Inventor · disambiguated record
Douglas D. Klendworth
Also filed as: KLENDWORTH DOUGLAS · KLENDWORTH DOUGLAS D
29 granted patents·2 pending applications·798 citations·filing 1986–2009
97Inventor score
Files withPHILLIPS PETROLEUM CO15EQUISTAR CHEM LP9QUANTUM CHEM CORP3KLENDWORTH DOUGLAS D2NOVOLEN TECH HOLDINGS CV2
Top patents by PatentIndex Score
31 records- 0194US4735931AIn situ comonomer generation in olefin polymerizationPHILLIPS PETROLEUM CO·Filed 1986·Granted Apr 5, 1988·86 cites·10 claims
- 0291US4820785AIn situ comonomer generation in olefin polymerizationPHILLIPS PETROLEUM CO·Filed 1988·Granted Apr 11, 1989·60 cites·16 claims
- 0389US4788171APhosphated calcined aluminaPHILLIPS PETROLEUM CO·Filed 1987·Granted Nov 29, 1988·42 cites·16 claims
- 0489US4693991AHydrotreating catalyst compositionPHILLIPS PETROLEUM CO·Filed 1986·Granted Sep 15, 1987·52 cites·16 claims
- 0588US5171798AFluorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1991·Granted Dec 15, 1992·53 cites·17 claims
- 0688US4655906AHydrotreating process employing a novel catalytic compositionPHILLIPS PETROLEUM CO·Filed 1986·Granted Apr 7, 1987·50 cites·15 claims
- 0787US5534472AVanadium-containing catalyst systemQUANTUM CHEM CORP·Filed 1995·Granted Jul 9, 1996·93 cites·47 claims
- 0886US6656995B2Process for producing olefin polymer composites having improved melt strengthEQUISTAR CHEM LP·Filed 2002·Granted Dec 2, 2003·23 cites·22 claims
- 0986US5219817AFluorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1992·Granted Jun 15, 1993·47 cites·16 claims
- 1085US10358513B2High activity Ziegler-Natta catalysts, process for producing catalysts and use thereofKLENDWORTH DOUGLAS D·Filed 2009·Granted Jul 23, 2019·12 cites·34 claims
- 1184US5221654AFluorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1992·Granted Jun 22, 1993·41 cites·17 claims
- 1283US6646072B2Process for making polyolefin compositions containing exfoliated clayEQUISTAR CHEM LP·Filed 2002·Granted Nov 11, 2003·17 cites·17 claims
- 1382US6395669B1Catalyst component and systemEQUISTAR CHEM LP·Filed 2000·Granted May 28, 2002·34 cites·14 claims
- 1480US5001204AAlumina phosphated with partial esterPHILLIPS PETROLEUM CO·Filed 1990·Granted Mar 19, 1991·32 cites·27 claims
- 1578US7071137B2Method of making a ziegler-natta catalystNOVOLEN TECH HOLDINGS CV·Filed 2004·Granted Jul 4, 2006·18 cites·37 claims
- 1675US6967231B1Olefin polymerization processEQUISTAR CHEM LP·Filed 2004·Granted Nov 22, 2005·11 cites·13 claims
- 1773US6630544B1Propylene polymerization process with enhanced catalyst activityEQUISTAR CHEM LP·Filed 2002·Granted Oct 7, 2003·13 cites·18 claims
- 1872US6800703B1Method for preparing propylene polymers having broad molecular weight distributionEQUISTAR CHEM LP·Filed 2003·Granted Oct 5, 2004·10 cites·10 claims
- 1972US5221720AFluorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1992·Granted Jun 22, 1993·21 cites·17 claims
- 2061US4960748AAlumina phosphated with partial esterPHILLIPS PETROLEUM CO·Filed 1987·Granted Oct 2, 1990·12 cites·19 claims
- 2159US5219962AFluorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1992·Granted Jun 15, 1993·12 cites·17 claims
- 2257US5221655AFlorided aluminas, catalysts, and polymerization processesPHILLIPS PETROLEUM CO·Filed 1992·Granted Jun 22, 1993·10 cites·19 claims
- 2356US7402546B2Magnesium chloride supportEQUISTAR CHEM LP·Filed 2004·Granted Jul 22, 2008·3 cites·9 claims
- 2454US5141624ACatalytic cracking processPHILLIPS PETROLEUM CO·Filed 1989·Granted Aug 25, 1992·15 cites·19 claims
- 2552US5051388ASupported polymerization catalystQUANTUM CHEM CORP·Filed 1990·Granted Sep 24, 1991·9 cites·39 claims
- 2651US6979718B2Process for making polyolefin compositions containing exfoliated clayEQUISTAR CHEM LP·Filed 2003·Granted Dec 27, 2005·1 cites·6 claims
- 2747US5104949ASupported polymerization catalystQUANTUM CHEM CORP·Filed 1991·Granted Apr 14, 1992·7 cites·29 claims
- 2847US5043514AEthylene dimerization and polymerizationPHILLIPS PETROLEUM CO·Filed 1988·Granted Aug 27, 1991·9 cites·14 claims
- 2944US2007213204A1Ziegler-Natta catalyst with in situ-generated donorNOVOLEN TECH HOLDINGS CV·Filed 2006·Application pending·0 cites
- 3039US6093673APolymerization system with organosilicon compoundEQUISTAR CHEM LP·Filed 1999·Granted Jul 25, 2000·5 cites·10 claims
- 3134US2006046928A1Ziegler-natta catalyst and method for making and using sameKLENDWORTH DOUGLAS D·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →