Inventor · disambiguated record
Takumi Hatsuda
Also filed as: HATSUDA TAKUMI
39 granted patents·3,350 citations·filing 1985–2005
99Inventor score
Top patents by PatentIndex Score
39 records- 0198US6562879B1Water-absorbent resin powder and its production process and useNIPPON CATALYTIC CHEM IND·Filed 2000·Granted May 13, 2003·132 cites·23 claims
- 0298US6241928B1Method for production of shaped hydrogel of absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1999·Granted Jun 5, 2001·351 cites·24 claims
- 0398US6228930B1Water-absorbent resin granule-containing composition and production process for water-absorbent resin granuleNIPPON CATALYTIC CHEM IND·Filed 1998·Granted May 8, 2001·222 cites·14 claims
- 0498US5250640AMethod for production of particulate hydrogel polymer and absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1992·Granted Oct 5, 1993·185 cites·17 claims
- 0597US7183456B2Water-absorbent resin and production process thereforNIPPON CATALYTIC CHEM IND·Filed 2004·Granted Feb 27, 2007·78 cites·9 claims
- 0697US6107358AWater-absorbent resin and method for production thereofNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Aug 22, 2000·174 cites·19 claims
- 0797US5140076AMethod of treating the surface of an absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1990·Granted Aug 18, 1992·156 cites·30 claims
- 0897US4734478AWater absorbing agentNIPPON CATALYTIC CHEM IND·Filed 1985·Granted Mar 29, 1988·535 cites·39 claims
- 0996US5275773AMethod for production of particulate hydrated gel polymer and absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1992·Granted Jan 4, 1994·105 cites·14 claims
- 1096US5164459AMethod for treating the surface of an absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1990·Granted Nov 17, 1992·132 cites·19 claims
- 1194US6720389B2Water-absorbent resin and production process thereforNIPPON CATALYTIC CHEM IND·Filed 2001·Granted Apr 13, 2004·42 cites·39 claims
- 1294US6458921B1Water-absorbent resin granule-containing composition and production process for water-absorbent resin granuleNIPPON CATALYTIC CHEM IND·Filed 2000·Granted Oct 1, 2002·48 cites·21 claims
- 1393US6817557B2Process for transporting, storing, and producing a particulate water-absorbent resinNIPPON CATALYTIC CHEM IND·Filed 2001·Granted Nov 16, 2004·71 cites·8 claims
- 1493US6576713B2Water-absorbent resin powder and production process thereforNIPPON CATALYTIC CHEM IND·Filed 2001·Granted Jun 10, 2003·56 cites·29 claims
- 1593US6388000B1Method for production of hydrophilic resinNIPPON CATALYTIC CHEM IND·Filed 1995·Granted May 14, 2002·71 cites·14 claims
- 1693US4920202AMethod for production of hydrophilic polymer from hydrated gel polymerNIPPON CATALYTIC CHEM IND·Filed 1988·Granted Apr 24, 1990·67 cites·17 claims
- 1792US6133193AAbsorbent resin composition and method for production thereofNIPPON CATALYTIC CHEM IND·Filed 1995·Granted Oct 17, 2000·80 cites·24 claims
- 1891US6207772B1Method for production of cross-linked polymerNIPPON CATALYTIC CHEM IND·Filed 2000·Granted Mar 27, 2001·33 cites·17 claims
- 1990US6174978B1Production process of water-absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1998·Granted Jan 16, 2001·72 cites·39 claims
- 2090US6140395AMethod of producing hydrophilic resinNIPPON CATALYTIC CHEM IND·Filed 1998·Granted Oct 31, 2000·50 cites·27 claims
- 2190US5229488AMethod for manufacture of an absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1990·Granted Jul 20, 1993·61 cites·36 claims
- 2287US6667372B1Continuous manufacturing method of water-absorbent polymerNIPPON CATALYTIC CHEM IND·Filed 2000·Granted Dec 23, 2003·37 cites·29 claims
- 2386US5518761AAbsorbent material absorbent article, and method for production thereofNIPPON CATALYTIC CHEM IND·Filed 1995·Granted May 21, 1996·49 cites·6 claims
- 2486US4985514AMethod for production of water absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1988·Granted Jan 15, 1991·45 cites·24 claims
- 2584US6998447B2Method for production of hydrophilic resinNIPPON CATALYTIC CHEM IND·Filed 2002·Granted Feb 14, 2006·16 cites·25 claims
- 2684US6586549B1Water-absorbing composition and its useNIPPON CATALYTIC CHEM IND·Filed 2000·Granted Jul 1, 2003·23 cites·21 claims
- 2784US6194531B1Method for production of cross-linked polymerNIPPON CATALYTIC CHEM IND·Filed 1997·Granted Feb 27, 2001·40 cites·18 claims
- 2882US6164455AProcess for classifying particulate hydrophilic polymer and sieving deviceNIPPON CATALYTIC CHEM IND·Filed 1998·Granted Dec 26, 2000·54 cites·6 claims
- 2982US5210298AMethod for production of acrylate and acrylate-containing polymerNIPPON CATALYTIC CHEM IND·Filed 1989·Granted May 11, 1993·29 cites·6 claims
- 3081US6599989B2Water-absorbent agents containing polycarboxylic amine chelating agentsNIPPON SKOKUBAI CO LTD·Filed 1999·Granted Jul 29, 2003·48 cites·30 claims
- 3181US6187902B1Production process of hydrophilic crosslinked polymerNIPPON CATALYTIC CHEM IND·Filed 1998·Granted Feb 13, 2001·42 cites·12 claims
- 3277US5624967AWater-absorbing resin and process for producing sameNIPPON CATALYTIC CHEM IND·Filed 1995·Granted Apr 29, 1997·87 cites·19 claims
- 3375US7153910B2Water-absorbent resin granule-containing composition and production process for water-absorbent resin granuleNIPPON CATALYTIC CHEM IND·Filed 2002·Granted Dec 26, 2006·9 cites·21 claims
- 3472US5338810AMethod for production of acrylate and acrylate-containing polymerNIPPON CATALYTIC CHEM IND·Filed 1993·Granted Aug 16, 1994·27 cites·27 claims
- 3570US7420018B2Water-absorbing agent production process with surface crosslinking and ion blockingNIPPON CATALYTIC CHEM IND·Filed 2005·Granted Sep 2, 2008·5 cites·16 claims
- 3670US7078458B2Method for production of hydrophilic resinNIPPON CATALYTIC CHEM IND·Filed 2004·Granted Jul 18, 2006·9 cites·19 claims
- 3769US6291636B1Manufacturing method of absorbent resinNIPPON CATALYTIC CHEM IND·Filed 1999·Granted Sep 18, 2001·73 cites·32 claims
- 3842US5720736AAbsorbent material, absorbent article, and method for production thereofNIPPON CATALYTIC CHEM IND·Filed 1996·Granted Feb 24, 1998·26 cites·28 claims
- 3938US5807361ABlood-absorbent resin composition and absorbent articlesNIPPON CATALYTIC CHEM IND·Filed 1996·Granted Sep 15, 1998·10 cites·11 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →