Shigetoki Sugimoto

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor laser having an etched mirror and a narrow stripe wid...
- Patent number 4,470,143
- Issue date Sep 4, 1984
- Nippon Electric Co., Ltd.
- Mitsuhiro Kitamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bidirectional optical fiber transmission system
- Patent number 4,289,373
- Issue date Sep 15, 1981
- Nippon Electric Co., Ltd.
- Shigetoki Sugimoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light switch
- Patent number 4,265,513
- Issue date May 5, 1981
- Nippon Electric Co., Ltd.
- Shigeo Matsushita
- G02 - OPTICS
Information Patent Grant
Light coupling and branching device using light focusing transmissi...
- Patent number 4,213,677
- Issue date Jul 22, 1980
- Nippon Selfoc Company, Limited
- Shigetoki Sugimoto
- G02 - OPTICS