Patents by Inventor Colman B. Ragan

Colman B. Ragan 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: 7297682
    Abstract: This invention relates to a novel crystalline diphosphate salt of (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[2,6-dideoxy-3-C-methyl-3-O-methyl-4-C-[(propylamino)methyl]-?-L-ribo-hexopryanosyl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-?-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one that is useful as an antibacterial and antiprotozoal agent in mammals. This invention also relates to pharmaceutical compositions containing the free base of the diphosphate salt and the methods of treating bacterial and protozoal infections in mammals by administering the free base of the diphosphate to mammals requiring such treatment. The free base of the diphosphate salt of the present invention possesses potent activity against various bacterial and protozoal infections when given by parenteral application to mammals.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: November 20, 2007
    Assignees: Pfizer Inc., Pfizer Products Inc.
    Inventors: Robert J. Rafka, Colman B. Ragan, Douglas J. M. Allen
  • Patent number: 6861412
    Abstract: This invention relates to a novel crystalline diphosphate salt of (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[2,6-dideoxy-3-C-methyl-3-o-methyl-4-C-[(propylamino)methyl]-?-L-ribo-hexopryanosyl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-?-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one that is useful as an antibacterial and antiprotozoal agent in mammals. This invention also relates to pharmaceutical compositions containing the free base of the diphosphate salt and the methods of treating bacterial and protozoal infections in mammals by administering the free base of the diphosphate to mammals requiring such treatment. The free base of the diphosphate salt of the present invention possesses potent activity against various bacterial and protozoal infections when given by parenteral application to mammals.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: March 1, 2005
    Assignee: Pfizer, Inc.
    Inventors: Robert J. Rafka, Colman B. Ragan, Douglas J. M. Allen
  • Publication number: 20040209826
    Abstract: This invention relates to a novel crystalline diphosphate salt of (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[2,6-dideoxy-3-C-methyl-3-O-methyl-4-C-[(propylamino)methyl]-&agr;-L-ribo-hexopryanosyl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-&bgr;-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one that is useful as an antibacterial and antiprotozoal agent in mammals. This invention also relates to pharmaceutical compositions containing the free base of the diphosphate salt and the methods of treating bacterial and protozoal infections in mammals by administering the free base of the diphosphate to mammals requiring such treatment. The free base of the diphosphate salt of the present invention possesses potent activity against various bacterial and protozoal infections when given by parenteral application to mammals.
    Type: Application
    Filed: May 6, 2004
    Publication date: October 21, 2004
    Inventors: Robert J. Rafka, Colman B. Ragan, Douglas J.M. Allen
  • Patent number: 6583274
    Abstract: Novel crystalline forms of a compound of Formula 1 are disclosed: Also disclosed are pharmaceutical compositions comprising these forms, and methods of their preparation and use.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: June 24, 2003
    Assignee: Pfizer Inc.
    Inventors: Douglas J. M. Allen, Barry J. Morton, Robert J. Rafka, Colman B. Ragan
  • Publication number: 20030092642
    Abstract: This invention relates to a novel crystalline diphosphate salt of (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[2,6-dideoxy-3-C-methyl-3-0-methyl-4-C-[(propylamino)methyl]-&agr;-L-ribo-hexopryanosyl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-&bgr;-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one that is useful as an antibacterial and antiprotozoal agent in mammals. This invention also relates to pharmaceutical compositions containing the free base of the diphosphate salt and the methods of treating bacterial and protozoal infections in mammals by administering the free base of the diphosphate to mammals requiring such treatment. The free base of the diphosphate salt of the present invention possesses potent activity against various bacterial and protozoal infections when given by parenteral application to mammals.
    Type: Application
    Filed: August 12, 2002
    Publication date: May 15, 2003
    Inventors: Robert J. Rafka, Colman B. Ragan, Douglas J. M. Allen
  • Patent number: 6465437
    Abstract: This invention relates to a novel crystalline diphosphate salt of (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[2,6-dideoxy-3-C-methyl-3-O-methyl-4-C-[(propylamino)methyl]-&agr;-L-ribo-hexopryanosyl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-&bgr;-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one that is useful as an antibacterial and antiprotozoal agent in mammals. This invention also relates to pharmaceutical compositions containing the free base of the diphosphate salt and the methods of treating bacterial and protozoal infections in mammals by administering the free base of the diphosphate to mammals requiring such treatment. The free base of the diphosphate salt of the present invention possesses potent activity against various bacterial and protozoal infections when given by parenteral application to mammals.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: October 15, 2002
    Assignee: Pfizer Inc.
    Inventors: Robert J. Rafka, Colman B. Ragan, Douglas J. M. Allen
  • Patent number: 6329345
    Abstract: The invention relates to a method of preparing compounds of the formula 1 and to pharmaceutically acceptable salts thereof. The compounds of formula 1 are antibacterial agents that may be used to treat various bacterial and protozoa infections. The invention also relates to pharmaceutical compositions containing the compounds of formula 1 and to methods of treating bacterial protozoa infections by administering the compounds of formula 1. The invention also relates to methods of preparing the compounds of formula 1 and to intermediates useful in such preparation.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: December 11, 2001
    Assignee: Pfizer Inc
    Inventors: Robert J. Rafka, Barry J. Morton, Colman B. Ragan, Peter Bertinato, John P. Dirlam, Alan E. Blize, Carl B. Ziegler