Granted Patent
Utility
US 5,420,045 · App. 08/122,413
Process for manufacturing thyristor with adjustable breakover voltage
Inventors:
Hans-Joachim Schulze, Heinz Mitlehner, Frank Pfirsch
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Sep 27, 1993
Inventors
Hans-Joachim Schulze
Heinz Mitlehner
Frank Pfirsch
Assignee (at issue)
Siemens Aktiengesellschaft
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.