Inventor · disambiguated record
Yasuji Ishizuka
Also filed as: ISHIZUKA YASUJI
12 granted patents·215 citations·filing 1998–2022
91Inventor score
Top patents by PatentIndex Score
12 records- 0186US6263666B1Exhaust emission control device for internal combustion engineNISSAN MOTOR·Filed 2000·Granted Jul 24, 2001·51 cites·2 claims
- 0277US6185929B1Exhaust emission control system for internal combustion engineNISSAN MOTOR·Filed 1999·Granted Feb 13, 2001·34 cites·17 claims
- 0376US6101809AExhaust gas purifying system of internal combustion engineNISSAN MOTOR·Filed 1998·Granted Aug 15, 2000·41 cites·20 claims
- 0471US8176728B2Air-fuel ratio control deviceOOTAKE YOSHIYUKI·Filed 2008·Granted May 15, 2012·6 cites·11 claims
- 0569US7121086B2Desulphating of nitrogen oxide trapping catalystNISSAN MOTOR·Filed 2002·Granted Oct 17, 2006·16 cites·13 claims
- 0668US7536999B2Air-fuel ratio control apparatusNISSAN MOTOR·Filed 2007·Granted May 26, 2009·6 cites·20 claims
- 0765US6766640B2Engine exhaust purification deviceNISSAN MOTOR·Filed 2001·Granted Jul 27, 2004·14 cites·23 claims
- 0864US6050086AExhaust emission control apparatus for internal combustion engineNISSAN MOTOR·Filed 1998·Granted Apr 18, 2000·27 cites·23 claims
- 0963US8141343B2Air-fuel ratio control apparatusNAGAI HIROYUKI·Filed 2007·Granted Mar 27, 2012·3 cites·16 claims
- 1050US6116023AInternal combustion engine with NOx absorbent catalystNISSAN MOTOR·Filed 1998·Granted Sep 12, 2000·17 cites·27 claims
- 1147US12445882B2Measurement device and measurement methodANRITSU CORP·Filed 2022·Granted Oct 14, 2025·0 cites·10 claims
- 1246US8607545B2Air-fuel ratio control deviceOOTAKE YOSHIYUKI·Filed 2012·Granted Dec 17, 2013·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →