Granted Patent
Utility
US 6,608,136 · App. 09/620,149
Polyphenylene sulfide alloy composition
Inventors:
David M. Dean, Richard Arhart
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jul 20, 2000
Inventors
David M. Dean
Richard Arhart
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.