Inventor · disambiguated record
Frances I. Ratka
Also filed as: RATKA FRANCES I
4 granted patents·26 citations·filing 1979–1990
73Inventor score
Files withSTANDARD OIL CO OHIO4
Top patents by PatentIndex Score
4 records- 0157US4532083AMultiply promoted Sn/Sb oxide catalystsSTANDARD OIL CO OHIO·Filed 1982·Granted Jul 30, 1985·5 cites·18 claims
- 0255US4339394AProcess of ammoxidation of olefins in the presence of multiply promoted Sn-Sb oxide catalystsSTANDARD OIL CO OHIO·Filed 1980·Granted Jul 13, 1982·9 cites·3 claims
- 0351US4316855AMultiply promoted Sn-Sb oxide catalystsSTANDARD OIL CO OHIO·Filed 1979·Granted Feb 23, 1982·9 cites·2 claims
- 0436US4960921AMultiply promoted MN-SB oxide catalystsSTANDARD OIL CO OHIO·Filed 1990·Granted Oct 2, 1990·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →