Granted Patent
Utility
US 6,709,594 · App. 10/270,420
Method for treating waste-activated sludge using electroporation
Inventors:
Jeffrey Held, Satya P. Chauhan
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Oct 15, 2002
Inventors
Jeffrey Held
Satya P. Chauhan
Assignee (at issue)
DH20, L.L.C.
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.