TREA

Tsang-Chang Hwang

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  • Taipei, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Manual and automatic flow control valve
    • Patent number 6,659,420
    • Issue date Dec 9, 2003
    • Tsang-Chang Hwang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Automatic soap dispensing device
    • Patent number 6,036,056
    • Issue date Mar 14, 2000
    • Kuo-Chou Lee
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Automatic toilet bowl cleaner
    • Patent number 5,611,465
    • Issue date Mar 18, 1997
    • Kuo-Chou Lee
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Automatic soap dispenser
    • Patent number 5,492,247
    • Issue date Feb 20, 1996
    • Aling Shu
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Manual and automatic flow control valve
    • Publication number 20030178591
    • Publication date Sep 25, 2003
    • Tsang-Chang Hwang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...