Granted Patent
Utility
US 4,239,651 · App. 05/935,628
Cracking catalyst and method of producing the same
Inventors:
Hamid Alafandi, Dennis Stamires
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Aug 21, 1978
Inventors
Hamid Alafandi
Dennis Stamires
Assignee (at issue)
Filtrol 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.