Patents by Inventor Chen-Ping Tsai

Chen-Ping Tsai 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).

  • Electrolytic copper foil and method for producing the same
    Patent number: 9365942
    Abstract: An electrolytic copper foil is provided. The electrolytic copper foil has a shiny side and a matte side opposing to the shiny side, wherein the difference in roughness between the shiny side and the matte side is 0.5 ?m or less. The electrolytic copper foil has a tensile strength of 45 kg/mm2 or above, and is particularly suitable for applications in a lithium ion secondary battery.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 14, 2016
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chen-Ping Tsai, Kuei-Sen Cheng, Chyen-Fu Lin
  • Method for producing porous copper foil
    Patent number: 9365940
    Abstract: The present invention provides a method for producing a porous copper foil. The method of the present invention includes the steps of forming an oxide film by providing a chromium-containing compound to a metal surface of a cathode; forming a copper foil on the oxide film by performing electrolysis of copper; and removing the copper foil from the metal surface of the cathode. The method of the present invention is simple and time-saving, and the porous copper foil of the present invention has reduced roughness difference between both sides of the porous copper foil.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: June 14, 2016
    Assignee: Chang Chun Petrochemical Co., Ltd.
    Inventors: Chen-Ping Tsai, Jui-Chang Chou, Kuei-Sen Cheng
  • ELECTROLYTIC COPPER FOIL AND METHOD FOR PRODUCING THE SAME
    Publication number: 20140193660
    Abstract: An electrolytic copper foil is provided. The electrolytic copper foil has a shiny side and a matte side opposing to the shiny side, wherein the difference in roughness between the shiny side and the matte side is 0.5 ?m or less. The electrolytic copper foil has a tensile strength of 45 kg/mm2 or above, and is particularly suitable for applications in a lithium ion secondary battery.
    Type: Application
    Filed: October 25, 2013
    Publication date: July 10, 2014
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chen-Ping Tsai, Kuei-Sen Cheng, Chyen-Fu Lin
  • METHOD FOR PRODUCING POROUS COPPER FOIL
    Publication number: 20120111733
    Abstract: The present invention provides a method for producing a porous copper foil. The method of the present invention includes the steps of forming an oxide film by providing a chromium-containing compound to a metal surface of a cathode; forming a copper foil on the oxide film by performing electrolysis of copper; and removing the copper foil from the metal surface of the cathode. The method of the present invention is simple and time-saving, and the porous copper foil of the present invention has reduced roughness difference between both sides of the porous copper foil.
    Type: Application
    Filed: January 11, 2011
    Publication date: May 10, 2012
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chen-Ping Tsai, Jui-Chang Chou, Kuei-Sen Cheng