Inventor
NAGASUNA KINYA
JP42 patents
⚠️ This page may combine multiple inventors who share the name “NAGASUNA KINYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON CATALYTIC CHEM IND
39 patentsUS6265488B1Jul 24, 2001
Production process for water-absorbing agent
NIPPON CATALYTIC CHEM IND178 citations99
US5797893AAug 25, 1998
Absorbing agent composition, absorbent material, and absorbent product containing absorbent material
NIPPON CATALYTIC CHEM IND140 citations99
US5760080AJun 2, 1998
Absorbing agent, process of manufacturing same, and absorbent product containing same
NIPPON CATALYTIC CHEM IND102 citations99
US5610208AMar 11, 1997
Water-absorbent agent, method for production thereof, and water-absorbent composition
NIPPON CATALYTIC CHEM IND150 citations99
US5140076AAug 18, 1992
Method of treating the surface of an absorbent resin
NIPPON CATALYTIC CHEM IND156 citations99
US4973632ANov 27, 1990
Production process for water-absorbent resin
NIPPON CATALYTIC CHEM IND181 citations99
US6297319B1Oct 2, 2001
Water-absorbing agent and production process therefor
NIPPON CATALYTIC CHEM IND100 citations98
US6071976AJun 6, 2000
Water absorbing agent, manufacturing method thereof, and manufacturing machine thereof
NIPPON CATALYTIC CHEM IND186 citations98
US5164459ANov 17, 1992
Method for treating the surface of an absorbent resin
NIPPON CATALYTIC CHEM IND132 citations98
US5574121ANov 12, 1996
Process for preparing an absorbent resin crosslinked with a mixture of trimethylolpropane diacrylate and triacrylate
NIPPON CATALYTIC CHEM IND142 citations97
US5532323AJul 2, 1996
Method for production of absorbent resin
NIPPON CATALYTIC CHEM IND133 citations97
US5422405AJun 6, 1995
Method for production of absorbent resin
NIPPON CATALYTIC CHEM IND119 citations97
US6187872B1Feb 13, 2001
Water-absorbent agent and method for manufacturing the same
NIPPON CATALYTIC CHEM IND58 citations96
US5981070ANov 9, 1999
Water-absorbent agent powders and manufacturing method of the same
NIPPON CATALYTIC CHEM IND70 citations96
US5478879ADec 26, 1995
Method for production of absorbent resin
NIPPON CATALYTIC CHEM IND82 citations96
US5229488AJul 20, 1993
Method for manufacture of an absorbent resin
NIPPON CATALYTIC CHEM IND61 citations96
US5026800AJun 25, 1991
Water-absorbent resin and production process
NIPPON CATALYTIC CHEM IND68 citations96
US6127454AOct 3, 2000
Water-absorbing agent and production process therefor
NIPPON CATALYTIC CHEM IND33 citations93
US6992144B2Jan 31, 2006
Water-absorbent agent, method for production thereof, and water-absorbent composition
NIPPON CATALYTIC CHEM IND15 citations92
US6395792B1May 28, 2002
Method for production of porous cross-linked poymer
NIPPON CATALYTIC CHEM IND28 citations92
US6335406B1Jan 1, 2002
Method for production of absorbent resin excelling in durability
NIPPON CATALYTIC CHEM IND40 citations92
US6274638B1Aug 14, 2001
Method for production of porous cross-linked polymer material
NIPPON CATALYTIC CHEM IND21 citations92
US6180724B1Jan 30, 2001
Process for manufacturing an absorbing agent and absorbent material
NIPPON CATALYTIC CHEM IND23 citations92
US6150582ANov 21, 2000
Absorbent article and production process therefor
NIPPON CATALYTIC CHEM IND39 citations92
US6087002AJul 11, 2000
Water absorbent resin
NIPPON CATALYTIC CHEM IND45 citations92
US6054541AApr 25, 2000
Process of manufacturing precursor of an absorbing agent
NIPPON CATALYTIC CHEM IND17 citations92
US5866678AFeb 2, 1999
Absorbent and method for production of absorbent resin
NIPPON CATALYTIC CHEM IND37 citations92
US6822010B2Nov 23, 2004
Method for production of porous material
NIPPON CATALYTIC CHEM IND16 citations84
US6797735B2Sep 28, 2004
Process for producing porous polymer
NIPPON CATALYTIC CHEM IND17 citations84
USRE38444EFeb 24, 2004
Absorbing agent, process of manufacturing same, and absorbent product containing same
NIPPON CATALYTIC CHEM IND16 citations84
US6630519B2Oct 7, 2003
Process for producing porous polymer
NIPPON CATALYTIC CHEM IND16 citations84
US6964998B2Nov 15, 2005
Water-absorbing agent and its production process and use
NIPPON CATALYTIC CHEM IND12 citations82
US6110992AAug 29, 2000
Water-absorbing agent and production process therefor
NIPPON CATALYTIC CHEM IND15 citations82
US7420018B2Sep 2, 2008
Water-absorbing agent production process with surface crosslinking and ion blocking
NIPPON CATALYTIC CHEM IND5 citations74
US6103785AAug 15, 2000
Water-absorbing agent and its production process and use
NIPPON CATALYTIC CHEM IND13 citations74
US5389722AFeb 14, 1995
Hydrophilic resin and method for production thereof
NIPPON CATALYTIC CHEM IND14 citations74
US5475062ADec 12, 1995
Method for surface treatment of absorbent resin
NIPPON CATALYTIC CHEM IND12 citations70
US7250459B2Jul 31, 2007
Absorbent resin composition
NIPPON CATALYTIC CHEM IND4 citations63
US6476155B1Nov 5, 2002
Method of producing a hydrophilic resin
NIPPON CATALYTIC CHEM IND1 citations52