Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837337 | Process for producing pyrrolidone derivative | Masao Miyake | 1989-06-06 |
| 4824913 | Process for preparing water-soluble polymer | Shigeru Sawayama, Kohichi Satoh | 1989-04-25 |
| 4783270 | Coagulant for minute mineral particles in suspension and method for coagulating thereof | Shigeru Sawayama, Kenji Mori | 1988-11-08 |
| 4567300 | Process for producing N-substituted formamides | Shigeru Sawayama, Kohichi Satoh | 1986-01-28 |