Granted Patent
Utility
US 6,673,229 · App. 09/898,607
Electrochemical apparatus and process for purification of fluids
Inventors:
William Ford, Jurina Wessels, Tobias Vossmeyer
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 3, 2001
Inventors
William Ford
Jurina Wessels
Tobias Vossmeyer
Assignee (at issue)
Sony International (Europe) 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.