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Kyoichi Tanaka
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Nagoya, JP
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last 30 patents
Information
Patent Grant
Contact lens wherein central correction region has a center 0.2-2.4...
Patent number
5,422,687
Issue date
Jun 6, 1995
Menicon Co., Ltd.
Kyoichi Tanaka
G02 - OPTICS
Information
Patent Grant
Contact lens cleaning and storage composition
Patent number
4,500,441
Issue date
Feb 19, 1985
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Contact lens and process for preparing the same
Patent number
4,451,629
Issue date
May 29, 1984
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Cleaning and preservative solution for contact lenses
Patent number
4,259,202
Issue date
Mar 31, 1981
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Polymer for contact lens and contact lens made thereof
Patent number
4,235,985
Issue date
Nov 25, 1980
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of coloring water-absorbable plastics and colored water-abso...
Patent number
4,157,892
Issue date
Jun 12, 1979
Toyo Contact Lens Company, Limited
Kyoichi Tanaka
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Copolymer for soft contact lens, its preparation and soft contact l...
Patent number
4,139,513
Issue date
Feb 13, 1979
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate
Patent number
4,139,548
Issue date
Feb 13, 1979
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Copolymer for contact lens, its preparation and contact lens made t...
Patent number
4,139,692
Issue date
Feb 13, 1979
Toyo Contact Lens Co., Ltd.
Kyoichi Tanaka
C07 - ORGANIC CHEMISTRY