Granted Patent
Utility
US 4,117,250 · App. 05/863,352
Continuous process for producing alkylene glycols from alkylene carbonates
Inventors:
Robert D. Foster, Thomas A. Maliszewski, Joseph A. Sims, Jr., Glenn A. Taylor
Patented Case
View Patent ↗
Granted: Sep 26, 1978
Filed: Dec 22, 1977
Inventors
Robert D. Foster
Thomas A. Maliszewski
Joseph A. Sims, Jr.
Glenn A. Taylor
Assignee (at issue)
Union Carbide Corporation
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.