Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873368 | Process for producing acrylic acid | Koju Kadowaki, Takeshi Shibano | 1989-10-10 |
| 4837360 | Process for producing acrolein and acrylic acid | Koju Kadowaki, Takeshi Shibano | 1989-06-06 |
| 4803190 | Process for production of composite oxide catalysts | Etsuji Yamamoto | 1989-02-07 |