Patents by Inventor Zhang Li

Zhang Li 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).

  • Publication number: 20040178712
    Abstract: A cold cathode discharge device with high efficiency of light emission and long life is prepared by a cold cathode having both high secondary electron emission and anti-spattering property.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 16, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Sakai, Tomio Ono, Naoshi Sakuma, Zhang Li
  • Patent number: 6781294
    Abstract: A cold cathode discharge device with high efficiency of light emission and long life is prepared by a cold cathode having both high secondary electron emission and anti-spattering property. Using carbon system cold cathodes constituted of a mixed phase of diamond and graphite, a cold cathode discharge device with high efficiency of light emission and long life is realized. It is desirable that an element having a wavelength of light emission equal to or shorter than 200 nanometers should be mixed in the discharge gas.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: August 24, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Sakai, Tomio Ono, Naoshi Sakuma, Zhang Li
  • Publication number: 20020140352
    Abstract: A cold cathode discharge device with high efficiency of light emission and long life is prepared by a cold cathode having both high secondary electron emission and anti-spattering property.
    Type: Application
    Filed: March 18, 2002
    Publication date: October 3, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Sakai, Tomio Ono, Naoshi Sakuma, Zhang Li