Granted Patent
Utility
US 4,773,973 · App. 07/165,492
Process for the production of polycrystalline silicon coatings by electrolytic deposition of silicon
Inventors:
Hans R. Gruniger, Rudolf Kern, Paul Rys
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Mar 8, 1988
Inventors
Hans R. Gruniger
Rudolf Kern
Paul Rys
Assignee (at issue)
Ciba-Geigy
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.