Fumiaki Koizumi

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Suwa-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
White LED lighting device, and optical lens
- Patent number 8,981,402
- Issue date Mar 17, 2015
- NITTOH KOGAKU K.K.
- Yoshinori Shinohara
- F21 - LIGHTING
Information Patent Grant
Illumination lens
- Patent number 8,579,472
- Issue date Nov 12, 2013
- NITTOH KOGAKU K.K.
- Fumiaki Koizumi
- F21 - LIGHTING
Information Patent Grant
Visual aid
- Patent number 6,972,903
- Issue date Dec 6, 2005
- NITTOH KOGAKU K.K.
- Hideo Hara
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
WHITE LED LIGHTING DEVICE, AND OPTICAL LENS
- Publication number 20120286314
- Publication date Nov 15, 2012
- Nittoh Kogaku K.K.
- Yoshinori Shinohara
- G02 - OPTICS
Information Patent Application
ILLUMINATION LENS
- Publication number 20120113653
- Publication date May 10, 2012
- NITTOH KOGAKU K.K.
- Fumiaki KOIZUMI
- G02 - OPTICS
Information Patent Application
Visual aid
- Publication number 20040179261
- Publication date Sep 16, 2004
- Hideo Hara
- G02 - OPTICS