Granted Patent
Utility
US 5,118,822 · App. 07/767,594
Olefin epoxidation using a perrhenate catalyst and an organic hydroperoxide
Inventors:
Wilfred P. Shum, Haven S. Kesling, Jr.
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Sep 30, 1991
Inventors
Wilfred P. Shum
Haven S. Kesling, Jr.
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.