Patents by Inventor Tong H. Chang

Tong H. Chang 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).

  • Patent number: 6699720
    Abstract: The present invention relates to an interference-eliminating membrane for use in detecting uric acid in a sample, comprising a compound for inhibiting or shading uric acid interfering substances, or derivatives thereof, and a carrier having an absorption property and permeability for the sample; and a process for preparing the interference-eliminating membrane. The present invention also provides a test strip for use in detecting uric acid in a sample, comprising a reagent reaction layer or optional interference-eliminating membranes and/or support layers; and a kit comprising the test strip of the invention.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 2, 2004
    Assignee: Development Center for Biotechnology
    Inventors: Tsai Yun Lee, Yi Chih Lei, Shi-Yuan Sheu, Yu Fen Tsai, Tai-Guang Wu, Hung-Hsiu Ho, Ming-Yen Kuo, Jiuan J. Liu, Tong H. Chang, Hsueh-Fang Chen, Liahng-Yirn Liu
  • Patent number: 5283066
    Abstract: Disclosed is a method of stimulating an immune response by using a hapten. Haptens are adhered onto a solid phase support to form a complex. This complex can stimulate an immune response of an animal and the animal's lymphocytes. The solid phase supports usable in the method preferably are membranes, latex particles or microparticle beads of hydrophilic cellulose mixed ester, nitrocellulose, cellulose acetate, nylon, polyvinylidone, vinylbenzyl chloromethyl styrene, polyacrolein, a ahydrophobic, polytetrafluoroethylene, polystyrene and silica gel.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: February 1, 1994
    Assignee: Development Center for Biotechnology
    Inventors: Jiuan J. Liu, Chun-Chieh Wang, Yuang-Ling Hwang, Tong H. Chang