Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for processing oil shale in a rotary hearth

Method and apparatus for processing oil shale in a rotary hearth

US Patent 4341620 · Granted Jul 27, 1982

Estimated economic value: $12,263,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Fiber reinforced gel for use in subterranean treatment processes1995
Method and apparatus for sealing a wellbore or well casing screen1994
Method of controlling flow in a soil venting well1994
Selective permeability reduction in a subterranean hydrocarbon-bearing formation1991
Oil shale retorting with steam and produced gas1991
Process for diluting aqueous polymer solutions1985
Method for retorting carbonaceous particles1984