Granted Patent
Utility
US 4,513,151 · App. 06/557,271
Acetaldehyde process
Inventors:
Richard W. Wegman, David C. Busby
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Dec 2, 1983
Inventors
Richard W. Wegman
David C. Busby
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.