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Wing Chi TANG

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  • Kowloon, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Diamond clarity measurement process and system
    • Patent number 11,835,466
    • Issue date Dec 5, 2023
    • GOLDWAY TECHNOLOGY LIMITED
    • Ka Wing Cheng
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Process and system for colour grading for diamonds
    • Patent number 11,326,952
    • Issue date May 10, 2022
    • GOLDWAY TECHNOLOGY LIMITED
    • Koon Chung Hui
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Process and system for diamond clarity measurement
    • Patent number 11,137,355
    • Issue date Oct 5, 2021
    • GOLDWAY TECHNOLOGY LIMITED
    • Koon Chung Hui
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Diamond clarity measurement process and system
    • Patent number 11,016,033
    • Issue date May 25, 2021
    • GOLDWAY TECHNOLOGY LIMITED
    • Ka Wing Cheng
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Colour grading process and system for diamonds
    • Patent number 10,762,666
    • Issue date Sep 1, 2020
    • GOLDWAY TECHNOLOGY LIMITED
    • Ka Wing Cheng
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Method of providing markings to precious stones including gemstones...
    • Patent number 10,475,355
    • Issue date Nov 12, 2019
    • Chow Tai Fook Jewellery Company Limited
    • Koon Chung Hui
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric condiment grinder
    • Patent number 7,775,467
    • Issue date Aug 17, 2010
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric dual condiment grinder
    • Patent number 7,708,220
    • Issue date May 4, 2010
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Dual condiment grinder
    • Patent number 7,637,447
    • Issue date Dec 29, 2009
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Battery pack
    • Patent number D601493
    • Issue date Oct 6, 2009
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack
    • Patent number D541213
    • Issue date Apr 24, 2007
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack
    • Patent number D528974
    • Issue date Sep 26, 2006
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack for combined electric pepper and salt mill
    • Patent number D528503
    • Issue date Sep 19, 2006
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Battery pack
    • Patent number D528070
    • Issue date Sep 12, 2006
    • Samson Bright Industrial Company Limited
    • Wing Sum Tang
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Condiment dispenser
    • Patent number 6,951,314
    • Issue date Oct 4, 2005
    • Samson Bright Industrial Co. Ltd.
    • Wing Sum Tang
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents