Inventor
SHIMASAKI YUUJI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “SHIMASAKI YUUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON CATALYTIC CHEM IND
22 patentsUS5700946ADec 23, 1997
Process for production of N-vinyl compound
NIPPON CATALYTIC CHEM IND37 citations89
US5801252ASep 1, 1998
Process for production of cyclic N-vinyl carboxylic acid amide
NIPPON CATALYTIC CHEM IND8 citations74
US5625076AApr 29, 1997
Catalyst for production of tertiary N-alkenyl carboxylic acid amide, and process for production of tertiary N-alkenyl carboxylic acid amide using said catalyst
NIPPON CATALYTIC CHEM IND13 citations73
US4731488AMar 15, 1988
Vapor-phase hydrogen transfer reaction of carbonyl compound with alcohol
NIPPON CATALYTIC CHEM IND9 citations73
US6391994B2May 21, 2002
Production process for vinylpyrrolidone polymer
NIPPON CATALYTIC CHEM IND6 citations72
US5650544AJul 22, 1997
Process for production of unsaturated ether and catalyst used for production of unsaturated ether
NIPPON CATALYTIC CHEM IND6 citations72
US5304656AApr 19, 1994
Process for preparing alkylene sulfides
NIPPON CATALYTIC CHEM IND9 citations72
US4833248AMay 23, 1989
Catalyst for vapor-phase intramolecular dehydration reaction of alkanolamines
NIPPON CATALYTIC CHEM IND6 citations72
US4774218ASep 27, 1988
Catalyst for vapor-phase intramolecular dehydration reaction of alkanolamines
NIPPON CATALYTIC CHEM IND9 citations72
US6436243B1Aug 20, 2002
Process for recovering N-vinyl-2-pyrrolidone
NIPPON CATALYTIC CHEM IND12 citations71
US6090988AJul 18, 2000
Method for recovering alkyl vinyl ether
NIPPON CATALYTIC CHEM IND12 citations71
US5847213ADec 8, 1998
Process for production of tertiary amine compound
NIPPON CATALYTIC CHEM IND15 citations71
US4966980AOct 30, 1990
Process for producing aziridines
NIPPON CATALYTIC CHEM IND7 citations71
US4841061AJun 20, 1989
Process for producing cyclic amines
NIPPON CATALYTIC CHEM IND10 citations71
US6489515B2Dec 3, 2002
Gas-phase dehydration reaction process
NIPPON CATALYTIC CHEM IND8 citations68
US5326903AJul 5, 1994
Process for preparing isocyanates using sintered oxides
NIPPON CATALYTIC CHEM IND12 citations66
US4841060AJun 20, 1989
Vapor-phase intramolecular dehydration reaction of alkanolamines
NIPPON CATALYTIC CHEM IND6 citations62
US5773669AJun 30, 1998
Process for production of vinyl ether
NIPPON CATALYTIC CHEM IND3 citations60
US5262570ANov 16, 1993
Method of producing ethylenediamines
NIPPON CATALYTIC CHEM IND4 citations60
US5231189AJul 27, 1993
Process for producing n-substituted aziridine compound
NIPPON CATALYTIC CHEM IND2 citations58
US10099189B2Oct 16, 2018
Packing for reaction tube, reaction tube, and reaction method using same
NIPPON CATALYTIC CHEM IND0 citations52
US5235107AAug 10, 1993
Method of producing ethylenediamines
NIPPON CATALYTIC CHEM IND1 citations50