Takeshi Kojima

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light-guiding panel for surface lighting and a surface lighting body
- Patent number 5,555,160
- Issue date Sep 10, 1996
- Nissen Chemitec Co., Ltd.
- Nobuyoshi Tawara
- G02 - OPTICS
Information Patent Grant
Surface illuminating apparatus
- Patent number 5,377,084
- Issue date Dec 27, 1994
- T. Chatani & Co., Ltd.
- Takeshi Kojima
- G02 - OPTICS
Information Patent Grant
Surface illuminating apparatus
- Patent number 4,860,171
- Issue date Aug 22, 1989
- T. Chatani & Co., Ltd.
- Takeshi Kojima
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS