Granted Patent
Utility
US 4,520,067 · App. 06/516,863
Composition useful for making circuit board substrates and electrical connectors
Inventors:
James E. Harris, Lloyd M. Robeson
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Jul 25, 1983
Inventors
James E. Harris
Lloyd M. Robeson
Assignee (at issue)
Union Carbide 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.