Granted Patent
Utility
US 6,322,621 · App. 09/317,669
Chemical method of liquefaction and dispersion of paraffin waxes, asphaltenes and coke derived from various sources
Inventor:
Gordon K. Goldman
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: May 24, 1999
Inventor
Gordon K. Goldman
Assignee (at issue)
Nuritchem, LLC (LA)
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.