Inventor
OYAMA NAOHISA
JP5 patents
⚠️ This page may combine multiple inventors who share the name “OYAMA NAOHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
3 patentsUS6739177B2May 25, 2004
Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines
TOYOTA MOTOR CO LTD98 citations95
US6725651B2Apr 27, 2004
Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent
TOYOTA MOTOR CO LTD35 citations92
US6729128B2May 4, 2004
Emission control apparatus and emission control method
TOYOTA MOTOR CO LTD66 citations91