Inventor · disambiguated record
Main Chang
Also filed as: CHANG MAIN
46 granted patents·4 pending applications·2,803 citations·filing 1987–2017
99Inventor score
Files withEXXON CHEMICAL PATENTS INC20CHANG MAIN7BASF CORP5BASF CATALYSTS LLC4EXXONMOBIL CHEM PATENTS INC4
Top patents by PatentIndex Score
50 records- 0199US4937301AMethod for preparing a supported metallocene-alumoxane catalyst for gas phase polymerizationEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jun 26, 1990·326 cites·20 claims
- 0298US8227370B2High activity catalyst component for olefin polymerization and method of using the sameCHANG MAIN·Filed 2010·Granted Jul 24, 2012·36 cites·23 claims
- 0398US5238892ASupported catalyst for 1-olefin(s) (co)polymerizationEXXON CHEMICAL PATENTS INC·Filed 1992·Granted Aug 24, 1993·213 cites·19 claims
- 0498US5008228AMethod for preparing a silica gel supported metallocene-alumoxane catalystEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Apr 16, 1991·224 cites·10 claims
- 0598US4937217AMethod for utilizing triethylaluminum to prepare an alumoxane support for an active metallocene catalystEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jun 26, 1990·203 cites·19 claims
- 0698US4935397ASupported metallocene-alumoxane catalyst for high pressure polymerization of olefins and a method of preparing and using the sameEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jun 19, 1990·236 cites·12 claims
- 0798US4912075AMethod for preparing a supported metallocene-alumoxane catalyst for gas phase polymerizationEXXON CHEMICAL PATENTS INC·Filed 1987·Granted Mar 27, 1990·244 cites·20 claims
- 0897US5086025AMethod for preparing a silica gel supported metallocene-alumoxane catalystEXXON CHEMICAL PATENTS INC·Filed 1990·Granted Feb 4, 1992·160 cites·10 claims
- 0997US4914253AMethod for preparing polyethylene wax by gas phase polymerizationEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Apr 3, 1990·148 cites·12 claims
- 1096US8318626B2Internal and external donor compounds for olefin polymerization catalysts IIICHANG MAIN·Filed 2010·Granted Nov 27, 2012·21 cites·11 claims
- 1196US8003558B2Internal donor for olefin polymerization catalystsBASF CORP·Filed 2008·Granted Aug 23, 2011·21 cites·18 claims
- 1296US5147949APolymerization process using a silica gel supported metallocene-alumoxane catalystEXXON CHEMICAL PATENTS INC·Filed 1991·Granted Sep 15, 1992·148 cites·10 claims
- 1396US4925821AMethod for utilizing triethyaluminum to prepare an alumoxane support for an active metallocene catalystEXXON CHEMICAL PATENTS INC·Filed 1988·Granted May 15, 1990·112 cites·19 claims
- 1495US7135531B2Spherical catalyst for olefin polymerizationBASF CATALYSTS LLC·Filed 2005·Granted Nov 14, 2006·34 cites·25 claims
- 1594US8569195B2Internal and external donor compounds for olefin polymerization catalysts IICHANG MAIN·Filed 2010·Granted Oct 29, 2013·13 cites·18 claims
- 1694US8211819B2Internal and external donor compounds for olefin polymerization catalystsCHANG MAIN·Filed 2009·Granted Jul 3, 2012·19 cites·19 claims
- 1794US8003559B2Internal donor for olefin polymerization catalystsBASF CORP·Filed 2008·Granted Aug 23, 2011·19 cites·8 claims
- 1894US5529965APolymerization catalyst systems, their production and useEXXON CHEMICAL PATENTS INC·Filed 1994·Granted Jun 25, 1996·94 cites·27 claims
- 1994US5006500AOlefin polymerization catalyst from trialkylaluminum mixture, silica gel and a metalloceneEXXON CHEMICAL PATENTS INC·Filed 1989·Granted Apr 9, 1991·76 cites·9 claims
- 2088US7005491B2Propylene diene copolymerized polymersEXXONMOBIL CHEM PATENTS INC·Filed 2003·Granted Feb 28, 2006·27 cites·35 claims
- 2188US6809168B2Articles formed from propylene diene copolymersEXXONMOBIL CHEM PATENTS INC·Filed 2003·Granted Oct 26, 2004·30 cites·62 claims
- 2288US5032652ASupported vanadium catalyst for polymerization olefins and a process of preparing and use the sameEXXON CHEMICAL PATENTS INC·Filed 1989·Granted Jul 16, 1991·39 cites·11 claims
