Granted Patent
Utility
US 4,980,326 · App. 07/201,663
Crystalline aluminosilicate compositions, the preparation thereof and their use in the conversion of synthesis gas to low molecular weight hydrocarbons
Inventor:
James A. Hinnenkamp
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Jun 2, 1988
Inventor
James A. Hinnenkamp
Assignee (at issue)
Quantum Chemical 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.