Patents by Inventor Changzhi Chen

Changzhi Chen 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).

  • Method for preparing a carbonized resin DNA immunoadsorbent
    Patent number: 6262172
    Abstract: A method for preparing a carbonized resin DNA immunoadsorbent, which uses styrene, acrylonitrile, divinylbenzene, toluene, liquid paraffin, benzoyl peroxide and water solution of polyvinyl alcohol as raw materials, produces a DNA immunoadsorbent with 0.3-0.5 mg DNA per milliliter of resin using two-staged procedures for preparation of first carbonized resin, and secondly carbonized resin DNA immunoadsorbent. The resultant immunoadsorbent is high in adsorbent capacity, low in production cost, and can be synthesized without pyrogens. It therefore satisfies the demands of medical application for the treatment of systemic lupus erythematosus by immunoadsorption.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: July 17, 2001
    Assignee: Nankai University
    Inventors: Yaoting Yu, Changzhi Chen, Deling Kong