Granted Patent
Utility
US 4,243,619 · App. 06/012,795
Process for making film from low density ethylene hydrocarbon copolymer
Inventors:
William A. Fraser, Gary S. Cieloszyk
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Feb 16, 1979
Inventors
William A. Fraser
Gary S. Cieloszyk
Assignee (at issue)
Union Carbide Corporation
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.