Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885390 | Alkoxylated ethylene glycol diamine bottoms products for rigid urethane foams | George P. Speranza, Jiang-Jen Lin | 1989-12-05 |
| 4820810 | Urea catalyst for preparation of sucrose polyols useful for rigid polyurethane foams | Howard P. Klein | 1989-04-11 |