Granted Patent
Utility
US 6,562,906 · App. 09/924,194
Bi-modal ionomers
Inventor:
John Chu Chen
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Aug 8, 2001
Inventor
John Chu Chen
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.