Inventor · disambiguated record
Seiji Okawara
Also filed as: OKAWARA SEIJI
6 granted patents·3 pending applications·363 citations·filing 1996–2015
84Inventor score
Top patents by PatentIndex Score
9 records- 0197US5746989AMethod for purifying exhaust gas of a diesel engineTOYOTA MOTOR CO LTD·Filed 1996·Granted May 5, 1998·275 cites·5 claims
- 0286US7306771B2Filter catalyst for purifying exhaust gases and its manufacturing method thereofTOYOTA MOTOR CO LTD·Filed 2003·Granted Dec 11, 2007·55 cites·15 claims
- 0383US7204965B2Filter catalyst for purifying exhaust gasesDENSO CORP·Filed 2003·Granted Apr 17, 2007·27 cites·7 claims
- 0458US7560079B2Exhaust gas-purifying apparatusTOYOTA MOTOR CO LTD·Filed 2004·Granted Jul 14, 2009·4 cites·6 claims
- 0557US7959868B2Exhaust gas purifying apparatusTOYOTA MOTOR CO LTD·Filed 2005·Granted Jun 14, 2011·2 cites·26 claims
- 0648US7622419B2Filter catalystCATALER CORP·Filed 2005·Granted Nov 24, 2009·0 cites·3 claims
- 0744US2010048392A1Catalyst for purifying exhaust gases and process for producing the sameTOYOTA MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 0839US2015204224A1Exhaust purification system of internal combustion engineDAIDO SHIGEKI·Filed 2013·Application pending·0 cites
- 0931US2015285116A1Exhaust gas purification catalyst, and exhaust gas purification filter and exhaust gas purification method using the sameTOYOTA MOTOR CO LTD·Filed 2015·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Seiji Okawara 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 →