Patent · US Expired

Catalytic process for liquefying coal

US4083769A · kind A · utility

12Cited by
8References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 30, 1976
Grant dateApr 11, 1978
Priority date—
Expiry dateNov 30, 1996

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10G1/002
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A process for liquefying coal employing in series a low temperature preheated zone, a higher temperature non-catalytic hydrocracking zone and a catalytic hydrogenation zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.