Inventor · disambiguated record
Douglas A. Nafis
Also filed as: NAFIS DOUGLAS A · NAFIS DOUGLAS ANDREW
20 granted patents·8 pending applications·56 citations·filing 2004–2018
92Inventor score
Top patents by PatentIndex Score
28 records- 0192US9914675B2Process for alkylation using ionic liquid catalystsUOP LLC·Filed 2015·Granted Mar 13, 2018·5 cites·20 claims
- 0291US9156747B2Alkylation process using phosphonium-based ionic liquidsUOP LLC·Filed 2013·Granted Oct 13, 2015·6 cites·20 claims
- 0389US9399604B2Alkylation process using phosphonium-based ionic liquidsUOP LLC·Filed 2013·Granted Jul 26, 2016·5 cites·20 claims
- 0489US9120092B1Regeneration of an acidic catalyst by silane additionUOP LLC·Filed 2014·Granted Sep 1, 2015·7 cites·20 claims
- 0586US9221043B2Regeneration of an acidic catalyst by borane additionUOP LLC·Filed 2014·Granted Dec 29, 2015·5 cites·16 claims
- 0683US9096618B1Regeneration of silyl and boryl compoundsUOP LLC·Filed 2014·Granted Aug 4, 2015·3 cites·12 claims
- 0782US9156028B2Alkylation process using phosphonium-based ionic liquidsUOP LLC·Filed 2013·Granted Oct 13, 2015·2 cites·16 claims
- 0880US7435329B1Combination reforming and isomerization processUOP LLC·Filed 2005·Granted Oct 14, 2008·9 cites·14 claims
- 0973US9434662B2Integrated fluid catalytic cracking and alkylation processUOP LLC·Filed 2014·Granted Sep 6, 2016·1 cites·16 claims
- 1066US7575668B1Conversion of kerosene to produce naphtha and isobutaneUOP LLC·Filed 2004·Granted Aug 18, 2009·11 cites·18 claims
- 1165US7875757B2Combination reforming and isomerization processUOP LLC·Filed 2008·Granted Jan 25, 2011·2 cites·1 claims
- 1261US10888857B2Ionic liquid catalyst regeneration with reduced hydrogen amountsUOP LLC·Filed 2018·Granted Jan 12, 2021·0 cites·20 claims
- 1360US2014213435A1Phosphonium-based ionic liquidsUOP LLC·Filed 2014·Application pending·0 cites
- 1458US2011060178A1Slurry column gasoline alkylation using gas phase olefin injectionNAFIS DOUGLAS A·Filed 2009·Application pending·0 cites
- 1553US2012230882A1Slurry column gasoline alkylation using gas phase olefin injectionNAFIS DOUGLAS A·Filed 2012·Application pending·0 cites
- 1651US11123721B2Trialkylphosphonium ionic liquids, methods of making, and alkylation processes using trialkylphosphonium ionic liquidsUOP LLC·Filed 2018·Granted Sep 21, 2021·0 cites·12 claims
- 1750US10369556B2Integrated process for gasoline productionUOP LLC·Filed 2014·Granted Aug 6, 2019·0 cites·14 claims
- 1850US9566578B2Hydrochloric acid stripping process for ionic liquid regeneration processUOP LLC·Filed 2014·Granted Feb 14, 2017·0 cites·20 claims
- 1950US9328036B2Hydrocarbon conversion process including catalyst regenerationUOP LLC·Filed 2014·Granted May 3, 2016·0 cites·19 claims
- 2047US10702798B2Ionic liquid waste handling systemUOP LLC·Filed 2015·Granted Jul 7, 2020·0 cites·20 claims
- 2147US9914674B2Process for alkylation using low ionic liquid volume fractionUOP LLC·Filed 2015·Granted Mar 13, 2018·0 cites·19 claims
- 2247US2014113804A1Asymmetric phosphonium haloaluminate ionic liquid compositionsUOP LLC·Filed 2013·Application pending·0 cites
- 2346US2015276692A1Process for controlling an ionic liquid process and regeneration using a viscosity measurementUOP LLC·Filed 2014·Application pending·0 cites
- 2446US2018272327A1Ionic liquid catalyst treating systemUOP LLC·Filed 2018·Application pending·0 cites
- 2545US9815049B2Selectivity of ionic liquid alkylationUOP LLC·Filed 2016·Granted Nov 14, 2017·0 cites·14 claims
- 2641US10384988B2Chloride management in ionic liquid alkylation processesUOP LLC·Filed 2016·Granted Aug 20, 2019·0 cites·20 claims
- 2739US2017348680A1Trialkylphosphonium ionic liquids, methods of making, and alkylation processes using trialkylphosphonium ionic liquidsCYTEC IND INC·Filed 2017·Application pending·0 cites
- 2836US2017113979A1Retaining circulation of ionic liquid during an emergency or process upset of ionic liquid alkylation processUOP LLC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →