Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10689557 | Asphalt water-based drilling fluid additive | — | 2020-06-23 |
| 10538918 | Shingle sealing arrangements | David P. Aschenbeck, James E. Loftus, Donn R. Vermilion, Lawrence J. Grubka, Carmen Anthony LaTorre +8 more | 2020-01-21 |