Inventor
TAKEMURA KOUHEI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “TAKEMURA KOUHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI GAS CHEMICAL CO
13 patentsUS11945791B2Apr 2, 2024
Allyl compound and composition for optical material
MITSUBISHI GAS CHEMICAL CO0 citations62
US11919877B2Mar 5, 2024
Production method for 1,2,3,5,6-pentathiepane
MITSUBISHI GAS CHEMICAL CO0 citations60
US11858920B2Jan 2, 2024
Episulfide compound and composition for optical material
MITSUBISHI GAS CHEMICAL CO0 citations60
US11186673B2Nov 30, 2021
Composition for use as optical material
MITSUBISHI GAS CHEMICAL CO0 citations60
US11078363B2Aug 3, 2021
Optical material composition
MITSUBISHI GAS CHEMICAL CO0 citations58
US10982094B2Apr 20, 2021
Optical material composition
MITSUBISHI GAS CHEMICAL CO0 citations58
US12552902B2Feb 17, 2026
Composition for optical material
MITSUBISHI GAS CHEMICAL CO0 citations57
US12486352B2Dec 2, 2025
Composition, and optical material and lens using same
MITSUBISHI GAS CHEMICAL CO0 citations56
US10047043B2Aug 14, 2018
Thiol compound composition for optical material
MITSUBISHI GAS CHEMICAL CO0 citations52
US9914799B2Mar 13, 2018
Composition for optical material and method for producing same, and optical material produced from composition for optical material
MITSUBISHI GAS CHEMICAL CO0 citations52
US9663618B2May 30, 2017
Optical material composition, and application for same
MITSUBISHI GAS CHEMICAL CO0 citations52
US9260566B2Feb 16, 2016
Composition for optical materials, process for production thereof, and optical materials made from the composition
MITSUBISHI GAS CHEMICAL CO0 citations52
US9322957B2Apr 26, 2016
Method for producing optical material
MITSUBISHI GAS CHEMICAL CO0 citations42
SUMITOMO RUBBER IND
6 patentsUS6645089B2Nov 11, 2003
Golf ball
SUMITOMO RUBBER IND29 citations92
US6096830AAug 1, 2000
Thermoplastic elastomer composition, process for producing the same and golf ball using the same for cover
SUMITOMO RUBBER IND33 citations92
US5833552ANov 10, 1998
Golf ball
SUMITOMO RUBBER IND45 citations92
US5733977AMar 31, 1998
Solid golf ball
SUMITOMO RUBBER IND34 citations92
US6354966B1Mar 12, 2002
Multi-piece solid golf ball
SUMITOMO RUBBER IND18 citations83
US5653647AAug 5, 1997
Solid golf ball
SUMITOMO RUBBER IND0 citations52
DAIKIN IND LTD
3 patentsUS12486393B2Dec 2, 2025
Composition for fluorine rubber crosslinking and molded article
DAIKIN IND LTD0 citations62
US12194717B2Jan 14, 2025
Air management system member and fluororubber composition
DAIKIN IND LTD0 citations51
US12227603B2Feb 18, 2025
Compressed member for electrochemical device
DAIKIN IND LTD0 citations44