Inventor · disambiguated record
Seiki Aoyama
Also filed as: AOYAMA SEIKI
23 granted patents·1 pending application·848 citations·filing 1994–2009
97Inventor score
Top patents by PatentIndex Score
24 records- 0193US6287885B1Method for manufacturing semiconductor dynamic quantity sensorDENSO CORP·Filed 1999·Granted Sep 11, 2001·84 cites·38 claims
- 0291US6483322B2Capacitive physical quantity sensorDENSO CORP·Filed 2001·Granted Nov 19, 2002·42 cites·8 claims
- 0391US6423563B2Method for manufacturing semiconductor dynamic quantity sensorDENSO CORP·Filed 2001·Granted Jul 23, 2002·77 cites·36 claims
- 0491US5637995AMagnetic detection device having a magnet including a stepped portion for eliminating turbulence at the MR sensorNIPPON DENSO CO·Filed 1995·Granted Jun 10, 1997·106 cites·22 claims
- 0590US6508126B2Dynamic quantity sensor having movable and fixed electrodes with high rigidityDENSO CORP·Filed 2001·Granted Jan 21, 2003·48 cites·19 claims
- 0688US5574364APosition detector including a reference position wherein the sensor is saturating the MR sensor for preventing hysteresis and in a bridge circuitNIPPON DENSO CO·Filed 1994·Granted Nov 12, 1996·61 cites·25 claims
- 0788US5493219AMRE sensor signal detectorNIPPON DENSO CO·Filed 1994·Granted Feb 20, 1996·72 cites·12 claims
- 0887US7129798B2Oscillator circuit having stable frequencyDENSO CORP·Filed 2003·Granted Oct 31, 2006·33 cites·12 claims
- 0987US6252395B1Temperature-compensating amplification circuit and a position detecting apparatus using such amplification circuitDENSO CORP·Filed 1999·Granted Jun 26, 2001·64 cites·12 claims
- 1087US5841276AMagnetic gear rotation sensorNIPPON DENSO CO·Filed 1996·Granted Nov 24, 1998·76 cites·34 claims
- 1177US6450031B1Semiconductor physical quantity sensorDENSO CORP·Filed 2000·Granted Sep 17, 2002·41 cites·15 claims
- 1267US7628073B2Physical quantity sensorDENSO CORP·Filed 2007·Granted Dec 8, 2009·5 cites·7 claims
- 1366US8006797B2Side collision detecting apparatus for vehicleDENSO CORP·Filed 2009·Granted Aug 30, 2011·4 cites·6 claims
- 1466US5534809APulse phase difference encoding circuitNIPPON DENSO CO·Filed 1994·Granted Jul 9, 1996·25 cites·26 claims
- 1564US6104186ARotation detector using magnetoresistance element positioned in vicinity of outer peripheral edge of toothed gearDENSO CORP·Filed 1998·Granted Aug 15, 2000·23 cites·9 claims
- 1662US6020736AMagnetoresistive type position sensor having bias magnetic and magnet resistance elements in bias magnetic field thereofNIPPON DENSO CO·Filed 1995·Granted Feb 1, 2000·23 cites·44 claims
- 1758US5656936ADisplacement detecting deviceNIPPON DENSO CO·Filed 1996·Granted Aug 12, 1997·19 cites·35 claims
- 1850US5644226AMagnetic detector having a bias magnet and magnetoresistive elements shifted away from the center of the magnetNIPPON DENSO CO·Filed 1995·Granted Jul 1, 1997·25 cites·16 claims
- 1949US6809580B2Switched capacitor filter circuit and method of fabricating the sameDENSO CORP·Filed 2003·Granted Oct 26, 2004·4 cites·10 claims
- 2048US7049883B2Switched-capacitor low-pass filter and semiconductor pressure sensor apparatus incorporating the filterDENSO CORP·Filed 2004·Granted May 23, 2006·4 cites·6 claims
- 2145US5525899APhysical quantity change detection device which detects change by detecting a phase difference between two pulsesNIPPON DENSO CO·Filed 1994·Granted Jun 11, 1996·11 cites·5 claims
- 2239US2006027026A1Sensor deviceDENSO CORP·Filed 2005·Application pending·0 cites
- 2333US6201762B1EPROM circuit with error correctionDENSO CORP·Filed 2000·Granted Mar 13, 2001·0 cites·3 claims
- 2430US5854572ACompact structure of automatic gain control circuitDENSO CORP·Filed 1997·Granted Dec 29, 1998·1 cites·4 claims
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