Yoshio Sano

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Okaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Transparent optical article and process for preparing same
- Patent number 4,948,854
- Issue date Aug 14, 1990
- Naoyuki Amaya
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Synthetic resin lens
- Patent number 4,930,879
- Issue date Jun 5, 1990
- Nippon Oil & Fats Co., Ltd.
- Takeaki Iryo
- G02 - OPTICS