Granted Patent
Utility
US 4,983,448 · App. 07/203,659
Polyamide filaments having improved properties and method of preparation
Inventor:
Theodore G. Karageorgiou
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jun 7, 1988
Inventor
Theodore G. Karageorgiou
Assignee (at issue)
BASF SE
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.