Granted Patent
Utility
US 5,378,137 · App. 08/059,686
Mask design for forming tapered inkjet nozzles
Inventors:
Stuart D. Asakawa, Paul H. McClelland, Ellen R. Tappon, Richard R. Vandepoll, Kenneth E. Trueba, Chien-Hua Chen
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: May 10, 1993
Inventors
Stuart D. Asakawa
Paul H. McClelland
Ellen R. Tappon
Richard R. Vandepoll
Kenneth E. Trueba
Chien-Hua Chen
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.