Granted Patent
Utility
US 5,446,079 · App. 08/163,441
Aliphatic-aromatic copolyesters and cellulose ester/polymer blends
Inventors:
Charles Michael Buchanan, Robert M. Gardner, Alan W. White
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Dec 7, 1993
Inventors
Charles Michael Buchanan
Robert M. Gardner
Alan W. White
Assignee (at issue)
Eastman Chemical 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.