Granted Patent
Utility
US 4,980,568 · App. 07/355,443
Optical isolator having high voltage isolation and high light flux light guide
Inventors:
Stephen P. Merrick, Joseph Pernyeszi
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: May 22, 1989
Inventors
Stephen P. Merrick
Joseph Pernyeszi
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.