Patents by Inventor Xiangjing Xu

Xiangjing Xu 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).

  • Biocidal cellulosic material
    Patent number: 6770287
    Abstract: The present invention provides, inter alia, durable and renewable biocidal wooden materials for safe food contact items, such as cutting boards and containers, to be used in home kitchens and the food processing industries. The biocidal food contact surfaces of the present invention reduce and eliminate cross-contamination of diseases and make the surfaces or wood cutting boards safer to use. The biocidal materials inactivate any microorganisms that are deposited and prevent the materials from building up biofilms.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: August 3, 2004
    Assignee: The Regents of the University of California
    Inventors: Gang Sun, Xiangjing Xu, Dean Cliver
  • Processes for preparing microbiocidal textiles
    Patent number: 6077319
    Abstract: The present invention provides durable and regenerable microbiocidal textiles and methods for preparing same. Such textiles can be readily prepared using a wet finishing process to covalently attach a hetercyclic N-halamine to a cellulose based material or other polymeric material. Once prepared, the textiles of the present invention have a broad spectrum of biocidal activity against pathogenic microorganisms. Moreover, the biocidal activity of such textiles can be regenerated by washing with a halogenated solution.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: June 20, 2000
    Assignee: The Regents of The University of California
    Inventors: Gang Sun, Xiangjing Xu
  • Durable and regenerable microbiocidal textiles
    Patent number: 5882357
    Abstract: The present invention provides, inter alia, durable and regenerable microbiocidal textiles and methods for preparing same. Such textiles can be readily prepared using a wet finishing process to covalently attach a hetercyclic N-halamine to a cellulose based material or other polymeric material. Once prepared, the textiles of the present invention have a broad spectrum of biocidal activity against pathogenic microorganisms. Moreover, the biocidal activity of such textiles can be regenerated by washing with a halogenated solution.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 16, 1999
    Assignee: The Regents of The University of California
    Inventors: Gang Sun, Xiangjing Xu