Granted Patent
Utility
US 4,279,779 · App. 06/064,700
Spheroidal alumina particles and catalysts employing the particles as a support
Inventors:
Moises G. Sanchez, Michael V. Ernest, Norman R. Laine
Patented Case
View Patent ↗
Granted: Jul 21, 1981
Filed: Aug 8, 1979
Inventors
Moises G. Sanchez
Michael V. Ernest
Norman R. Laine
Assignee (at issue)
W. R. Grace & Co.
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.