Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958224 | Process for deep desulfurization using combined hydrotreating-oxidation | Teh C. Ho, Chang S. Hsu, Gerald D. Dupre, Viktor Buchholz | 1999-09-28 |
| 4468231 | Cation ion exchange of coal | William Bartok, Howard Freund | 1984-08-28 |
| 4372750 | O-Alkylated/O-acylated coal and coal bottoms | — | 1983-02-08 |
| 4363714 | O-Alkylated/O-acylated coal liquids | Martin L. Gorbaty | 1982-12-14 |
| 4300995 | Oxygen-alkylation of carbonous material and products thereof | — | 1981-11-17 |
| 4300994 | Method for producing coke | — | 1981-11-17 |
| 4299684 | Demineralization of coal | — | 1981-11-10 |
| 4259168 | Treatment of coal to increase yields and improve physical characteristics of coal liquefaction distillates and bottoms | — | 1981-03-31 |
| 4259172 | Treatment of heavy coal fractions | — | 1981-03-31 |
| 4259173 | Treatment of coal liquids | Martin L. Gorbaty | 1981-03-31 |
| 4259084 | Pretreatment of solid, naturally-occurring carbonaceous material | — | 1981-03-31 |
| 4259167 | Formation of caking coals | — | 1981-03-31 |