Nobumasa Kuwashima

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Yamaguchi-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photochromic optical article and method of producing the same
- Patent number 7,951,445
- Issue date May 31, 2011
- Tokuyama Corporation
- Shinobu Izumi
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Photochromic Optical Article and Method of Producing the Same
- Publication number 20080226883
- Publication date Sep 18, 2008
- Tokuyama Corporation
- Shinobu Izumi
- G02 - OPTICS