Granted Patent
Utility
US 4,623,906 · App. 06/793,378
Stable surface coating for ink jet nozzles
Inventors:
G. V. Chandrashekhar, Merrill W. Shafer
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Oct 31, 1985
Inventors
G. V. Chandrashekhar
Merrill W. Shafer
Assignee (at issue)
International Business Machines 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.