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  • CPC
  • F04C23/001
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids Pumping installations specially adapted for elastic fluids Multi-stage pumps specially adapted for elastic fluids

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F04C23/001of similar working principle
Industries

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    MULTI-STAGE SCREW COMPRESSOR
    • Publication number 20240141896
    • Publication date May 2, 2024
    • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    • Takeshi TSUCHIYA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COOLING ARRANGEMENT AND METHOD FOR COOLING AN AT LEAST TWO-STAGE CO...
    • Publication number 20240068462
    • Publication date Feb 29, 2024
    • GARDNER DENVER DEUTSCHLAND GmbH
    • Frank Georg Klaus
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Apparatuses, Systems, and Methods for Improved Performance of a Pre...
    • Publication number 20230287874
    • Publication date Sep 14, 2023
    • OPTIMUM Power Technology, L.P.
    • Glen F. Chatfield
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    STACKED GEROTOR PUMP PRESSURE PULSATION REDUCTION
    • Publication number 20230235737
    • Publication date Jul 27, 2023
    • HAMILTON SUNDSTRAND CORPORATION
    • Edward W. Goy
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METHOD AND APPARATUS FOR A SUBMERSIBLE MULTISTAGE LABYRINTH-SCREW PUMP
    • Publication number 20230193903
    • Publication date Jun 22, 2023
    • Lex Submersible Pumps FZE Company
    • ANTON Shakirov
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM SYSTEM HAVING CONDENSER AND ROOT VACUUM PUMP SET
    • Publication number 20230167822
    • Publication date Jun 1, 2023
    • Raymond Zhou Shaw
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    MULTISTAGE COMPRESSOR SYSTEM WITH INTERCOOLER
    • Publication number 20230144667
    • Publication date May 11, 2023
    • Mark W. Wood
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTIPLE STAGE VACUUM PUMP
    • Publication number 20230076739
    • Publication date Mar 9, 2023
    • Edwards Limited
    • Alan Ernest Kinnaird Holbrook
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW COMPRESSOR HAVING ROTORS MOUNTED ON ONE SIDE
    • Publication number 20230071320
    • Publication date Mar 9, 2023
    • GARDNER DENVER DEUTSCHLAND GmbH
    • Ulrich Thomes
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DRY VACUUM PUMP
    • Publication number 20230033204
    • Publication date Feb 2, 2023
    • PFEIFFER VACUUM
    • Yann OLIVIER
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    VACUUM PUMP COOLER FOR COOLING A PUMPED FLUID IN A MULTISTAGE VACUU...
    • Publication number 20220412361
    • Publication date Dec 29, 2022
    • Edwards Limited
    • Mark Edward Tomkins
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP APPARATUS
    • Publication number 20220389930
    • Publication date Dec 8, 2022
    • Edwards Limited
    • Paul Milner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DRY-TYPE PRIMARY VACUUM PUMP AND METHOD FOR CONTROLLING THE INJECTI...
    • Publication number 20220372979
    • Publication date Nov 24, 2022
    • PFEIFFER VACUUM
    • Paul DECORDE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP UNIT
    • Publication number 20220299030
    • Publication date Sep 22, 2022
    • PFEIFFER VACUUM
    • Eric MANDALLAZ
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Dual-Stage Compressor, Control Method Thereof and Air Conditioning...
    • Publication number 20220268280
    • Publication date Aug 25, 2022
    • GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    • Hua Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Pump Stage Assembly, External Gear Pump, Use Of A Pump Stage Assemb...
    • Publication number 20220243803
    • Publication date Aug 4, 2022
    • Vitesco Technologies GMBH
    • Christian BÖHM
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE-FREQUENCY COMPRESSOR WITH ADAPTIVE HEATING POWER CONTROL...
    • Publication number 20220186730
    • Publication date Jun 16, 2022
    • DANFOSS (TIANJIN) LTD.
    • Shizhong Ji
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Apparatuses, Systems, and Methods for Improved Performance of a Pre...
    • Publication number 20220136493
    • Publication date May 5, 2022
    • OPTIMUM Power Technology, L.P.
    • Glen F. Chatfield
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR AND AIR CONDITIONING SYSTEM
    • Publication number 20220136507
    • Publication date May 5, 2022
    • GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    • Mingsheng ZHUO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID TRANSFER APPARATUS
    • Publication number 20220127997
    • Publication date Apr 28, 2022
    • Korea Atomic Energy Research Institute
    • Yongkwon KOH
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP HAVING A SILENCER
    • Publication number 20220128055
    • Publication date Apr 28, 2022
    • Leybold GmbH
    • Dieter Kolvenbach
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTISTAGE PUMP BODY AND MULTISTAGE GAS PUMP
    • Publication number 20220127962
    • Publication date Apr 28, 2022
    • ATELIERS BUSCH SA
    • Théodore Iltchev
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COOLING ARRANGEMENT AND METHOD FOR COOLING AN AT LEAST TWO-STAGE CO...
    • Publication number 20220106954
    • Publication date Apr 7, 2022
    • GARDNER DENVER DEUTSCHLAND GmbH
    • Frank Georg Klaus
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    AIR CONDITIONER AND COMPRESSOR
    • Publication number 20220049701
    • Publication date Feb 17, 2022
    • Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    • Yanjun HU
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Method for Controlling a Compressor Installation
    • Publication number 20220049693
    • Publication date Feb 17, 2022
    • KAESER KOMPRESSOREN SE
    • Thomas Oppel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DUAL-CYLINDER TWO-STAGE VARIABLE CPACITY COMPRESSOR
    • Publication number 20220034320
    • Publication date Feb 3, 2022
    • SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.
    • Yanzhen WANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE CAPACITY COMPRESSOR
    • Publication number 20220025887
    • Publication date Jan 27, 2022
    • SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.
    • Yanzhen WANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METHOD FOR OPERATING A VACUUM PUMP SYSTEM AND VACUUM PUMP SYSTEM AP...
    • Publication number 20210404469
    • Publication date Dec 30, 2021
    • ATLAS COPCO AIRPOWER, naamloze vennootschap
    • Joeri COECKELBERGS
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMPING SYSTEM HAVING A PLURALITY OF POSITIVE DISPLACEMENT V...
    • Publication number 20210372405
    • Publication date Dec 2, 2021
    • Agilent Technologies, Inc.
    • Christian Spada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID TRANSFER DEVICE
    • Publication number 20210372403
    • Publication date Dec 2, 2021
    • Korea Atomic Energy Research Institute
    • Yongkwon Koh
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...