Granted Patent
Utility
US 4,877,765 · App. 07/050,998
Adsorptive material for the removal of chlorophyll, color bodies and phospholipids from glyceride oils
Inventors:
James Neil Pryor, James M. Bogdanor, William A. Welsh
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: May 15, 1987
Inventors
James Neil Pryor
James M. Bogdanor
William A. Welsh
Assignee (at issue)
W. R. Grace & Co.
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.