Granted Patent
Utility
US 5,364,541 · App. 07/894,702
Method to impart coffee stain resistance to polyamide textile substrates
Inventors:
Lidia T. Calcaterra, Mathias P. Koljack, Qamardin Farishta, Michael G. Koehler, William B. Bedwell, Dale A. Hangey, George D. Green
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Jun 5, 1992
Inventors
Lidia T. Calcaterra
Mathias P. Koljack
Qamardin Farishta
Michael G. Koehler
William B. Bedwell
Dale A. Hangey
George D. Green
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.