Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12187821 | Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods | Takeshi Hirai, Chikaya Tamitsuji | 2025-01-07 |
| 12098226 | Polymer, method for producing polymer, and method for producing membrane | Takeshi Hirai, Chikaya Tamitsuji, Takumi Okuyama | 2024-09-24 |
| 11898018 | Liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell | Takumi Okuyama, Takeshi Hirai, Susumu Saito, Chikaya Tamitsuji | 2024-02-13 |
| 11851508 | 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 | Takeshi Hirai, Susumu Saito, Hiroyuki Watabe, Chikaya Tamitsuji | 2023-12-26 |
| 11840589 | Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzer | Takeshi Hirai, Chikaya Tamitsuji | 2023-12-12 |
| 11414502 | Fluorosulfonyl group or sulfonic acid group-containing polymer, its production method and its application | Takeshi Hirai, Chikaya Tamitsuji | 2022-08-16 |
| 11242420 | Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods | Takeshi Hirai, Chikaya Tamitsuji | 2022-02-08 |
| 10975053 | Production methods for 1,3-dioxolane compound and perfluoro(2,2-dimethyl-1,3-dioxole) | Yusuke TAKAHIRA, Nobuyuki Otozawa, Chikaya Tamitsuji | 2021-04-13 |
| 10358400 | Method for producing olefin containing chlorine and fluorine | Yusuke TAKAHIRA | 2019-07-23 |
| 9969890 | Fluorinated ether compound, composition for forming hard coating layer, and article having hard coating layer | Kiyotaka Takao, Nobuyuki Otozawa, Kuniko Okano, Taiki Hoshino | 2018-05-15 |
| 9637650 | Fluorinated ether compound, fluorinated ether composition and coating liquid, and substrate having surface-treated layer and method for its production | Eisuke Murotani, Taiki Hoshino, Akira Isobe, Daisuke Shirakawa, Nobuyuki Otozawa | 2017-05-02 |
| 9598345 | Method for producing unsaturated acid ester or unsaturated acid | Tomoyuki Fujita, Koichi Murata, Naoko Shirota, Yusuke Suzuki | 2017-03-21 |
| 9540404 | Fluorinated ether compound, fluorinated ether composition and coating liquid, and substrate having surface-treated layer and method for its production | Eisuke Murotani, Taiki Hoshino, Akinobu Kunimoto, Nobuyuki Otozawa | 2017-01-10 |