Granted Patent
Utility
US 4,371,583 · App. 06/260,180
Modified ionomer blend and laminated article
Inventor:
Wayne Nelson
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: May 4, 1981
Inventor
Wayne Nelson
Assignee (at issue)
A. Schulman, 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.