Granted Patent
Utility
US 5,153,039 · App. 07/804,492
High density polyethylene article with oxygen barrier properties
Inventors:
Jay P. Porter, William D. Ray
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Dec 9, 1991
Inventors
Jay P. Porter
William D. Ray
Assignee (at issue)
Paxon Polymer Company, L.P.
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.