Kenichi Donuma

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Koshigaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic component and method of production thereof
- Patent number 6,754,950
- Issue date Jun 29, 2004
- Kabushiki Kaisha Toshiba
- Osamu Furukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electronic component and method of production thereof
- Patent number 6,628,043
- Issue date Sep 30, 2003
- Kabushiki Kaisha Toshiba
- Osamu Furukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electronic component and method of production thereof
- Patent number 6,262,513
- Issue date Jul 17, 2001
- Kabushiki Kaisha Toshiba
- Osamu Furukawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Optical connector
- Patent number 4,759,599
- Issue date Jul 26, 1988
- Kabushiki Kaisha Toshiba
- Yasuhiro Yamaguchi
- G02 - OPTICS
Information Patent Grant
Duplex optical communication module unit
- Patent number 4,695,858
- Issue date Sep 22, 1987
- Tokyo Shibaura Denki Kabushiki Kaisha
- Hatsuo Takezawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Module for a fiber optic link
- Patent number 4,539,476
- Issue date Sep 3, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Kenichi Donuma
- G02 - OPTICS
Information Patent Grant
Method for manufacturing a module for a fiber optic link
- Patent number 4,410,469
- Issue date Oct 18, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Shuhei Katagiri
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Electronic component and method of production thereof
- Publication number 20020149298
- Publication date Oct 17, 2002
- KABUSHIKI KAISHA TOSHIBA
- Osamu Furukawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Electronic component and method of production thereof
- Publication number 20010009342
- Publication date Jul 26, 2001
- KABUSHIKI KAISHA TOSHIBA
- Osamu Furukawa
- H01 - BASIC ELECTRIC ELEMENTS