770119A (en) * | 1992-09-18 | 1998-06-23 | Johnson & Johnson Vision Products, Inc. | Laser demolding method |
US5573715A (en) * | 1992-12-21 | 1996-11-12 | Johnson & Johnson Vision Products, Inc. | Method for treating an ophthalmic lens mold |
DK0657264T3 (da) * | 1993-12-13 | 2000-02-07 | Novartis Ag | Fremgangsmåde og apparat til fremstilling af kontaktlinse |
US5894002A (en) * | 1993-12-13 | 1999-04-13 | Ciba Vision Corporation | Process and apparatus for the manufacture of a contact lens |
IL113826A0 (en) * | 1994-06-10 | 1995-08-31 | Johnson & Johnson Vision Prod | Method and apparatus for demolding ophthalmic contact lenses |
US5850107A (en) * | 1994-06-10 | 1998-12-15 | Johnson & Johnson Vision Products, Inc. | Mold separation method and apparatus |
US5674557A (en) * | 1995-09-29 | 1997-10-07 | Johnson & Johnson Vision Products, Inc. | Method for transiently wetting lens molds in production of contact lens blanks to reduce lens hole defects |
US5849222A (en) * | 1995-09-29 | 1998-12-15 | Johnson & Johnson Vision Products, Inc. | Method for reducing lens hole defects in production of contact lens blanks |
CN100368172C (zh) * | 1998-04-28 | 2008-02-13 | 花王株式会社 | 模制品的制造方法 |
US6610220B1 (en) | 1998-12-28 | 2003-08-26 | Johnson & Johnson Vision Care, Inc. | Process of manufacturing contact lenses with measured exposure to oxygen |
US6942695B1 (en) | 1999-04-05 | 2005-09-13 | Wessley-Jessen Corporation | Biomedical devices with polyimide coating |
US6241929B1 (en) | 1999-07-29 | 2001-06-05 | Razmik L. Akopyan | Method and apparatus for molding three-dimensional objects of complex shape by means of RF heating |
JP4544710B2 (ja) * | 1999-08-27 | 2010-09-15 | 株式会社メニコン | 眼用レンズ物品の成形型及び眼用レンズ物品の製造方法 |
US6444145B1 (en) * | 1999-09-03 | 2002-09-03 | Johnson & Johnson Vision Products, Inc. | Molds for use in contact lens production |
USD458023S1 (en) | 1999-10-13 | 2002-06-04 | Johnson & Johnson Vision Care, Inc. | Contact lens container |
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 |
FR2808167B1 (fr) * | 2000-04-28 | 2005-03-18 | Mars Alimentaire | Procede de realisation de confiseries en vrac |
US6663801B2 (en) * | 2001-04-06 | 2003-12-16 | Johnson & Johnson Vision Care, Inc. | Silicon carbide IR-emitter heating device and method for demolding lenses |
US6708397B2 (en) * | 2001-08-09 | 2004-03-23 | Johnson & Johnson Vision Care, Inc. | Inlay station with alignment assemblies and transfer tubes |
US7223087B2 (en) * | 2002-05-29 | 2007-05-29 | Razmik Akopyan | Microwave molding of polymers |
US7122146B2 (en) * | 2002-05-29 | 2006-10-17 | Akopyan Razmik L | Injection molding of polymers by microwave heating |
US6984352B1 (en) | 2002-05-29 | 2006-01-10 | Akopyan Razmik L | Dielectric mold for uniform heating and molding of polymers and composites in microwave ovens |
US20040004008A1 (en) * | 2002-06-26 | 2004-01-08 | Peck James M. | Contact lens packages |
WO2005032792A1 (ja) * | 2003-10-06 | 2005-04-14 | Menicon Co., Ltd. | 眼用レンズ物品の製造方法及びそれによって得られる眼用レンズ物品、並びに眼用レンズ物品の成形型 |
US20060232766A1 (en) * | 2005-03-31 | 2006-10-19 | Watterson Robert J Jr | Methods of inspecting ophthalmic lenses |
