Granted Patent
Utility
US 4,083,807 · App. 05/648,799
Method for preparing crystalline aluminosilicate cracking catalysts
Inventors:
Joel D. McKinney, Bruce R. Mitchell, Raynor T. Sebulsky
Patented Case
View Patent ↗
Granted: Apr 11, 1978
Filed: Jan 13, 1976
Inventors
Joel D. McKinney
Bruce R. Mitchell
Raynor T. Sebulsky
Assignee (at issue)
Gulf Research & Development Company
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.