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Thomas Dreifert

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Patents Grantslast 30 patents

  • Information Patent Grant

    Screw vacuum pump without internal cooling
    • Patent number 11,300,123
    • Issue date Apr 12, 2022
    • LEYBOLD GMBH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump screw rotors with symmetrical profiles on low pitch sec...
    • Patent number 11,293,435
    • Issue date Apr 5, 2022
    • LEYBOLD GMBH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump system
    • Patent number 10,465,686
    • Issue date Nov 5, 2019
    • LEYBOLD GMBH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Roots pump connection channels separating adjacent pump stages
    • Patent number 9,476,423
    • Issue date Oct 25, 2016
    • Oerlikon Leybold Vaccum GmbH
    • Peter Birch
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 9,234,519
    • Issue date Jan 12, 2016
    • Oerlikon Leybold Vacuum GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Eccentric pump and method for operation of said pump
    • Patent number 7,186,098
    • Issue date Mar 6, 2007
    • Oerlikon Leybold Vacuum GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 7,153,093
    • Issue date Dec 26, 2006
    • Leybold Vacuum GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Two shaft vacuum pump with cantilevered rotors
    • Patent number 6,964,559
    • Issue date Nov 15, 2005
    • Leybold Vakuum GmbH
    • Manfred Behling
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Two-shaft vacuum pump
    • Patent number 6,863,511
    • Issue date Mar 8, 2005
    • Leybold Vakuum GmbH
    • Hartmut Kriehn
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Dry compressing vacuum pump having a gas ballast device
    • Patent number 6,776,588
    • Issue date Aug 17, 2004
    • Leybold Vakuum GmbH
    • Lutz Arndt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Cooled screw vacuum pump
    • Patent number 6,544,020
    • Issue date Apr 8, 2003
    • Leybold Vakuum GmbH
    • Rudolf Bahnen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw vacuum pump provided with rotors
    • Patent number 6,382,930
    • Issue date May 7, 2002
    • Leybold Vakuum GmbH
    • Rudolf Bahnen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    VACUUM PUMP
    • Publication number 20230323879
    • Publication date Oct 12, 2023
    • Leybold GmbH
    • Dirk Schiller
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DUAL OR MULTI-SHAFT VACUUM PUMP
    • Publication number 20210270270
    • Publication date Sep 2, 2021
    • Leybold GmbH
    • Dirk Schiller
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTI-STAGE ROTARY PISTON PUMP
    • Publication number 20210140430
    • Publication date May 13, 2021
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20200362861
    • Publication date Nov 19, 2020
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW ROTOR
    • Publication number 20200325897
    • Publication date Oct 15, 2020
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM-PUMP ROTOR
    • Publication number 20190264686
    • Publication date Aug 29, 2019
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SCREW ROTOR
    • Publication number 20190211822
    • Publication date Jul 11, 2019
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW-TYPE VACUUM PUMP
    • Publication number 20190203711
    • Publication date Jul 4, 2019
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DRY-COMPRESSING VACUUM PUMP
    • Publication number 20190186493
    • Publication date Jun 20, 2019
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP SYSTEM
    • Publication number 20180202445
    • Publication date Jul 19, 2018
    • Leybold GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SYSTEM
    • Publication number 20180112666
    • Publication date Apr 26, 2018
    • Leybold GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SYSTEM
    • Publication number 20170122319
    • Publication date May 4, 2017
    • Leybold GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROOTS PUMP
    • Publication number 20140205483
    • Publication date Jul 24, 2014
    • Peter Birch
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP
    • Publication number 20120315165
    • Publication date Dec 13, 2012
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SYSTEM
    • Publication number 20120189478
    • Publication date Jul 26, 2012
    • Oerlikon Leybold Vacuum GmbH
    • Thomas Dreifert
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    VACUUM PUMP HOUSING AND SET OF COOLING ELEMENTS FOR A VACCUM PUMP H...
    • Publication number 20120034110
    • Publication date Feb 9, 2012
    • Thomas Dreifert
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    METHOD FOR REACTING SELF-IGNITING DUSTS IN A VACUUM PUMP DEVICE
    • Publication number 20100086883
    • Publication date Apr 8, 2010
    • OERLIKON LEYBOLD VACUUM GMBH
    • Uwe Zöllig
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vacuum Pump
    • Publication number 20090148284
    • Publication date Jun 11, 2009
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Shaft Seal
    • Publication number 20090140495
    • Publication date Jun 4, 2009
    • OBERLIKON LEYBOLD VACUUM GMBH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Eccentric pump and method for operation of said pump
    • Publication number 20050163632
    • Publication date Jul 28, 2005
    • LEYBOLD VAKUUM GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vacuum pump
    • Publication number 20050147517
    • Publication date Jul 7, 2005
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Two-shaft vacuum pump
    • Publication number 20040091380
    • Publication date May 13, 2004
    • Hartmut Kriehn
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Screw vacuum pump comprising additional flow bodies
    • Publication number 20040067149
    • Publication date Apr 8, 2004
    • Wolfgang Giebmanns
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vacuum pump with two co-operating rotors
    • Publication number 20030152468
    • Publication date Aug 14, 2003
    • Manfred Behling
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...