Nobuhiko Kawatsuki

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Kurashiki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing phase gratings of a combination pattern-re...
- Patent number 4,777,116
- Issue date Oct 11, 1988
- Kuraray Co., Ltd.
- Nobuhiko Kawatsuki
- G02 - OPTICS
Information Patent Grant
Phase gratings of a combination pattern-refraction modification type
- Patent number 4,759,607
- Issue date Jul 26, 1988
- Kuraray Co., Ltd.
- Nobuhiko Kawatsuki
- G02 - OPTICS
Information Patent Grant
Thin film waveguide device and manufacturing method for making same
- Patent number 4,749,245
- Issue date Jun 7, 1988
- Kuraray Co., Ltd.
- Nobuhiko Kawatsuki
- B32 - LAYERED PRODUCTS