Granted Patent
Utility
US 5,504,063 · App. 08/272,550
Asphaltene removal composition and method
Inventors:
Harold L. Becker, Bernhard Wolf
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Jul 11, 1994
Inventors
Harold L. Becker
Bernhard Wolf
Assignee (at issue)
Petrolite 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.