Granted Patent
Utility
US 6,331,251 · App. 09/329,538
System and method for withdrawing permeate through a filter and for cleaning the filter in situ
Inventors:
Michael Arthur Del Vecchio, Robert Loudon, Paul Matthew Sutton
Patented Case
View Patent ↗
Granted: Dec 18, 2001
Filed: Jun 10, 1999
Inventors
Michael Arthur Del Vecchio
Robert Loudon
Paul Matthew Sutton
Assignee (at issue)
Envirogen, Inc.
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.