Inventor · disambiguated record
Hisayo Douta
Also filed as: DOUTA HISAYO
7 granted patents·160 citations·filing 1991–2000
87Inventor score
Top patents by PatentIndex Score
7 records- 0194US6073440ASystem for detecting deterioration of catalyst for purifying exhaust gasDENSO CORP·Filed 1997·Granted Jun 13, 2000·66 cites·23 claims
- 0279US5479897AControl apparatus for internal combustion engineNIPPON DENSO CO·Filed 1994·Granted Jan 2, 1996·32 cites·6 claims
- 0368US6295807B1System for detecting deterioration of catalyst for purifying exhaust gasDENSO CORP·Filed 2000·Granted Oct 2, 2001·14 cites·7 claims
- 0458US5473888AAir-fuel ratio control system for internal combustion engineNIPPON DENSO CO·Filed 1994·Granted Dec 12, 1995·14 cites·8 claims
- 0556US5390489AAir-fuel ratio control system for internal combustion engineNIOPONDENSO CO LTD·Filed 1993·Granted Feb 21, 1995·18 cites·8 claims
- 0650US5343701AAir-fuel ratio control system for internal combustion engineNIPPON DENSO CO·Filed 1992·Granted Sep 6, 1994·10 cites·14 claims
- 0737US5216610AEngine rotation speed control apparatus having auxiliary air controllerNIPPON DENSO CO·Filed 1991·Granted Jun 1, 1993·6 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →