Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853419 | Distilled products of polyethylene terephthalate polymers and polycarboxylic acid-containing polyols and polymeric foams obtained therefrom | Richard K. Hallmark | 1989-08-01 |
| 4833182 | Isocyanate-polyester polyol binder for manufacture of cellulosic composites | Michael G. Israel, George A. Grozdits | 1989-05-23 |