Granted Patent
Utility
US 5,010,355 · App. 07/456,431
Ink jet printhead having ionic passivation of electrical circuitry
Inventors:
William G. Hawkins, Cathie J. Burke, Daniel O. Roll, Pamela J. Hartman, Diane Atkinson
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Dec 26, 1989
Inventors
William G. Hawkins
Cathie J. Burke
Daniel O. Roll
Pamela J. Hartman
Diane Atkinson
Assignee (at issue)
Xerox 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.