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HIROSHI KANZAWA
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KAWASAKI-SHI, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Switching method for bidirectional line switched ring and node appa...
Patent number
6,879,558
Issue date
Apr 12, 2005
Fujitsu Limited
Takashi Honda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ring configuring method and node apparatus used in the ring
Patent number
6,785,224
Issue date
Aug 31, 2004
Fujitsu Limited
Kumiko Uematsu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System configuration setting method and transmission apparatus
Patent number
6,668,280
Issue date
Dec 23, 2003
Fujitsu Limited
Tamaki Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Security system for transmission device
Patent number
6,513,120
Issue date
Jan 28, 2003
Fujitsu Limited
Hiroshi Kanzawa
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
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Patent Application
SECURITY SYSTEM FOR TRANSMISSION DEVICE
Publication number
20020194507
Publication date
Dec 19, 2002
HIROSHI KANZAWA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and apparatus for preventing unauthorized intrusions into tr...
Publication number
20020019948
Publication date
Feb 14, 2002
Kouichi Katou
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Ring configuring method and node apparatus used in the ring
Publication number
20010019540
Publication date
Sep 6, 2001
FUJITSU LIMITED
Kumiko Uematsu
H04 - ELECTRIC COMMUNICATION TECHNIQUE