Cellular solvent refined coal and methods for making same
US4128401A · kind A · utility
6Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | May 4, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described is a cellular form of solvent refined coal characterized by a decreased density enabling it to float on water. Various methods are presented for introducing cells throughout the coal including the use of cell-forming agents; sintering; particle or gas dispersion; and leaching salts incorporated in the coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.