Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4367147 | Method of recovering characteristics of deteriorated cation exchange membrane | Toru Seita, Akihiko Shimizu | 1983-01-04 |
| 4200538 | Process for preparing cation-exchange membrane | Toru Seita, Kenji Takahashi, Akihiko Shimizu | 1980-04-29 |
| 4189540 | Process for producing cation exchange membrane by impregnating a diene monomer having carboxylic acid groups into a fluorinated membrane having cation exchange groups and polymerizing | Toru Seita, Kenji Takahashi, Akihiko Shimizu | 1980-02-19 |