Granted Patent
Utility
US 4,717,618 · App. 06/747,386
Film and blends of polyetheramide block copolymer and ethylene vinyl alcohol copolymer
Inventors:
Samuel W. Tse, George O. Schroeder
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jun 21, 1985
Inventors
Samuel W. Tse
George O. Schroeder
Assignee (at issue)
American Can 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.