Granted Patent
Utility
US 4,495,321 · App. 06/562,680
Polyimide and/or polyamide-imide compositions in mixed solvents
Inventor:
Mary T. Arnold
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Dec 19, 1983
Inventor
Mary T. Arnold
Assignee (at issue)
Atlantic Richfield Company
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.