Granted Patent
Utility
US 4,213,913 · App. 06/019,966
Two-stage process for separating mixed fatty-acid esters
Inventor:
Armand J. de Rosset
Patented Case
View Patent ↗
Granted: Jul 22, 1980
Filed: Mar 12, 1979
Inventor
Armand J. de Rosset
Assignee (at issue)
UOP LLC
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.