Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840484 | Conversion of gypsum waste into foamed construction material | David R. Drake | 2023-12-12 |
| 11780774 | Masonry material utilizing recycled construction and demolition waste | David R. Drake | 2023-10-10 |