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Yuli Ma

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  • Beijing, CN
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Patents Applicationslast 30 patents

  • Information Patent Application

    MARINE CYLINDER OIL COMPOSITE ADDITIVE
    • Publication number 20150144430
    • Publication date May 28, 2015
    • Petrochina Company Limited
    • Yuekui Zhai
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Application

    MARINE CYLINDER OIL COMPOSITE ADDITIVE
    • Publication number 20120231985
    • Publication date Sep 13, 2012
    • PetroChina Company Limited
    • Yuekui Zhai
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...