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Kazumasa Yamada

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  • Ohta-ku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Restarting device for a fluid operated double diaphragm piston pump
    • Patent number 6,644,940
    • Issue date Nov 11, 2003
    • Yamada Corporation
    • Kazumasa Yamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Diaphragm pump
    • Patent number 6,126,403
    • Issue date Oct 3, 2000
    • Yamada T.S. Co., Ltd.
    • Kazumasa Yamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Diaphragm assembly and method of manufacturing same
    • Patent number 5,758,565
    • Issue date Jun 2, 1998
    • Yamada T.S. Co., Ltd.
    • Kazumasa Yamada
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Diaphragm assembly and method of manufacturing same
    • Patent number 5,743,169
    • Issue date Apr 28, 1998
    • Yamada T.S. Co., Ltd.
    • Kazumasa Yamada
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Switching device for reciprocating pumps
    • Patent number 5,120,202
    • Issue date Jun 9, 1992
    • Yamada Yuki Seizo Co., Ltd.
    • Minoru Murata
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Switching device for reciprocating pumps
    • Patent number 5,002,469
    • Issue date Mar 26, 1991
    • Yamada Yuki Seizo Co., Ltd.
    • Minoru Murata
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Switching device for reciprocating pumps
    • Patent number 5,002,468
    • Issue date Mar 26, 1991
    • Yamada Yuki Seizo Co., Ltd.
    • Minoru Murata
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Spool type switching valve device
    • Patent number 4,923,168
    • Issue date May 8, 1990
    • 501 Yamada Yuki Seizo Co., Ltd.
    • Minoru Murata
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Diaphragm pump with pressure chamber having a ribbed wall
    • Patent number 4,817,503
    • Issue date Apr 4, 1989
    • Yamada Yuki Seizo Co., Ltd.
    • Kazumasa Yamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    Restarting device of a pump
    • Publication number 20020076340
    • Publication date Jun 20, 2002
    • Kazumasa Yamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...