FR

Frances I. Ratka

TO The Standard Oil: 4 patents #108 of 601Top 20%
📍 Cleveland Heights, OH: #172 of 614 inventorsTop 30%
🗺 Ohio: #18,857 of 73,341 inventorsTop 30%
Overall (All Time): #1,302,052 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4960921 Multiply promoted MN-SB oxide catalysts Dev. D. Suresh, Robert K. Grasselli, James F. Brazdil 1990-10-02
4532083 Multiply promoted Sn/Sb oxide catalysts Dev D. Suresh, Robert K. Grasselli, James F. Brazdil 1985-07-30
4339394 Process of ammoxidation of olefins in the presence of multiply promoted Sn-Sb oxide catalysts Robert K. Grasselli, Dev D. Suresh, James F. Brazdil 1982-07-13
4316855 Multiply promoted Sn-Sb oxide catalysts Robert K. Grasselli, Dev D. Suresh, James F. Brazdil 1982-02-23