Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873368 | Process for producing acrylic acid | Kohei Sarumaru, Takeshi Shibano | 1989-10-10 |
| 4837360 | Process for producing acrolein and acrylic acid | Kohei Sarumaru, Takeshi Shibano | 1989-06-06 |