Shimomura; Hirofumi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Shimomura; Hirofumi.The latest application filed is for "optical switch and optical network".

Company Profile

0.7.6

Shimomura; Hirofumi - Tokyo JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Ring network for sharing protection resource by working communication paths Grant 7,280,470 - Shiragaki , et al. October 9, 2	2007-10-09
Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer Grant 7,197,246 - Shimomura , et al. March 27, 2	2007-03-27
Optical add-drop multiplexer Grant 6,895,183 - Shimomura , et al. May 17, 2	2005-05-17
Optical switch and optical network Grant 6,809,846 - Shimomura , et al. October 26, 2	2004-10-26
Optical switch and optical network App 20040114933 - Shimomura, Hirofumi ; et al.	2004-06-17
Ring network for sharing protection resource by working communication paths App 20040057375 - Shiragaki, Tatsuya ; et al.	2004-03-25
Ring network for sharing protection resource by working communication paths Grant 6,657,952 - Shiragaki , et al. December 2, 2	2003-12-02
Optical signal monitoring method and apparatus Grant 6,538,779 - Takeshita , et al. March 25, 2	2003-03-25
Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer App 20030048507 - Shimomura, Hirofumi ; et al.	2003-03-13
Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer Grant 6,466,344 - Shimomura , et al. October 15, 2	2002-10-15
Optical add-drop multiplexer App 20020131116 - Shimomura, Hirofumi ; et al.	2002-09-19
Optical signal repeating and amplifying device and optical level adjusting device App 20020126372 - Shimomura, Hirofumi ; et al.	2002-09-12
Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer App 20020003644 - Shimomura, Hirofumi ; et al.	2002-01-10

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