Granted Patent
Utility
US 4,263,399 · App. 06/044,144
High phosphate process for making low calcium, smooth flow xanthan gum
Inventors:
Richard A. Empey, Jurgen G. Dominik
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: May 31, 1979
Inventors
Richard A. Empey
Jurgen G. Dominik
Assignee (at issue)
MERCK & CO., 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.