Koichiro Adachi

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Hyogo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sound volume control circuit
- Patent number 8,842,855
- Issue date Sep 23, 2014
- Ricoh Company, Ltd.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic volume circuit
- Patent number 8,649,532
- Issue date Feb 11, 2014
- Ricoh Company, Ltd.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Operational amplifier
- Patent number 8,193,862
- Issue date Jun 5, 2012
- Ricoh Company, Ltd.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Operational amplifier
- Patent number 7,705,679
- Issue date Apr 27, 2010
- Ricoh Company, Ltd.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
SOUND VOLUME CONTROL CIRCUIT
- Publication number 20120177227
- Publication date Jul 12, 2012
- RICOH COMPANY, LTD.
- Koichiro ADACHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
OPERATIONAL AMPLIFIER
- Publication number 20110063036
- Publication date Mar 17, 2011
- RICOH COMPANY, LTD.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ELECTRONIC VOLUME CIRCUIT
- Publication number 20110043279
- Publication date Feb 24, 2011
- RICOH COMPANY, LTD.
- Koichiro Adachi
- H03 - BASIC ELECTRONIC CIRCUITRY