Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816603 | Process for the production of methacrolein and methacrylic acid | Yoshiyuki Taniguchi, Masaaki Kato, Masao Kobayashi | 1989-03-28 |
| 4804778 | Process for producing methacrylic acid | Kazuhiro Ishii, Masaaki Kato | 1989-02-14 |
| 4803302 | Process for the production of methacrylic acid | Masaaki Kato, Masao Kobayashi | 1989-02-07 |