Katsuhiko Hirashima

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Transmission apparatus and retry method
- Patent number 9,871,624
- Issue date Jan 16, 2018
- Fujitsu Limited
- Hiroaki Shiraishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of transferring frames of variable length for a passive opti...
- Patent number 7,418,009
- Issue date Aug 26, 2008
- Fujitsu Limited
- Susumu Tominaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network unit and optical line terminal
- Patent number 7,415,111
- Issue date Aug 19, 2008
- Fujitsu Limited
- Takashi Monzawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frame transmission device
- Patent number 7,313,144
- Issue date Dec 25, 2007
- Fujitsu Limited
- Daisuke Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network unit and optical line terminal
- Patent number 6,848,053
- Issue date Jan 25, 2005
- Fujitsu Limited
- Takashi Monzawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical line terminal
- Patent number 6,728,248
- Issue date Apr 27, 2004
- Fujitsu Limited
- Kazuhiro Uchida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Homo-code continuity proof testing device
- Patent number 6,611,928
- Issue date Aug 26, 2003
- Fujitsu Limited
- Shinichi Fujiyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TRANSMISSION APPARATUS AND RETRY METHOD
- Publication number 20170063496
- Publication date Mar 2, 2017
- Fujitsu Limited
- Hiroaki Shiraishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PACKET TRANSMISSION DEVICE
- Publication number 20090213734
- Publication date Aug 27, 2009
- FUJITSU LIMITED
- Kenji HASHINAGA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system
- Publication number 20060067691
- Publication date Mar 30, 2006
- Kenichi Hirano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frame transmission device
- Publication number 20050141416
- Publication date Jun 30, 2005
- Daisuke Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical access system
- Publication number 20050058071
- Publication date Mar 17, 2005
- Katsuhiko Hirashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical network unit and optical line terminal
- Publication number 20050058139
- Publication date Mar 17, 2005
- Takashi Monzawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of transferring frames of variable length for a passive opti...
- Publication number 20030095568
- Publication date May 22, 2003
- FUJITSU LIMITED
- Susumu Tominaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE