Granted Patent
Utility
US 4,874,854 · App. 06/785,624
Low viscosity heteropolysaccharides
Inventors:
George T. Colegrove, Thomas A. Lindroth
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Oct 8, 1985
Inventors
George T. Colegrove
Thomas A. Lindroth
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.