Granted Patent
Utility
US 5,470,519 · App. 08/280,744
Method of manufacturing a cellulosic article containing an olefinic oxide polymer
Inventor:
John Markulin
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Jul 26, 1994
Inventor
John Markulin
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.