Patents by Inventor Carl B. Ziegler

Carl B. Ziegler 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: 9034913
    Abstract: Processes for annealing amorphous atorvastatin is described. Pharmaceutical compositions and formulations containing annealed amorphous atorvastatin are also described.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: May 19, 2015
    Assignee: Pfizer Inc.
    Inventors: Renuka D. Reddy, Evgenyi Shalaev, Ravi M. Shanker, Carl B. Ziegler
  • Patent number: 8686163
    Abstract: A process for forming amorphous atorvastatin comprising the steps of dissolving atorvastatin in a non-hydroxylic solvent and removing the solvent by freeze-drying, as well as processes of dissolving atorvastatin in a hydroxylic solvent with a solubilizing agent or an alkalizing agent or an antioxidant and removing the solvent by freeze-drying to afford amorphous atorvastatin.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: April 1, 2014
    Assignee: Pfizer Inc.
    Inventors: Antone J deBettencourt, III, Evgenyi Shalaev, George J. Quallich, Carl B. Ziegler, Jr.
  • Publication number: 20120289576
    Abstract: A process for forming amorphous atorvastatin comprising the steps of dissolving atorvastatin in a non-hydroxylic solvent and removing the solvent by freeze-drying, as well as processes of dissolving atorvastatin in a hydroxylic solvent with a solubilizing agent or an alkalizing agent or an antioxidant and removing the solvent by freeze-drying to afford amorphous atorvastatin.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 15, 2012
    Inventors: Antone J deBettencourt, III, Peter R. Rose, Evgenyi Shalaev, George J. Quallich, Carl B. Ziegler, JR.
  • Patent number: 8258315
    Abstract: A process for forming amorphous atorvastatin comprising the steps of dissolving atorvastatin in a non-hydroxylic solvent and removing the solvent by freeze-drying, as well as processes of dissolving atorvastatin in a hydroxylic solvent with a solubilizing agent or an alkalizing agent or an antioxidant and removing the solvent by freeze-drying to afford amorphous atorvastatin.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: September 4, 2012
    Assignee: Pfizer Inc.
    Inventors: Antone J deBettencourt, III, Peter R. Rose, Evgenyi Shalaev, George J. Quallich, Carl B. Ziegler, Jr.
  • Publication number: 20110237642
    Abstract: A process for forming amorphous atorvastatin comprising the steps of dissolving atorvastatin in a non-hydroxylic solvent and removing the solvent by freeze-drying, as well as processes of dissolving atorvastatin in a hydroxylic solvent with a solutilizing agent or an alkalizing agent or an antioxidant and removing the solvent by freeze-drying to afford amorphous atorvastatin.
    Type: Application
    Filed: April 4, 2011
    Publication date: September 29, 2011
    Inventors: Antone J. deBettencourt, III, Peter R. Rose, Evgenyi Shalaev, George J. Quallich, Carl B. Ziegler, JR.
  • Publication number: 20090221667
    Abstract: Processes for annealing amorphous atorvastatin is described. Pharmaceutical compositions and formulations containing annealed amorphous atorvastatin are also described.
    Type: Application
    Filed: September 11, 2006
    Publication date: September 3, 2009
    Inventors: Renuka D. Reddy, Evgenyi Shalaev, Ravi M. Shanker, Carl B. Ziegler
  • 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: 6043227
    Abstract: This invention relates to compounds of the formula ##STR1## and to pharmaceutically acceptable salts thereof. The compounds of formula 1 are potent antibacterial agents that may be used to treat various bacterial infections and disorders related to such infections. The invention also relates to pharmaceutical compositions containing the compounds of formula 1 and to methods of treating bacterial 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: May 26, 1999
    Date of Patent: March 28, 2000
    Assignee: Pfizer Inc.
