Granted Patent
Utility
US 4,574,148 · App. 06/747,608
Polyester resins capable of forming containers having improved gas barrier properties
Inventors:
Thomas H. Wicker, Jr., Robert B. Barbee
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Jun 21, 1985
Inventors
Thomas H. Wicker, Jr.
Robert B. Barbee
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.