Granted Patent
Utility
US 4,677,150 · App. 06/816,483
Modified polyester compositions
Inventors:
Varkki Chacko, Paul DeStio, Gerald A. Baum
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Jan 10, 1986
Inventors
Varkki Chacko
Paul DeStio
Gerald A. Baum
Assignee (at issue)
Celanese Engineering Resins, 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.