P

Inventor

DOUTA HISAYO

JP7 patents
⚠️ This page may combine multiple inventors who share the name “DOUTA HISAYO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON DENSO CO

4 patents
US5479897AJan 2, 1996

Control apparatus for internal combustion engine

NIPPON DENSO CO32 citations92
US5473888ADec 12, 1995

Air-fuel ratio control system for internal combustion engine

NIPPON DENSO CO14 citations73
US5343701ASep 6, 1994

Air-fuel ratio control system for internal combustion engine

NIPPON DENSO CO10 citations73
US5216610AJun 1, 1993

Engine rotation speed control apparatus having auxiliary air controller

NIPPON DENSO CO6 citations62

DENSO CORP

2 patents
US6073440AJun 13, 2000

System for detecting deterioration of catalyst for purifying exhaust gas

DENSO CORP66 citations95
US6295807B1Oct 2, 2001

System for detecting deterioration of catalyst for purifying exhaust gas

DENSO CORP14 citations73

NIOPONDENSO CO LTD

1 patent
US5390489AFeb 21, 1995

Air-fuel ratio control system for internal combustion engine

NIOPONDENSO CO LTD18 citations68