Granted Patent
Utility
US 4,925,541 · App. 06/908,913
Electodeionization apparatus and method
Inventors:
Anthony J. Giuffrida, Anil D. Jha, Gary C. Ganzi
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Sep 18, 1986
Inventors
Anthony J. Giuffrida
Anil D. Jha
Gary C. Ganzi
Assignee (at issue)
Millipore Corporation
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.