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Arata Nakagoshi
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Kokubunji, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Cellular phone and mobile switching controller
Patent number
8,190,178
Issue date
May 29, 2012
Hitachi, Ltd.
Michio Iguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio access point testing method and testing apparatus
Patent number
7,848,745
Issue date
Dec 7, 2010
Hitachi, Ltd.
Yoshiaki Hasegawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio access point testing method and testing apparatus
Patent number
7,366,508
Issue date
Apr 29, 2008
Hitachi Communication Technologies, Ltd.
Yoshiaki Hasegawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio base station/radio base station controller equipped with inac...
Patent number
7,126,924
Issue date
Oct 24, 2006
Hitachi, Ltd.
Masayasu Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Turbo decoder, turbo encoder and radio base station with turbo deco...
Patent number
6,925,592
Issue date
Aug 2, 2005
Hitachi, Ltd.
Takao Inoue
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Traffic channel assignment based on traffic density and signal quality
Patent number
5,903,843
Issue date
May 11, 1999
Hitachi, Ltd.
Hideya Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Portable telephone system
Patent number
5,838,770
Issue date
Nov 17, 1998
Hitachi, Ltd.
Yutaka Fukushima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio communication system with plurality of wired lines
Patent number
5,799,252
Issue date
Aug 25, 1998
Hitachi, Ltd.
Arata Nakagoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile radio communication system employing time division multiple...
Patent number
5,652,752
Issue date
Jul 29, 1997
Hitachi, Ltd.
Toshiro Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Portable telephone system
Patent number
5,579,370
Issue date
Nov 26, 1996
Hitachi, Ltd.
Yutaka Fukushima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Diversity receiving apparatus
Patent number
5,559,838
Issue date
Sep 24, 1996
Hitachi, Ltd.
Arata Nakagoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Diversity receiving apparatus
Patent number
5,541,963
Issue date
Jul 30, 1996
Hitachi, Ltd.
Arata Nakagoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication switching across cell boundaries
Patent number
5,432,842
Issue date
Jul 11, 1995
Hitachi, Ltd.
Yasuaki Kinoshita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of controlling filter time constant and filter circuit havin...
Patent number
5,392,456
Issue date
Feb 21, 1995
Hitachi, Ltd.
Isamu Mitomo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Mobile communication system and location registration method in mob...
Patent number
5,379,451
Issue date
Jan 3, 1995
Hitachi, Ltd.
Arata Nakagoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Intermittenceless switching system
Patent number
5,353,281
Issue date
Oct 4, 1994
Kokusai Electric Co., Ltd.
Hiroshi Kuwahara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Demodulator and radio receiver having such a demodulator
Patent number
5,079,513
Issue date
Jan 7, 1992
Hitachi, Ltd.
Hiroshi Noguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
RADIO ACCESS POINT TESTING METHOD AND TESTING APPARATUS
Publication number
20100144339
Publication date
Jun 10, 2010
Yoshiaki Hasegawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CELLULAR PHONE AND MOBILE SWITCHING CONTROLLER
Publication number
20100113071
Publication date
May 6, 2010
Hitachi Communication Technologies, Ltd.
Michio IGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Radio access point testing method and testing apparatus
Publication number
20080160919
Publication date
Jul 3, 2008
Yoshiaki Hasegawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Cellular phone and mobile switching controller
Publication number
20070135158
Publication date
Jun 14, 2007
Michio Iguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Radio access point testing method and testing apparatus
Publication number
20050107080
Publication date
May 19, 2005
Yoshiaki Hasegawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Radio base station/radio base station controller equipped with inac...
Publication number
20020172178
Publication date
Nov 21, 2002
Masayasu Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Turbo decoder, turbo encoder and radio base station with turbo deco...
Publication number
20020170016
Publication date
Nov 14, 2002
Takao Inoue
H03 - BASIC ELECTRONIC CIRCUITRY