Granted Patent
Utility
US 5,750,221 · App. 08/824,340
Abrasion-resistant fluoropolymer mixtures
Inventors:
Helmut Scheckenbach, Andreas Schleicher, Jurgen Kulpe, Wolfgang Neumann, Bernd Jansen
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: Mar 26, 1997
Inventors
Helmut Scheckenbach
Andreas Schleicher
Jurgen Kulpe
Wolfgang Neumann
Bernd Jansen
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.