Tatsuo Izawa

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Musashino, JP

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Patents Grantslast 30 patents

Information Patent Grant
Plate plastics optical waveguide
- Patent number 5,062,680
- Issue date Nov 5, 1991
- Nippon Telegraph & Telephone Corporation
- Saburo Imamura
- G02 - OPTICS
Information Patent Grant
Method of making glass waveguide for optical circuit
- Patent number 4,425,146
- Issue date Jan 10, 1984
- Nippon Telegraph & Telephone Public Corporation
- Tatsuo Izawa
- G02 - OPTICS
Information Patent Grant
Method for manufacturing an optical fiber preform
- Patent number 4,224,046
- Issue date Sep 23, 1980
- Nippon Telegraph & Telephone Public Corporation
- Tatsuo Izawa
- G02 - OPTICS