Inventor
SAWADA TOSHIKI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “SAWADA TOSHIKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
6 patentsUS5160598ANov 3, 1992
Oxygen sensor for air-fuel ratio control having a protective layer including an oxygen storage material
NGK SPARK PLUG CO48 citations96
US4884066ANov 28, 1989
Deterioration detector system for catalyst in use for emission gas purifier
NGK SPARK PLUG CO82 citations95
US5849165ADec 15, 1998
Oxygen sensor for preventing silicon poisoning
NGK SPARK PLUG CO48 citations92
US5443711AAug 22, 1995
Oxygen-sensor element
NGK SPARK PLUG CO50 citations92
US5326597AJul 5, 1994
Method of producing oxygen sensor for air-fuel ratio control having a protective layer including oxygen storage material
NGK SPARK PLUG CO28 citations92
US5020499AJun 4, 1991
Apparatus for detecting abnormality of oxygen sensor and controlling air/fuel ratio
NGK SPARK PLUG CO39 citations92