Granted Patent
Utility
US 4,457,762 · App. 06/456,394
Stabilized water slurries of carbonaceous materials
Inventors:
John G. Papalos, Jose L. Villa, Kathy A. Knitter, Arpad Savoly
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Jan 7, 1983
Inventors
John G. Papalos
Jose L. Villa
Kathy A. Knitter
Arpad Savoly
Assignee (at issue)
Diamond Shamrock Chemicals Company
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.