Granted Patent
Utility
US 4,227,012 · App. 05/957,613
Oxidation of methyl benzenes in the presence of acetic acid and a dehydrating agent
Inventors:
George Suld, James E. Lyons, Robert W. Shinn
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Nov 3, 1978
Inventors
George Suld
James E. Lyons
Robert W. Shinn
Assignee (at issue)
SUNTEC CO., LTD.
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.