Granted Patent
Utility
US 5,143,592 · App. 07/531,602
Process for preparing nonconductive substrates
Inventor:
Salvador Toro
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Jun 1, 1990
Inventor
Salvador Toro
Assignee (at issue)
Olin Corporation
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.