Inventor · disambiguated record
Haruhiko Koizumi
Also filed as: KOIZUMI HARUHIKO
13 granted patents·3 pending applications·191 citations·filing 1993–2013
92Inventor score
Files withPANASONIC CORP7MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5KAWANO HIROAKI1MATSUSHITA ELECTRONICS CORP1TOHO TECHNICAL SERVICE CO LTD1
Top patents by PatentIndex Score
16 records- 0193US7733187B2High frequency power amplifierPANASONIC CORP·Filed 2007·Granted Jun 8, 2010·30 cites·13 claims
- 0291US8692619B2High frequency power amplifierPANASONIC CORP·Filed 2013·Granted Apr 8, 2014·26 cites·5 claims
- 0387US7439808B2High-frequency power amplifierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2007·Granted Oct 21, 2008·22 cites·12 claims
- 0482US7990221B2Detector circuit and system for a wireless communicationPANASONIC CORP·Filed 2009·Granted Aug 2, 2011·8 cites·3 claims
- 0581US7421255B2Transmission apparatus and mobile communication terminal apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Sep 2, 2008·9 cites·13 claims
- 0676US6671505B1Frequency converterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 30, 2003·16 cites·5 claims
- 0768US7692491B2Radio-frequency power amplifierPANASONIC CORP·Filed 2008·Granted Apr 6, 2010·6 cites·13 claims
- 0868US7679438B2High frequency circuit, semiconductor device, and high frequency power amplification devicePANASONIC CORP·Filed 2008·Granted Mar 16, 2010·6 cites·26 claims
- 0968US5546051APower amplifier and power amplification methodMATSUSHITA ELECTRONICS CORP·Filed 1995·Granted Aug 13, 1996·28 cites·3 claims
- 1066US7449957B2Radio frequency power amplifierPANASONIC CORP·Filed 2006·Granted Nov 11, 2008·7 cites·14 claims
- 1162US7245182B2High frequency amplifier circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Jul 17, 2007·5 cites·4 claims
- 1257US6871058B2Frequency conversion circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Mar 22, 2005·5 cites·3 claims
- 1354US5340458AElectrolytic ion water generatorTOHO TECHNICAL SERVICE CO LTD·Filed 1993·Granted Aug 23, 1994·23 cites·6 claims
- 1442US2011241783A1Detector circuit and system for a wireless communicationPANASONIC CORP·Filed 2011·Application pending·0 cites
- 1533US2012112832A1Radio frequency switch and radio frequency moduleKAWANO HIROAKI·Filed 2011·Application pending·0 cites
- 1631US2003058041A1Variable gain amplifierFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Haruhiko Koizumi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →