Granted Patent
Utility
US 5,453,321 · App. 08/053,058
High molecular weight copolyesters for high modulus fibers
Inventors:
Eui W. Choe, John A. Flint
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Apr 26, 1993
Inventors
Eui W. Choe
John A. Flint
Assignee (at issue)
Hoechst Celanese Corporation
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.