Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Multiple hearth apparatus and process for thermal treatment of carbonaceous materials

Multiple hearth apparatus and process for thermal treatment of carbonaceous materials

US Patent 4626258 · Granted Dec 2, 1986

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and apparatus for reducing the by-product content of carbonaceous materia1998
Process for treating carbonaceous materials1998
Method and apparatus for upgrading carbonaceous fuel1994
Apparatus and process for steam treating carbonaceous material1991
Multiple hearth apparatus and process for thermal treatment of carbonaceous mate1988
Apparatus and process for thermal treatment of organic carbonaceous materials1984
Self-cleaning screw conveyor1982
Filter apparatus1980