Patents by Inventor Yung-Yueh Liu

Yung-Yueh Liu 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).

  • Method of making a wax mold for a golf club head
    Patent number: 8020606
    Abstract: A method of making a wax mold for a golf club head includes the steps of: a) positioning a male die in a cavity of a female die; b) injecting and filling dissolvable wax into a gap between an outer surface of the male die and an inner surface of the female die; c) cooling and solidifying the dissolvable wax in the gap to obtain a wax shell; d) removing the wax shell from the male die and the female die, the wax shell being provided with a hole extending through inner and outer surfaces of the wax shell; and e) inserting a wax plug into the hole to form the wax mold.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: September 20, 2011
    Assignee: O-TA Precision Industry Co. Ltd.
    Inventors: Hsiao-Wen Chao, Lung-Sheng Sun, Yung-Yueh Liu
  • METHOD OF MAKING A WAX MOLD FOR A GOLF CLUB HEAD
    Publication number: 20100065240
    Abstract: A method of making a wax mold for a golf club head includes the steps of: a) positioning a male die in a cavity of a female die; b) injecting and filling dissolvable wax into a gap between an outer surface of the male die and an inner surface of the female die; c) cooling and solidifying the dissolvable wax in the gap to obtain a wax shell; d) removing the wax shell from the male die and the female die, the wax shell being provided with a hole extending through inner and outer surfaces of the wax shell; and e) inserting a wax plug into the hole to form the wax mold.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Applicant: O-TA Precision Industry Co. LTD.
    Inventors: Hsiao-Wen CHAO, Lung-Sheng Sun, Yung-Yueh Liu