TREA

Yi Cao

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  • Jiaozhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Adjustable door sill
    • Patent number 11,952,829
    • Issue date Apr 9, 2024
    • QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD.
    • Minghui Chen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

  • Information Patent Application

    Screen Doors
    • Publication number 20240191569
    • Publication date Jun 13, 2024
    • QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD.
    • Jianxun ZHANG
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Door Leaves and Doors Incorporating the Door Leaves
    • Publication number 20240175311
    • Publication date May 30, 2024
    • QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD.
    • Minghui CHEN
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Adjustable Door Sill
    • Publication number 20240141716
    • Publication date May 2, 2024
    • QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD.
    • Minghui CHEN
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS