Granted Patent
Utility
US 4,458,097 · App. 06/373,728
Conversion of certain hydrocarbons using divalent-copper-containing ZSM-5 type catalyst
Inventors:
Daniel C. Garska, James S. Ritscher
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Apr 30, 1982
Inventors
Daniel C. Garska
James S. Ritscher
Assignee (at issue)
Union Carbide Corporation
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.