Granted Patent
Utility
US 4,447,648 · App. 06/413,466
Process for making aldehydes from ketals
Inventor:
Richard W. Wegman
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Aug 31, 1982
Inventor
Richard W. Wegman
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.