Granted Patent
Utility
US 4,609,478 · App. 06/581,679
Sulfonated alkyl glucosides and use thereof in oil recovery
Inventor:
Philip A. Egan
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Feb 21, 1984
Inventor
Philip A. Egan
Assignee (at issue)
Olin 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.