Inventor · disambiguated record
Akio Tamagawa
Also filed as: TAMAGAWA AKIO
18 granted patents·1 pending application·655 citations·filing 1990–2016
95Inventor score
Files withNEC CORP10NEC ELECTRONICS CORP5RENESAS ELECTRONICS CORP2HIGASHIDA YOSHIHIRO1NEC COPORATION1
Top patents by PatentIndex Score
19 records- 0198US5532916AVoltage converting circuit and multiphase clock generating circuit used for driving the sameNEC CORP·Filed 1995·Granted Jul 2, 1996·224 cites·4 claims
- 0295US5461557AVoltage converting circuit and multiphase clock generating circuit used for driving the sameNEC CORP·Filed 1993·Granted Oct 24, 1995·87 cites·4 claims
- 0388US5061862AReference voltage generating circuitNEC CORP·Filed 1990·Granted Oct 29, 1991·61 cites·8 claims
- 0482US5623222AVoltage converting circuit and multiphase clock generating circuit used for driving the sameNEC CORP·Filed 1995·Granted Apr 22, 1997·34 cites·3 claims
- 0581US5754078AOperational amplifier for class B amplificationNEC CORP·Filed 1996·Granted May 19, 1998·49 cites·5 claims
- 0680US6661260B2Output circuit of semiconductor circuit with power consumption reducedNEC ELECTRONICS CORP·Filed 2002·Granted Dec 9, 2003·23 cites·16 claims
- 0778US7540657B2Temperature detection circuitNEC ELECTRONICS CORP·Filed 2007·Granted Jun 2, 2009·11 cites·9 claims
- 0876US7350974B2Temperature detection circuitNEC ELECTRONICS CORP·Filed 2005·Granted Apr 1, 2008·10 cites·9 claims
- 0976US5339236ACharge pump circuit for intermediate voltage between power supply voltage and its double voltageNEC CORP·Filed 1993·Granted Aug 16, 1994·49 cites·24 claims
- 1074US5254487AMethod of manufacturing high and low voltage CMOS transistors on a single chipNEC CORP·Filed 1993·Granted Oct 19, 1993·36 cites·12 claims
- 1173US5045900ASemiconductor device having a vertical power MOSFET fabricated in an isolated form on a semiconductor substrateNEC CORP·Filed 1991·Granted Sep 3, 1991·36 cites·11 claims
- 1271US9324788B2Semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2014·Granted Apr 26, 2016·2 cites·16 claims
- 1365US8254075B2Semiconductor device and circuit protection methodHIGASHIDA YOSHIHIRO·Filed 2010·Granted Aug 28, 2012·5 cites·17 claims
- 1459US7545198B2Semiconductor deviceNEC ELECTRONICS CORP·Filed 2006·Granted Jun 9, 2009·3 cites·7 claims
- 1550US9627527B2Semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2016·Granted Apr 18, 2017·0 cites·16 claims
- 1645US5151666AOscillation stoppage detection circuitNEC CORP·Filed 1992·Granted Sep 29, 1992·11 cites·8 claims
- 1742US2008316666A1Flyback voltage detecting circuit and apparatus and method for inductive loadNEC ELECTRONICS CORP·Filed 2008·Application pending·0 cites
- 1840US5212460ACrystal oscillation circuit with voltage regulating circuitNEC COPORATION·Filed 1992·Granted May 18, 1993·8 cites·4 claims
- 1938US6046491ASemiconductor resistor element having improved resistance tolerance and semiconductor device thereforNEC CORP·Filed 1997·Granted Apr 4, 2000·6 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →