Granted Patent
Utility
US 4,468,523 · App. 06/388,855
Synthesis of dialkyl oxalates by the heterogeneously catalyzed oxidative carbonylation of alcohols
Inventors:
John J. Leonard, John A. Sofranko
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Jun 16, 1982
Inventors
John J. Leonard
John A. Sofranko
Assignee (at issue)
Atlantic Richfield Company
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.