Granted Patent
Utility
US 6,672,047 · App. 09/795,933
Processes of preparing partially oriented and draw textured poly(trimethylene terephthalate) yarns
Inventors:
James M. Howell, Joe Forrest London, Jr., Michelle Watkins
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Feb 28, 2001
Inventors
James M. Howell
Joe Forrest London, Jr.
Michelle Watkins
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.