Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 10920417 | Fire-resistant building joint system | John C. Hulteen, George W. Frost, Richard J. Haffner, Ernst Schmidt | 2021-02-16 | $68,262,000 |
| 6153668 | Low density fire barrier material and method of making | D. Max Harshbarger | 2000-11-28 | $41,581,000 |
| 5175197 | Water-based intumescent fire barrier caulk | Roger L. Langer | 1992-12-29 | $8,799,000 |