Granted Patent
Utility
US 4,368,285 · App. 06/327,852
Fast crystallizing polyethylene terephthalate containing neopentyl dibenzoate
Inventor:
Ernest A. Coleman
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Dec 7, 1981
Inventor
Ernest A. Coleman
Assignee (at issue)
Dart Industries Inc.
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.