Granted Patent
Utility
US 4,596,716 · App. 06/502,286
Porous silicon nitride semiconductor dopant carriers
Inventors:
Gabriel P. DeMunda, Richard E. Tressler
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Jun 8, 1983
Inventors
Gabriel P. DeMunda
Richard E. Tressler
Assignee (at issue)
Kennecott Holdings Company
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.