Granted Patent
Utility
US 5,648,564 · App. 08/576,778
Process for the formation, isolation and purification of comestible xanthophyll crystals from plants
Inventors:
Rodney L. Ausich, David J. Sanders
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Dec 21, 1995
Inventors
Rodney L. Ausich
David J. Sanders
Assignee (at issue)
KEMIN INDUSTRIES, INC.
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.