Granted Patent
Utility
US 5,189,233 · App. 07/749,346
Process for the production of cyclohexane by liquid phase hydrogenation of benzene
Inventors:
John M. Larkin, James H. Templeton, Donald H. Champion
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Aug 23, 1991
Inventors
John M. Larkin
James H. Templeton
Donald H. Champion
Assignee (at issue)
Texaco Chemical 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.