Granted Patent
Utility
US 4,530,764 · App. 06/514,396
Densification of phosphatic wastes and phosphoric acid slimes and solvent recovery
Inventors:
Iran L. Thomas, Chung J. Lai
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Jul 18, 1983
Inventors
Iran L. Thomas
Chung J. Lai
Assignee (at issue)
Occidental Research Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.