Granted Patent
Utility
US 5,928,740 · App. 08/808,093
Thermoplastic C.sub.2 -.alpha.-olefin copolymer blends and films
Inventors:
Darrel L. Wilhoit, Paul N. Georgelos
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Feb 28, 1997
Inventors
Darrel L. Wilhoit
Paul N. Georgelos
Assignee (at issue)
Viskase Companies, Inc.
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.