Shigeru Oikawa

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical recording media with thermal coloration and process for pro...
- Patent number 4,585,722
- Issue date Apr 29, 1986
- Nippon Telegraph & Telephone Public Corporation
- Akira Morinaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fabrication of a low-loss plastic optical fiber
- Patent number 4,381,269
- Issue date Apr 26, 1983
- Nippon Telegraph and Telephone Public Corporation
- Toshikuni Kaino
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Coordinate input apparatus
- Patent number 4,320,292
- Issue date Mar 16, 1982
- Nippon Telegraph & Telephone Public Corporation
- Shigeru Oikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Polymer optical circuit with optical lead-fibers and method of fabr...
- Patent number 4,240,849
- Issue date Dec 23, 1980
- Nippon Telegraph & Telephone Public Corporation
- Takashi Kurokawa
- G02 - OPTICS