US7682532B2 (en) * | 2005-07-01 | 2010-03-23 | Novartis Ag | Process of dosing a starting material for optical lenses |
US20070284770A1 (en) * | 2006-06-07 | 2007-12-13 | Ansell Scott F | Decreased lens delamination during ophthalmic lens manufacture |
US20090166932A1 (en) * | 2006-10-27 | 2009-07-02 | Dong Wook Lee | Method for Manufacturing Seamless Silicon Roll Having Pattern and Seamless Silicon Roll Produced by the Same |
KR100902772B1 (ko) * | 2006-11-10 | 2009-06-15 | 주식회사 엘지화학 | 이음매가 없으며 양호한 표면을 가지는 패턴화된 실리콘롤의 제조방법 |
US8535043B2 (en) * | 2006-10-30 | 2013-09-17 | Johnson & Johnson Vision Care, Inc. | Molds for use in contact lens production |
WO2009088704A1 (en) * | 2007-12-31 | 2009-07-16 | Bausch & Lomb Incorporated | Casting mold for forming a biomedical device including an ophthalmic device |
WO2012006488A2 (en) | 2010-07-09 | 2012-01-12 | Lee Darren Norris | Ophthalmic lens molds with low levels of uv light transmittance, ophthalmic lenses molded therein, and related methods |
JP2013542089A (ja) | 2010-07-30 | 2013-11-21 | クーパーヴィジョン インターナショナル ホウルディング カンパニー リミテッド パートナーシップ | ビニルアルコールコポリマーで作成された眼科学デバイス成型用の型、その中で成型された眼科学デバイス、および関連する方法 |
WO2012016152A1 (en) | 2010-07-30 | 2012-02-02 | Siddiqui A K M Shahab | Ophthalmic lens molds, ophthalmic lenses molded therein, and related methods |
EP2646228B1 (en) | 2010-12-01 | 2014-09-17 | Novartis AG | Method for producing ophthalmic lenses |
MY164738A (en) | 2011-11-29 | 2018-01-30 | Novartis Ag | Method of treating a lens forming surface of at least one mold half for molding ophthalmic lenses |
JP5621117B2 (ja) | 2012-06-19 | 2014-11-05 | 株式会社メニコンネクト | 多層コンタクトレンズおよびその製造方法 |
KR102029669B1 (ko) * | 2012-06-29 | 2019-10-08 | 존슨 앤드 존슨 비젼 케어, 인코포레이티드 | 안과용 렌즈의 제조를 위한 특징부들을 갖는 렌즈 전구체 |
US20150151500A1 (en) * | 2013-12-03 | 2015-06-04 | Johnson & Johnson Vision Care, Inc. | Method for treating a contact lens mold |
CN108541232B (zh) * | 2015-12-22 | 2021-04-09 | 爱尔康公司 | 用于制造接触镜片的方法 |
JP6790620B2 (ja) * | 2016-09-07 | 2020-11-25 | 富士ゼロックス株式会社 | 成形品の製造方法、光学部材の製造方法 |
CN114953308A (zh) * | 2022-04-29 | 2022-08-30 | 安徽熹贾精密技术有限公司 | 一种飞边自动分离的模具及其控制方法 |
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BE520402A (no) * | 1952-06-03 | 1900-01-01 | ||
US3915609A (en) * | 1974-03-18 | 1975-10-28 | American Optical Corp | Molds for casting silicone rubber contact lenses |
US4113224A (en) * | 1975-04-08 | 1978-09-12 | Bausch & Lomb Incorporated | Apparatus for forming optical lenses |
US4017238A (en) * | 1975-04-21 | 1977-04-12 | American Optical Corporation | Mold for casting contact lenses utilizing and electron beam to polymerize the resin lens |
US4121896A (en) * | 1976-03-24 | 1978-10-24 | Shepherd Thomas H | Apparatus for the production of contact lenses |
JPS55123428A (en) * | 1979-03-16 | 1980-09-22 | Hoya Corp | Release of plastic lens from glass mold |
US4495313A (en) * | 1981-04-30 | 1985-01-22 | Mia Lens Production A/S | Preparation of hydrogel for soft contact lens with water displaceable boric acid ester |
US4565348A (en) * | 1981-04-30 | 1986-01-21 | Mia-Lens Production A/S | Mold for making contact lenses, the male mold member being more flexible than the female mold member |
US4815690A (en) * | 1988-02-09 | 1989-03-28 | Shepherd Thomas H | Apparatus for the production of monolithic intraocular implants |
JPH0288205A (ja) * | 1988-09-27 | 1990-03-28 | Dainippon Ink & Chem Inc | 光ディスク基板の製造方法 |
US5039459A (en) * | 1988-11-25 | 1991-08-13 | Johnson & Johnson Vision Products, Inc. | Method of forming shaped hydrogel articles including contact lenses |
US4889664A (en) * | 1988-11-25 | 1989-12-26 | Vistakon, Inc. | Method of forming shaped hydrogel articles including contact lenses |
IL97175A (en) * | 1990-03-16 | 1996-01-31 | Ciba Geigy | Pattern for casting contact lenses |
AU633749B2 (en) * | 1990-08-02 | 1993-02-04 | Novartis Ag | Contact lens casting |
US5158718A (en) * | 1990-08-02 | 1992-10-27 | Pilkington Visioncare, Inc. | Contact lens casting |
IT1247009B (it) * | 1991-05-06 | 1994-12-12 | Proel Tecnologie Spa | Metodo per la realizzazione di manufatti in resina o materiale composito con matrice in resina polimerizzabile con fasci elettronici |
US5294379A (en) * | 1992-09-18 | 1994-03-15 | Johnson & Johnson Vision Products, Inc. | Laser assisted demolding of ophthalmic lenses |
-
1992
- 1992-12-21 US US07/992,884 patent/US5326505A/en not_active Expired - Lifetime
-
1993
- 1993-11-05 IL IL107514A patent/IL107514A/xx not_active IP Right Cessation
- 1993-11-08 PH PH47220A patent/PH30113A/en unknown
- 1993-11-24 HU HU9303337A patent/HUT65585A/hu unknown
- 1993-12-01 GR GR930100478A patent/GR1002337B/el unknown
- 1993-12-10 NZ NZ250424A patent/NZ250424A/en unknown
- 1993-12-15 CZ CZ932761A patent/CZ276193A3/cs unknown
- 1993-12-15 GT GT199300070A patent/GT199300070A/es unknown
- 1993-12-15 AU AU52424/93A patent/AU668611B2/en not_active Expired
- 1993-12-16 HN HN1993012331A patent/HN1993012331A/es unknown
- 1993-12-17 TW TW082110691A patent/TW339306B/zh not_active IP Right Cessation
- 1993-12-17 RO RO93-01721A patent/RO113540B1/ro unknown
- 1993-12-17 UY UY23696A patent/UY23696A1/es unknown
- 1993-12-17 KR KR1019930028175A patent/KR100277411B1/ko not_active IP Right Cessation
- 1993-12-17 CA CA002111740A patent/CA2111740C/en not_active Expired - Lifetime
- 1993-12-20 DE DE69311791T patent/DE69311791T2/de not_active Expired - Lifetime
- 1993-12-20 AT AT93310336T patent/ATE154782T1/de active
- 1993-12-20 EP EP93310336A patent/EP0604176B1/en not_active Expired - Lifetime
- 1993-12-20 NO NO934707A patent/NO934707L/no unknown
- 1993-12-20 FI FI935737A patent/FI935737A/fi not_active Application Discontinuation
- 1993-12-20 ES ES93310336T patent/ES2105140T3/es not_active Expired - Lifetime
- 1993-12-20 ZA ZA939535A patent/ZA939535B/xx unknown
- 1993-12-20 BR BR9305158A patent/BR9305158A/pt not_active IP Right Cessation
- 1993-12-20 DK DK93310336.8T patent/DK0604176T3/da active
- 1993-12-20 JP JP34480493A patent/JP3589686B2/ja not_active Expired - Lifetime
- 1993-12-21 CN CN93112966A patent/CN1073011C/zh not_active Expired - Lifetime
-
1994
- 1994-01-03 MX MX9400051A patent/MX9400051A/es not_active IP Right Cessation
- 1994-03-30 US US08/220,079 patent/US5466144A/en not_active Expired - Lifetime
-
1997
- 1997-11-26 HK HK97102249A patent/HK1000661A1/xx not_active IP Right Cessation
Also Published As
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