Granted Patent
Utility
US 4,891,405 · App. 07/239,473
Moldable styrene-maleic anhydride/polybutylene terephthalate composition
Inventor:
Russell J. McCready
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Sep 1, 1988
Inventor
Russell J. McCready
Assignee (at issue)
Arco Chemical Technology, L.P.
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.