Katsuya Takeshi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Eyeglasses
- Patent number 8,292,425
- Issue date Oct 23, 2012
- Yamamoto Kogaku Co., Ltd.
- Katsuya Takeshi
- G02 - OPTICS
Information Patent Grant
Eyewear end piece
- Patent number 7,490,934
- Issue date Feb 17, 2009
- Yamamoto Kogaku Co., Ltd.
- Kazuto Yasuhara
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
EYEGLASSES
- Publication number 20100053545
- Publication date Mar 4, 2010
- YAMAMOTO KOGAKU CO., LTD.
- Katsuya TAKESHI
- G02 - OPTICS
Information Patent Application
Eyewear end piece
- Publication number 20070153229
- Publication date Jul 5, 2007
- YAMAMOTO KOGAKU CO., LTD.
- Kazuto Yasuhara
- G02 - OPTICS