Inventor
YOKOTA KOJI
JP28 patents
⚠️ This page may combine multiple inventors who share the name “YOKOTA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
8 patentsUS5412946AMay 9, 1995
NOx decreasing apparatus for an internal combustion engine
TOYOTA MOTOR CO LTD249 citations99
US6133185AOct 17, 2000
Exhaust gas purifying catalyst
TOYOTA MOTOR CO LTD67 citations96
US5804152ASep 8, 1998
Method for purifying exhaust gases
TOYOTA MOTOR CO LTD35 citations92
US5783160AJul 21, 1998
Method for purifying combustion exhaust gas
TOYOTA MOTOR CO LTD52 citations92
US5433933AJul 18, 1995
Method of purifying oxygen-excess exhaust gas
TOYOTA MOTOR CO LTD36 citations92
US5575983ANov 19, 1996
Catalyst for purifying exhaust gases and process for purifying exhaust gases
TOYOTA MOTOR CO LTD17 citations72
US5795992AAug 18, 1998
Method of testing durability of exhaust gas purification device
TOYOTA MOTOR CO LTD13 citations71
US5722238AMar 3, 1998
Device for evaluating catalyst performance deterioration
TOYOTA MOTOR CO LTD9 citations71
TOYODA CHUO KENKYUSHO KK
7 patentsUS5272871ADec 28, 1993
Method and apparatus for reducing nitrogen oxides from internal combustion engine
TOYODA CHUO KENKYUSHO KK319 citations98
US5543124AAug 6, 1996
Process for reducing nitrogen oxides
TOYODA CHUO KENKYUSHO KK61 citations96
US5474745ADec 12, 1995
Catalytic converter for purifying exhaust gas
TOYODA CHUO KENKYUSHO KK35 citations92
US5975758ANov 2, 1999
Method and sensor for detecting thermal history
TOYODA CHUO KENKYUSHO KK29 citations91
US4617794AOct 21, 1986
Exhaust gas purifying method and apparatus for internal combustion engines
TOYODA CHUO KENKYUSHO KK19 citations74
US5352337AOct 4, 1994
Method for reducing nitrogen oxides
TOYODA CHUO KENKYUSHO KK17 citations71
US5698988ADec 16, 1997
Method and device of detecting a deterioration
TOYODA CHUO KENKYUSHO KK1 citations51