Inventor · disambiguated record
Shigetoshi Kuma
Also filed as: KUMA SHIGETOSHI
23 granted patents·14 pending applications·63 citations·filing 2001–2020
92Inventor score
Top patents by PatentIndex Score
37 records- 0193US8044165B2Process for producing resin for optical materialMITSUI CHEMICALS INC·Filed 2007·Granted Oct 25, 2011·14 cites·7 claims
- 0286US6770735B2Process for preparing a thiol compoundMITSUI CHEMICALS INC·Filed 2003·Granted Aug 3, 2004·20 cites·18 claims
- 0385US6596841B2Polythiol, polymerizable composition, resin and lens, and process for preparing thiol compoundMITSUI CHEMICALS INC·Filed 2001·Granted Jul 22, 2003·18 cites·20 claims
- 0480US9227925B2Process for producing aldehyde compoundsKUMA SHIGETOSHI·Filed 2012·Granted Jan 5, 2016·4 cites·17 claims
- 0571US7396900B2Thiourethane-based optical materialMITSUI CHEMICALS INC·Filed 2007·Granted Jul 8, 2008·1 cites·2 claims
- 0669US11254783B2Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resinMITSUI CHEMICALS INC·Filed 2020·Granted Feb 22, 2022·0 cites·3 claims
- 0769US9487475B2Preparation method of aldehyde compound with limited amount of acrylonitrileMITSUI CHEMICALS INC·Filed 2013·Granted Nov 8, 2016·1 cites·5 claims
- 0867US10640605B2Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resinMITSUI CHEMICALS INC·Filed 2018·Granted May 5, 2020·0 cites·16 claims
- 0966US10399930B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2017·Granted Sep 3, 2019·0 cites·5 claims
- 1062US10399929B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2017·Granted Sep 3, 2019·0 cites·5 claims
- 1161US9809533B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2013·Granted Nov 7, 2017·0 cites·6 claims
- 1259US7244808B2Thiourethane-based optical materialMITSUI CHEMICALS INC·Filed 2003·Granted Jul 17, 2007·3 cites·20 claims
- 1358US2009082544A1Process for producing polythiol compound for optical materials, and polymerizable composition containing polythiol compoundMITSUI CHEMICALS INC·Filed 2007·Application pending·0 cites
- 1458US2009264613A1Process for producing (poly)thiol compound for use as optical material, and polymerizable composition containing the compoundMITSUI CHEMICALS INC·Filed 2007·Application pending·0 cites
- 1557US2011176220A1Process for Producing Polythiol Compound for Optical Materials, and Polymerizable Composition Containing Polythiol CompoundMITSUI CHEMICALS INC·Filed 2011·Application pending·0 cites
- 1656US6770734B2Polythiol compoundMITSUI CHEMICALS INC·Filed 2002·Granted Aug 3, 2004·2 cites·6 claims
- 1756US2011245530A1Process for producing pentaerythritol mercaptocarboxylic esters and polymerizable compositions containing the estersMITSUI CHEMICALS INC·Filed 2011·Application pending·0 cites
- 1856US2010280213A1Process for producing polythiol compound for optical materials, and polymerizable composition containing polythiol compoundMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 1956US2011178264A1Process for producing (poly)thiol compound for use as optical material, and polymerizable composition containing the compoundMITSUI CHEMICALS INC·Filed 2011·Application pending·0 cites
- 2056US2009281269A1Process for producing pentaerythritol mercaptocarboxylic esters and polymerizable compositions containing the estersMITSUI CHEMICALS INC·Filed 2007·Application pending·0 cites
- 2155US10696627B2Process for producing pentaerythritol mercaptocarboxylic acid ester, polymerizable composition, resin, optical material, and lensMITSUI CHEMICALS INC·Filed 2016·Granted Jun 30, 2020·0 cites·6 claims
- 2255US2009270583A1Process for Producing Pentaerythritol Mercaptocarboxylic Acid Ester, Pentaerythritol Mercaptocarboxylic Acid Ester Obtained by the Same, and Use ThereofMITSUI CHEMICALS INC·Filed 2005·Application pending·0 cites
- 2354US2010298521A1Process for producing (poly)thiol compound for use as optical material, and polymerizable composition containing the compoundMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 2454US2010292431A1Process for producing pentaerythritol mercaptocarboxylic esters and polymerizable compositions containing the estersMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 2553US10774038B2Process for producing cyanonorborneneMITSUI CHEMICALS INC·Filed 2018·Granted Sep 15, 2020·0 cites·6 claims
- 2653US2011065887A1Process for producing pentaerythritol mercaptocarboxylic acid ester, pentaerythritol mercaptocarboxylic acid ester obtained by the same, and use thereofMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 2752US9678246B2Polymerizable composition for optical materialMITSUI CHEMICALS INC·Filed 2013·Granted Jun 13, 2017·0 cites·10 claims
- 2852US2016046827A1Film comprising copolymer or compositionMITSUI CHEMICALS INC·Filed 2014·Application pending·0 cites
- 2951US11840599B2Thiol-containing composition for optical material and polymerizable composition for optical materialMITSUI CHEMICALS INC·Filed 2020·Granted Dec 12, 2023·0 cites·18 claims
- 3051US9464154B2Process for producing polyurethane resinMITSUI CHEMICALS INC·Filed 2013·Granted Oct 11, 2016·0 cites·20 claims
- 3150US10131767B2Polymerizable composition for optical material, optical material obtained from polymerizable composition, and manufacturing method of optical materialMITSUI CHEMICALS INC·Filed 2014·Granted Nov 20, 2018·0 cites·27 claims
- 3249US2011245531A1Process for producing pentaerythritol mercaptocarboxylic acid ester, pentaerythritol mercaptocarboxylic acid ester obtained by the same, and use thereofMITSUI CHEMICALS INC·Filed 2011·Application pending·0 cites
- 3348US9475760B2Preparation method of aldehyde compound using a metal compound and a phosphorus compoundMITSUI CHEMICALS INC·Filed 2013·Granted Oct 25, 2016·0 cites·6 claims
- 3445US10844010B2Process for producing (poly)sulfide compound and process for producing episulfide compoundMITSUI CHEMICALS INC·Filed 2017·Granted Nov 24, 2020·0 cites·8 claims
- 3542US8772441B2Polyurethanes polymerizable composition and method for producing optical resin of the sameKUMA SHIGETOSHI·Filed 2005·Granted Jul 8, 2014·0 cites·6 claims
- 3640US10196501B2Polymerizable composition for optical material, optical material produced from same, and process for producing sameMITSUI CHEMICALS INC·Filed 2015·Granted Feb 5, 2019·0 cites·13 claims
- 3739US2019106529A1Xylylene diisocyanate composition, resin, and polymerizable compositionMITSUI CHEMICALS INC·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →