Granted Patent
Utility
US 4,891,437 · App. 07/133,664
Olefin epoxidation of olefins in a polar medium
Inventors:
Edward T. Marquis, Kenneth P. Keating, John F. Knifton, William A. Smith, John R. Sanderson, Jonathan Lustri
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Dec 16, 1987
Inventors
Edward T. Marquis
Kenneth P. Keating
John F. Knifton
William A. Smith
John R. Sanderson
Jonathan Lustri
Assignee (at issue)
Texaco Inc.
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.