Granted Patent
Utility
US 6,218,007 · App. 09/313,919
Method of producing high quality dark dyeing polyester and resulting yarns and fabrics
Inventors:
David Michael Russell, Winston Patrick Moore, Robert Alton Usher, Jr.
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: May 18, 1999
Inventors
David Michael Russell
Winston Patrick Moore
Robert Alton Usher, Jr.
Assignee (at issue)
Wellman 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.