Granted Patent
Utility
US 4,692,227 · App. 06/936,521
Oxidation of organic compounds using thallium ions
Inventors:
Robert M. Spotnitz, Robert P. Kreh
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Dec 1, 1986
Inventors
Robert M. Spotnitz
Robert P. Kreh
Assignee (at issue)
W. R. Grace & Co.
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.