Patents by Inventor Tu-Tan Huang

Tu-Tan Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pen possible to sound
    Patent number: 5944436
    Abstract: A pen possible to sound includes a housing, an ink holder, a fit member, a gear set, and an operative member combined together. An elastic strip is provided in an intermediate portion of the housing, and the ink holder is movably located in a lower portion of the housing. An operative member is positioned in and on the outer surface of the housing, having a rack engaging a pinion of a main gear of the gear set. If the operative member is repeatedly pushed down, the elastic strip is snapped by an eccentric gear of the gear set, giving out sounds.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: August 31, 1999
    Assignee: Hau Mei Industrial Co., Ltd.
    Inventor: Tu-Tan Huang
  • Key ring
    Patent number: D398773
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 29, 1998
    Assignee: Han Mei Industrial Co. Ltd.
    Inventor: Tu-Tan Huang
  • Pen
    Patent number: D402692
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: December 15, 1998
    Assignee: Hau Mei Industrial Co., Ltd.
    Inventor: Tu-Tan Huang