Granted Patent
Utility
US 4,467,083 · App. 06/538,457
Copolyamide-imides
Inventors:
Steven J. Grossman, Kemal Onder
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Oct 3, 1983
Inventors
Steven J. Grossman
Kemal Onder
Assignee (at issue)
The Upjohn Co.
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.