Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871815 | Method of making chlorosulfonated polyethylene | Tatsushi Nakagawa, Yasuhiro Sakanaka | 1989-10-03 |
| 4663396 | Method for producing chlorosulfonated polyethylene with controlling addition amount of sulfur of the chlorosulfonated polyethylene | Tatsushi Nakagawa, Yasuhiro Sakanaka | 1987-05-05 |
| 4544709 | Process for producing chlorosulfonated polyethylene using a mixed solvent | Tatsushi Nakagawa, Yasuhiro Sakanaka | 1985-10-01 |
| 4234704 | Chloroprene polymer composition | Yasuhiro Sakanaka | 1980-11-18 |