Granted Patent
Utility
US 4,262,145 · App. 06/102,268
Novel etherification process
Inventors:
Charles M. Selwitz, John G. McNulty
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: Dec 10, 1979
Inventors
Charles M. Selwitz
John G. McNulty
Assignee (at issue)
Gulf Research & Development Company
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.