Granted Patent
Utility
US 6,530,965 · App. 09/842,839
Method of converting heavy oil residuum to a useful fuel
Inventor:
Edward Warchol
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Apr 27, 2001
Inventor
Edward Warchol
Assignee (at issue)
Colt Engineering Corporation
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.