Granted Patent
Utility
US 4,540,416 · App. 06/687,408
Heat-sterilizable polyolefin compositions and articles manufactured therefrom
Inventors:
Kiyoshi Hattori, John H. Myers
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Dec 28, 1984
Inventors
Kiyoshi Hattori
John H. Myers
Assignee (at issue)
El Paso Polyolefins 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.