Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361613 | Composite construction materials with improved fire resistance | Ben R. Bogner, Keith B. Bozer, Robert H. Leitheiser | 1982-11-30 |
| 4318999 | Low fire hazard rigid urethane insulation foam, polyol mixtures used in the manufacture thereof, and method for manufacture thereof | William J. Pentz | 1982-03-09 |