Patents by Inventor Yu-Chuan Tu

Yu-Chuan Tu 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).

  • Electropolishing process means for inner and outer surfaces of a metal
    Patent number: 6776884
    Abstract: An electropolishing device having: an electrode device, which includes a positive electrode guide, a negative electrode guide, a positive electrode plate, a negative electrode plate and a negative working electrode; a clamping apparatus, which includes at least an insulated screw, an upper insulated piece and a lower insulated piece; and an insulated structure, which includes an upper insulated cover and a lower insulated cover.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: August 17, 2004
    Assignee: Industrial Technology Research Institute
    Inventors: Chun-Hung Lin, Chin-Ching Wu, Yun-Sheng Chung, Chin-Jyi Wu, Yung-Chen Peng, Yu-Chuan Tu
  • Electropolishing process means for inner and outer surfaces of a metal
    Publication number: 20030106792
    Abstract: The present invention is an electropolishing process means for inner and outer surfaces of a metal, especially applied to a metal that inner and outer surfaces both needing high clean and passivation. The present invention comprises: an electrode device, which includes a positive electrode guide, a negative electrode guide, a positive electrode plate, a negative electrode plate and a negative working electrode; a clamping apparatus, which includes at least an insulated screw, an upper insulated piece and a lower insulated piece; an insulated structure, which includes an upper insulated cover and a lower insulated cover.
    Type: Application
    Filed: February 19, 2002
    Publication date: June 12, 2003
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Hung Lin, Chin-Ching Wu, Yun-Sheng Chung, Yu-Chuan Tu, Chin-Jyi Wu, Yung-Chen Peng