Inventor
TAMITSUJI CHIKAYA
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAMITSUJI CHIKAYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGC INC
9 patentsUS11898018B2Feb 13, 2024
Liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell
AGC INC2 citations71
US11840589B2Dec 12, 2023
Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzer
AGC INC2 citations71
US11414502B2Aug 16, 2022
Fluorosulfonyl group or sulfonic acid group-containing polymer, its production method and its application
AGC INC2 citations71
US11242420B2Feb 8, 2022
Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods
AGC INC1 citations71
US12187821B2Jan 7, 2025
Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods
AGC INC0 citations61
US11851508B2Dec 26, 2023
Acid-type sulfonic acid group-containing polymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly, polymer electrolyte fuel cell and ion exchange membrane for water electrolysis
AGC INC0 citations61
US12098226B2Sep 24, 2024
Polymer, method for producing polymer, and method for producing membrane
AGC INC0 citations60
US10975053B2Apr 13, 2021
Production methods for 1,3-dioxolane compound and perfluoro(2,2-dimethyl-1,3-dioxole)
AGC INC0 citations60
US12503583B2Dec 23, 2025
Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell
AGC INC0 citations50
ASAHI GLASS CO LTD
3 patentsUS7934391B2May 3, 2011
Synthetic quartz glass body, process for producing the same, optical element, and optical apparatus
ASAHI GLASS CO LTD4 citations62
US10038188B2Jul 31, 2018
Cathode active material, process for its production, cathode and lithium ion secondary battery
ASAHI GLASS CO LTD0 citations47
US8043668B2Oct 25, 2011
Method for production of an ethylene/tetrafluorideethylene copolymer molded product
ASAHI GLASS CO LTD0 citations45