Patents by Inventor Huiqing ZANG

Huiqing ZANG 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 separation and purification of long-chain diacids
    Patent number: 8729298
    Abstract: A method for the separation and purification of at least one long-chain diacid, comprising: introducing an impure preparation comprising at least one long-chain diacid to a stationary phase of a chromatograph; and eluting the at least one long-chain diacid from the stationary phase with at least one eluent.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: May 20, 2014
    Assignee: Cathay Industrial Biotech Ltd.
    Inventors: Huiqing Zang, Guang Lei, Bingbing Qin
  • METHOD FOR SEPARATION AND PURIFICATION OF LONG-CHAIN DIACIDS
    Publication number: 20120253069
    Abstract: A method for the separation and purification of at least one long-chain diacid, comprising: introducing an impure preparation comprising at least one long-chain diacid to a stationary phase of a chromatograph; and eluting the at least one long-chain diacid from the stationary phase with at least one eluent.
    Type: Application
    Filed: February 13, 2012
    Publication date: October 4, 2012
    Inventors: Huiqing ZANG, Guang Lei, Bingbing Qin