Patents by Inventor Ling Xia

Ling Xia 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: 7030105
    Abstract: The invention provides a method for preparing glutathionylcobalamin (GluSCbl) which involves running the reaction in an aqueous solvent with a relatively small excess of glutathione, i.e. GluSH, specifically from one to less than four molar equivalents of GluSH. The formed GluSCbl is precipitated from the aqueous solvent, preferably by the addition of a precipitate inducing solvent. This provides GluSCbl in acceptable purity without the need for an additional chromatographic purification step. Additionally, it has been found that the reaction can be run to an acceptable level of purity by using very high concentrations of the reactants, i.e. around saturation concentrations for aquocobalamin. This has the advantage of eliminating the need for air-free conditions.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: April 18, 2006
    Assignee: Kent State University
    Inventors: Nicola E. Brasch, Ling Xia
  • Publication number: 20050176816
    Abstract: The present invention relates to compounds of the general formula: NO2-A-B wherein A is a saturated or unsaturated hydrocarbon chain of 14-26 carbon atoms and B is (CH2)n(COOH)m in which n is an integer from 0 to 2 and m is an integer from 0 to 2; or of general formula (I), wherein A? is a saturated or unsaturated hydrocarbon chain of 9-26 carbon atoms, X is oxygen or is absent and B? is (CH2)j(COOH)k in which j is an integer from 1 to 3 and k is 0 or 1; and the derivatives thereof in which the hydrocarbon chain includes one or more than one substitution selected from the group consisting of hydroxy, hydroperoxy, epoxy and peroxy. These compounds have biological activity, e.g. as anti-infective or anti-inflammatory agents.
    Type: Application
    Filed: March 4, 2005
    Publication date: August 11, 2005
    Inventors: Antonio Ferrante, Christopher Easton, Ling Xia
  • Publication number: 20050176815
    Abstract: The present invention relates to compounds of the general formula: NO2-A-B wherein A is a saturated or unsaturated hydrocarbon chain of 14-26 carbon atoms and B is (CH2)n(COOH)m in which n is an integer from 0 to 2 and m is an integer from 0 to 2; or of general formula (I), wherein A? is a saturated or unsaturated hydrocarbon chain of 9-26 carbon atoms, X is oxygen or is absent and B? is (CH2)j(COOH)k in which j is an integer from 1 to 3 and k is 0 or 1; and the derivatives thereof in which the hydrocarbon chain includes one or more than one substitution selected from the group consisting of hydroxy, hydroperoxy, epoxy and peroxy. These compounds have biological activity, e.g. as anti-infective or anti-inflammatory agents.
    Type: Application
    Filed: March 4, 2005
    Publication date: August 11, 2005
    Inventors: Antonio Ferrante, Christopher Easton, Ling Xia
  • Publication number: 20050176817
    Abstract: The present invention relates to compounds of the general formula: NO2-A-B wherein A is a saturated or unsaturated hydrocarbon chain of 14-26 carbon atoms and B is (CH2)n(COOH)m in which n is an integer from 0 to 2 and m is an integer from 0 to 2; or of general formula (I), wherein A? is a saturated or unsaturated hydrocarbon chain of 9-26 carbon atoms, X is oxygen or is absent and B? is (CH2)j(COOH)k in which j is an integer from 1 to 3 and k is 0 or 1; and the derivatives thereof in which the hydrocarbon chain includes one or more than one substitution selected from the group consisting of hydroxy, hydroperoxy, epoxy and peroxy. These compounds have biological activity, e.g. as anti-infective or anti-inflammatory agents.
    Type: Application
    Filed: March 4, 2005
    Publication date: August 11, 2005
    Inventors: Antonio Ferrante, Christopher Easton, Ling Xia
  • Patent number: 6924309
    Abstract: The present invention relates to compounds of the general formula: NO2-A-B wherein A is a saturated or unsaturated hydrocarbon chain of 14-26 carbon atoms and B is (CH2)n(COOH)m in which n is an integer from 0 to 2 and m is an integer from 0 to 2; or of general formula (I), wherein A? is a saturated or unsaturated hydrocarbon chain of 9-26 carbon atoms, X is oxygen or is absent and B? is (CH2)j(COOH)k in which j is an integer from 1 to 3 and k is 0 or 1; and the derivatives thereof in which the hydrocarbon chain includes one or more than one substitution selected from the group consisting of hydroxy, hydroperoxy, epoxy and peroxy. These compounds have biological activity, e.g. as anti-infective or anti-inflammatory agents.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: August 2, 2005
    Assignees: Children, Youth and Women's Health Service Incorporated, Peptech Limited
    Inventors: Antonio Ferrante, Christopher J. Easton, Ling Xia
  • Publication number: 20040054128
    Abstract: The invention provides a method for preparing glutathionylcobalamin (GluSCbl) which involves running the reaction in an aqueous solvent with a relatively small excess of glutathione, i.e. GluSH, specifically from one to less than four molar equivalents of GluSH. The formed GluSCbl is precipitated from the aqueous solvent, preferably by the addition of a precipitate inducing solvent. This provides GluSCbl in acceptable purity without the need for an additional chromatographic purification step. Additionally, it has been found that the reaction can be run to an acceptable level of purity by using very high concentrations of the reactants, i.e. around saturation concentrations for aquocobalamin. This has the advantage of eliminating the need for air-free conditions.
    Type: Application
    Filed: May 6, 2003
    Publication date: March 18, 2004
    Inventors: Nicola E. Brasch, Ling Xia
  • Publication number: 20030092762
    Abstract: The present invention relates to compounds of the general formula: NO2-A-B wherein A is a saturated or unsaturated hydrocarbon chain of 14-26 carbon atoms and B is (CH2)n(COOH)m in which n is an integer from 0 to 2 and m is an integer from 0 to 2; or of general formula (I), wherein A′ is a saturated or unsaturated hydrocarbon chain of 9-26 carbon atoms, X is oxygen or is absent and B′ is (CH2)j(COOH)k in which j is an integer from 1 to 3 and k is 0 or 1; and the derivatives thereof in which the hydrocarbon chain includes one or more than one substitution selected from the group consisting of hydroxy, hydroperoxy, epoxy and peroxy. These compounds have biological activity, e.g. as anti-infective or anti-inflammatory agents.
    Type: Application
    Filed: March 18, 2002
    Publication date: May 15, 2003
    Inventors: Antonio Ferrante, Christopher J. Easton, Ling Xia