Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871819 | Ethylene copolymer and process for the production thereof | Akiyoshi Oonishi, Iwao Ishino, Yuji Ozeki | 1989-10-03 |
| 4802892 | Fuel oil additive and fuel oil having improved flowability | Tsutomu Isaka, Noriyuki Okada, Iwao Ishino, Nobuhiro Usami | 1989-02-07 |