Granted Patent
Utility
US 4,009,009 · App. 05/572,427
Process for reducing the COS content of gaseous hydrocarbon streams by use of supported lead oxide
Inventors:
Franklin E. Massoth, John E. Young
Patented Case
View Patent ↗
Granted: Feb 22, 1977
Filed: Apr 28, 1975
Inventors
Franklin E. Massoth
John E. Young
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.