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Masaki Koyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Linear motor system and compressor
    • Patent number 11,411,522
    • Issue date Aug 9, 2022
    • Hitachi, Ltd.
    • Takahiro Suzuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Linear compressor and linear compressor control system
    • Patent number 11,401,924
    • Issue date Aug 2, 2022
    • Hitachi Astemo, Ltd.
    • Kaito Hotta
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Linear motor control apparatus and compressor equipped with the same
    • Patent number 11,329,541
    • Issue date May 10, 2022
    • Hitachi Astemo, Ltd.
    • Takahiro Suzuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Linear motor and compressor
    • Patent number 11,211,858
    • Issue date Dec 28, 2021
    • Hitachi Astemo, Ltd.
    • Masaki Koyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Power conversion device and system using the same
    • Patent number 11,171,576
    • Issue date Nov 9, 2021
    • HITACHI ASTEMO, LTD.
    • Wataru Hatsuse
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Linear motor system and compressor
    • Patent number 10,784,809
    • Issue date Sep 22, 2020
    • Hitachi, Ltd.
    • Takahiro Suzuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air suspension system
    • Patent number 10,766,330
    • Issue date Sep 8, 2020
    • Hitachi Automotive Systems, Ltd.
    • Shinji Seto
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Linear motor and apparatus using same
    • Patent number 10,727,727
    • Issue date Jul 28, 2020
    • Hitachi, Ltd.
    • Yasuaki Aoyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Motor system and compressor equipped therewith
    • Patent number 10,288,117
    • Issue date May 14, 2019
    • Hitachi, Ltd.
    • Takahiro Suzuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Linear motor and compressor equipped with linear motor
    • Patent number 10,090,748
    • Issue date Oct 2, 2018
    • Hitachi, Ltd.
    • Shuhei Nagata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Refrigerant compressor and refrigeration cycle device
    • Patent number 10,047,746
    • Issue date Aug 14, 2018
    • Hitachi-Johnston Controls Air Conditioning, Inc.
    • Masaki Koyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Refrigerant compressor and refrigeration cycle apparatus using the...
    • Patent number 9,470,230
    • Issue date Oct 18, 2016
    • Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited
    • Masaki Koyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Displacement type fluid machine
    • Patent number 6,637,550
    • Issue date Oct 28, 2003
    • Hitachi, Ltd.
    • Masaki Koyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Scroll compressor
    • Patent number 6,494,696
    • Issue date Dec 17, 2002
    • Hitachi, Ltd.
    • Toshiyuki Terai
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor with oiling mechanism
    • Patent number 5,947,709
    • Issue date Sep 7, 1999
    • Hitachi, Ltd.
    • Masaki Koyama
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Scroll compressor with oiling mechanism
    • Patent number 5,716,202
    • Issue date Feb 10, 1998
    • Hitachi, Ltd.
    • Masaki Koyama
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    SEALING DEVICE AND DAMPER FOR HYDRAULIC EQUIPMENT
    • Publication number 20230392666
    • Publication date Dec 7, 2023
    • KYB Corporation
    • Masaki KOYAMA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20220316549
    • Publication date Oct 6, 2022
    • KYB Corporation
    • Takeshi YASUI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    LINEAR COMPRESSOR AND LINEAR COMPRESSOR CONTROL SYSTEM
    • Publication number 20210071653
    • Publication date Mar 11, 2021
    • Hitachi Automotive Systems, Ltd.
    • Kaito HOTTA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    AIR SUSPENSION SYSTEM AND CAMERA CLEANING SYSTEM
    • Publication number 20210001678
    • Publication date Jan 7, 2021
    • Hitachi Automotive Systems, Ltd.
    • Masaki KOYAMA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Linear Motor System and Compressor
    • Publication number 20200373866
    • Publication date Nov 26, 2020
    • Hitachi, Ltd
    • Takahiro SUZUKI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LINEAR MOTOR CONTROL APPARATUS AND COMPRESSOR EQUIPPED WITH THE SAME
    • Publication number 20200195119
    • Publication date Jun 18, 2020
    • Hitachi Automotive Systems, Ltd.
    • Takahiro SUZUKI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LINEAR MOTOR AND COMPRESSOR
    • Publication number 20190356207
    • Publication date Nov 21, 2019
    • Hitachi Automotive Systems, Ltd.
    • Masaki KOYAMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    POWER CONVERSION DEVICE AND SYSTEM USING THE SAME
    • Publication number 20190238066
    • Publication date Aug 1, 2019
    • Hitachi Automotive Systems, Ltd.
    • Wataru HATSUSE
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Linear Motor System and Compressor
    • Publication number 20190170130
    • Publication date Jun 6, 2019
    • Hitachi, Ltd
    • Takahiro SUZUKI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    AIR SUSPENSION SYSTEM
    • Publication number 20180304718
    • Publication date Oct 25, 2018
    • Hitachi Automotive Systems, Ltd.
    • Shinji SETO
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Motor System and Compressor Equipped Therewith
    • Publication number 20180003224
    • Publication date Jan 4, 2018
    • Hitachi, Ltd
    • Takahiro SUZUKI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Linear Motor and Apparatus Using Same
    • Publication number 20170054355
    • Publication date Feb 23, 2017
    • Hitachi, Ltd
    • Yasuaki AOYAMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    LINEAR MOTOR AND COMPRESSOR EQUIPPED WITH LINEAR MOTOR
    • Publication number 20160149477
    • Publication date May 26, 2016
    • Hitachi, Ltd
    • Shuhei NAGATA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Refrigerant Compressor and Refrigeration Cycle Device
    • Publication number 20150159649
    • Publication date Jun 11, 2015
    • Hitachi, Ltd
    • Masaki Koyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Refrigerant Compressor
    • Publication number 20140294643
    • Publication date Oct 2, 2014
    • Hitachi, Ltd
    • Masaki KOYAMA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Refrigerant Compressor and Refrigeration Cycle Apparatus Using the...
    • Publication number 20140056727
    • Publication date Feb 27, 2014
    • Hitachi, Ltd
    • Masaki Koyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Displacement type fluid machine
    • Publication number 20020033305
    • Publication date Mar 21, 2002
    • Masaki Koyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Scroll compressor
    • Publication number 20010026766
    • Publication date Oct 4, 2001
    • Toshiyuki Terai
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...