Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883826 | Tertiary amine-containing polyols prepared in a mannich condensation reaction using a mixture of alkanolamines | J. E. Marugg, J. A. Thoen | 1989-11-28 |
| 4877879 | Preparation of polyether compositions | — | 1989-10-31 |