Granted Patent
Utility
US 6,197,837 · App. 09/263,641
Method for fluidizing tars
Inventors:
Philip Hill, Thomas Edwin Pruitt, Forrest Lee Sanders, Gilles Guerin, Bruno Langlois
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Mar 5, 1999
Inventors
Philip Hill
Thomas Edwin Pruitt
Forrest Lee Sanders
Gilles Guerin
Bruno Langlois
Assignee (at issue)
Rhodia, Inc.
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.