Inventor · disambiguated record
John A. Karch
Also filed as: KARCH JOHN A · SUN JUI-YUAN · YOO JIN S
21 granted patents·1 pending application·502 citations·filing 1976–2022
96Inventor score
Top patents by PatentIndex Score
22 records- 0196US4963520AMetal-containing spinel composition and process of using sameUOP INC·Filed 1988·Granted Oct 16, 1990·92 cites·40 claims
- 0294US4790982AMetal-containing spinel composition and process of using sameKATALISTIKS INT INC·Filed 1986·Granted Dec 13, 1988·101 cites·33 claims
- 0392US4957718AProcess for reducing emissions of sulfur oxides and composition useful in sameUOP INC·Filed 1987·Granted Sep 18, 1990·79 cites·15 claims
- 0488US4522937APreparative process for alkaline earth metal, aluminum-containing spinelsATLANTIC RICHFIELD CO·Filed 1984·Granted Jun 11, 1985·44 cites·21 claims
- 0581US4158548AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1978·Granted Jun 19, 1979·24 cites·18 claims
- 0677US4097244AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1976·Granted Jun 27, 1978·21 cites·33 claims
- 0776US7309679B2Attrition resistant MTO catalystUOP LLC·Filed 2005·Granted Dec 18, 2007·4 cites·10 claims
- 0874US12102986B2Catalyst for propane dehydrogenation to propyleneUOP LLC·Filed 2022·Granted Oct 1, 2024·0 cites·16 claims
- 0972US4163709ACatalyst demetallization by oxidation in a defined temperature rangeATLANTIC RICHFIELD CO·Filed 1978·Granted Aug 7, 1979·17 cites·17 claims
- 1069US4105416AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1977·Granted Aug 8, 1978·17 cites·23 claims
- 1167US4101444ACatalyst demetallization utilizing a combination of reductive and oxidative washesATLANTIC RICHFIELD CO·Filed 1976·Granted Jul 18, 1978·17 cites·16 claims
- 1265US4243550ACatalyst demetallization with a reductive SO2 washATLANTIC RICHFIELD CO·Filed 1976·Granted Jan 6, 1981·16 cites·24 claims
- 1362US4317713AIn situ aluminum passivation processATLANTIC RICHFIELD CO·Filed 1980·Granted Mar 2, 1982·16 cites·6 claims
- 1453US4224038AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1978·Granted Sep 23, 1980·10 cites·19 claims
- 1553US2022203340A1Light paraffin dehydrogenation catalysts and their application in fluidized bed dehydrogenation processesUOP LLC·Filed 2020·Application pending·0 cites
- 1651US4163710ACracking process employing a combination of reductive and oxidative washesATLANTIC RICHFIELD CO·Filed 1978·Granted Aug 7, 1979·9 cites·19 claims
- 1750US4267032ADemetallization process for a conversion catalystATLANTIC RICHFIELD CO·Filed 1979·Granted May 12, 1981·8 cites·11 claims
- 1850US4102811ACatalyst demetallization by oxidation in a defined temperature rangeATLANTIC RICHFIELD CO·Filed 1976·Granted Jul 25, 1978·7 cites·16 claims
- 1947US4234452AHigh pressure oxygen aqueous phase catalyst demetallizationATLANTIC RICHFIELD CO·Filed 1979·Granted Nov 18, 1980·7 cites·8 claims
- 2041US4197090AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1978·Granted Apr 8, 1980·6 cites·11 claims
- 2135US4293403ACatalyst demetallization by converting the metal poisons to a sulfur containing metal compound having a defined low amount of sulfurBURK JR EMMETT H·Filed 1977·Granted Oct 6, 1981·5 cites·40 claims
- 2232US4204840AProcess for removing sulfur from coalATLANTIC RICHFIELD CO·Filed 1978·Granted May 27, 1980·2 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →