Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352941 | Process for purification of phenylhydrazine | Shinichi Hasegawa, Hiroshige Tomita | 1982-10-05 |
| 4336109 | Method for the recovery of acetone | Hirokazu Hosaka, Kenji Tanimoto, Kunihiko Tanaka, Toshiharu Morita, Katsuyuki Shiota +1 more | 1982-06-22 |