TREA

of stepped piston type

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  • CPC
  • F04B25/02
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS F04B25/00Multi-stage pumps

Current Industry

F04B25/02of stepped piston type
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Piston in piston variable displacement hydraulic device
    • Patent number 11,994,121
    • Issue date May 28, 2024
    • Tonand Inc.
    • Antonio Cannata
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    System of gas compression utilizing variable input pressures to pro...
    • Patent number 11,994,124
    • Issue date May 28, 2024
    • Evan Scott Guy
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage compressor
    • Patent number 11,988,200
    • Issue date May 21, 2024
    • DONGGUAN XIANMA ELECTROMECHANICAL CO., LTD
    • Menglin Zou
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method for operating a pressure control system having a multi-stage...
    • Patent number 11,965,498
    • Issue date Apr 23, 2024
    • ZF CV Systems Europe BV
    • Joerg Scharpenberg
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Internally cooled inline drive compressor
    • Patent number 11,680,560
    • Issue date Jun 20, 2023
    • Wayne A Wolf
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable-pressure air pump
    • Patent number 11,655,808
    • Issue date May 23, 2023
    • Scott Wu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve controlled vacuum system
    • Patent number 11,491,421
    • Issue date Nov 8, 2022
    • Hamilton Sundstrand Corporation
    • Gerald P. Dyer
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Variable pressure air pump having a first cylinder defining a first...
    • Patent number 11,480,167
    • Issue date Oct 25, 2022
    • Scott Wu
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Free piston linear motor compressor and associated systems of opera...
    • Patent number 11,466,678
    • Issue date Oct 11, 2022
    • Gas Technology Institute
    • Jason Stair
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vehicle-mounted electric oil-free air compressor
    • Patent number 11,428,215
    • Issue date Aug 30, 2022
    • RUILI GROUP RUIAN AUTO PARTS CO., LTD
    • Bin Zhu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air pump
    • Patent number 11,293,419
    • Issue date Apr 5, 2022
    • BETO ENGINEERING AND MARKETING CO., LTD.
    • Lopin Wang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage displacement pump
    • Patent number 11,181,103
    • Issue date Nov 23, 2021
    • Waters Technologies Corporation
    • Wade P. Leveille
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Internally cooled inline drive compressor
    • Patent number 11,118,578
    • Issue date Sep 14, 2021
    • EXTIEL HOLDINGS, LLC
    • Wayne A Wolf
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas leak determining method, and multi-stage compressor
    • Patent number 11,085,430
    • Issue date Aug 10, 2021
    • Kobe Steel, Ltd.
    • Yasuharu Matsumoto
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable pressure air pump
    • Patent number 10,815,981
    • Issue date Oct 27, 2020
    • Scott Wu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor
    • Patent number 10,746,162
    • Issue date Aug 18, 2020
    • Kobe Steel, Ltd.
    • Kenji Nagura
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressors for natural gas and related devices, systems, and methods
    • Patent number 10,731,636
    • Issue date Aug 4, 2020
    • Go Natural CNG, LLC
    • Jessie Daniel Strickland
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump device for a brake system with a reluctance drive
    • Patent number 10,683,857
    • Issue date Jun 16, 2020
    • Robert Bosch GmbH
    • Guenter Escher
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Compressors for natural gas and related devices, systems, and methods
    • Patent number 10,359,032
    • Issue date Jul 23, 2019
    • Go Natural CNG, LLC
    • Jessie Daniel Strickland
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Free piston linear motor compressor and associated systems of opera...
    • Patent number 10,323,628
    • Issue date Jun 18, 2019
    • Gas Technology Institute
    • Jason Stair
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Compressor
    • Patent number 10,087,918
    • Issue date Oct 2, 2018
    • Kobe Steel, Ltd.
    • Takashi Okuno
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressors for natural gas and related devices, systems, and methods
    • Patent number 9,816,497
    • Issue date Nov 14, 2017
    • Go Natural CNG, LLC
    • Jessie Daniel Strickland
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double acting refrigeration compressor
    • Patent number 9,777,717
    • Issue date Oct 3, 2017
    • Inficon GmbH
    • Werner Schmidt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Linear piezoelectric compressor
    • Patent number 9,745,970
    • Issue date Aug 29, 2017
    • Technion Research and Development Foundation Ltd.
    • Sergey Sobol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method of lifting oil from a well
    • Patent number 9,458,706
    • Issue date Oct 4, 2016
    • John Splawn Page
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Fluid compression system
    • Patent number 9,175,676
    • Issue date Nov 3, 2015
    • LES CHAUSSURES STC INC.
    • Regis Fortin
    • A43 - FOOTWEAR
  • Information Patent Grant

    Multi-stage compressor
    • Patent number 8,708,666
    • Issue date Apr 29, 2014
    • Leobersdorfer Maschinenfabrik AG
    • Ernst Huttar
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage compressor
    • Patent number 8,568,107
    • Issue date Oct 29, 2013
    • Leobersdorfer Maschinenfabrik AG
    • Ernst Huttar
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage compressor
    • Patent number 8,376,717
    • Issue date Feb 19, 2013
    • Leobersdorfer Maschinenfabrik AG
    • Ernst Huttar
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Apparatus for compressing and storing oxygen enriched gas
    • Patent number 8,123,497
    • Issue date Feb 28, 2012
    • Invacare Corporation
    • Joseph B. Richey, II
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

  • Information Patent Application

    PISTON IN PISTON VARIABLE DISPLACEMENT HYDRAULIC DEVICE
    • Publication number 20240410345
    • Publication date Dec 12, 2024
    • Tonand Inc.
    • Antonio Cannata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PROCESS FOR INTERNALLY COOLING AN INLINE COMPRESSOR
    • Publication number 20230272789
    • Publication date Aug 31, 2023
    • WAYNE A. WOLF
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    RECIPROCATING COMPRESSOR
    • Publication number 20230250812
    • Publication date Aug 10, 2023
    • Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    • Daisuke WADA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GAS LIFT COMPRESSOR SYSTEM AND METHOD FOR SUPPLYING COMPRESSED GAS...
    • Publication number 20220090595
    • Publication date Mar 24, 2022
    • Estis Compression, LLC
    • Will Nelle
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    VARIABLE-PRESSURE AIR PUMP
    • Publication number 20220049688
    • Publication date Feb 17, 2022
    • Scott Wu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INTERNALLY COOLED INLINE DRIVE COMPRESSOR
    • Publication number 20210372388
    • Publication date Dec 2, 2021
    • WAYNE A WOLF
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GAS LIFT COMPRESSOR SYSTEM AND METHOD FOR SUPPLYING COMPRESSED GAS...
    • Publication number 20210348604
    • Publication date Nov 11, 2021
    • Estis Compression, LLC
    • Will Nelle
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    AIR PUMP
    • Publication number 20200300233
    • Publication date Sep 24, 2020
    • BETO ENGINEERING AND MARKETING CO., LTD
    • Lopin WANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METHOD FOR OPERATING A PRESSURE CONTROL SYSTEM HAVING A MULTI-STAGE...
    • Publication number 20200049137
    • Publication date Feb 13, 2020
    • WABCO GMBH
    • Joerg Scharpenberg
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    COMPRESSORS FOR NATURAL GAS AND RELATED DEVICES, SYSTEMS, AND METHODS
    • Publication number 20190345922
    • Publication date Nov 14, 2019
    • GO NATURAL CNG, LLC
    • Jessie Daniel Strickland
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GAS LEAK DETERMINING METHOD, AND MULTI-STAGE COMPRESSOR
    • Publication number 20190331103
    • Publication date Oct 31, 2019
    • Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    • Yasuharu MATSUMOTO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20190285061
    • Publication date Sep 19, 2019
    • GAL GOLDNER
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20190154022
    • Publication date May 23, 2019
    • Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    • Kenji NAGURA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INTERNALLY COOLED INLINE DRIVE COMPRESSOR
    • Publication number 20180230984
    • Publication date Aug 16, 2018
    • EXTIEL HOLDINGS, LLC
    • WAYNE A WOLF
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSORS FOR NATURAL GAS AND RELATED DEVICES, SYSTEMS, AND METHODS
    • Publication number 20180066640
    • Publication date Mar 8, 2018
    • GO NATURAL CNG, LLC
    • Jessie Daniel Strickland
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FREE PISTON LINEAR MOTOR COMPRESSOR AND ASSOCIATED SYSTEMS OF OPERA...
    • Publication number 20180051690
    • Publication date Feb 22, 2018
    • GAS TECHNOLOGY INSTITUTE
    • Jason STAIR
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LINEAR COMPRESSOR
    • Publication number 20170002801
    • Publication date Jan 5, 2017
    • LG Electronics Inc.
    • Sanghyun BAE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LINEAR PIEZOELECTRIC COMPRESSOR
    • Publication number 20150147207
    • Publication date May 28, 2015
    • Technion Research & Development Foundation Ltd.
    • Sergey Sobol
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DOUBLE ACTING REFRIGERATION COMPRESSOR
    • Publication number 20130287611
    • Publication date Oct 31, 2013
    • Inficon gmbH
    • Werner Schmidt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTI-STAGE COMPRESSOR
    • Publication number 20130164151
    • Publication date Jun 27, 2013
    • LEOBERSDORFER MASCHINENFABRIK AG
    • ERNST HUTTAR
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTI-STAGE COMPRESSOR
    • Publication number 20130164150
    • Publication date Jun 27, 2013
    • LEOBERSDORFER MASCHINENFABRIK AG
    • ERNST HUTTAR
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    AIR PUMP
    • Publication number 20120282114
    • Publication date Nov 8, 2012
    • TONAND BRAKES INC.
    • Antonio Cannata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID COMPRESSION SYSTEM
    • Publication number 20120233989
    • Publication date Sep 20, 2012
    • LES CHAUSSURES STC INC.
    • Regis Fortin
    • A43 - FOOTWEAR
  • Information Patent Application

