Inventor
UEOKA MASATOSHI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “UEOKA MASATOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON CATALYTIC CHEM IND
30 patentsUS6252110B1Jun 26, 2001
Methods for recovering acrylic acid
NIPPON CATALYTIC CHEM IND363 citations99
US5322960AJun 21, 1994
Method for inhibiting polymerization of (meth) acrylic acid and esters thereof
NIPPON CATALYTIC CHEM IND89 citations95
US6787001B2Sep 7, 2004
Method for distilling (meth) acrylic acid solution
NIPPON CATALYTIC CHEM IND20 citations92
US6482981B2Nov 19, 2002
Method for producing acrylic acid
NIPPON CATALYTIC CHEM IND41 citations92
US6441228B2Aug 27, 2002
Apparatus and process for producing (meth)acrylic acid
NIPPON CATALYTIC CHEM IND18 citations92
US6414183B1Jul 2, 2002
Method for handling waste oil
NIPPON CATALYTIC CHEM IND45 citations92
US6348135B1Feb 19, 2002
Process for the purification of (meth) acrylic acid and/or its ester
NIPPON CATALYTIC CHEM IND20 citations92
US5785821AJul 28, 1998
Process for the production of acrylic acid
NIPPON CATALYTIC CHEM IND30 citations92
US5504243AApr 2, 1996
Method for inhibiting polymerization of (meth) acrylic acid and esters thereof
NIPPON CATALYTIC CHEM IND47 citations92
US5315037AMay 24, 1994
Process for purification of acrylic acid
NIPPON CATALYTIC CHEM IND38 citations92
US5371280ADec 6, 1994
Polymerization inhibitor and inhibiting method for vinyl compound
NIPPON CATALYTIC CHEM IND21 citations91
US4956493ASep 11, 1990
Process for producing methacrylic ester
NIPPON CATALYTIC CHEM IND23 citations91
US6966973B2Nov 22, 2005
Apparatus and process for producing (meth)acrylic acid
NIPPON CATALYTIC CHEM IND12 citations84
US6695928B1Feb 24, 2004
Method for production of (meth) acrylic acid and/or (meth)acrylic esters
NIPPON CATALYTIC CHEM IND13 citations84
US6540881B1Apr 1, 2003
Method for refining (meth)acrylic acid
NIPPON CATALYTIC CHEM IND14 citations84
US6380424B1Apr 30, 2002
Purification process for hydroxyalkyl (meth)acrylate
NIPPON CATALYTIC CHEM IND14 citations82
US6649787B1Nov 18, 2003
Method for preparing (meth) acrylic acid ester
NIPPON CATALYTIC CHEM IND7 citations74
US6300513B2Oct 9, 2001
Method of stabilizing N-oxyl compounds in vinyl compounds
NIPPON CATALYTIC CHEM IND13 citations73
US6084127AJul 4, 2000
Method for recovering acrylic acid
NIPPON CATALYTIC CHEM IND11 citations73
US4725291AFeb 16, 1988
Method of collecting pyromellitic anhydride
NIPPON CATALYTIC CHEM IND8 citations73
US6649028B2Nov 18, 2003
Column treating process and apparatus thereof
NIPPON CATALYTIC CHEM IND12 citations72
US6414182B1Jul 2, 2002
Production process for hydroxyalkyl ester
NIPPON CATALYTIC CHEM IND8 citations72
US6458988B1Oct 1, 2002
Production process for hydroxyalkyl(meth)acrylate
NIPPON CATALYTIC CHEM IND2 citations62
US6384267B1May 7, 2002
Process for producing hydroxyalkyl (METH) acrylates
NIPPON CATALYTIC CHEM IND3 citations62
US6664418B1Dec 16, 2003
Method for inhibiting polymerization of a vinyl compound
NIPPON CATALYTIC CHEM IND3 citations61
US6660881B2Dec 9, 2003
Process for producing (meth)acrylic ester
NIPPON CATALYTIC CHEM IND3 citations61
US7048834B2May 23, 2006
Method for purification of acrylic acid
NIPPON CATALYTIC CHEM IND3 citations60
US6469202B2Oct 22, 2002
Method for disposal of solid catalyst
NIPPON CATALYTIC CHEM IND6 citations59
US6706208B2Mar 16, 2004
Stabilized hydroxyalkyl (meth)acrylate
NIPPON CATALYTIC CHEM IND0 citations51
US6452040B2Sep 17, 2002
Production process for hydroxyalkyl (meth)acrylate
NIPPON CATALYTIC CHEM IND0 citations48