Granted Patent
Utility
US 4,072,665 · App. 05/664,764
Polyamide from arylene diamine, isophthalic acid and alkylene dicarboxylic acid
Inventor:
Besir K. Onder
Patented Case
View Patent ↗
Granted: Feb 7, 1978
Filed: Mar 8, 1976
Inventor
Besir K. 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.