Inventor
ITOH TAKUJI
21 patents
⚠️ This page may combine multiple inventors who share the name “ITOH TAKUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOA NENRYO KOGYO KK
16 patentsUS4849311AJul 18, 1989
Immobilized electrolyte membrane
TOA NENRYO KOGYO KK140 citations96
US4008149AFeb 15, 1977
Process of hydro-refining hydrocarbon oils
TOA NENRYO KOGYO KK120 citations95
US4840778AJun 20, 1989
Inorganic polysilazane and method of producing the same
TOA NENRYO KOGYO KK28 citations92
US4134856AJan 16, 1979
Catalyst for hydro-refining hydrocarbon oils
TOA NENRYO KOGYO KK36 citations92
US4052337AOct 4, 1977
Catalyst for reduction of nitrogen oxides and process for preparing same
TOA NENRYO KOGYO KK42 citations91
US4497909AFeb 5, 1985
Hydrogenation process
TOA NENRYO KOGYO KK33 citations90
US4218308AAug 19, 1980
Hydrogenation catalyst
TOA NENRYO KOGYO KK36 citations90
US4186078AJan 29, 1980
Catalyst and process for hydrofining petroleum wax
TOA NENRYO KOGYO KK33 citations90
US4139494AFeb 13, 1979
Catalyst for hydrofining petroleum wax
TOA NENRYO KOGYO KK33 citations90
US4959338ASep 25, 1990
Heat-resistant catalyst carrier moldings and catalysts for combustion
TOA NENRYO KOGYO KK37 citations89
US4124536ANov 7, 1978
Catalyst for reducing nitrogen oxides
TOA NENRYO KOGYO KK28 citations82
US4199555AApr 22, 1980
Catalyst for reducing nitrogen oxides
TOA NENRYO KOGYO KK9 citations73
US4049581ASep 20, 1977
Method for preparing hydrocarbon conversion catalyst using acid amide solutions to impregnate a tin component
TOA NENRYO KOGYO KK7 citations72
US4020011AApr 26, 1977
Method for preparing hydrocarbon conversion catalyst
TOA NENRYO KOGYO KK12 citations72
US4016241AApr 5, 1977
Process for reducing nitrogen oxides from flue gas
TOA NENRYO KOGYO KK13 citations72
US3962071AJun 8, 1976
Process for producing lubricating oils
TOA NENRYO KOGYO KK14 citations72