Granted Patent
Utility
US 4,116,818 · App. 05/811,135
Multi-reactor hydrodesulfurization process
Inventors:
James A. Frayer, Henri K. Lese, Joel D. McKinney, Kirk J. Metzger, John A. Paraskos
Patented Case
View Patent ↗
Granted: Sep 26, 1978
Filed: Jun 28, 1977
Inventors
James A. Frayer
Henri K. Lese
Joel D. McKinney
Kirk J. Metzger
John A. Paraskos
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.