Granted Patent
Utility
US 4,770,905 · App. 06/945,595
Process for surface modification of polymer articles
Inventors:
Joseph Silbermann, Michael T. Burchill
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Dec 23, 1986
Inventors
Joseph Silbermann
Michael T. Burchill
Assignee (at issue)
M&T Chemicals, 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.