Shigeru Hirai

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Silica based optical waveguide and production method therefor
- Patent number 6,690,872
- Issue date Feb 10, 2004
- Sumitomo Electric Industries, Ltd.
- Takashi Sasaki
- G02 - OPTICS
Information Patent Grant
Optical device module and method for manufacturing the same
- Patent number 5,696,860
- Issue date Dec 9, 1997
- Sumitomo Electric Industries, Ltd.
- Shigeru Semura
- G02 - OPTICS
Information Patent Grant
Coupling structure of optical fibers and optical waveguides
- Patent number 5,513,290
- Issue date Apr 30, 1996
- Sumitomo Electric Industries, Ltd.
- Shinji Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical waveguide module and method of manufacturing the same
- Patent number 5,481,632
- Issue date Jan 2, 1996
- Sumitomo Electric Industries, Ltd.
- Shigeru Hirai
- G02 - OPTICS
Information Patent Grant
Method for assembling optical isolator and method for measuring iso...
- Patent number 5,471,306
- Issue date Nov 28, 1995
- Sumitomo Electric Industries, Ltd.
- Dai Yui
- G02 - OPTICS
Information Patent Grant
Optical isolator
- Patent number 5,408,491
- Issue date Apr 18, 1995
- Sumitomo Electric Industries, Ltd.
- Shigeru Hirai
- G02 - OPTICS
Information Patent Grant
Optical fiber rod lens device and method of making same
- Patent number 5,384,874
- Issue date Jan 24, 1995
- Sumitomo Electric Industries, Ltd.
- Shigeru Hirai
- G02 - OPTICS
Information Patent Grant
Optical isolator
- Patent number 5,381,261
- Issue date Jan 10, 1995
- Sumitomo Electric Industries, Ltd.
- Shigeru Hirai
- G02 - OPTICS
Information Patent Grant
Method of manufacturing fiber-optic collimators
- Patent number 5,265,179
- Issue date Nov 23, 1993
- Sumitomo Electric Industries, Ltd.
- Yoichi Ishiguro
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Silica based optical waveguide and production method therefor
- Publication number 20010007606
- Publication date Jul 12, 2001
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Takashi Sasaki
- G02 - OPTICS

Shigeru Hirai

Person

Patents Grantslast 30 patents

Silica based optical waveguide and production method therefor

Optical device module and method for manufacturing the same

Coupling structure of optical fibers and optical waveguides

Optical waveguide module and method of manufacturing the same

Method for assembling optical isolator and method for measuring iso...

Optical isolator

Optical fiber rod lens device and method of making same

Optical isolator

Method of manufacturing fiber-optic collimators

Patents Applicationslast 30 patents

Silica based optical waveguide and production method therefor