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Yunfeng Ma

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  • Suzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for growing GZO (ZnO:Ga) crystals
    • Patent number 9,458,553
    • Issue date Oct 4, 2016
    • Beijing University of Technology
    • Yijian Jiang
    • C30 - CRYSTAL GROWTH
  • Information Patent Grant

    Passively mode-locked picosecond laser device
    • Patent number 8,340,143
    • Issue date Dec 25, 2012
    • Beijing GK Laser Technology Co., Ltd.
    • Zhongwei Fan
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Portable generator
    • Patent number 7,699,027
    • Issue date Apr 20, 2010
    • Yunfeng Ma
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Portable generator
    • Patent number D597485
    • Issue date Aug 4, 2009
    • Yunfeng Ma
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Portable Engine
    • Patent number 7,559,297
    • Issue date Jul 14, 2009
    • Yunfeng Ma
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    A Method for Growing GZO (ZnO:Ga) Crystals
    • Publication number 20160230308
    • Publication date Aug 11, 2016
    • Yijian Jiang
    • C30 - CRYSTAL GROWTH
  • Information Patent Application

    PASSIVELY MODE-LOCKED PICOSECOND LASER DEVICE
    • Publication number 20120039345
    • Publication date Feb 16, 2012
    • BEIJING GK LASER TECHNOLOGY CO., LTD.
    • Zhongwei Fan
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Portable Engine
    • Publication number 20090044781
    • Publication date Feb 19, 2009
    • Yunfeng Ma
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Portable Generator
    • Publication number 20090045684
    • Publication date Feb 19, 2009
    • Yunfeng Ma
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    Portable generator
    • Publication number 20080088136
    • Publication date Apr 17, 2008
    • Yunfeng Ma
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS