Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868268 | Process for preparing polyurethanes from an organic diisocyanate ester | Hanns P. Muller | 1989-09-19 |
| 4855484 | Process for the preparation of 4-hydroxyphenyl 4-hydroxybenzoate and the use thereof | Hanns P. Muller | 1989-08-08 |