- 2387US6977287B2Propylene diene copolymersEXXONMOBIL CHEM PATENTS INC·Filed 2003·Granted Dec 20, 2005·26 cites·31 claims
- 2487US6962889B2Spherical catalyst for olefin polymerizationENGELHARD CORP·Filed 2004·Granted Nov 8, 2005·28 cites·21 claims
- 2584US8765626B2Internal donor structure for olefin polymerization catalysts and methods of making and using sameCHANG MAIN·Filed 2011·Granted Jul 1, 2014·3 cites·1 claims
- 2684US6184170B1Metallocene catalyst systemsEXXON CHEMICAL PATENTS INC·Filed 2000·Granted Feb 6, 2001·18 cites·45 claims
- 2784US5629253APolymerization catalyst systems, their production and useEXXON CHEMICAL PATENTS INC·Filed 1996·Granted May 13, 1997·78 cites·13 claims
- 2883US9284392B2Mixed internal donor structures for 1-olefin polymerization catalystsBASF CORP·Filed 2013·Granted Mar 15, 2016·4 cites·17 claims
- 2983US5064798ACatalyst for olefin polymerizationEXXON CHEMICAL PATENTS INC·Filed 1990·Granted Nov 12, 1991·42 cites·20 claims
- 3082US7326757B2Supported catalyst for olefin polymerizationBASF CATALYSTS LLC·Filed 2005·Granted Feb 5, 2008·5 cites·24 claims
- 3181US8933180B2Internal and external donor compounds for olefin polymerization catalysts IVBASF CATALYSTS LLC·Filed 2013·Granted Jan 13, 2015·3 cites·20 claims
- 3279US9738736B2Combined internal donor system for Ziegler-Natta polyolefin catalysts and methods of making and using sameW R GRACE & CO -CONN·Filed 2014·Granted Aug 22, 2017·3 cites·16 claims
- 3379US7153803B2High activity and good hydrogen response Ziegler-Natta polyethylene catalystENGELHARD CORP·Filed 2004·Granted Dec 26, 2006·21 cites·22 claims
- 3478US6136742AMetallocene catalyst systemsEXXON CHEMICAL PATENTS INC·Filed 1997·Granted Oct 24, 2000·29 cites·33 claims
- 3578US5017665ASupported catalyst for 1-olefin and 1,4-diolefin copolymerizationEXXON CHEMICAL PATENTS INC·Filed 1989·Granted May 21, 1991·25 cites·13 claims
- 3675US9562119B2Ethylene polymerization catalystsCHANG MAIN·Filed 2010·Granted Feb 7, 2017·2 cites·12 claims
- 3773US4935394ACatalyst for olefin polymerizationEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jun 19, 1990·21 cites·22 claims
- 3872US7700513B2Supported catalyst for olefin polymerizationBASF CATALYSTS LLC·Filed 2007·Granted Apr 20, 2010·2 cites·20 claims
- 3970US6734267B2Polymerization catalyst systems, their production and useUNIVATION TECH LLC·Filed 2003·Granted May 11, 2004·7 cites·18 claims
- 4068US10144790B2Internal donor structure for olefin polymerization catalysts and methods of making and using sameGRACE W R & CO·Filed 2017·Granted Dec 4, 2018·0 cites·11 claims
- 4166US9567410B2Internal donor structure for olefin polymerization catalysts and methods of making and using sameBASF CORP·Filed 2015·Granted Feb 14, 2017·0 cites·6 claims
- 4264US9217047B2Internal donor structure for olefin polymerization catalysts and methods of making and using sameCHANG MAIN·Filed 2014·Granted Dec 22, 2015·0 cites·8 claims
- 4361US6605560B1Polymerization catalyst systems, their production and useUNIVATION TECH LLC·Filed 1997·Granted Aug 12, 2003·13 cites·12 claims
- 4461US5373072ASupported catalyst for 1-olefin(s) (co)polymerizationFiled 1993·Granted Dec 13, 1994·17 cites·10 claims
- 4559US4904631ASupported vanadium catalyst for polymerization of olefins and a process of preparing and using the sameEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Feb 27, 1990·9 cites·10 claims
- 4645US2013231447A1New internal donors for ethylene polymerization catalysts and methods of making and using same iiBASF CORP·Filed 2013·Application pending·0 cites
- 4739US2001053837A1Articles formed from propylene diene copolymersFiled 2001·Application pending·0 cites
- 4836US6395847B2Supported organometallic catalysts and their use in olefin polymerizationEXXONMOBIL CHEM PATENTS INC·Filed 1999·Granted May 28, 2002·4 cites·22 claims
- 4936US2001007896A1Propylene diene copolymersFiled 2000·Application pending·0 cites
- 5036US2002013440A1Propylene diene copolymersFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →