Granted Patent
Utility
US 5,004,479 · App. 06/872,371
Methanol as cosurfactant for microemulsions
Inventors:
Steven G. Schon, Edward A. Hazbun
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Jun 9, 1986
Inventors
Steven G. Schon
Edward A. Hazbun
Assignee (at issue)
Arco Chemical Technology, L.P.
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.