Granted Patent
Utility
US 6,136,717 · App. 08/052,910
Method for producing a via hole to a doped region
Inventors:
Josef Winnerl, Walter Neumueller
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Apr 27, 1993
Inventors
Josef Winnerl
Walter Neumueller
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.