Patents by Inventor Zi-Yu Liu

Zi-Yu 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).

  • Digital spectrophotometer and spectrological method
    Patent number: 7773215
    Abstract: A digital spectrophotometer and a spectrologial method for determining spectrum wavelength of an unknown illuminant, and the digital spectrophotometer has a base, an operating assembly and a photographic assembly. The operating assembly is attached to the base and has an operating pedestal, a rotating frame and a spectrometer. The rotating frame is connected rotatably to the operating pedestal. The spectrometer is connected solidly to the rotating frame. The photographic assembly is connected to the operating assembly. The spectrologial method is calculated the diffraction angle ? i and the wavelength of the unknown illuminant by putting the parameters into the into the first and second functions.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 10, 2010
    Assignee: Shin-Hsiang Huang
    Inventors: Jwh Lee, Shih-Fang Wu, Zi-Yu Liu, Zhe-Rui Zhang
  • Digital spectrophotometer and spectrological method
    Publication number: 20080278720
    Abstract: A digital spectrophotometer and a spectrologial method for determining spectrum wavelength of an unknown illuminant, and the digital spectrophotometer has a base, an operating assembly and a photographic assembly. The operating assembly is attached to the base and has an operating pedestal, a rotating frame and a spectrometer. The rotating frame is connected rotatably to the operating pedestal. The spectrometer is connected solidly to the rotating frame. The photographic assembly is connected to the operating assembly. The spectrologial method is calculated the diffraction angle ? i and the wavelength of the unknown illuminant by putting the parameters into the into the first and second functions.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 13, 2008
    Inventors: Jwh Lee, Shih-Fang Wu, Zi-Yu Liu, Zhe-Rui Zhang