Granted Patent
Utility
US 3,960,767 · App. 05/502,305
Modified zinc ferrite oxidative dehydrogenation catalysts
Inventors:
Harold F. Christmann, Edward J. Miklas
Patented Case
View Patent ↗
Granted: Jun 1, 1976
Filed: Sep 3, 1974
Inventors
Harold F. Christmann
Edward J. Miklas
Assignee (at issue)
Petro-Tex 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.