Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648531 | Process for producing acetic anhydride alone or acetic anhydride and acetic acid | Hiroto Tanigawa, Kazuyuki Akita | 1997-07-15 |
| 5625095 | Process for producing high purity acetic acid | Hiroyuki Miura, Masahiko Shimizu, Takashi Sato, Masahiro Kagotani | 1997-04-29 |