Inventor

OKAWARA SEIJI

JP6 patents

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

TOYOTA MOTOR CO LTD

4 patents

US5746989AMay 5, 1998

Method for purifying exhaust gas of a diesel engine

TOYOTA MOTOR CO LTD275 citations98

US7306771B2Dec 11, 2007

Filter catalyst for purifying exhaust gases and its manufacturing method thereof

TOYOTA MOTOR CO LTD55 citations93

US7560079B2Jul 14, 2009

Exhaust gas-purifying apparatus

TOYOTA MOTOR CO LTD4 citations60

US7959868B2Jun 14, 2011

Exhaust gas purifying apparatus

TOYOTA MOTOR CO LTD2 citations55

DENSO CORP

1 patent

US7204965B2Apr 17, 2007

Filter catalyst for purifying exhaust gases

DENSO CORP27 citations91

CATALER CORP

1 patent

US7622419B2Nov 24, 2009

Filter catalyst

CATALER CORP0 citations49