Inventor · disambiguated record
Daniel P. Zilker, Jr.
Also filed as: ZILKER DANIEL P · ZILKER DANIEL P JR · ZILKER DANIEL PAUL · ZILKER JR DANIEL P
46 granted patents·2 pending applications·850 citations·filing 1990–2021
98Inventor score
Files withUNIVATION TECH LLC24UNION CARBIDE CHEM PLASTIC9CANN KEVIN J2EXXONMOBIL CHEMICAL PATENTS INC2GOODE MARK G1
Top patents by PatentIndex Score
48 records- 0198US9902790B2Producing polyolefin productsUNIVATION TECH LLC·Filed 2015·Granted Feb 27, 2018·11 cites·13 claims
- 0298US9850332B2Producing polyolefin products with improved stiffness, toughness, and processabilityUNIVATION TECH LLC·Filed 2015·Granted Dec 26, 2017·9 cites·17 claims
- 0398US6989344B2Supported chromium oxide catalyst for the production of broad molecular weight polyethyleneUNIVATION TECH LLC·Filed 2003·Granted Jan 24, 2006·105 cites·13 claims
- 0497US10308742B2Producing polyolefin products with improved stiffness, toughness, and processabilityUNIVATION TECH LLC·Filed 2015·Granted Jun 4, 2019·5 cites·20 claims
- 0597US8420754B2Production of polyethyleneCANN KEVIN J·Filed 2010·Granted Apr 16, 2013·30 cites·10 claims
- 0697US7563851B2Production of broad molecular weight polyethyleneUNIVATION TECH LLC·Filed 2005·Granted Jul 21, 2009·35 cites·11 claims
- 0797US7504463B2Production of broad molecular weight polyethyleneUNIVATION TECH LLC·Filed 2005·Granted Mar 17, 2009·38 cites·5 claims
- 0896US9540460B2Preparation of polyolefinUNIVATION TECH LLC·Filed 2013·Granted Jan 10, 2017·21 cites·12 claims
- 0996US6987152B1Feed purification at ambient temperatureUNIVATION TECH LLC·Filed 2005·Granted Jan 17, 2006·45 cites·19 claims
- 1095US8497330B2Methods for polymerization using spray dried and slurried catalystHUSSEIN F DAVID·Filed 2010·Granted Jul 30, 2013·24 cites·16 claims
- 1194US8383730B2Bimodal polyethylene compositions for blow molding applicationsUNIVATION TECH LLC·Filed 2012·Granted Feb 26, 2013·13 cites·10 claims
- 1294US5034361ACatalyst precursor productionSHELL OIL CO·Filed 1990·Granted Jul 23, 1991·97 cites·31 claims
- 1393US11193008B2Methods for making polyolefin polymer compositionsEXXONMOBIL CHEMICAL PATENTS INC·Filed 2018·Granted Dec 7, 2021·4 cites·13 claims
- 1493US9221937B2Methods and systems for olefin polymerizationUNIVATION TECH LLC·Filed 2013·Granted Dec 29, 2015·10 cites·19 claims
- 1593US8202940B2Bimodal polyethylene compositions for blow molding applicationsJAKER STEPHEN P·Filed 2009·Granted Jun 19, 2012·30 cites·10 claims
- 1692US11034783B2Method of producing polyethylene and polyethylene thereofUNIVATION TECH LLC·Filed 2019·Granted Jun 15, 2021·1 cites·7 claims
- 1792US8433443B2Method for on-line monitoring and control of polymerization processes and reactors to prevent discontinuity eventsHAGERTY ROBERT O·Filed 2008·Granted Apr 30, 2013·21 cites·30 claims
- 1892US8318872B2Method for controlling bimodal catalyst activity during polymerizationSAVATSKY BRUCE J·Filed 2008·Granted Nov 27, 2012·26 cites·13 claims
- 1991US10167351B2Methods of controlling polyolefin melt index while increasing catalyst productivityUNIVATION TECH LLC·Filed 2015·Granted Jan 1, 2019·4 cites·19 claims
- 2091US8835582B2Catalyst systems and methods for using same to produce polyolefin productsCANN KEVIN J·Filed 2011·Granted Sep 16, 2014·9 cites·30 claims
- 2191US5342907AEthylene/propylene copolymer rubbersUNION CARBIDE CHEM PLASTIC·Filed 1993·Granted Aug 30, 1994·72 cites·13 claims
- 2289US8329835B2Polyethylene compositions having improved propertiesGOODE MARK G·Filed 2008·Granted Dec 11, 2012·12 cites·26 claims
- 2389US7634937B2Systems and methods for monitoring solids using mechanical resonatorSYMYX SOLUTIONS INC·Filed 2005·Granted Dec 22, 2009·15 cites·77 claims
- 2486US10399052B2Methods of controlling polyolefin melt indexUNIVATION TECH LLC·Filed 2015·Granted Sep 3, 2019·2 cites·17 claims
- 2586US7238756B2Polymerization process and control of polymer composition propertiesUNIVATION TECH LLC·Filed 2003·Granted Jul 3, 2007·24 cites·36 claims
- 2685US10253121B2Method of producing polyethylene and polyethylene thereofUNIVATION TECH LLC·Filed 2015·Granted Apr 9, 2019·1 cites·10 claims
- 2783US11708438B2Method of producing polyethylene and polyethylene thereofUNIVATION TECH LLC·Filed 2021·Granted Jul 25, 2023·0 cites·7 claims
- 2883US5567665AShape-shifted magnesium alkoxide component for polymerizing olefinsUNION CARBIDE CHEM PLASTIC·Filed 1995·Granted Oct 22, 1996·38 cites·7 claims
- 2982US9512254B2Increased polymer melt flow ratio via feed of a supported catalyst saturated with a selected liquid agentUNIVATION TECH LLC·Filed 2013·Granted Dec 6, 2016·3 cites·16 claims
- 3081US8742041B2Processes for the polymerization of olefins with extracted metal carboxylate saltsPEQUENO R ERIC·Filed 2011·Granted Jun 3, 2014·5 cites·20 claims
- 3180US8598287B2Metallocene catalysts and their use in polymerization processesKUO CHI-I·Filed 2008·Granted Dec 3, 2013·5 cites·7 claims
- 3279US6592827B1Sampling system for fluidized bed gas phase polymerization reaction systemsUNIVATION TECH LLC·Filed 2000·Granted Jul 15, 2003·21 cites·10 claims
- 3379US5652314AShape-shifted magnesium alkoxide component for polymerizing olefinsUNION CARBIDE CHEM PLASTIC·Filed 1996·Granted Jul 29, 1997·32 cites·8 claims
- 3476US9637567B2Spray-dried catalyst compositions and polymerization processes employing the sameMARIOTT WESLEY R·Filed 2012·Granted May 2, 2017·3 cites·18 claims
- 3574US10113019B2Methods of changing polyolefin production conditions to mitigate small gels in a polyolefin articleUNIVATION TECH LLC·Filed 2015·Granted Oct 30, 2018·1 cites·15 claims
- 3673US5604172AShape-shifted magnesium alkoxide component for polymerizing olefinsUNION CARBIDE CHEM PLASTIC·Filed 1996·Granted Feb 18, 1997·28 cites·7 claims
- 3769US9938361B2Methods for preparing catalyst systems with increased productivityUNIVATION TECH LLC·Filed 2013·Granted Apr 10, 2018·1 cites·14 claims
- 3866US7847036B2Method for reducing and/or preventing production of excessively low density polymer product during polymerization transitionsUNIVATION TECH LLC·Filed 2007·Granted Dec 7, 2010·1 cites·12 claims
- 3963US2009312506A1Production of polyethyleneUNIVATION TECH LLC·Filed 2009·Application pending·0 cites
- 4062US10167350B2Preparation of polyolefinUNIVATION TECH LLC·Filed 2016·Granted Jan 1, 2019·0 cites·5 claims
- 4159US11230614B2Methods for making polyethylene polymersEXXONMOBIL CHEMICAL PATENTS INC·Filed 2017·Granted Jan 25, 2022·0 cites·14 claims
- 4254US11028191B2Polymerization catalysts with improved ethylene enchainmentUNIVATION TECH LLC·Filed 2017·Granted Jun 8, 2021·0 cites·8 claims
- 4350US6388027B1Transition strategy for the production of sticky polymersUNION CARBIDE CHEM PLASTIC·Filed 2000·Granted May 14, 2002·13 cites·5 claims
- 4449US5548040AProcess for passivation of a reactor after shutdown of alpha olefin polymerization processesUNION CARBIDE CHEM PLASTIC·Filed 1994·Granted Aug 20, 1996·7 cites·10 claims
- 4547US2010041841A1Effervescent nozzle for catalyst injectionUNIVATION TECCHNOLOGIES LLC·Filed 2007·Application pending·0 cites
- 4645US6255420B1Start-up process for gas phase production of polybutadieneUNION CARBIDE CHEM PLASTIC·Filed 1999·Granted Jul 3, 2001·11 cites·8 claims
- 4742US6011128AProcess for conditioning a gas-phase reactor to produce an ethylene-propylene or ethylene-propylene-diene rubberUNION CARBIDE CHEM PLASTIC·Filed 1998·Granted Jan 4, 2000·11 cites·8 claims
- 4837US6540165B1Process for handling particulate material at elevated pressureUNION CARBIDE CHEM PLASTIC·Filed 1999·Granted Apr 1, 2003·6 cites·18 claims
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