Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12187821 | Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods | Takeshi Hirai, Daisuke Jomuta | 2025-01-07 |
| 12098226 | Polymer, method for producing polymer, and method for producing membrane | Takeshi Hirai, Daisuke Jomuta, 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, Daisuke Jomuta | 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, Daisuke Jomuta | 2023-12-26 |
| 11840589 | Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzer | Takeshi Hirai, Daisuke Jomuta | 2023-12-12 |
| 11414502 | Fluorosulfonyl group or sulfonic acid group-containing polymer, its production method and its application | Takeshi Hirai, Daisuke Jomuta | 2022-08-16 |
| 11242420 | Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methods | Takeshi Hirai, Daisuke Jomuta | 2022-02-08 |
| 10975053 | Production methods for 1,3-dioxolane compound and perfluoro(2,2-dimethyl-1,3-dioxole) | Daisuke Jomuta, Yusuke TAKAHIRA, Nobuyuki Otozawa | 2021-04-13 |
| 10038188 | Cathode active material, process for its production, cathode and lithium ion secondary battery | Widjaja Hardiyanto, Naoki Yoshida, Sadatatsu Ikeda | 2018-07-31 |
| 8735308 | Optical member comprising TiO2-containing silica glass | Akio Koike, Kunio Watanabe, Tomonori Ogawa | 2014-05-27 |
| 8656735 | Method for treating surface of oxide glass with fluorinating agent | Kunio Watanabe | 2014-02-25 |
| 8240172 | Process for production of synthetic quartz glass | Kunio Watanabe, Akio Koike | 2012-08-14 |
| 8043668 | Method for production of an ethylene/tetrafluorideethylene copolymer molded product | Seiji HIGASHI | 2011-10-25 |
| 7934391 | Synthetic quartz glass body, process for producing the same, optical element, and optical apparatus | Kunio Watanabe, Kaname Okada, Daisuke Kobayashi | 2011-05-03 |