Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7661236 | Stab-in connector with expansion relief | William J. Platt, Yu Lin | 2010-02-16 |
| 6351919 | Compression relief section | Yu Lin, William J. Platt | 2002-03-05 |
| 5839246 | Grid framework for suspended ceiling | William J. Platt | 1998-11-24 |
| RE33501 | Fire-rated beam with expansion relief section | William J. Platt, Eugene E. Brady | 1990-12-25 |
| 4893444 | Fire expansion joint for ceiling runner | James C. Ollinger | 1990-01-16 |
| 4730433 | End detail for ceiling runner | James C. Ollinger | 1988-03-15 |
| 4606166 | Fire-rated beam with expansion relief section | William J. Platt, Eugene E. Brady | 1986-08-19 |
| 4580386 | Expansion clip on a ceiling runner | John M. Hemphill, Ernest B. Nute, Jr. | 1986-04-08 |