Granted Patent
Utility
US 4,401,805 · App. 06/353,715
Modified poly(ethylene terephthalate) having improved gas barrier properties
Inventors:
Doyle A. Weemes, Robert W. Seymour, Thomas H. Wicker, Jr.
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Mar 1, 1982
Inventors
Doyle A. Weemes
Robert W. Seymour
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.