Granted Patent
Utility
US 5,433,840 · App. 08/193,016
Acid bath for the galvanic deposition of copper, and the use of such a bath
Inventors:
Wolfgang Dahms, Horst Westphal, Michael Jonat
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Apr 6, 1994
Inventors
Wolfgang Dahms
Horst Westphal
Michael Jonat
Assignee (at issue)
Atotech Deutschland GmbH
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.