Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7921619 | Insulation batt having integral baffle vent | Richard Duncan | 2011-04-12 |
| 7644545 | Insulation batt having integral baffle vent | Kurt Mankell, Husnu M. Kalkanoglu, Mark Trabbold, Nick Flocco, Kenneth D. Knapp | 2010-01-12 |
| 5950387 | Wind-resistant shingle and method of applying | Kermit E. Stahl, Husnu M. Kalkanoglu, Robert L. Jenkins | 1999-09-14 |