Granted Patent
Utility
US 5,889,138 · App. 08/785,757
Process for making stain resistant nylon fibers from highly sulfonated nylon copolymers
Inventor:
Arthur Summers
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Jan 17, 1997
Inventor
Arthur Summers
Assignee (at issue)
Soliton, 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.