Issued Patents 2023
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |