Granted Patent
Utility
US 4,536,600 · App. 06/497,948
Polyoxyalkylenepolyacrylamides and the preparation thereof
Inventors:
Ernest L. Yeakey, Lewis W. Watts, Jr.
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: May 25, 1983
Inventors
Ernest L. Yeakey
Lewis W. Watts, Jr.
Assignee (at issue)
Texaco 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.