Granted Patent
Utility
US 5,998,271 · App. 08/983,239
Method of producing an MOS transistor
Inventor:
Udo Schwalke
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Jan 12, 1998
Inventor
Udo Schwalke
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.