    APPARATUS FOR COMPRESSING AND STORING OXYGEN ENRICHED GAS
    • Publication number 20120152248
    • Publication date Jun 21, 2012
    • INVACARE CORPORATION
    • Joseph B. RICHEY, II
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    MULTI-STAGE COMPRESSOR
    • Publication number 20110164990
    • Publication date Jul 7, 2011
    • Ernst Huttar
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID MACHINE
    • Publication number 20110052430
    • Publication date Mar 3, 2011
    • ANDREAS HOFER HOCHDRUCKTECHNIK GMBH
    • Manfred Dehnen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VAPOR RECOVERY GAS PRESSURE BOOSTERS AND METHODS AND SYSTEMS FOR US...
    • Publication number 20100158717
    • Publication date Jun 24, 2010
    • MIDWEST PRESSURE SYSTEMS, INC.
    • Robert A. Vogt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTI-STAGE PISTON COMPRESSOR
    • Publication number 20090311114
    • Publication date Dec 17, 2009
    • J.P. SAUER & SOHN MASCHINENBAU GMBH
    • Harald Schulz
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    APPARATUS FOR COMPRESSING AND STORING OXYGEN ENRICHED GAS
    • Publication number 20080118373
    • Publication date May 22, 2008
    • INVACARE CORPORATION
    • Joseph B. Richey
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SINGLE STAGE TO TWO STAGE COMPRESSOR
    • Publication number 20070258831
    • Publication date Nov 8, 2007
    • RAGAIN AIR COMPRESSORS, INC.
    • David Kim Irick
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...