Shinzo Yamakawa

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Coated optical fiber, fabrication process thereof and fabrication a...
- Patent number 4,801,186
- Issue date Jan 31, 1989
- Nippon Telegraph & Telephone Public Corporation
- Makoto Wagatsuma
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
UV-ray curable polyurethane composition and coated optical fiber
- Patent number 4,720,529
- Issue date Jan 19, 1988
- Nippon Telegraph & Telephone Corporation
- Takao Kimura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Drawing of polyoxymethylene using dielectric heating
- Patent number 4,497,759
- Issue date Feb 5, 1985
- Nippon Telegraph & Telephone Public Corporation
- Koichi Nakagawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL