Granted Patent
Utility
US 4,950,799 · App. 07/351,925
Process for catalytic reduction of carboxylic acids to aldehydes
Inventor:
Duane C. Hargis
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: May 15, 1989
Inventor
Duane C. Hargis
Assignee (at issue)
Ethyl 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.