Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790422 | Proppant mixtures | — | 2017-10-17 |
| 9725645 | Proppant with composite coating | Spyridon Monastiriotis, Avis Lloyd McCrary, Ralph Edward Barthel | 2017-08-08 |
| 9624421 | Dual function proppants | Avis Lloyd McCrary | 2017-04-18 |
| 9562187 | Manufacture of polymer coated proppants | Avis Lloyd McCrary | 2017-02-07 |