Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9975808 | Ultra-light cementitious compositions and related methods | Dennis Mark Lettkeman, John W. Wilson, William Kelly Bedwell, Gary F. Miller | 2018-05-22 |
| 9944556 | Compositions with synthetic gypsum and methods | Dennis Mark Lettkeman, John W. Wilson, Mike L. Cloud, Brian K. Ball, Doug Blackburn | 2018-04-17 |