Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11014053 | Cellulose acetate-based asymmetric hollow fiber membrane | Haruhiko Kohyama, Yoshinori Takii | 2021-05-25 |
| 11007490 | Cellulose acetate-based hollow fiber membrane | Haruhiko Kohyama, Yoshinori Takii | 2021-05-18 |