Granted Patent
Utility
US 5,212,137 · App. 07/736,864
Catalyst for the manufacture of acrylonitrile and methacrylonitrile
Inventors:
Dev D. Suresh, Maria S. Friedrich, Michael J. Seely
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Jul 29, 1991
Inventors
Dev D. Suresh
Maria S. Friedrich
Michael J. Seely
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.