Granted Patent
Utility
US 4,855,397 · App. 07/272,379
Polyesteramide from amino alcohol with improved gas barrier properties
Inventors:
Robert B. Barbee, Larry A. Minnick
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Nov 17, 1988
Inventors
Robert B. Barbee
Larry A. Minnick
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.