Granted Patent
Utility
US 6,066,304 · App. 09/130,340
Process for removing sulfur dioxide out of a gas
Inventors:
Mark Freetly, John M. Heeney
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Aug 6, 1998
Inventors
Mark Freetly
John M. Heeney
Assignee (at issue)
Delores Pircon
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.