Granted Patent
Utility
US 4,353,835 · App. 06/250,236
Process for hydrogenating unsaturated carboxylic acids and carboxylic acid esters
Inventor:
Harold E. Swift
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Apr 2, 1981
Inventor
Harold E. Swift
Assignee (at issue)
Gulf Research & Development Company
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.