Inventor · disambiguated record
Nabil Rizkalla
Also filed as: RIZKALLA NABIL · RIZKALLA NABIL M
64 granted patents·2 pending applications·947 citations·filing 1975–2017
99Inventor score
Files withSCIENT DESIGN CO26HALCON SD GROUP INC19HALCON INTERNATIONAL INC6HALCON RES & DEV4RIZKALLA NABIL4
Top patents by PatentIndex Score
66 records- 0197US5138093AProcess for preparing ethylidene diacetateEASTMAN KODAK CO·Filed 1976·Granted Aug 11, 1992·77 cites·12 claims
- 0296US7763096B2Recovery of rheniumSD LIZENZVERWERTUNGSGESELL MBH·Filed 2008·Granted Jul 27, 2010·16 cites·22 claims
- 0394US4115444AProcess for preparing carboxylic acid anhydridesHALCON INTERNATIONAL INC·Filed 1976·Granted Sep 19, 1978·63 cites·26 claims
- 0493US7553980B2Process for initiating a highly selective ethylene oxide catalystSD LIZENZVERWERTUNGSGESELL MBH·Filed 2007·Granted Jun 30, 2009·26 cites·14 claims
- 0593US5504052ASilver catalyst preparationSCIENT DESIGN CO·Filed 1994·Granted Apr 2, 1996·89 cites·3 claims
- 0691US5646087APromoted silver acatalyst preparationSCIENT DESIGN CO·Filed 1996·Granted Jul 8, 1997·74 cites·6 claims
- 0790US4002678APreparation of carboxylic acid anhydridesHALCON INTERNATIONAL INC·Filed 1975·Granted Jan 11, 1977·25 cites·6 claims
- 0889US6750173B2Ethylene oxide catalystSCIENT DESIGN CO·Filed 2002·Granted Jun 15, 2004·83 cites·7 claims
- 0988US6762311B2Ethylene oxide catalystSCIENT DESIGN CO LTD·Filed 2001·Granted Jul 13, 2004·32 cites·6 claims
- 1087US8791280B2Process for preparation of catalyst carrier and its use in catalyst preparationRIZKALLA NABIL·Filed 2005·Granted Jul 29, 2014·11 cites·21 claims
- 1186US5374748AProcess for preparing silver catalyst for ethylene epoxidationSCIENT DESIGN CO·Filed 1994·Granted Dec 20, 1994·44 cites·15 claims
- 1285US10669247B2Carrier treatment to improve catalytic performance of an ethylene oxide catalystSCIENT DESIGN CO·Filed 2017·Granted Jun 2, 2020·1 cites·17 claims
- 1385US6939979B2Oxidation process and catalystSCIENT DESIGN CO·Filed 2003·Granted Sep 6, 2005·14 cites·3 claims
- 1483US8318627B2Process for preparation of a catalyst carrierRIZKALLA NABIL·Filed 2005·Granted Nov 27, 2012·3 cites·14 claims
- 1583US7803957B2Ethylene oxide production using fixed moderator concentrationSD LIZENZVERWERTUNGSGESELL MBH·Filed 2007·Granted Sep 28, 2010·4 cites·16 claims
- 1683US4002677AProcess for preparing carboxylic acid anhydridesHALCON INTERNATIONAL INC·Filed 1975·Granted Jan 11, 1977·15 cites·4 claims
- 1782US8883675B2Method for making a highly selective ethylene oxide catalystRIZKALLA NABIL·Filed 2011·Granted Nov 11, 2014·3 cites·9 claims
- 1881US5854167AEthylene oxide catalystSCIENT DESIGN CO·Filed 1997·Granted Dec 29, 1998·25 cites·5 claims
- 1979US4134912AProcess for preparing carboxylic acidsHALCON INTERNATIONAL INC·Filed 1976·Granted Jan 16, 1979·12 cites·4 claims
- 2078US5691269AProcess for preparing silver catalystSCIENT DESIGN CO·Filed 1995·Granted Nov 25, 1997·18 cites·12 claims
- 2177US5525740AProcess for preparing silver catalyst and process of using same to produce ethylene oxideSCIENT DESIGN CO·Filed 1993·Granted Jun 11, 1996·14 cites·24 claims
- 2274US6846774B2Ethylene oxide catalystSCIENT DESIGN CO·Filed 2003·Granted Jan 25, 2005·11 cites·4 claims
- 2374US4659518APreparation of carboxylic acidsHALCON SD GROUP INC·Filed 1980·Granted Apr 21, 1987·10 cites·2 claims
- 2474US4483803APreparation of carboxylic acid anhydridesHALCON SD GROUP INC·Filed 1982·Granted Nov 20, 1984·22 cites·4 claims
