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Hiroya Kawasaki
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Communications apparatus and congestion control method
Patent number
7,453,800
Issue date
Nov 18, 2008
Fujitsu Limited
Ryo Takajitsuko
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic commerce method, recording medium storing electronic com...
Patent number
7,092,900
Issue date
Aug 15, 2006
Fujitsu Limited
Takashi Yamane
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Switching system for controlling internal apparatuses in an exchang...
Patent number
6,671,760
Issue date
Dec 30, 2003
Fujitsu Limited
Hiroya Kawasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication path quality monitoring method and quality monitoring...
Patent number
6,477,141
Issue date
Nov 5, 2002
Fujitsu Limited
Naoyuki Izawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for preventing malfunction at time of duplex unit failure
Patent number
5,958,069
Issue date
Sep 28, 1999
Fujitsu Limited
Hiroya Kawasaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of detecting cell loss and exchange provided with cell loss...
Patent number
5,878,063
Issue date
Mar 2, 1999
Fujitsu Limited
Hiroya Kawasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Line protection switching system in duplexed fiber interface shelf
Patent number
5,663,949
Issue date
Sep 2, 1997
Fujitsu Limited
Ryoichi Ishibashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Communications apparatus and communications control method
Publication number
20030002517
Publication date
Jan 2, 2003
Ryo Takajitsuko
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Electronic commerce method, recording medium storing electronic com...
Publication number
20020065733
Publication date
May 30, 2002
Takashi Yamane
G06 - COMPUTING CALCULATING COUNTING