Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960958 | Catalysts for catalytic pyrolysis of phenol distillation residue and process for recovering useful substances by pyrolysis the same | Tetsuo Imamura, Tatsuo Shirahata | 1990-10-02 |