Inventor
TANAKA YUUJI
JP69 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA YUUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAIKIN IND LTD
16 patentsUS10538605B2Jan 21, 2020
Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
DAIKIN IND LTD8 citations83
US11512155B2Nov 29, 2022
Production method for fluoropolymer, surfactant for polymerization, and use of surfactant
DAIKIN IND LTD3 citations72
US11279814B2Mar 22, 2022
Production method for fluoropolymer, surfactant for polymerization, and use of surfactant
DAIKIN IND LTD2 citations72
US10870735B2Dec 22, 2020
Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
DAIKIN IND LTD1 citations72
US10793650B2Oct 6, 2020
Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
DAIKIN IND LTD2 citations72
US12404387B2Sep 2, 2025
Production method for fluoropolymer, surfactant for polymerization, and use of surfactant
DAIKIN IND LTD0 citations62
US12012470B2Jun 18, 2024
Production method for fluoropolymer, surfactant for polymerization, and use of surfactant
DAIKIN IND LTD0 citations62
US12006407B2Jun 11, 2024
Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
DAIKIN IND LTD0 citations62
US11814490B2Nov 14, 2023
Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
DAIKIN IND LTD0 citations62
US11692047B2Jul 4, 2023
Manufacturing method for low molecular weight polytetrafluoroethylene
DAIKIN IND LTD0 citations62
US11618806B2Apr 4, 2023
Method for producing composition containing low molecular weight polytetrafluoroethylene
DAIKIN IND LTD0 citations62
US12371349B2Jul 29, 2025
Method for removing fluorine-containing compound from waste water
DAIKIN IND LTD0 citations59
US12030790B2Jul 9, 2024
Method for removing fluorine-containing compound from waste water
DAIKIN IND LTD0 citations59
US11739205B2Aug 29, 2023
Method for producing composition containing low molecular weight polytetrafluoroethylene
DAIKIN IND LTD0 citations52
US11548989B2Jan 10, 2023
Method for producing composition containing low molecular weight polytetrafluoroethylene
DAIKIN IND LTD0 citations52
US12583947B2Mar 24, 2026
Method for producing fluoropolymer
DAIKIN IND LTD0 citations51
RICOH CO LTD
15 patentsUS10636579B2Apr 28, 2020
Photoelectric conversion element and solar cell
RICOH CO LTD2 citations73
US10727001B2Jul 28, 2020
Photoelectric conversion element
RICOH CO LTD3 citations72
US10651390B2May 12, 2020
Tertiary amine compound, photoelectric conversion element, and solar cell
RICOH CO LTD2 citations71
US8380109B2Feb 19, 2013
Image forming apparatus and process cartridge
RICOH CO LTD2 citations63
US7858278B2Dec 28, 2010
Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the electrophotographic photoreceptor
RICOH CO LTD2 citations63
US11502264B2Nov 15, 2022
Photoelectric conversion element and photoelectric conversion module
RICOH CO LTD0 citations62
US11101080B2Aug 24, 2021
Photoelectric conversion element and solar cell
RICOH CO LTD0 citations62
US11069485B2Jul 20, 2021
Photoelectric conversion element
RICOH CO LTD0 citations62
US11575095B2Feb 7, 2023
Photoelectric conversion device, process cartridge, and image forming apparatus
RICOH CO LTD0 citations61
US11756743B2Sep 12, 2023
Photoelectric conversion element
RICOH CO LTD0 citations60
US11081662B2Aug 3, 2021
Photoelectric conversion element and solar cell
RICOH CO LTD0 citations60
US10847323B2Nov 24, 2020
Photoelectric conversion element and solar cell
RICOH CO LTD1 citations60
US11706938B2Jul 18, 2023
Photoelectric conversion element and photoelectric conversion module
RICOH CO LTD0 citations52
US11594382B2Feb 28, 2023
Solar cell module
RICOH CO LTD0 citations52
US7897309B2Mar 1, 2011
Bisazo compound, 2-hydroxy-3-phenylcarbamoyl naphthalene compound and method manufacturing bisazo compound
RICOH CO LTD1 citations52
TANAKA YUUJI
7 patentsUS9640330B2May 2, 2017
Photoelectric conversion element and solar cell
TANAKA YUUJI5 citations72
US10367103B2Jul 30, 2019
Photoelectric conversion element
TANAKA YUUJI2 citations71
US5218149AJun 8, 1993
Body unit for a string musical instrument
TANAKA YUUJI10 citations66
US8679712B2Mar 25, 2014
Photoreceptor and image forming method, image forming apparatus, and process cartridge using the photoreceptor
TANAKA YUUJI2 citations62
US10693092B2Jun 23, 2020
Photoelectric conversion element and solar cell
TANAKA YUUJI1 citations60
US10763050B2Sep 1, 2020
Photoelectric conversion element
TANAKA YUUJI1 citations59
US8912348B2Dec 16, 2014
Tetrahydropyranyl compound and method for producing the tetrahydropyranyl compound
TANAKA YUUJI0 citations52
ARAI RYOTA
2 patentsITO YOICHI
1 patentHORIUCHI TAMOTSU
1 patentTAMOTO NOZOMU
1 patentKOIZUKA YUUSUKE
1 patentASANO TOMOHARU
1 patentHONDA TETSUYA
1 patentKANEI NAOMICHI
1 patentMATSUYAMA TSUYOSHI
1 patentYAMAMOTO SATOSHI
1 patentRICOH KK
1 patentShowing the top 50 of 69 patents by PatentIndex Score.