Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10837172 | Tapered kerf construction | Michael P. Spihlman, Peder J. Gulbrandsen | 2020-11-17 |
| 10590288 | Acoustically transparent sandable coating | Peder J. Gulbrandsen, Rafael Bury | 2020-03-17 |
| 10316201 | Acoustically transparent sandable coating | Peder J. Gulbrandsen, Rafael Bury | 2019-06-11 |
| 9777478 | Drywall sheet end joint | Peder J. Gulbrandsen | 2017-10-03 |
| 9738796 | Acoustically transparent coating | Rafael Bury, Donghong Li | 2017-08-22 |
| 9598864 | Suspension system for flat drywall ceiling | James J. Lehane, Peder J. Gulbrandsen | 2017-03-21 |
| 9476194 | Framing clips | Peder J. Gulbrandsen | 2016-10-25 |
| 9464433 | Self-tightening splice | Peder J. Gulbrandsen, Abraham M. Underkofler | 2016-10-11 |