Granted Patent
Utility
US 5,713,601 · App. 08/729,179
Low-flammability safety belts containing phosphorus-modified polyester fibers and use of these polyester fibers for manufacturing safety belts
Inventor:
Burkhard Bonigk
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Oct 11, 1996
Inventor
Burkhard Bonigk
Assignee (at issue)
Hoechst Trevira GmbH & Co. KG
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.