Inventor · disambiguated record
Ryoji Nishiumi
Also filed as: NISHIUMI RYOJI
5 granted patents·26 citations·filing 2005–2015
74Inventor score
Top patents by PatentIndex Score
5 records- 0176US7937207B2Exhaust gas purification system for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2006·Granted May 3, 2011·10 cites·9 claims
- 0273US7600372B2Exhaust gas control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted Oct 13, 2009·8 cites·7 claims
- 0362US8256281B2Fuel property determination apparatus for internal combustion engineNISHIUMI RYOJI·Filed 2009·Granted Sep 4, 2012·8 cites·8 claims
- 0438US10138837B2Air fuel ratio control for an internal combustion engine that can be operated with fuels at different propertiesTOYOTA MOTOR CO LTD·Filed 2015·Granted Nov 27, 2018·0 cites·4 claims
- 0532US9394840B2Fuel property determination system for internal combustion engineNISHIUMI RYOJI·Filed 2010·Granted Jul 19, 2016·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →