Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11618824 | Composition comprising a concentrate of natural asphaltene in fluxing oil suitable for use in preparing asphalt blends | Bart Lungren, Brian J. Majeska, Joseph Drbohlav, III, Donald R. Sjogren, Gregory S Lee | 2023-04-04 |