Granted Patent
Utility
US 4,142,995 · App. 05/769,118
Method of producing zeolitic catalysts with silica alumina matrix
Inventors:
Hamid Alafandi, Dennis Stamires
Patented Case
View Patent ↗
Granted: Mar 6, 1979
Filed: Feb 16, 1977
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.