Granted Patent
Utility
US 6,035,701 · App. 09/060,952
Method and system to locate leaks in subsurface containment structures using tracer gases
Inventors:
William E. Lowry, Sandra Dalvit Dunn, Robert W. Walsh, Daniel Merewether, Desario V. Rao
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Apr 15, 1998
Inventors
William E. Lowry
Sandra Dalvit Dunn
Robert W. Walsh
Daniel Merewether
Desario V. Rao
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.