Granted Patent
Utility
US 5,348,786 · App. 08/042,176
Method and composition to enhance acid dye stain resistance of polyamides by improving resistance to detergent washings and products thereof
Inventors:
Lidia T. Calcaterra, Mathias P. Koljack
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Apr 2, 1993
Inventors
Lidia T. Calcaterra
Mathias P. Koljack
Assignee (at issue)
AlliedSignal, 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.