Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5791109 | Gypsum board and finishing system containing same | Brian G. Randall | 1998-08-11 |
| 5704179 | Finishing and roof deck systems containing fibrous mat-faced gypsum boards | Brian G. Randall | 1998-01-06 |
| 5644880 | Gypsum board and systems containing same | Brian G. Randall | 1997-07-08 |
| 5371989 | Use of fibrous mat-faced gypsum board in exterior finishing systems for buildings and shaft wall assemblies | Brian G. Randall | 1994-12-13 |
| 5319900 | Finishing and roof deck systems containing fibrous mat-faced gypsum boards | Brian G. Randall | 1994-06-14 |
| 5220762 | Fibrous mat-faced gypsum board in exterior and interior finishing systems for buildings | Brian G. Randall | 1993-06-22 |
| 5148645 | Use of fibrous mat-faced gypsum board in shaft wall assemblies and improved fire resistant board | Brian G. Randall, George F. Fowler, Ray W. Hinkel | 1992-09-22 |
| 4811538 | Fire-resistant door | George F. Fowler | 1989-03-14 |
| 4810569 | Fibrous mat-faced gypsum board | Brian G. Randall | 1989-03-07 |
| 4748771 | Fire door | James R. Van Dyke, Ray W. Hinkel | 1988-06-07 |
| 4722866 | Fire resistant gypsum board | Glenn Wilson | 1988-02-02 |
| 4695494 | Fire-resistant article and method of manufacture | George F. Fowler | 1987-09-22 |
| 4664707 | Fire resistant gypsum composition | Glenn Wilson | 1987-05-12 |
| 4647496 | Use of fibrous mat-faced gypsum board in exterior finishing systems for buildings | Brian G. Randall | 1987-03-03 |
| 4343127 | Fire door | Dale R. Greve | 1982-08-10 |