Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696293 | Catalyst composition for producing polyether polyamine and production method of polyether polyamine by use of the catalysts composition | Yoji Hirasawa, Keiichi Okajima, Julius John Batty, Brian L. Booth | 1997-12-09 |