Patents Assigned to Echem Hightech Co., Ltd.
  • Derivatives of tiacumicin B as anti-cancer agents
    Publication number: 20090110718
    Abstract: New derivatives of tiacumicin B are disclosed and are presented by the general formula: wherein R is The use of these derivatives as a method for treating cancer or tumor is disclosed. A method of treating cancer or tumor by administrating the patient a composition comprising a therapeutically effective amount of the tiacumicin B is also disclosed.
    Type: Application
    Filed: February 25, 2008
    Publication date: April 30, 2009
    Applicant: Echem Hightech Co., Ltd.
    Inventors: Mei-Chiao Wu, Chang-Cheng Huang, Yi-Chen Lu, Wei-Jen Fan
  • Pyrimidine spirobifluorene oligomer for organic light-emitting device
    Patent number: 6872824
    Abstract: A fluorene-based pyrimidine-containing conjugated oligomer applied in six different layers in an OLED, respectively, used as an electron-transport emitting layer, an emitting layer, a host in the emitting layer, the ETL, a host in the electron-transport emitting layer, and a hole-blocking layer to upgrade light-emitting efficiency and regulate emitting color of the OLED.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: March 29, 2005
    Assignee: Echem Hightech Co., Ltd.
    Inventors: Ken Tsung Wong, Yuan Li Liao, Chung Chih Wu, Yu Ting Lin, Huo Hsien Chiang