Granted Patent
Utility
US 4,582,819 · App. 06/680,348
Catalytic absorbent and a method for its preparation
Inventors:
J. W. Randolph Miller, John W. Ward
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Dec 11, 1984
Inventors
J. W. Randolph Miller
John W. Ward
Assignee (at issue)
Union Oil Company of California
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.