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Patents Grants
last 30 patents
Information
Patent Grant
Transmitting apparatus, communication apparatus, receiving apparatu...
Patent number
8,391,914
Issue date
Mar 5, 2013
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Orthogonal frequency division multiplex modem circuit
Patent number
8,335,153
Issue date
Dec 18, 2012
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Orthogonal frequency division multiplex modem circuit
Patent number
7,843,803
Issue date
Nov 30, 2010
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image communication system using a hierarchical code comprised of a...
Patent number
7,395,486
Issue date
Jul 1, 2008
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Orthogonal frequency division multiplex modem circuit
Patent number
7,099,268
Issue date
Aug 29, 2006
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio data communication system using spread spectrum scheme
Patent number
6,363,100
Issue date
Mar 26, 2002
NEC Corporation
Masahiro Ohki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Handoff method for cellular digital mobile communication system and...
Patent number
RE36309
Issue date
Sep 21, 1999
NEC Corporation
Toshihito Kanai
370 - Multiplex communications
Information
Patent Grant
Transmisson diversity system
Patent number
5,809,019
Issue date
Sep 15, 1998
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Spread spectrum method for transmitting an information signal as a...
Patent number
5,748,668
Issue date
May 5, 1998
NEC Corporation
Hideho Tomita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Base station transmitter/receiver capable of varying composite dire...
Patent number
5,745,858
Issue date
Apr 28, 1998
NEC Corporation
Toshifumi Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Spread spectrum method for transmitting an information signal as a...
Patent number
5,625,639
Issue date
Apr 29, 1997
NEC Corporation
Hideho Tomita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Base station transmission-reception apparatus for cellular system
Patent number
5,590,404
Issue date
Dec 31, 1996
NEC Corporation
Toshifumi Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Variable modulation communication method and system
Patent number
5,577,087
Issue date
Nov 19, 1996
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Maximum likelihood sequence estimation apparatus
Patent number
5,444,721
Issue date
Aug 22, 1995
NEC Corporation
Kazuhiro Okanoue
G11 - INFORMATION STORAGE
Information
Patent Grant
Half duplex communication system having quick channel assignments
Patent number
5,442,803
Issue date
Aug 15, 1995
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication system with cell-site switching for intra-cell...
Patent number
5,420,863
Issue date
May 30, 1995
NEC Corporation
Masanori Taketsugu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Low power consumption receiver with adaptive equalizer
Patent number
5,363,411
Issue date
Nov 8, 1994
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cellular mobile communications system using frequencies commonly sh...
Patent number
5,319,795
Issue date
Jun 7, 1994
NEC Corporation
Kojiro Hamabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Reception of TDMA digital data signal with compensation for channel...
Patent number
5,303,226
Issue date
Apr 12, 1994
NEC Corporation
Kazuhiro Okanoue
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Blind type sequence estimator for use in communications system
Patent number
5,272,726
Issue date
Dec 21, 1993
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Demodulator and demodulation method for a digital phase modulated s...
Patent number
5,272,447
Issue date
Dec 21, 1993
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Handoff method for cellular digital mobile communication system and...
Patent number
5,157,661
Issue date
Oct 20, 1992
NEC Corporation
Toshihito Kanai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of connecting channels of decentralized radio systems
Patent number
5,101,503
Issue date
Mar 31, 1992
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Repeat request signal transmission method for multi-station packet...
Patent number
4,888,767
Issue date
Dec 19, 1989
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet transmission system
Patent number
4,764,920
Issue date
Aug 16, 1988
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of determining optimal transmission channel in multi-station...
Patent number
4,747,101
Issue date
May 24, 1988
NEC Corporation
Yoshihiko Akaiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Receiver for antenna switching diversity systems
Patent number
4,742,568
Issue date
May 3, 1988
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization circuit for a Viterbi decoder
Patent number
4,578,800
Issue date
Mar 25, 1986
Yutaka Yasuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization circuit for a Viterbi decoder
Patent number
4,527,279
Issue date
Jul 2, 1985
Kokusai Denshin Denwa Co.
Yutaka Yasuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Digital equalizer for a cross-polarization receiver
Patent number
4,367,555
Issue date
Jan 4, 1983
Nippon Electric Co., Ltd.
Junji Namiki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
ORTHOGONAL FREQUENCY DIVISION MULTIPLEX MODEM CIRCUIT
Publication number
20110038403
Publication date
Feb 17, 2011
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMITTING APPARATUS, COMMUNICATION APPARATUS, RECEIVING APPARATU...
Publication number
20090117844
Publication date
May 7, 2009
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CELLULAR SYSTEM, METHOD OF ALLOCATING FREQUENCY CARRIERS IN THE SYS...
Publication number
20080008229
Publication date
Jan 10, 2008
NEC Corporation
Kojiro Hamabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Orthogonal frequency division multiplex modem circuit
Publication number
20060209673
Publication date
Sep 21, 2006
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Image communication system using a hierarchical code comprised of a...
Publication number
20050050430
Publication date
Mar 3, 2005
NEC Corporation
Yukitsuna Furuya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Orthogonal frequency division multiplex modem circuit
Publication number
20010053124
Publication date
Dec 20, 2001
NEC Corporation
Masaki Ichihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE