Patents by Inventor Wei-Chu Ko

Wei-Chu Ko 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).

  • Patent number: 6973932
    Abstract: A toothpick and interdental brush combination comprises a case comprising a lengthwise groove on a side, first and second end openings both in communication with the groove; and an assembly slidable in the case, the assembly comprising a projected trigger member, a first body member extended from the trigger member toward the first end, an interdental brush integrally formed with the first body member at first end, a second body member extended from the trigger member toward the second end, and a toothpick integrally formed with the second body member at the second end. In a storage state both the toothpick and the interdental brush are concealed in the case, or in a use state of the interdental brush or the toothpick a pushing of the trigger member toward the first or the second end causes the interdental brush or the toothpick to project from the first or the second opening respectively.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: December 13, 2005
    Inventor: Wei-Chu Ko
  • Publication number: 20040055619
    Abstract: A toothpick and interdental brush combination comprises a case comprising a lengthwise groove on a side, first and second end openings both in communication with the groove; and an assembly slidable in the case, the assembly comprising a projected trigger member, a first body member extended from the trigger member toward the first end, an interdental brush integrally formed with the first body member at first end, a second body member extended from the trigger member toward the second end, and a toothpick integrally formed with the second body member at the second end. In a storage state both the toothpick and the interdental brush are concealed in the case, or in a use state of the interdental brush or the toothpick a pushing of the trigger member toward the first or the second end causes the interdental brush or the toothpick to project from the first or the second opening respectively.
    Type: Application
    Filed: September 23, 2002
    Publication date: March 25, 2004
    Inventor: Wei-Chu Ko