Granted Patent
Utility
US 4,919,972 · App. 07/225,448
Process for surface modification of polymer articles
Inventors:
Neal D. Conrad, Michael T. Burchill, Joseph Silbermann, Thomas Hoffman, Maurice Bourrel
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Jul 28, 1988
Inventors
Neal D. Conrad
Michael T. Burchill
Joseph Silbermann
Thomas Hoffman
Maurice Bourrel
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.