Granted Patent
Utility
US 4,426,512 · App. 06/502,781
Polyester containers having improved gas barrier properties
Inventors:
Robert B. Barbee, Thomas H. Wicker, Jr.
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Jun 9, 1983
Inventors
Robert B. Barbee
Thomas H. Wicker, Jr.
Assignee (at issue)
EASTMAN KODAK 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.