Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Operation of a coal deashing process

Operation of a coal deashing process

US Patent 4227994 · Granted Oct 14, 1980

Estimated economic value: $18,063,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Plastic concrete form2002
Method for sequentially co-processing heavy hydrocarbon and carbonaceous materia1988
Multi-stage coal liquefaction and fractionation method1987
Coal liquefaction with coal tar solvent1986
Process for the separation of entrained organic fluids from gaseous streams in a1983
Process for the discharge of ash concentrate from a coal deashing system1981
Process for the discharge of ash concentrate from a coal deashing system1981
Process for improving soluble coal yield in a coal deashing process1980