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Ren Jianchang

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  • Beijing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum switch tube
    • Patent number 8,319,137
    • Issue date Nov 27, 2012
    • Beijing Orient Vacuum Electric Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switch tube
    • Patent number 8,269,129
    • Issue date Sep 18, 2012
    • Beijing Orient Vacuum Electric Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switch tube
    • Patent number 8,269,128
    • Issue date Sep 18, 2012
    • Beijing Orient Vacuum Electric Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switch tube
    • Patent number 8,178,813
    • Issue date May 15, 2012
    • Beijing Orient Vacuum Electric Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multipolar integrated contact for power switchgear
    • Patent number 6,891,120
    • Issue date May 10, 2005
    • Bo Technology Group Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Integrated contact for power switchgear
    • Patent number 6,891,121
    • Issue date May 10, 2005
    • BOE Technology Group Co., Ltd.
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    INSULATING HOUSING WITH INTEGRATED FUNCTIONS AND MANUFACTURING METH...
    • Publication number 20170287662
    • Publication date Oct 5, 2017
    • Beijing Orient Vacuum Electric Co.,Ltd.
    • Jianchang REN
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    VACUUM SWITCH TUBE
    • Publication number 20110186549
    • Publication date Aug 4, 2011
    • BEIJING ORIENT VACUUM ELECTRIC CO., LTD
    • JIANCHANG REN
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    VACUUM SWITCH TUBE
    • Publication number 20110186546
    • Publication date Aug 4, 2011
    • BEIJING ORIENT VACUUM ELECTRIC CO., LTD
    • JIANCHANG REN
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    VACUUM SWITCH TUBE
    • Publication number 20110186547
    • Publication date Aug 4, 2011
    • BEIJING ORIENT VACUUM ELECTRIC CO., LTD
    • JIANCHANG REN
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    VACUUM SWITCH TUBE
    • Publication number 20110186548
    • Publication date Aug 4, 2011
    • BEIJING ORIENT VACUUM ELECTRIC CO., LTD
    • JIANCHANG REN
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Multipolar itegrated contact for power switchgear
    • Publication number 20040035827
    • Publication date Feb 26, 2004
    • Jianchang Ren
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Integrated contact for power switchgear
    • Publication number 20040035828
    • Publication date Feb 26, 2004
    • Ren Jianchang
    • H01 - BASIC ELECTRIC ELEMENTS