Granted Patent
Utility
US 4,880,866 · App. 07/063,731
Thermoplastic polyester compositions containing certain low molecular weight diepoxide resins and having improved impact behavior
Inventors:
Donal McNally, H. Leslie LaNieve, Jerome L. Costanzo
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Jun 17, 1987
Inventors
Donal McNally
H. Leslie LaNieve
Jerome L. Costanzo
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.