Inventor
TAKENAKA JUNJI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “TAKENAKA JUNJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKUYAMA CORP
22 patentsUS9890324B2Feb 13, 2018
Photochromic curable composition, cured product thereof and laminate including the cured product
TOKUYAMA CORP2 citations73
US11066523B2Jul 20, 2021
Photochromic polyrotaxane compound and curable composition comprising the photochromic polyrotaxane compound
TOKUYAMA CORP3 citations72
US11767467B2Sep 26, 2023
Photochromic compound and curable composition containing said photochromic compound
TOKUYAMA CORP0 citations62
US11401276B2Aug 2, 2022
Chromene compound, curable composition comprising the compound, and optical article including a cured body of the curable composition
TOKUYAMA CORP1 citations62
US8012596B2Sep 6, 2011
Photochromic lens substrate
TOKUYAMA CORP5 citations62
US7976739B2Jul 12, 2011
Chromene compound
TOKUYAMA CORP3 citations62
US7754903B2Jul 13, 2010
Curable polycyclic compounds and process for the production thereof
TOKUYAMA CORP2 citations62
US12428517B2Sep 30, 2025
Moisture curable polyurethane composition and laminate
TOKUYAMA CORP0 citations60
US12077623B2Sep 3, 2024
Curable composition for optical materials, and optical material
TOKUYAMA CORP0 citations59
US12054568B2Aug 6, 2024
Optical material composition and optical material
TOKUYAMA CORP0 citations59
US11976149B2May 7, 2024
Curable composition for optical materials, and optical material
TOKUYAMA CORP0 citations59
US12428390B2Sep 30, 2025
Chromene compound and photochromic optical article
TOKUYAMA CORP0 citations52
US12297388B2May 13, 2025
Photochromic hydroxyurethane compound
TOKUYAMA CORP0 citations52
US11879097B2Jan 23, 2024
Photochromic compound, curable composition containing said photochromic compound, and optical article
TOKUYAMA CORP0 citations52
US11597874B2Mar 7, 2023
Photochromic curable composition
TOKUYAMA CORP0 citations49
US10884334B2Jan 5, 2021
Photocurable resin composition
TOKUYAMA CORP0 citations49
US12570894B2Mar 10, 2026
Photochromic compound and curable composition containing the photochromic compound
TOKUYAMA CORP0 citations48
US12222587B2Feb 11, 2025
Method of producing a plastic lens having a coating layer
TOKUYAMA CORP0 citations44
US8916071B2Dec 23, 2014
Chromene compound and curable composition
TOKUYAMA CORP0 citations41
US7728154B2Jun 1, 2010
Process for the preparation of 1-aryl-3,4-dihydro-1H-naphthalene-2-one
TOKUYAMA CORP0 citations37
US5629265AMay 13, 1997
Cyanoketone derivative and herbicide containing it as an active component
TOKUYAMA CORP0 citations37
US6878672B2Apr 12, 2005
Herbicidal emulsion compositions
TOKUYAMA CORP0 citations34