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MARCdevices Co., Ltd.
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Phase analysis circuit
Patent number
10,782,329
Issue date
Sep 22, 2020
MARCDEVICES CO., LTD.
Koichi Hirama
G01 - MEASURING TESTING
Information
Patent Grant
Immittance conversion circuit and filter
Patent number
9,401,695
Issue date
Jul 26, 2016
MARCDEVICES CO., LTD.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY
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Patents Applications
last 30 patents
Information
Patent Application
PHASE ANALYSIS CIRCUIT
Publication number
20190154742
Publication date
May 23, 2019
MARCdevices Co., Ltd.
Koichi HIRAMA
G01 - MEASURING TESTING
Information
Patent Application
TRANSFER-FUNCTION COPYING CIRCUIT AND GANG-CONTROLLED PHASE DISPLAC...
Publication number
20160294055
Publication date
Oct 6, 2016
MARCdevices Co., Ltd.
Koichi HIRAMA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
IMMITTANCE CONVERSION CIRCUIT AND FILTER
Publication number
20150381145
Publication date
Dec 31, 2015
MARCdevices Co., Ltd.
Koichi HIRAMA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
ANTIRESONANT FREQUENCY-VARYING COMPLEX RESONANCE CIRCUIT
Publication number
20130027143
Publication date
Jan 31, 2013
MARCdevices Co., Ltd.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
ANTIRESONANT FREQUENCY-VARYING COMPLEX RESONANT CIRCUIT
Publication number
20130027148
Publication date
Jan 31, 2013
MARCdevices Co., Ltd.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
COMPLEX NEGATIVE FEEDBACK FREQUENCY SELECTION OUTPUT CIRCUIT AND OS...
Publication number
20120223782
Publication date
Sep 6, 2012
MARCdevices Co., Ltd.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
FREQUENCY VARIABLE COMPOSITE RESONANCE CIRCUIT
Publication number
20110148514
Publication date
Jun 23, 2011
MARCdevices Co., Ltd.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
QUASI-RESONANT COMPOSITE RESONANCE CIRCUIT
Publication number
20110148515
Publication date
Jun 23, 2011
MARCdevices Co., Ltd.
Koichi Hirama
H03 - BASIC ELECTRONIC CIRCUITRY