Patents by Inventor Wen-Tsai CHANG

Wen-Tsai CHANG 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).

  • Long-acting heat pipe and corresponding manufacturing method
    Patent number: 8919427
    Abstract: A heat pipe includes a metal tube, a heat-absorption part, a capillary and working fluid. The metal tube has a chamber formed therein. A vapor channel and a liquid channel communicating with the vapor channel are formed in the chamber. The heat-absorption part corresponds to a portion of the vapor channel and the liquid channel. The capillary is arranged in the vapor channel and in the liquid channel of the heat-absorption part. The working fluid fills the chamber.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: December 30, 2014
    Assignee: Chaun-Choung Technology Corp.
    Inventors: Cheng-Tu Wang, Pang-Hung Liao, Kuo-Feng Tseng, Wen-Tsai Chang
  • LONG-ACTING HEAT PIPE AND CORRESPONDING MANUFACTURING METHOD
    Publication number: 20090260793
    Abstract: A heat pipe includes a metal tube, a heat-absorption part, a capillary and working fluid. The metal tube has a chamber formed therein. A vapor channel and a liquid channel communicated with the vapor channel are formed in the chamber. The heat-absorption part is formed on the metal tube and corresponds to a portion of the vapor channel and the liquid channel. The capillary is arranged in the vapor channel and the liquid channel of the heat-absorption part. The working fluid is filled in the chamber.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Inventors: Cheng-Tu WANG, Pang-Hung LIAO, Kuo-Feng TSENG, Wen-Tsai CHANG