Patents by Inventor Robert J. Rafka

Robert J. Rafka 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: 20040266832
    Abstract: The invention concerns crystalline forms of 2-(3-difluromethyl-5-phenyl-pyrazol-1-yl)-5-methanesulfonyl-pyridine, their preparation and use in pharmaceuticals.
    Type: Application
    Filed: June 24, 2004
    Publication date: December 30, 2004
    Inventors: Zheng J. Li, Robert J. Rafka, David H. B. Ripin, Michael J. Castaldi
  • 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
  • Patent number: 6007848
    Abstract: Low calorie food products that contain highly crystalline bulking agents that impart improved texture and mouthfeel to the food products are described. The food products contain 1,4-anhydroglucitol or 1,4-anhydrogalactitol and a food ingredient. A method of preparing 1,4-anhydro-DL-galactitol comprising heating galactitol in a water-immiscible, high-boiling, reaction-inert medium in the presence of a mineral acid is also described.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: December 28, 1999
    Assignee: Cultor Ltd.
    Inventors: Michael E. Hendrick, deceased, Barry J. Morton, Robert J. Rafka
  • Patent number: 4954531
    Abstract: A novel method for altering the food intake of a mammal is diclosed wherein 2,5-anhydro-D-mannito (2,5-AM) is administered to that mammal in an amount sufficient to alter its food intake. Preferably, normal feeding and fasting periods, and most preferably diurnal feeding and fasting periods, are identified. The mammal receives an intragastric, or intraperitoneal, or intravenous administration within two hours in advance of the onset of the feeding period to decrease food intake, or within two hours of the onset of the fasting period to increase intake. The subject mannitol is preferably administered in amounts of 50-800 mg/kg, although neither the low limit of sufficiency nor the upper limit of activity have yet to be identified.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: September 4, 1990
    Assignee: Monell Chemical Senses Center
    Inventors: Mark I. Friedman, Michael G. Tordoff, Michael J. DiNovi, Robert J. Rafka
  • Patent number: 4871776
    Abstract: A novel fructose analog is disclosed which has been found to modify the food intake of mammals. If administered during the diurnal fasting period, the mammals increase their food intakes. If administered during the diurnal feeding period, food intake is decreased. The compound is 2,5-anhydro-1,6-dihalo-1,6-dideoxy-D-mannitol, preferably 2,5-anhydro-1,6-dichloro-dideoxy-D-mannitol ("Charmitol").
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: October 3, 1989
    Assignee: Monell Chemical Senses Center
    Inventors: Michael J. DiNovi, Robert J. Rafka, Mark I. Friedman, Michael G. Tordoff
  • Patent number: 4808626
    Abstract: A novel method for altering the food intake of a mammal is disclosed wherein 2,5-anhydro-D-mannitol (2,5-AM) is administered to that mammal in an amount sufficient to alter its food intake. Preferably, normal feeding and fasting periods, and most preferably diurnal feeding and fasting periods, are identified. The mammal receives an intragastric, or intraperitoneal, or intravenous administration within two hours in advance of the onset of the feeding period to decrease food intake, or within two hours of the onset of the fasting period to increase intake. The subject mannitol is preferably administered in amounts of 50-800 mg/kg, although neither the lower limit of sufficiently nor the upper limit of activity have yet to be identified.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: February 28, 1989
    Assignee: Monell Chemical Senses Center
    Inventors: Mark I. Friedman, Michael G. Tordoff, Michael J. DiNovi, Robert J. Rafka