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Ya-Ching CHAN

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  • Yun Lin Hsien, TW
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    SAFETY LADDER
    • Publication number 20230220730
    • Publication date Jul 13, 2023
    • YA-CHING CHAN
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    VENTILATION ASSEMBLY
    • Publication number 20220307266
    • Publication date Sep 29, 2022
    • Ya-Ching CHAN
    • E04 - BUILDING
  • Information Patent Application

    VENTILATION DEVICE
    • Publication number 20190249889
    • Publication date Aug 15, 2019
    • Ya-Ching CHAN
    • E04 - BUILDING
  • Information Patent Application

    VENTILATION ROOF
    • Publication number 20190017276
    • Publication date Jan 17, 2019
    • Ya-Ching CHAN
    • E04 - BUILDING
  • Information Patent Application

    STRUCTURE OF A VENTILATED ROOF
    • Publication number 20190017275
    • Publication date Jan 17, 2019
    • Ya-Ching CHAN
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    ESCAPE BASE ON A ROOF
    • Publication number 20150096246
    • Publication date Apr 9, 2015
    • Ya-Ching CHAN
    • E04 - BUILDING
  • Information Patent Application

    HEAT DISSIPATING STRUCTURE FOR AN IRON-SHEET HOUSE
    • Publication number 20150060011
    • Publication date Mar 5, 2015
    • Ya-Ching CHAN
    • E04 - BUILDING