- 2574US4323697AProcess for preparing ethylidene diacetateHALCON SD GROUP INC·Filed 1980·Granted Apr 6, 1982·10 cites·4 claims
- 2672US4482497APreparation of carboxylic acidsHALCON SD GROUP INC·Filed 1982·Granted Nov 13, 1984·9 cites·4 claims
- 2771US4356320APreparation of carboxylic acidsHALCON SD GROUP INC·Filed 1977·Granted Oct 26, 1982·8 cites·5 claims
- 2869US8487123B2Process for initiating a highly selective ethylene oxide catalystRIZKALLA NABIL·Filed 2010·Granted Jul 16, 2013·1 cites·11 claims
- 2968US6858560B2Ethylene oxide catalystSCIENT DESIGN CO·Filed 2003·Granted Feb 22, 2005·7 cites·4 claims
- 3067US5780656AEthylene oxide catalyst and processSCIENT DESIGN CO·Filed 1997·Granted Jul 14, 1998·35 cites·6 claims
- 3167US4115419AProcess for converting thallium (i) to thallium (iii)HALCON INTERNATIONAL INC·Filed 1977·Granted Sep 19, 1978·6 cites·10 claims
- 3266US4551560AThermally-induced hydrolysis of acetalHALCON SD GROUP INC·Filed 1984·Granted Nov 5, 1985·7 cites·11 claims
- 3365US9095843B2Carrier treatment to improve catalytic performance of an ethylene oxide catalystSCIENT DESIGN CO·Filed 2014·Granted Aug 4, 2015·0 cites·16 claims
- 3463US9758498B2Carrier treatment to improve catalytic performance of an ethylene oxide catalystSCIENT DESIGN CO·Filed 2015·Granted Sep 12, 2017·0 cites·21 claims
- 3563US5444034AProcess for preparing silver and alkali catalystSCIENT DESIGN CO·Filed 1995·Granted Aug 22, 1995·18 cites·13 claims
- 3662US9427729B2Silver-based ethylene oxide catalyst having reduced sodium contentSCIENT DESIGN CO·Filed 2014·Granted Aug 30, 2016·0 cites·33 claims
- 3760US5958824AEthylene oxide catalystSCIENT DESIGN CO·Filed 1997·Granted Sep 28, 1999·21 cites·11 claims
- 3860US2015057150A1Method for making a highly selective ethylene oxide catalystSCIENT DESIGN CO·Filed 2014·Application pending·0 cites
- 3958US9452419B2Carrier for ethylene oxide catalystsSCIENT DESIGN CO·Filed 2014·Granted Sep 27, 2016·0 cites·43 claims
- 4058US5736483ANiobium or tantalum promoted silver catalystSCIENT DESIGN CO·Filed 1996·Granted Apr 7, 1998·18 cites·4 claims
- 4157US4335059APreparation of carboxylic acid anhydridesHALCON RES & DEV·Filed 1980·Granted Jun 15, 1982·12 cites·4 claims
- 4257US2013006002A1Process for preparation of a catalyst carrierSD LIZENZVERWERTUNGSGESELL MBH·Filed 2012·Application pending·0 cites
- 4356US5905053AEthylene oxide catalystSCIENT DESIGN CO·Filed 1997·Granted May 18, 1999·18 cites·6 claims
- 4455US10040773B2Silver catalysts with improved size and distribution density of silver particlesSCIENT DESIGN CO·Filed 2016·Granted Aug 7, 2018·0 cites·15 claims
- 4553US6184175B1Process for preparing silver catalystSCIENT DESIGN CO·Filed 1994·Granted Feb 6, 2001·10 cites·16 claims
- 4653US4792420APurification of carboxylic acid anhydridesEASTMAN KODAK CO·Filed 1985·Granted Dec 20, 1988·4 cites·2 claims
- 4753US4625055APreparation of carboxylic acidsHALCON SD GROUP INC·Filed 1985·Granted Nov 25, 1986·4 cites·4 claims
- 4848US4271090ANovel 2-bromoethyl tellurium bromidesHALCON RES & DEV·Filed 1979·Granted Jun 2, 1981·2 cites·7 claims
- 4947US5703001APromoted silver catalystSCIENT DESIGN CO·Filed 1996·Granted Dec 30, 1997·10 cites·7 claims
- 5047US4650615APurification of carboxylic acid anhydrides contaminated with halogen or halidesHALCON SD GROUP INC·Filed 1985·Granted Mar 17, 1987·6 cites·2 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →