Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728723 | Process for purification of polyphenylene-sulfide | Yoshiaki Nakamura, Hirobumi Ishikawa | 1988-03-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728723 | Process for purification of polyphenylene-sulfide | Yoshiaki Nakamura, Hirobumi Ishikawa | 1988-03-01 |