Granted Patent
Utility
US 4,647,470 · App. 06/802,646
Low-acetyl gellan gum blends
Inventors:
George R. Sanderson, Ross Clark, Ken Clare, David J. Pettitt
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Nov 27, 1985
Inventors
George R. Sanderson
Ross Clark
Ken Clare
David J. Pettitt
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.