Granted Patent
Utility
US 5,000,825 · App. 07/533,961
Monoepoxide purification
Inventors:
T. Thomas Shih, John C. Jubin, Jr.
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Jun 6, 1990
Inventors
T. Thomas Shih
John C. Jubin, 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.