Granted Patent
Utility
US 6,402,931 · App. 09/080,264
Electrochemical machining using modulated reverse electric fields
Inventors:
Chengdong Zhou, E. Jennings Taylor, Jenny J. Sun, Lawrence E. Gebhart, Robert Phillip Renz
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: May 18, 1998
Inventors
Chengdong Zhou
E. Jennings Taylor
Jenny J. Sun
Lawrence E. Gebhart
Robert Phillip Renz
Assignee (at issue)
Faraday Technology Marketing Group, LLC
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.