Granted Patent
Utility
US 4,364,741 · App. 06/247,702
Oil slurries of carbonaceous materials
Inventor:
Jose' L. Villa
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Mar 26, 1981
Inventor
Jose' L. Villa
Assignee (at issue)
Diamond Shamrock 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.