Granted Patent
Utility
US 4,939,281 · App. 07/368,009
Method for recovering solid molybdenum compounds
Inventors:
Edward T. Marquis, John R. Sanderson, Kenneth P. Keating
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jun 19, 1989
Inventors
Edward T. Marquis
John R. Sanderson
Kenneth P. Keating
Assignee (at issue)
Texaco Chemical Inc.
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.