Granted Patent
Utility
US 5,840,648 · App. 08/923,878
Catalyst for the manufacture of acrylonitrile and hydrogen cyanide
Inventors:
Dev D. Suresh, Christos Paparizos, Michael J. Seely, Maria S. Friedrich, Tama Lee Drenski
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Sep 2, 1997
Inventors
Dev D. Suresh
Christos Paparizos
Michael J. Seely
Maria S. Friedrich
Tama Lee Drenski
Assignee (at issue)
The Standard Oil 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.