Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5465547 | Lightweight cementitious roofing | — | 1995-11-14 |
| 5387282 | Structural cementitious composition and method of manufacturing the same | — | 1995-02-07 |
| 5323581 | Lightweight cementitious roofing | — | 1994-06-28 |
| 5290355 | Roofing shingle composition, method of formulation, and structure | — | 1994-03-01 |
| 5210989 | Lightweight cementitious roofing, tapered and recessed | — | 1993-05-18 |