Granted Patent
Utility
US 4,996,374 · App. 07/451,672
Hydrogenation of acetophenone
Inventors:
Shaw-Chan Lin, Robert N. Cochran
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Dec 15, 1989
Inventors
Shaw-Chan Lin
Robert N. Cochran
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.