Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4433732 | Cable tray protection system | Richard R. Licht, Joseph C. Peisert | 1984-02-28 |
| 4385135 | Intumescent sheet material containing low density fillers | Roger L. Langer | 1983-05-24 |
| 4305992 | Intumescent sheet material | Roger L. Langer | 1981-12-15 |
| 4273879 | Intumescent fire retardant composites | Roger L. Langer, Richard R. Licht | 1981-06-16 |