Inventor
SEKIZAWA KAZUHIKO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “SEKIZAWA KAZUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSOH CORP
16 patentsUS5695728ADec 9, 1997
Method for removal of nitrogen oxides
TOSOH CORP20 citations92
US5427753AJun 27, 1995
Process for removing nitrogen oxides from oxygen rich exhaust gas
TOSOH CORP35 citations92
US5382416AJan 17, 1995
Method for purifying exhaust gas
TOSOH CORP21 citations92
US5208198AMay 4, 1993
Catalyst for purifying exhaust gas
TOSOH CORP26 citations92
US5206196AApr 27, 1993
Catalyst for purifying exhaust gas
TOSOH CORP22 citations92
US5807528ASep 15, 1998
Catalyst for purifying exhaust gas
TOSOH CORP17 citations83
US4982003AJan 1, 1991
Mixed oxide catalyst and process for producing an alkylenamine by using the catalyst
TOSOH CORP21 citations82
US5374409ADec 20, 1994
Purifying gases with an alkali metal and transition metal containing zeolite
TOSOH CORP12 citations73
US5236879AAug 17, 1993
Catalyst for purifying exhaust gas
TOSOH CORP16 citations73
US4861929AAug 29, 1989
Process for producing halogenated benzene derivative using zeolite catalyst
TOSOH CORP8 citations73
US5449504ASep 12, 1995
Process for removing nitrogen oxides from oxygen rich exhaust gas
TOSOH CORP15 citations70
US5001289AMar 19, 1991
Shaped zeolite catalyst for liquid phase organic reactions
TOSOH CORP6 citations62
US4792644ADec 20, 1988
Preparation of halogenated benzene derivatives
TOSOH CORP3 citations62
US5149877ASep 22, 1992
Process for producing alkylenamine
TOSOH CORP1 citations52
US5073649ADec 17, 1991
Process for producing a polyalkylene polyamine
TOSOH CORP1 citations52
US4740641AApr 26, 1988
Producing a halogenated benzene derivative using zeolite catalyst treated with alkali solution of pH 11 or more
TOSOH CORP1 citations52
TOYO SODA MFG CO LTD
3 patentsUS4250339AFeb 10, 1981
Process for producing methacrolein
TOYO SODA MFG CO LTD34 citations91
US4914247AApr 3, 1990
Process for preparing para-substituted halogenobenzene derivatives
TOYO SODA MFG CO LTD9 citations73
US4849560AJul 18, 1989
Process for preparation of halogenated benzene derivatives
TOYO SODA MFG CO LTD8 citations73