Granted Patent
Utility
US 4,260,741 · App. 06/051,319
Low-density xanthan gums
Inventor:
Harry R. Schuppner, Jr.
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Jun 22, 1979
Inventor
Harry R. Schuppner, Jr.
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.