Granted Patent
Utility
US 5,230,853 · App. 07/816,792
Process for making polysaccharide fibers
Inventors:
George T. Colegrove, Thomas A. Lindroth
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Jan 3, 1992
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.