Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10471437 | Process for the manufacture of Trinidad Lake Asphalt cold milled | — | 2019-11-12 |
| 9926493 | Process for the removal of the heavy oil from tar sand (either oil/hydrocarbon wet or water wet deposits) and the cleaning up of the effluent | — | 2018-03-27 |
| 8852332 | Synthetic modifier for hot asphaltic mixes for road paving and method of making same | — | 2014-10-07 |
| 7442311 | Emulsion and effluent treatment processes | — | 2008-10-28 |
| 6558462 | Method of making a powdered product from Trinidad Lake Asphalt for use in a road building mix | — | 2003-05-06 |
| 6277904 | Tires/retreads including trinidad lake asphalt as a component thereof | — | 2001-08-21 |