Shinichirou Harasawa

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Automatic power restoring method and optical communication system
- Patent number 7,792,430
- Issue date Sep 7, 2010
- Fujitsu Limited
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic power restoring method and optical communication system
- Patent number 7,664,392
- Issue date Feb 16, 2010
- Fujitsu Limited
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic power restoring method and optical communication system
- Patent number 7,437,069
- Issue date Oct 14, 2008
- Fujitsu Limited
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Measurement method by OTDR and terminal station apparatus
- Patent number 7,420,666
- Issue date Sep 2, 2008
- Fujitsu Limited
- Takayuki Maehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Measurement method by OTDR and terminal station apparatus
- Patent number 7,215,415
- Issue date May 8, 2007
- Fujitsu Limited
- Takayuki Maehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Input monitoring system for optical amplifying repeater
- Patent number 7,092,149
- Issue date Aug 15, 2006
- Fujitsu Limited
- Shinichirou Harasawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communications system
- Patent number 6,721,507
- Issue date Apr 13, 2004
- Fujitsu Limited
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communications system
- Patent number 6,414,770
- Issue date Jul 2, 2002
- Fujitsu Limited
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communications system
- Patent number 6,233,076
- Issue date May 15, 2001
- Fujitsu Limited
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system including optical repeaters with select...
- Patent number 6,144,474
- Issue date Nov 7, 2000
- Fujitsu Limited
- Mitsushi Nitta
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying repeater
- Patent number 5,883,735
- Issue date Mar 16, 1999
- Fujitsu Limited
- Akira Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Input monitoring system for optical amplifying repeater
- Patent number 5,838,476
- Issue date Nov 17, 1998
- Fujitsu Limited
- Shinichirou Harasawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying repeater
- Patent number 5,784,192
- Issue date Jul 21, 1998
- Fujitsu Limited
- Akira Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Branch device for optical multiplex system
- Patent number 5,615,290
- Issue date Mar 25, 1997
- Fujitsu Limited
- Shinichirou Harasawa
- G02 - OPTICS
Information Patent Grant
Semiconductor laser driving circuit
- Patent number 5,530,936
- Issue date Jun 25, 1996
- Fujitsu Limited
- Shinichirou Harasawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Driver circuit for light emitting elements connected in series and...
- Patent number 5,459,328
- Issue date Oct 17, 1995
- Fujitsu Limited
- Daisuke Kadota
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Automatic power restoring method and optical communication system
- Publication number 20090175616
- Publication date Jul 9, 2009
- FUJITSU LIMITED
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Automatic power restoring method and optical communication system
- Publication number 20080317461
- Publication date Dec 25, 2008
- FUJITSU LIMITED
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Measurement method by OTDR and terminal station apparatus
- Publication number 20070183785
- Publication date Aug 9, 2007
- FUJITSU LIMITED
- Takayuki Maehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Measurement method by OTDR and terminal station apparatus
- Publication number 20050110980
- Publication date May 26, 2005
- FUJITSU LIMITED
- Takayuki Maehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Automatic power restoring method and optical communication system
- Publication number 20040213567
- Publication date Oct 28, 2004
- Fujitsu Limited & Nippon Telegraph
- Hiroyuki Deguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communications system
- Publication number 20020126353
- Publication date Sep 12, 2002
- FUJITSU LIMITED
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communications system
- Publication number 20010015838
- Publication date Aug 23, 2001
- Hiroyuki Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Shinichirou Harasawa

Person

Patents Grantslast 30 patents

Automatic power restoring method and optical communication system

Automatic power restoring method and optical communication system

Automatic power restoring method and optical communication system

Measurement method by OTDR and terminal station apparatus

Measurement method by OTDR and terminal station apparatus

Input monitoring system for optical amplifying repeater

Optical communications system

Optical communications system

Optical communications system

Optical transmission system including optical repeaters with select...

Optical amplifying repeater

Input monitoring system for optical amplifying repeater

Optical amplifying repeater

Branch device for optical multiplex system

Semiconductor laser driving circuit

Driver circuit for light emitting elements connected in series and...

Patents Applicationslast 30 patents

Automatic power restoring method and optical communication system

Automatic power restoring method and optical communication system

Measurement method by OTDR and terminal station apparatus

Measurement method by OTDR and terminal station apparatus

Automatic power restoring method and optical communication system

Optical communications system

Optical communications system