Patents by Inventor Qingnong Tang

Qingnong Tang 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).

  • Simmondsin processing methods and products
    Patent number: 6858233
    Abstract: The invention provides a process for reducing odour, bitterness, astringency and pungency of a Simmondsins extract by dissolving the Simmondsins extract in a solvent if the Simmondsins extract is in a dry form, reacting the liquid Simmondsins extract with a carbonaceous adsorbent, such as activated carbon, to obtain a mixture, separating the adsorbent from the mixture to obtain a purified liquid extract, and drying the purified liquid extract.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: February 22, 2005
    Assignee: International Flora Technologies, Ltd.
    Inventors: Qingnong Tang, James Howard Brown, Wenhui Fu
  • Simmondsin processing methods and products
    Publication number: 20040037908
    Abstract: The invention provides a process for reducing odour, bitterness, astringency and pungency of a Simmondsins extract by dissolving the Simmondsins extract in a solvent if the Simmondsins extract is in a dry form, reacting the liquid Simmondsins extract with a carbonaceous adsorbent, such as activated carbon, to obtain a mixture, separating the adsorbent from the mixture to obtain a purified liquid extract, and drying the purified liquid extract.
    Type: Application
    Filed: July 3, 2003
    Publication date: February 26, 2004
    Applicant: International Flora Technologies, Ltd.
    Inventors: Qingnong Tang, James Howard Brown, Wenhui Fu
  • Simmondsin processing methods and products
    Patent number: 6620442
    Abstract: The invention provides a process for reducing odor, bitterness, astringency and pungency of a Simmondsins extract by dissolving the Simmondsins extract in a solvent if the Simmondsins extract is in a dry form, reacting the liquid Simmondsins extract with a carbonaceous adsorbent, such as activated carbon, to obtain a mixture, separating the adsorbent from the mixture to obtain a purified liquid extract, and drying the purified liquid extract.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: September 16, 2003
    Assignee: International Flora Technologies, Inc.
    Inventors: Qingnong Tang, James Howard Brown, Wenhui Fu
  • Methods and apparatus for recovering zein from corn
    Patent number: 6610831
    Abstract: Methods and apparatus for recovering zein from substrates are disclosed. The method includes extracting a zein-containing substrate such as whole corn with ethanol to yield a crude zein alcoholic dispersion and treating this dispersion with an adsorbent to remove at least one of starch, color or oil to yield a purified zein which is subsequently recovered or used in industrial applications. A preferred adsorbent is activated charcoal.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: August 26, 2003
    Assignee: Lurgi PSI, Ltd.
    Inventors: Jerel McInnis, Qingnong Tang
  • Extraction of zein protein from gluten meal
    Patent number: 6602985
    Abstract: Zein is recovered from gluten meal prepared by wet milling procedures by washing the gluten with clean water to remove water-soluble components; separating the water-soluble components and recovering the water-insoluble components; extracting the water insoluble components with hydrous ethanol solvent to extract zein; recovering the crude zein extract; treating the crude zein extract with an adsorbent that adsorbs at least one of color, odor, oil and fatty acid; and to yield a purified zein extract.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: August 5, 2003
    Assignee: Lurgi PSI, Inc.
    Inventors: Jerel McInnis, Qingnong Tang
  • Simmondsin processing methods and products
    Publication number: 20030044477
    Abstract: The invention provides a process for reducing odour, bitterness, astringency and pungency of a Simmondsins extract by dissolving the Simmondsins extract in a solvent if the Simmondsins extract is in a dry form, reacting the liquid Simmondsins extract with a carbonaceous adsorbent, such as activated carbon, to obtain a mixture, separating the adsorbent from the mixture to obtain a purified liquid extract, and drying the purified liquid extract.
    Type: Application
    Filed: August 24, 2001
    Publication date: March 6, 2003
    Inventors: Qingnong Tang, James Howard Brown, Wenhui Fu