Granted Patent
Utility
US 6,680,018 · App. 10/134,904
Melt extrusion spinning polyamide fibers with sulfonated reagent and thermoplastic carrier
Inventor:
Matthew Studholme
Patented Case
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Granted: Jan 20, 2004
Filed: Apr 30, 2002
Inventor
Matthew Studholme
Assignee (at issue)
Prisma Fibers, 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.