Granted Patent
Utility
US 4,455,446 · App. 06/298,702
Method of removal of COS from propylene
Inventors:
George L. Brownell, Melba Collier, William E. Hall, Howard H. Morgan, Jr., Arthur R. Snyder
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Sep 1, 1981
Inventors
George L. Brownell
Melba Collier
William E. Hall
Howard H. Morgan, Jr.
Arthur R. Snyder
Assignee (at issue)
United States Steel 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.