Granted Patent
Utility
US 5,342,677 · App. 08/068,055
Composites with polyether ketone yarn
Inventor:
Andre Rotgers
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: May 27, 1993
Inventor
Andre Rotgers
Assignee (at issue)
Hoechst GmbH
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.