    Inventors: Hengmiao Cheng, Michael Letavic, Carl B. Ziegler, Jr., Jason K. Dutra, Peter Bertinato, Brian S. Bronk
  • Patent number: 5623081
    Abstract: Tetrahydrofuanyl compounds of the following formulae: ##STR1## are disclosed.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: April 22, 1997
    Inventors: Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush, Carl B. Ziegler, Gregg B. Feigelson
  • Patent number: 5602118
    Abstract: Carbapenem antibiotic compounds of the general formula: ##STR1## wherein the moiety ##STR2## is a 4, 5 or 6 membered mono, di- or tri- substituted oxygen or sulfur containing ring; wherein Z is oxygen, sulfur, sulfoxide and sulfone, pharmaceutical compositions thereof useful for the treatment of bacterial infections, processes for preparing the compounds and new intermediates useful in the process.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: February 11, 1997
    Assignee: American Cyanamid Company
    Inventors: Yang-I Lin, Panayota Bitha, Subas Sakya, Timothy W. Strohmeyer, Karen Bush, Carl B. Ziegler, Gregg B. Feigelson
  • Patent number: 5480987
    Abstract: The invention provides substituted allylazetidinone compounds having the formula: ##STR1## and propargyl azetidinone compounds having the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.30, X, Y and Q are defined in the specification.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: January 2, 1996
    Assignee: American Cyanamid Company
    Inventors: Carl B. Ziegler, Jr., William V. Curran, Gregg Feigelson
  • Patent number: 5371215
    Abstract: New 4-substituted azetidinones having the formulae I and II: ##STR1## wherein X is oxygen, sulfur or a moiety of the formula NR.sup.6 where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are defined hereafter, which are intermediates for the preparation of carbapenem and carbacephem antibacterials and processes for producing such antibacterials through the utilization of an acid mediated ring closure reaction.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 6, 1994
    Assignee: American Cyanamid Company
    Inventors: Gregg B. Feigelson, William V. Curran, Carl B. Ziegler
  • Patent number: 5369102
    Abstract: The invention relates to new 2-substituted alkyl-3-carboxy carbapenems having the formula: ##STR1## with R.sup.1, R.sup.2, R.sup.3, X and Y defined hereafter as antibiotics and beta lactamase inhibitors produced by a novel Michael addition-elimination reaction of a substituted allyl azetidinone in the reaction shown: ##STR2## with R.sup.1, R.sup.2, Q, X and Y defined hereafter.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: November 29, 1994
    Assignee: American Cyanamid Company
    Inventors: Carl B. Ziegler, Jr., William V. Curran, Gregg Feigelson
  • Patent number: 5210193
    Abstract: 7-(substituted)piperazinyl-1-ethyl-6-fluoro-4-oxo-3-quinolinecarboxylic acids, the pharmacologically acceptable salts thereof, compositions containing them, processes and intermediates for producing them, and methods of using them to treat bacterial infections in warm-blooded animals.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: May 11, 1993
    Assignee: American Cyanamid Company
    Inventors: Phaik-Eng Sum, Joseph P. Joseph, Carl B. Ziegler, Jr., Daniel B. Moran, Yang-I Lin
  • Patent number: 5189158
    Abstract: New 4-substituted azetidinones having the formulea I and II: ##STR1## with R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and X defined hereafter, which are intermediates for the preparation of carbapenem and carbacephem antibacterials and processes for producing such antibacterials through the utilization of an acid mediated ring closure reaction.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: February 23, 1993
    Assignee: American Cyanamid Company
    Inventors: Gregg B. Feigelson, William V. Curran, Carl B. Ziegler
  • Patent number: 5068232
    Abstract: The invention relates to new 2-substituted alkyl-3-carboxy carbapenems having the formula: ##STR1## with R.sup.1, R.sup.2, R.sup.3, X and Y defined hereafter as antibiotics and beta lactamase inhibitors produced by a novel Michael addition-elimination reaction of a substituted allyl azetidinone in the reaction shown: ##STR2## with R.sup.1, R.sup.2, Q, X and Y defined hereafter.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: November 26, 1991
    Assignee: American Cyanamid Company
    Inventors: Carl B. Ziegler, Jr., William V. Curran, Gregg Feigelson
  • Patent number: 4948894
    Abstract: Novel substituted quinolinecarboxylic acid derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen, alkali metal, alkaline earth metal or lower alkyl; R.sub.2 is hydrogen, benzyl or alkyl (C.sub.1 -C.sub.3); X is hydrogen or fluoro; which have antibacterial activity, intermediates useful in the preparation of the compounds, methods of producing and using the compounds to treat bacterial infections in animals.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: August 14, 1990
    Assignee: American Cyanamid Company
    Inventors: Daniel B. Moran, Yang-I Lin, Carl B. Ziegler
  • Patent number: 4940710
    Abstract: 7-(substituted)piperazinyl-1-ethyl-6-fluoro-4-oxo-3-quinolinecarboxylic acids, the pharmacologically acceptable salts thereof, compositions containing them, processes and intermediates for producing them, and methods of using them to treat bacterial infections in warm-blooded animals.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: July 10, 1990
    Assignee: American Cyanamid Company
    Inventors: Phaik-Eng Sum, Joseph P. Joseph, Carl B. Ziegler, Jr., Daniel B. Moran, Yang-I Lin
  • Patent number: 4923868
    Abstract: Novel substituted quinolinecarboxylic acid derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen, alkali metal, alkaline earth metal or lower alkyl; R.sub.2 is hydrogen, benzyl or alkyl(C.sub.1 -C.sub.3); X is hydrogen or fluoro; which have antibacterial activity, intermediates useful in the preparation of the compounds, methods of producing and using the compounds to treat bacterial infections in animals.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 8, 1990
    Assignee: American Cyanamid Company
    Inventors: Daniel B. Moran, Yang-I Lin, Carl B. Ziegler
  • Patent number: 4464304
    Abstract: A nucleophile substituted unsaturated hydrocarbon based compound is prepared by reacting a compound of the formula: ##STR1## wherein R and R' are hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, aralkyl, alkoxyalkyl, alkoxy, alkylthioalkyl, or carboxyalkyl or carboxyalkenyl and X is a leaving group selected from the group consisting of chlorine, bromine, and iodine with a nucleophilic reagent.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: August 7, 1984
    Assignee: Duke University
    Inventors: Ned A. Porter, Carl B. Ziegler, Jr., David H. Roberts