Granted Patent
Utility
US 5,627,427 · App. 08/464,532
Silicon tip field emission cathodes
Inventors:
John H. Das, Noel C. MacDonald, James W. Mayer, James Spallas
Patented Case
View Patent ↗
Granted: May 6, 1997
Filed: Jun 5, 1995
Inventors
John H. Das
Noel C. MacDonald
James W. Mayer
James Spallas
Assignee (at issue)
Cornell Research Foundation, Inc.
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.