Inventor · disambiguated record
Tadao Hasegawa
Also filed as: HASEGAWA TADAO
14 granted patents·2 pending applications·291 citations·filing 1978–2007
93Inventor score
Top patents by PatentIndex Score
16 records- 0197US4192520ASeal structureTOYOTA MOTOR CO LTD·Filed 1978·Granted Mar 11, 1980·93 cites·8 claims
- 0288US6135077AValve timing changing apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 1998·Granted Oct 24, 2000·45 cites·9 claims
- 0382US5816204AVariable valve timing mechanism for internal combustion engineTOYOTA MOTOR CO LTD·Filed 1997·Granted Oct 6, 1998·37 cites·16 claims
- 0465US5924397AVariable valve performance apparatus for engineTOYOTA MOTOR CO LTD·Filed 1997·Granted Jul 20, 1999·20 cites·15 claims
- 0561US5988128AValve driving apparatus for engineTOYOTA MOTOR CO LTD·Filed 1998·Granted Nov 23, 1999·15 cites·10 claims
- 0661US5893345AValve control apparatus for an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1998·Granted Apr 13, 1999·17 cites·9 claims
- 0758US6014952AValve timing control apparatus for an internal combustion engineDENSON CORP·Filed 1998·Granted Jan 18, 2000·16 cites·8 claims
- 0856US4545334ALubricating oil cooling system for rear or mid engined vehicleTOYOTA MOTOR CO LTD·Filed 1984·Granted Oct 8, 1985·17 cites·8 claims
- 0952US7204215B2Valve characteristic controller and control method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2005·Granted Apr 17, 2007·2 cites·19 claims
- 1043US5870984AVariable engine valve driverTOYOTA MOTOR CO LTD·Filed 1997·Granted Feb 16, 1999·8 cites·6 claims
- 1141US5988127AValve lifter structureTOYOTA MOTOR CO LTD·Filed 1997·Granted Nov 23, 1999·7 cites·3 claims
- 1239US2010170461A1Variable valve timing apparatusTOYOTA MOTOR CO LTD·Filed 2007·Application pending·0 cites
- 1339US2007095314A1Control apparatus and control method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 1438US6131541AVariable valve performance mechanism in internal combustion engineTOYOTA MOTOR CO LTD·Filed 1997·Granted Oct 17, 2000·6 cites·17 claims
- 1534US6067947AValve driving apparatus for engineTOYOTA MOTOR CO LTD·Filed 1999·Granted May 30, 2000·3 cites·5 claims
- 1632US5964314APower steering deviceKAYABA INDUSTRY CO LTD·Filed 1998·Granted Oct 12, 1999·5 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →