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Ryo Ishikawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Wireless communication device and antenna device
Patent number
10,938,119
Issue date
Mar 2, 2021
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
Akira Saito
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Wireless communication apparatus and antenna device
Patent number
10,868,370
Issue date
Dec 15, 2020
The University of Electro-Communications
Akira Saitou
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Dual-band amplifier
Patent number
10,637,519
Issue date
Apr 28, 2020
The University of Electro-Communications
Yoichiro Takayama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High efficiency power amplifier
Patent number
9,257,948
Issue date
Feb 9, 2016
The University of Electro-Communications
Masahiro Kamiyama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Information leakage prevention apparatus and method
Patent number
8,699,542
Issue date
Apr 15, 2014
NTT Advanced Technology Corporation
Toshinori Mori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Harmonic processing circuit and amplifying circuit using the same
Patent number
8,164,396
Issue date
Apr 24, 2012
National University Corporation, The University of Electro-Communications
Ryo Ishikawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Amplifier circuit
Patent number
8,154,348
Issue date
Apr 10, 2012
The University of Electro-Communications
Kazuhiko Honjo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Tuning device for liquid crystal television
Patent number
4,731,871
Issue date
Mar 15, 1988
Casio Computer Co., Ltd.
Ryo Ishikawa
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
WIRELESS COMMUNICATION APPARATUS AND ANTENNA DEVICE
Publication number
20200203852
Publication date
Jun 25, 2020
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
Akira SAITOU
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
WIRELESS COMMUNICATION DEVICE AND ANTENNA DEVICE
Publication number
20190252794
Publication date
Aug 15, 2019
The University of Electro-Communications
Akira SAITO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTI-BAND AMPLIFIER AND DUAL-BAND AMPLIFIER
Publication number
20180115333
Publication date
Apr 26, 2018
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
Yoichiro TAKAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HIGH EFFICIENCY POWER AMPLIFIER
Publication number
20140225671
Publication date
Aug 14, 2014
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
Masahiro Kamiyama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
INFORMATION LEAKAGE PREVENTION APPARATUS AND METHOD
Publication number
20120163417
Publication date
Jun 28, 2012
Toshinori Mori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
AMPLIFIER CIRCUIT
Publication number
20110050350
Publication date
Mar 3, 2011
The University of Electro-Communications
Kazuhiko Honjo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
HARMONIC PROCESSING CIRCUIT AND AMPLIFYING CIRCUIT USING THE SAME
Publication number
20100283544
Publication date
Nov 11, 2010
Ryo Ishikawa
H03 - BASIC ELECTRONIC CIRCUITRY