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Haruo Yamashita
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Network relay apparatus and packet distribution method
Patent number
8,300,526
Issue date
Oct 30, 2012
Hitachi, Ltd.
Shinichiro Saito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for time-division multiplexing
Patent number
7,394,831
Issue date
Jul 1, 2008
Fujitsu Limited
Masaki Hirota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dynamic band-allocating subscriber-line-terminating apparatus
Patent number
6,791,984
Issue date
Sep 14, 2004
Fujitsu Limited
Nagao Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical switch device
Patent number
6,741,766
Issue date
May 25, 2004
Fujitsu Limited
Kazuyuki Tajima
G02 - OPTICS
Information
Patent Grant
Band allocation method and transmission system for transmitting var...
Patent number
6,658,009
Issue date
Dec 2, 2003
Fujitsu Limited
Haruo Yamashita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fault recovery system of a ring network
Patent number
RE37401
Issue date
Oct 2, 2001
Fujitsu Limited
Haruo Yamashita
714 - Error detection/correction and fault detection/recovery
Information
Patent Grant
Clock distributing method and apparatus
Patent number
5,523,984
Issue date
Jun 4, 1996
Fujitsu Limited
Hiroyuki Sato
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus and method for non-stop switching in asynchronous transfe...
Patent number
5,475,675
Issue date
Dec 12, 1995
Fujitsu Limited
Ryuichi Kondo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cross-connect apparatus capable of avoiding a superfluous detour ro...
Patent number
5,414,415
Issue date
May 9, 1995
Nippon Telegraph and Telephone Corp.
Hiromi Ueda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
One bit error correction method having actual data reproduction fun...
Patent number
5,408,476
Issue date
Apr 18, 1995
Fujitsu Limited
Masaaki Kawai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Asynchronous signal extracting circuit
Patent number
5,367,545
Issue date
Nov 22, 1994
Fujitsu Limited
Haruo Yamashita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Input-output signal control apparatus
Patent number
5,359,604
Issue date
Oct 25, 1994
Fujitsu Limited
Ryuichi Kondo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fault recovery system of a ring network
Patent number
5,307,353
Issue date
Apr 26, 1994
Fujitsu Limited
Haruo Yamashita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization circuit for establishing frame synchronism using po...
Patent number
5,282,206
Issue date
Jan 25, 1994
Fujitsu Limited
Tomohiro Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cross-connection apparatus for B-ISDN
Patent number
5,265,088
Issue date
Nov 23, 1993
Fujitsu Limited
Yuji Takigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System for monitoring ATM cross-connecting apparatus by inside-appa...
Patent number
5,257,311
Issue date
Oct 26, 1993
Fujitsu Limited
Hidetoshi Naito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase matching circuit
Patent number
5,099,477
Issue date
Mar 24, 1992
Fujitsu Limited
Atsuki Taniguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Easy detection of head position of information data via reception p...
Patent number
5,020,057
Issue date
May 28, 1991
Fujitsu Limited
Atsuki Taniguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase shift circuit
Patent number
4,935,701
Issue date
Jun 19, 1990
Fujitsu Limited
Masaaki Kawai
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
NETWORK RELAY APPARATUS AND PACKET DISTRIBUTION METHOD
Publication number
20100172348
Publication date
Jul 8, 2010
Shinichiro Saito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission method and system
Publication number
20050123293
Publication date
Jun 9, 2005
FUJITSU LIMITED
Kazumitsu Maki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical switch device
Publication number
20030016904
Publication date
Jan 23, 2003
FUJITSU LIMITED
Kazuyuki Tajima
G02 - OPTICS
Information
Patent Application
Method for time-division multiplexing
Publication number
20020093987
Publication date
Jul 18, 2002
Masaki Hirota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Dynamic band-allocating subscriber-line-terminating apparatus
Publication number
20010028633
Publication date
Oct 11, 2001
FUJITSU LIMITED
Nagao Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE