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Kiyohito Nagata
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Radio communication system, frequency allocation method and frequen...
Patent number
7,082,310
Issue date
Jul 25, 2006
NTT Mobile Communications Networks, Inc.
Tomoaki Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio communication system, frequency allocation method and frequen...
Patent number
6,658,257
Issue date
Dec 2, 2003
NTT DoCoMo, Inc.
Tomoaki Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal strength measurement method and device
Patent number
6,556,552
Issue date
Apr 29, 2003
NTT Communications Networks, Inc.
Hisashi Nakagomi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication scheme for efficiently regulating service thro...
Patent number
5,983,097
Issue date
Nov 9, 1999
NTT Mobile Communications Network Inc.
Kazuhiko Kakinuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication system using base station frequency correction...
Patent number
5,826,197
Issue date
Oct 20, 1998
NTT Mobile Communications Network, Inc.
Kiyohito Nagata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for automatic creation of peripheral zone information
Patent number
5,732,327
Issue date
Mar 24, 1998
NTT Mobile Communications Network Inc.
Masaaki Yoshimi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for monitoring the state of interference by a base station o...
Patent number
5,603,093
Issue date
Feb 11, 1997
NTT Mobile Communications Network, Inc.
Masaaki Yoshimi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Control channel selecting method for mobile stations
Patent number
5,408,684
Issue date
Apr 18, 1995
NTT Mobile Communications Network, Inc.
Kazufumi Yunoki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Radio communication system, frequency allocation method and frequen...
Publication number
20040082335
Publication date
Apr 29, 2004
Tomoaki Hirayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE