Granted Patent
Utility
US 5,296,037 · App. 07/901,764
Plasma CVD system comprising plural upper electrodes
Inventors:
Nobuyoshi Sato, Kojiro Sugane
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Jun 17, 1992
Inventors
Nobuyoshi Sato
Kojiro Sugane
Assignee (at issue)
Kawasaki Steel 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.