Granted Patent
Utility
US 4,129,715 · App. 05/869,705
Polyester amides suitable for injection molding
Inventors:
Augustin T. Chen, William J. Farrissey, Jr., Robert G. Nelb, II
Patented Case
View Patent ↗
Granted: Dec 12, 1978
Filed: Jan 16, 1978
Inventors
Augustin T. Chen
William J. Farrissey, Jr.
Robert G. Nelb, II
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.