Granted Patent
Utility
US 5,484,488 · App. 08/223,919
Methods for melting and dispersing paraffin wax in oil field production equipment
Inventors:
Paul R. Hart, J. Michael Brown
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Apr 6, 1994
Inventors
Paul R. Hart
J. Michael Brown
Assignee (at issue)
BJ Services Company, U.S.A.
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.