Granted Patent
Utility
US 6,727,306 · App. 10/176,737
Polymer resins having reduced frictional properties
Inventors:
Walter Lee Edwards, Robert Joseph Schiavone
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Jun 21, 2002
Inventors
Walter Lee Edwards
Robert Joseph Schiavone
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.