Naoyuki Ishii

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Okazaki-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Plastic lens for spectacles
- Patent number 7,178,919
- Issue date Feb 20, 2007
- Tokai Kogaku Co., Ltd.
- Yuji Kato
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Plastic lens for spectacles
- Publication number 20060158747
- Publication date Jul 20, 2006
- Yuji Kato
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL