Granted Patent
Utility
US 4,018,714 · App. 05/637,363
Hydrodesulfurization catalyst and process for producing the same
Inventors:
Geoffrey R. Wilson, Masami Kayamoto
Patented Case
View Patent ↗
Granted: Apr 19, 1977
Filed: Dec 3, 1975
Inventors
Geoffrey R. Wilson
Masami Kayamoto
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.