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Takao Shimizu
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Toda, JP
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last 30 patents
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Patent Grant
Non-hydrous soft contact lens and process for producing the same
Patent number
4,882,403
Issue date
Nov 21, 1989
Japan Synthetic Rubber Co., Ltd.
Tetsuo Itoh
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Non-hydrous soft contact lens and process for producing the same
Patent number
4,737,556
Issue date
Apr 12, 1988
Japan Synthetic Rubber Co., Ltd.
Tetsuo Itoh
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing shaped articles having improved surfaces
Patent number
4,550,001
Issue date
Oct 29, 1985
Japan Synthetic Rubber Co., Ltd.
Taro Suminoe
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Process for producing colored contact lens
Patent number
4,494,954
Issue date
Jan 22, 1985
Japan Synthetic Rubber Co., Ltd.
Taro Suminoe
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL