Granted Patent
Utility
US 5,589,530 · App. 08/308,722
Stabilization of low molecular weight polybutylene terephthalate/polyester blends with phosphorus compounds
Inventor:
Eileen B. Walsh
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Sep 19, 1994
Inventor
Eileen B. Walsh
Assignee (at issue)
General Electric Company
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.