Granted Patent
Utility
US 6,221,486 · App. 09/458,220
Expandable polymeric fibers and their method of production
Inventors:
David S. Soane, Michael R. Houston
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Dec 9, 1999
Inventors
David S. Soane
Michael R. Houston
Assignee (at issue)
ZMS, LLC.
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.