Inventor · disambiguated record
Kenji Ichikawa
Also filed as: ICHIKAWA KENJI
69 granted patents·40 pending applications·453 citations·filing 1981–2025
98Inventor score
Files withDAIKIN IND LTD45FUJIFILM CORP16MURAKAMI CORP15SHINAGAWA REFRACTORIES CO11OKI ELECTRIC IND CO LTD6
Top patents by PatentIndex Score
109 records- 0195US11767379B2Method for manufacturing fluoropolymerDAIKIN IND LTD·Filed 2019·Granted Sep 26, 2023·7 cites·13 claims
- 0293US7784765B2Mold, method for producing the same and magnetic recording mediumFUJIFILM CORP·Filed 2007·Granted Aug 31, 2010·12 cites·9 claims
- 0391US11512155B2Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2018·Granted Nov 29, 2022·3 cites·5 claims
- 0491US11279814B2Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2018·Granted Mar 22, 2022·2 cites·11 claims
- 0590US2025368814A1Method for manufacturing fluoropolymerDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 0689US12410266B2Method for manufacturing fluoropolymerDAIKIN IND LTD·Filed 2023·Granted Sep 9, 2025·0 cites·14 claims
- 0789US2024317907A1Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 0886US12012470B2Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2022·Granted Jun 18, 2024·0 cites·19 claims
- 0986US11148402B2Heat-resistant multilayer container and method for producing the sameTOYO SEIKAN GROUP HOLDINGS LTD·Filed 2019·Granted Oct 19, 2021·3 cites·8 claims
- 1086US4751204ATwo-part gunning refractory compositionSHINAGAWA REFRACTORIES CO·Filed 1985·Granted Jun 14, 1988·51 cites·12 claims
- 1186US2025361380A1Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 1286US2025092242A1Composition and stretched bodyDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 1385US7850441B2Mold structureFUJIFILM CORP·Filed 2007·Granted Dec 14, 2010·6 cites·6 claims
- 1485US4444430ASeat having pneumatic componentNISSAN MOTOR·Filed 1981·Granted Apr 24, 1984·73 cites·8 claims
- 1582US12404387B2Production method for fluoropolymer, surfactant for polymerization, and use of surfactantDAIKIN IND LTD·Filed 2022·Granted Sep 2, 2025·0 cites·11 claims
- 1680US2023220129A1Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and compositionDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 1779US12466905B2Composition and method for producing the sameDAIKIN IND LTD·Filed 2022·Granted Nov 11, 2025·0 cites·13 claims
- 1877US12503527B2Method for producing fluoropolymer, method for producing polytetrafluoroethylene, method for producing perfluoroelastomer, and compositionDAIKIN IND LTD·Filed 2022·Granted Dec 23, 2025·0 cites·4 claims
- 1977US7282528B2Electrode additiveDAIKIN IND LTD·Filed 2001·Granted Oct 16, 2007·15 cites·18 claims
- 2076US12195617B2Composition and stretched bodyDAIKIN IND LTD·Filed 2019·Granted Jan 14, 2025·0 cites·13 claims
- 2176US7888930B2Method for testing mold structure and magnetic recording mediumFUJIFILM CORP·Filed 2008·Granted Feb 15, 2011·3 cites·5 claims
- 2275US12492271B2Method for producing fluoropolymerDAIKIN IND LTD·Filed 2022·Granted Dec 9, 2025·0 cites·8 claims
- 2375US11383606B2Port locking actuator device for vehicle inletMURAKAMI CORP·Filed 2018·Granted Jul 12, 2022·2 cites·6 claims
- 2475US10797558B2Electric retracting unit for electric retractable view device for vehicleMURAKAMI CORP·Filed 2018·Granted Oct 6, 2020·3 cites·9 claims
- 2575US7674535B2Magnetic transfer master disk, its manufacturing method and magnetic transfer methodFUJIFILM CORP·Filed 2006·Granted Mar 9, 2010·3 cites·10 claims
- 2675US6265107B1Binder for rechargeable battery with nonaqueous electrolyte and battery electrode depolarizing mix prepared using the sameDAIKIN IND LTD·Filed 1997·Granted Jul 24, 2001·52 cites·16 claims
- 2774US2025226379A1Manufacturing method of electrode layerFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 2873US2025043042A1Production method of composition containing fluororesin and composition containing fluororesinDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 2972US11007678B2Production method of mold, manufacturing method of pattern sheet, production method of electroform, and production method of mold using electroformFUJIFILM CORP·Filed 2018·Granted May 18, 2021·1 cites·12 claims
- 3072US2024141155A1Production method of fluoropolymer composition and fluoropolymer compositionDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 3172US2025171627A1Polytetrafluoroethylene and stretched bodyDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 3272US2025059304A1Production method of fluoropolymerDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 3371US2024002558A1Production method of fluororesin, fluororesin and aqueous dispersionDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 3470US12460025B2Polytetrafluoroethylene production methodDAIKIN IND LTD·Filed 2022·Granted Nov 4, 2025·0 cites·10 claims
- 3570US10648095B2Production method of mold, manufacturing method of pattern sheet, production method of electroform, production method of mold using electroform, and originalFUJIFILM CORP·Filed 2017·Granted May 12, 2020·1 cites·11 claims
- 3670US6611027B2Protection transistor with improved edge structureOKI ELECTRIC IND CO LTD·Filed 2002·Granted Aug 26, 2003·16 cites·12 claims
- 3769US10953802B2Electric retractable view device for vehicle, and shaft outside-fitting gear incorporated in the deviceMURAKAMI CORP·Filed 2016·Granted Mar 23, 2021·1 cites·2 claims
- 3869US10654417B2Electric retractable view device for vehicleMURAKAMI CORP·Filed 2018·Granted May 19, 2020·2 cites·10 claims
- 3969US7196378B2Electrostatic-protection dummy transistor structureOKI ELECTRIC INDUSRTY CO LTD·Filed 2004·Granted Mar 27, 2007·16 cites·30 claims
- 4069US2024150505A1Production method of polytetrafluoroethylene powder and polytetrafluoroethylene powderDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 4169US2023303731A1Method for producing polytetrafluoroethylene and composition containing polytetrafluoroethyleneDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 4268US11634514B2Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and compositionDAIKIN IND LTD·Filed 2019·Granted Apr 25, 2023·0 cites·6 claims
- 4367US11491885B2Port locking actuator device for vehicle inletMURAKAMI CORP·Filed 2018·Granted Nov 8, 2022·1 cites·7 claims
- 4467US10212317B2Rearward imaging deviceMURAKAMI CORP·Filed 2015·Granted Feb 19, 2019·1 cites·5 claims
- 4567US2024117087A1Fluoropolymer production method, polytetrafluoroethylene production method and compositionDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 4666US12185472B2Metal pattern forming methodFUJIFILM CORP·Filed 2022·Granted Dec 31, 2024·0 cites·18 claims
- 4766US11056830B2Port locking actuator device for vehicle inletMURAKAMI CORP·Filed 2018·Granted Jul 6, 2021·2 cites·10 claims
- 4866US2025253340A1Fluororesin for binder for electrochemical devices, binder for electrochemical devices, electrode mixture, electrode, and secondary batteryDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 4966US2025253339A1Fluororesin for binder for electrochemical device, binder for electrochemical device, electrode mixture, electrode, and secondary batteryDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 5066US2025266418A1Manufacturing method of batteryFUJIFILM CORP·Filed 2025·Application pending·0 cites
Showing the top 50 of 109 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →