| 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 |