Granted Patent
Utility
US 5,262,579 · App. 07/991,918
Separation of sulfolane from conjunct polymeric byproducts
Inventors:
Jonathan E. Child, Anagha A. Gupte, Tomas R. Melli, Sergei Yurchak
Patented Case
View Patent ↗
Granted: Nov 16, 1993
Filed: Dec 17, 1992
Inventors
Jonathan E. Child
Anagha A. Gupte
Tomas R. Melli
Sergei Yurchak
Assignee (at issue)
Mobil Oil 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.