Granted Patent
Utility
US 4,314,945 · App. 05/863,354
Alkylene carbonate process
Inventors:
Charles H. McMullen, James R. Nelson, Bernard C. Ream, Joseph A. Sims, Jr.
Patented Case
View Patent ↗
Granted: Feb 9, 1982
Filed: Dec 22, 1977
Inventors
Charles H. McMullen
James R. Nelson
Bernard C. Ream
Joseph A. Sims, Jr.
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.