Granted Patent
Utility
US 5,817,504 · App. 08/742,849
Method and apparatus for accelerated decomposition of petroleum and petro-chemical based compounds within filter media
Inventors:
William M. Lasky, James H. Cornwell
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Nov 1, 1996
Inventors
William M. Lasky
James H. Cornwell
Assignee (at issue)
DANA LIMITED
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.