Inventor · disambiguated record
Toshihisa Sugiyama
Also filed as: SUGIYAMA TOSHIHISA
17 granted patents·1 pending application·288 citations·filing 1980–2015
94Inventor score
Top patents by PatentIndex Score
18 records- 0182US5186005AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1991·Granted Feb 16, 1993·39 cites·12 claims
- 0278US4369753APressure mediated diesel engine exhaust gas recirculation control systemTOYOTA MOTOR CO LTD·Filed 1980·Granted Jan 25, 1983·21 cites·16 claims
- 0377US6829891B2Exhaust emission control device and method of controlling exhaust emissionTOYOTA MOTOR CO LTD·Filed 2001·Granted Dec 14, 2004·26 cites·15 claims
- 0476US5190015AEvaporated fuel discharge suppressing apparatus for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1992·Granted Mar 2, 1993·35 cites·20 claims
- 0574US8347846B2Control device for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2009·Granted Jan 8, 2013·6 cites·6 claims
- 0671US7971427B2Exhaust gas purifying apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2007·Granted Jul 5, 2011·5 cites·5 claims
- 0770US9726055B2Poppet valveKATSUMATA SHOUJI·Filed 2014·Granted Aug 8, 2017·2 cites·13 claims
- 0870US5081842AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1990·Granted Jan 21, 1992·26 cites·19 claims
- 0970US5053582AElectromagnetic waves shield tapeTOKYO KEIKI KK·Filed 1990·Granted Oct 1, 1991·35 cites·3 claims
- 1069US6945036B2Exhaust emission control filter and method of controlling exhaust emissionTOYOTA MOTOR CO LTD·Filed 2001·Granted Sep 20, 2005·15 cites·27 claims
- 1162US5277029AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1992·Granted Jan 11, 1994·32 cites·12 claims
- 1256US8683963B2Hydraulic control device for engineKOBAYASHI HIDEO·Filed 2009·Granted Apr 1, 2014·2 cites·1 claims
- 1356US5144803AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1991·Granted Sep 8, 1992·15 cites·11 claims
- 1450US5154057AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1991·Granted Oct 13, 1992·15 cites·10 claims
- 1549US5168707AInternal combustion engine with a dual turbocharger systemTOYOTA MOTOR CO LTD·Filed 1990·Granted Dec 8, 1992·14 cites·23 claims
- 1646US2013008165A1Rankine cycle systemTOYOTA MOTOR CO LTD·Filed 2010·Application pending·0 cites
- 1743US9644507B2Oil pan structureYAMADA KENICHI·Filed 2008·Granted May 9, 2017·0 cites·4 claims
- 1840US10107148B2Valve rotation deviceTOYOTA MOTOR CO LTD·Filed 2015·Granted Oct 23, 2018·0 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Toshihisa Sugiyama 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 →