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Dale A. Zellers

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  • Bartlesville, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 9,610,558
    • Issue date Apr 4, 2017
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Pumping apparatus and process for polymerization in loop reactors
    • Patent number 9,266,974
    • Issue date Feb 23, 2016
    • Chevron Phillips Chemical Company LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 9,221,920
    • Issue date Dec 29, 2015
    • Chevron Philips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Multiple component feed methods and systems
    • Patent number 8,992,840
    • Issue date Mar 31, 2015
    • Chevron Phillips Chemical Company LP
    • David H. Burns
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 8,765,884
    • Issue date Jul 1, 2014
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 8,569,433
    • Issue date Oct 29, 2013
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Pumping apparatus and process for polymerization in loop reactors
    • Patent number 8,354,063
    • Issue date Jan 15, 2013
    • Chevron Phillips Chemical Company LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 8,303,899
    • Issue date Nov 6, 2012
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 8,128,877
    • Issue date Mar 6, 2012
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Energy efficient polyolefin process
    • Patent number 8,017,701
    • Issue date Sep 13, 2011
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Pumping apparatus and process for polymerization in loop reactors
    • Patent number 7,736,597
    • Issue date Jun 15, 2010
    • Chevron Phillips Chemical Company LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method and system to reduce polymerization reactor fouling
    • Patent number 7,645,841
    • Issue date Jan 12, 2010
    • Chevron Phillips Chemical Company LP
    • Benjamin M. Shaw
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Multiple component feed methods and systems
    • Patent number 7,615,596
    • Issue date Nov 10, 2009
    • Chevron Phillips Chemical Company LP
    • David H. Burns
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Large catalyst activator
    • Patent number 7,179,426
    • Issue date Feb 20, 2007
    • Chevron Phillips Chemical Company, LP
    • John D. Hottovy
    • F26 - DRYING
  • Information Patent Grant

    Process and apparatus for reducing take-off valve plugging in a pol...
    • Patent number 7,015,289
    • Issue date Mar 21, 2006
    • Chevron Phillips Chemical Company, LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Pumping apparatus for slurry polymerization in loop reactors
    • Patent number 7,014,821
    • Issue date Mar 21, 2006
    • Chevron Phillips Chemical Company, LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Blow molding process
    • Patent number 6,605,247
    • Issue date Aug 12, 2003
    • Phillips Petroleum
    • Dale A. Zellers
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Blow molding apparatus with fixedly positioned pin and reciprocatin...
    • Patent number 6,435,856
    • Issue date Aug 20, 2002
    • Phillips Petroleum Company
    • Dale A. Zellers
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Fractionation of methyl-mercaptan reactor effluent
    • Patent number 4,186,061
    • Issue date Jan 29, 1980
    • Phillips Petroleum Company
    • Dale A. Zellers
    • C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20160101399
    • Publication date Apr 14, 2016
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20140256889
    • Publication date Sep 11, 2014
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20140024788
    • Publication date Jan 23, 2014
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    PUMPING APPARATUS AND PROCESS FOR POLYMERIZATION IN LOOP REACTORS
    • Publication number 20130102742
    • Publication date Apr 25, 2013
    • Chevron Phillips Chemical Company LP
    • John D. Hottovy
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20130056899
    • Publication date Mar 7, 2013
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20120139149
    • Publication date Jun 7, 2012
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    ENERGY EFFICIENT POLYOLEFIN PROCESS
    • Publication number 20110300025
    • Publication date Dec 8, 2011
    • Chevron Phillips Chemical Company LP
    • Robert R. McElvain
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    PUMPING APPARATUS AND PROCESS FOR POLYMERIZATION IN LOOP REACTORS
    • Publication number 20100215550
    • Publication date Aug 26, 2010
    • Chevron Phillips Chemical Company LP
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Multiple component feed methods and systems
    • Publication number 20090326168
    • Publication date Dec 31, 2009
    • Chevron Phillips Chemical Company LP
    • David H. Burns
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Multiple component feed methods and systems
    • Publication number 20070078238
    • Publication date Apr 5, 2007
    • Chevron Phillips Chemical Company, LP
    • David H. Burns
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Pumping apparatus and process for polymerization in loop reactors
    • Publication number 20060159595
    • Publication date Jul 20, 2006
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Method and system to reduce polymerization reactor fouling
    • Publication number 20060045823
    • Publication date Mar 2, 2006
    • Benjamin M. Shaw
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Process and apparatus for reducing take-off valve plugging in a pol...
    • Publication number 20040158007
    • Publication date Aug 12, 2004
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Pumping apparatus and process for slurry polymerization in loop rea...
    • Publication number 20040132928
    • Publication date Jul 8, 2004
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Loop reactor apparatus and polymerization processes with multiple f...
    • Publication number 20040116625
    • Publication date Jun 17, 2004
    • John D. Hottovy
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Large catalyst activator
    • Publication number 20040052692
    • Publication date Mar 18, 2004
    • John D. Hottovy
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Blow molding process and apparatus for use therein
    • Publication number 20020195749
    • Publication date Dec 26, 2002
    • Phillips Petroleum Company
    • Dale A. Zellers
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL