Granted Patent
Utility
US 4,301,037 · App. 06/136,222
Extruded alumina catalyst support having controlled distribution of pore sizes
Inventors:
Moises G. Sanchez, Jose E. Herrera
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Apr 1, 1980
Inventors
Moises G. Sanchez
Jose E. Herrera
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.