Granted Patent
Utility
US 5,053,447 · App. 07/442,891
Polyamide-based thermoplastic formulation
Inventor:
Saadat Hussain
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Nov 29, 1989
Inventor
Saadat Hussain
Assignee (at issue)
Ethyl Corporation
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.