Patents by Inventor Rong-Ming Ke

Rong-Ming Ke 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).

  • Titanyl phthalocyanine, method for production thereof and electrophotographic photoreceptor containing the same
    Patent number: 6284420
    Abstract: A peroxide-modified titanyl phthalocyanine for use in preparing charge generating layer of a photoreceptor is disclosed. The peroxide-modified titanyl phthalocyanine is obtained by subjecting titanyl phthalocyanine to a peroxide-induced complexation-mediated crystal transformation at a low temperature. The peroxide-modified titanyl phthalocyanine is characterized by having Bragg diffraction angles of 7.3, 9.4, 14.0, 24.1, 25.7, 27.2 and 28.5 degrees, and vibrational absorption resonances at 1486 cm (superscript: −1), 1420 cm (superscript: −1), 1134 cm (superscript: −1), 1078 cm (superscript: −1), 966 cm (superscript: −1), 900 cm (superscript: −1), 762 cm (superscript: −1) and 736 cm (superscript: −1). The photoreceptor exhibits excellent photosensitivity at wavelengths in the near-infrared range and has a unique crystal form, especially the peroxide-modified titanyl phthalocyanine shows a higher distinct absorption peak at the wavelength of 780 nm.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: September 4, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Jia-Ming Liu, Kuo-Tung Huang, Chiang-Yun Lee, Mei-Tyz Peng, Cheng-Chi Wang, Rong-Ming Ke