Tsutomu Yamashita

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
UV-curable Fresnel lens resin composition, Fresnel lens, and back p...
- Patent number 5,903,399
- Issue date May 11, 1999
- Sanyo Chemical Industries, Ltd.
- Tsutomu Yamashita
- G02 - OPTICS
Information Patent Grant
UV-curable fresnel lens resin composition, fresnel lens, and back p...
- Patent number 5,805,358
- Issue date Sep 8, 1998
- Sanyo Chemical Industries, Ltd.
- Tsutomu Yamashita
- G02 - OPTICS