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Yokohama, Japan

Shigeru Hirai

USPTO Granted Patents = 9

Average Co-Inventor Count = 4.4

ph-index = 6

Forward Citations = 138(Granted Patents)

Location History:

Yokohama, JP (1993 - 1997)
Kanagawa, JP (1995 - 2004)

Company Filing History:

9 out of 10,239

Sumitomo Electric Industries, Limited

Years Active: 1993-2004

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6690872 - Silica based optical waveguide and production method therefor (2004-02-10),

2. 5696860 - Optical device module and method for manufacturing the same (1997-12-09),

3. 5513290 - Coupling structure of optical fibers and optical waveguides (1996-04-30),

4. 5481632 - Optical waveguide module and method of manufacturing the same (1996-01-02),

5. 5471306 - Method for assembling optical isolator and method for measuring isolation (1995-11-28),

6. 5408491 - Optical isolator (1995-04-18),

7. 5384874 - Optical fiber rod lens device and method of making same (1995-01-24),

8. 5381261 - Optical isolator (1995-01-10),

9. 5265179 - Method of manufacturing fiber-optic collimators (1993-11-23),

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