Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11927301 | System and method for reinforcing an existing wall structure to support hanging a load from the wall using a solidifiable fire-retardant composition | — | 2024-03-12 |
| 9909330 | Method and apparatus to fill and fire proof holes in concrete floors | Robert W. Johnson | 2018-03-06 |
| 9765541 | Method and apparatus to fill and fire proof holes in concrete floors | Robert W. Johnson | 2017-09-19 |
| 9366044 | Method and apparatus to fill and fire proof holes in concrete floors of commercial buildings utilizing a precast plug | Robert W. Johnson | 2016-06-14 |
| 9316009 | Method and apparatus to fill and fire proof holes in concrete floors of commercial buildings utilizing a precast plug | Robert W. Johnson | 2016-04-19 |
| 9145696 | Method and apparatus to fill and fire proof holes in concrete floors of commercial buildings utilizing a precast plug | Robert W. Johnson | 2015-09-29 |
| 8959863 | Method and apparatus to fill and fire proof holes in concrete floors of commercial buildings utilizing a precast plug | Robert W. Johnson | 2015-02-24 |