Inventor
KAWAGUCHI MASARU
JP22 patents
⚠️ This page may combine multiple inventors who share the name “KAWAGUCHI MASARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI CHEMICALS INC
19 patentsUS9777103B2Oct 3, 2017
Polythiol composition, polymerizable composition for optical material and use thereof
MITSUI CHEMICALS INC6 citations84
US8044165B2Oct 25, 2011
Process for producing resin for optical material
MITSUI CHEMICALS INC14 citations84
US10266636B2Apr 23, 2019
Process for producing episulfide compound for optical material, episulfide-containing composition, and polymerizable composition for optical material including the same composition
MITSUI CHEMICALS INC2 citations72
US9637584B2May 2, 2017
Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof
MITSUI CHEMICALS INC1 citations62
US9605105B2Mar 28, 2017
Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof
MITSUI CHEMICALS INC1 citations62
US9181179B2Nov 10, 2015
Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof
MITSUI CHEMICALS INC2 citations62
US9181180B2Nov 10, 2015
Method for producing polythiol compound, polymerizable composition for optical material, and uses thereof
MITSUI CHEMICALS INC1 citations62
US12064908B2Aug 20, 2024
Injection molding apparatus, injection molding method and production method of molded product using injection molding apparatus, and laminated lens
MITSUI CHEMICALS INC1 citations61
US6933411B2Aug 23, 2005
Aromatic diamine and polyimide thereof
MITSUI CHEMICALS INC3 citations61
US11248077B2Feb 15, 2022
Polymerizable composition for optical material and molded product
MITSUI CHEMICALS INC1 citations60
US12583964B2Mar 24, 2026
Polythiol composition, polymerizable composition, resin, molded article, optical material, and lens
MITSUI CHEMICALS INC0 citations59
US11827736B2Nov 28, 2023
Polythiol composition, polymerizable composition, resin, molded body, optical material, and lens
MITSUI CHEMICALS INC0 citations59
US11753367B2Sep 12, 2023
Xylylene diisocyanate composition, polymerizable composition for optical material, resin, molded article, optical element, and lens
MITSUI CHEMICALS INC0 citations56
US10858473B2Dec 8, 2020
Polythiol composition, polymerizable composition for optical material and use thereof
MITSUI CHEMICALS INC0 citations52
US10858472B2Dec 8, 2020
Polythiol composition, polymerizable composition for optical material and use thereof
MITSUI CHEMICALS INC0 citations52
US10921489B2Feb 16, 2021
Polymerizable composition for optical material, optical material obtained from the composition, and plastic lens
MITSUI CHEMICALS INC0 citations50
US6737503B2May 18, 2004
Aromatic diamine and polyimide thereof
MITSUI CHEMICALS INC1 citations48
US12486239B2Dec 2, 2025
Benzotriazole compound, light absorber, and resin composition
MITSUI CHEMICALS INC0 citations46
US10844010B2Nov 24, 2020
Process for producing (poly)sulfide compound and process for producing episulfide compound
MITSUI CHEMICALS INC0 citations40