Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873368 | Process for producing acrylic acid | Koju Kadowaki, Kohei Sarumaru | 1989-10-10 |
| 4865886 | Process for preparation of water absorptive composite material | Kiichi Itoh | 1989-09-12 |
| 4842927 | Process for preparation of water absorptive composite | Kiichi Itoh | 1989-06-27 |
| 4837360 | Process for producing acrolein and acrylic acid | Koju Kadowaki, Kohei Sarumaru | 1989-06-06 |
| 4835020 | Process for preparation of water absorptive composite material | Kiichi Itoh | 1989-05-30 |