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Kazumi Shiikuma
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Minato-ku, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Power source supply circuit, amplifier, communication device, base...
Patent number
10,361,693
Issue date
Jul 23, 2019
NEC Corporation
Yoji Murao
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transistor package, amplification circuit including the same, and m...
Patent number
9,853,605
Issue date
Dec 26, 2017
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transmitter and transmission method
Patent number
9,793,862
Issue date
Oct 17, 2017
NEC Corporation
Keiichi Motoi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transmitting amplifier and transmitter
Patent number
9,503,029
Issue date
Nov 22, 2016
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transmitter, signal-synthesizing circuit, and signal-synthesizing m...
Patent number
9,319,255
Issue date
Apr 19, 2016
NEC Corporation
Keiichi Motoi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
High frequency power amplifier
Patent number
9,054,647
Issue date
Jun 9, 2015
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Power amplifier and method of operation thereof
Patent number
8,736,364
Issue date
May 27, 2014
NEC Corporation
Makoto Hayakawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Transmission device
Patent number
8,693,578
Issue date
Apr 8, 2014
NEC Corporation
Kazuaki Kunihiro
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Power amplifier and power amplifying method
Patent number
8,620,240
Issue date
Dec 31, 2013
NEC Corporation
Shingo Yamanouchi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Power amplifying devices
Patent number
8,451,054
Issue date
May 28, 2013
NEC Corporation
Kazuaki Kunihiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power amplifier
Patent number
8,198,950
Issue date
Jun 12, 2012
NEC Corporation
Shingo Yamanouchi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High-frequency module having a coaxial connector with its center co...
Patent number
8,157,571
Issue date
Apr 17, 2012
NEC Corporation
Keijirou Kadomatsu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Amplifier
Patent number
7,710,202
Issue date
May 4, 2010
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High-frequency power amplifier improved in size and cost
Patent number
7,649,413
Issue date
Jan 19, 2010
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Amplifier
Patent number
7,453,320
Issue date
Nov 18, 2008
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Doherty amplifier and its distortion characteristic compensation me...
Patent number
7,315,207
Issue date
Jan 1, 2008
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Doherty amplifier
Patent number
7,295,064
Issue date
Nov 13, 2007
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Circuit for parallel operation of Doherty amplifiers
Patent number
7,262,656
Issue date
Aug 28, 2007
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Ask modulation apparatus and method
Patent number
6,792,050
Issue date
Sep 14, 2004
NEC Corporation
Kazumi Shiikuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
POWER SOURCE SUPPLY CIRCUIT, AMPLIFIER, COMMUNICATION DEVICE, BASE...
Publication number
20180026619
Publication date
Jan 25, 2018
NEC Corporation
Yoji MURAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD
Publication number
20170201302
Publication date
Jul 13, 2017
NEC Corporation
Tomoya KANEKO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMITTER AND TRANSMISSION METHOD
Publication number
20170104456
Publication date
Apr 13, 2017
NEC Corporation
Keiichi Motoi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSISTOR PACKAGE, AMPLIFICATION CIRCUIT INCLUDING THE SAME, AND M...
Publication number
20160344349
Publication date
Nov 24, 2016
NEC Corporation
Kazumi Shiikuma
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
TRANSMITTER
Publication number
20150263768
Publication date
Sep 17, 2015
NEC Corporation
Shinichi Hori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMITTING AMPLIFIER AND TRANSMITTER
Publication number
20150229276
Publication date
Aug 13, 2015
NEC Corporation
Kazumi Shiikuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMITTER, SIGNAL-SYNTHESIZING CIRCUIT, AND SIGNAL-SYNTHESIZING M...
Publication number
20150222461
Publication date
Aug 6, 2015
NEC Corporation
Keiichi Motoi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HIGH FREQUENCY POWER AMPLIFIER
Publication number
20130099860
Publication date
Apr 25, 2013
NEC Corporation
Kazumi Shiikuma
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
TRANSMISSION DEVICE
Publication number
20130016795
Publication date
Jan 17, 2013
NEC Corporation
Kazuaki Kunihiro
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
POWER AMPLIFIER AND METHOD OF OPERATION THEREOF
Publication number
20120200353
Publication date
Aug 9, 2012
NEC Corporation
Makoto Hayakawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
POWER AMPLIFIER AND POWER AMPLIFYING METHOD
Publication number
20110279180
Publication date
Nov 17, 2011
NEC Corporation
Shingo Yamanouchi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
POWER AMPLIFYING DEVICES
Publication number
20110241775
Publication date
Oct 6, 2011
Kazuaki Kunihiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
POWER AMPLIFIER
Publication number
20110163822
Publication date
Jul 7, 2011
Shingo Yamanouchi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
HIGH-FREQUENCY MODULE AND WIRELESS DEVICE
Publication number
20110104910
Publication date
May 5, 2011
Keijirou Kadomatsu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Amplifier
Publication number
20090045878
Publication date
Feb 19, 2009
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
HIGH-FREQUENCY POWER AMPLIFIER IMPROVED IN SIZE AND COST
Publication number
20080111631
Publication date
May 15, 2008
Kazumi SHIIKUMA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
AMPLIFIER
Publication number
20070252649
Publication date
Nov 1, 2007
Kazumi SHIIKUMA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Amplifier
Publication number
20070103237
Publication date
May 10, 2007
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Doherty amplifier and its distortion characteristic compensation me...
Publication number
20060114064
Publication date
Jun 1, 2006
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Doherty amplifier
Publication number
20060055458
Publication date
Mar 16, 2006
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Circuit for parallel operation of Doherty amplifiers
Publication number
20060044060
Publication date
Mar 2, 2006
NEC Corporation
Kazumi Shiikuma
H03 - BASIC ELECTRONIC CIRCUITRY