Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663113 | Ammoxidation catalyst composition | Ken Someya | 1997-09-02 |
| 5658842 | Ammoxidation catalyst composition, and process for producing acrylonitrile or methacrylonitrile using the same | Ken Someya, Kunitoshi Aoki, Osamu Nagano | 1997-08-19 |
| 5629443 | Highly purified acetonitrile and process for purifying crude acetonitrile | Shigeo Nakamura, Shigeru Kurihara, Minoru Saitoh | 1997-05-13 |