Patents by Inventor Karin Keller

Karin Keller 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: 6683103
    Abstract: Thienylsulfonamides and their pharmaceutically acceptable derivatives, pharmaceutical compositions, articles of manufacture, combinations, lyophilized powders and methods for the treatment of endothelin diseases using these formulations and sulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 27, 2004
    Assignee: Texas Biotechnology Corporation
    Inventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller
  • Patent number: 6458805
    Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)-thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)-pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: October 1, 2002
    Assignee: Texas Biotechnology Corporation
    Inventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
  • Patent number: 6432994
    Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, pharmaceutically-acceptable salts of sulfonamides, formulations of salts and the sulfonamides, and methods for modulating or altering the activity of the endothelin family of peptides using the formulations and sulfonamides are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: August 13, 2002
    Assignee: Texas Biotechnology Corporation
    Inventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller, Patricia Woodard
  • Publication number: 20020091270
    Abstract: Thienylsulfonamides and their pharmaceutically acceptable derivatives, pharmaceutical compositions, articles of manufacture, combinations, lyophilized powders and methods for the treatment of endothelin diseases using these formulations and sulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
    Type: Application
    Filed: December 20, 2001
    Publication date: July 11, 2002
    Inventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller, Patricia Woodard
  • Publication number: 20010039289
    Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)-thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)-pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 8, 2001
    Inventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
  • Patent number: 6248767
    Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: June 19, 2001
    Assignee: Texas Biotechnology Corp.
    Inventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
  • Patent number: 5783705
    Abstract: A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: July 21, 1998
    Assignee: Texas Biotechnology Corporation
    Inventors: Natalie Blok, Chengde Wu, Karin Keller, Timothy P. Kogan
  • Patent number: 5444050
    Abstract: This invention relates to compounds that inhibit the binding of E-selectin and/or P-selectin to sialyl-Lewis.sup.x or sialyl-Lewis.sup.a presented on a cell surface having the general structure ##STR1## wherein X is selected from the group consisting of --(CH.sub.2).sub.n CO.sub.2 H, --O(CH.sub.2).sub.m CO.sub.2 H, --(CH.sub.2).sub.n O(CH.sub.2).sub.m CO.sub.2 H, --CONH(CH.sub.2).sub.m CO.sub.2 H, --CH(OZ)(CO.sub.2 H), --CH(Z)(CO.sub.2 H), --(CH.sub.2).sub.n SO.sub.3 H, --(CH.sub.2).sub.n PO.sub.3 D.sub.1 D.sub.2, --NH(CH.sub.2).sub.m CO.sub.2 H, --CONH(CHR.sub.6)CO.sub.2 H, (1-H-tetrazolyl-5-alkyl-), and --OH;R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, alkyl, halogen, --OZ, --NO.sub.2, --NH.sub.2 and --NHZ;R.sub.3 is selected from the group consisting of hydrogen, halogen, alkyl, --OZ and --NHZ;R.sub.4 is selected from the group consisting of hydrogen, halogen, alkyl, hydroxyl, hydroxyl-O-sulfate and --OZ;R.sub.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: August 22, 1995
    Assignee: Texas Biotechnology Corporation
    Inventors: Timothy P. Kogan, Brian Dupre, Ian L. Scott, Karin Keller, Huong Dao, Pamela J. Beck