Granted Patent
Utility
US 5,153,250 · App. 07/718,202
Fiber-filled polyphthalamide composition
Inventor:
David P. Sinclair
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Jun 20, 1991
Inventor
David P. Sinclair
Assignee (at issue)
Amoco 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.