Granted Patent
Utility
US 5,538,792 · App. 08/090,787
Process for drawing heated yarns, thereby obtainable polyester fibers, and use thereof
Inventors:
Ingolf Jacob, Josef Geirhos
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Jul 12, 1993
Inventors
Ingolf Jacob
Josef Geirhos
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.