TREA

Cheng-Hua Chuang

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  • Taipei City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pen cap
    • Patent number D446245
    • Issue date Aug 7, 2001
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • D19 - Office supplies
  • Information Patent Grant

    Pen cap
    • Patent number D436997
    • Issue date Jan 30, 2001
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • D19 - Office supplies
  • Information Patent Grant

    Building blocks type writing instrument
    • Patent number 6,149,330
    • Issue date Nov 21, 2000
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Building block type writing implement
    • Patent number D422308
    • Issue date Apr 4, 2000
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • D19 - Office supplies
  • Information Patent Grant

    Building block-type writing implement
    • Patent number D419187
    • Issue date Jan 18, 2000
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • D19 - Office supplies
  • Information Patent Grant

    Writing device
    • Patent number 5,984,550
    • Issue date Nov 16, 1999
    • Pioneer Industrial Corp.
    • Cheng-Hwa Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Toy bear writing implement
    • Patent number D384103
    • Issue date Sep 23, 1997
    • Pioneer Industrial Corporation
    • Cheng-hua Chuang
    • D19 - Office supplies
  • Information Patent Grant

    Refill eraser
    • Patent number 5,345,652
    • Issue date Sep 13, 1994
    • Pioneer Industrial Co.
    • Cheng-Hwa Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument with cap
    • Patent number 5,221,152
    • Issue date Jun 22, 1993
    • Pioneer Industrial Corp.
    • Cheng-Hwa Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 5,044,804
    • Issue date Sep 3, 1991
    • Pioneer Industrial Corp.
    • Cheng-Hwa Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    MARK-ERASABLE PEN CAP
    • Publication number 20100266326
    • Publication date Oct 21, 2010
    • Cheng-Hua Chuang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES