Granted Patent
Utility
US 4,829,655 · App. 07/029,661
Catalyst support and method for making same
Inventors:
Richard C. Cornelison, William B. Retallick
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Mar 24, 1987
Inventors
Richard C. Cornelison
William B. Retallick
Assignee (at issue)
W.R. Grace & Co. Conn.
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.