IP Library Granted Patent US 3,960,767
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 3,960,767
App. No.
05/502,305
Filed
1974-09-03
Granted
1976-06-01
Kind
A