Granted Patent
Utility
US 4,581,264 · App. 06/595,273
Process for extruding an article from an amide-imide copolymer and the resultant article
Inventors:
Donald B. Emery, Brian Connolly
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Mar 30, 1984
Inventors
Donald B. Emery
Brian Connolly
Assignee (at issue)
Standard Oil Company (Indiana)
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.