Granted Patent
Utility
US 6,706,396 · App. 10/273,835
Processes for producing very low IV polyester resin
Inventors:
Richard Allen Hayes, Gregory Hoffmann
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Oct 18, 2002
Inventors
Richard Allen Hayes
Gregory Hoffmann
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.