Granted Patent
Utility
US 4,855,258 · App. 07/111,377
Native oxide reduction for sealing nitride deposition
Inventors:
Derryl D. J. Allman, Steven S. Lee
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Oct 22, 1987
Inventors
Derryl D. J. Allman
Steven S. Lee
Assignee (at issue)
NCR 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.