Granted Patent
Utility
US 4,528,201 · App. 06/505,580
Alkali-treated lecithin in fats
Inventor:
Edward R. Purves
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Jun 20, 1983
Inventor
Edward R. Purves
Assignee (at issue)
The Procter & Gamble 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.