Patents by Inventor Ralph Calabria

Ralph Calabria 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).

  • Process for making chloro-substituted nucleoside phosphoramidate compounds
    Patent number: 10214554
    Abstract: The present invention is directed to a process for making Chloro-Substituted Nucleoside Phosphoramidate Compounds of formula (I): which are useful for the treatment and prophylaxis of HCV infection. The present invention is also directed to compounds that are useful as synthetic intermediates for making the compounds of formula (I).
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: February 26, 2019
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Amude Kassim, John Limanto, Michael Shevlin, Peter E. Maligres, Daniel A. DiRocco, James F. Dropinski, Rose Mathew, Yi Ning Ji Chen, Edward C. Sherer, Mikhail Reibarkh, Artis Klapars, Alan Hyde, Susan L. Zultanski, Aaron Moment, Bryon Simmons, Tyler A. Davis, Timothy James Wright, Ralph Calabria, Louis charles Campeau
  • PROCESS FOR MAKING CHLORO-SUBSTITUTED NUCLEOSIDE PHOSPHORAMIDATE COMPOUNDS
    Publication number: 20170226146
    Abstract: The present invention is directed to a process for making Chloro-Substituted Nucleoside Phosphoramidate Compounds of formula (I): which are useful for the treatment and prophylaxis of HCV infection. The present invention is also directed to compounds that are useful as synthetic intermediates for making the compounds of formula (I).
    Type: Application
    Filed: February 8, 2017
    Publication date: August 10, 2017
    Inventors: John Y.L. Chung, Amude Kassim, John Limanto, Michael Shevlin, Peter E. Maligres, Daniel A. DiRocco, James F. Dropinski, Rose Mathew, Yi Ning Ji Chen, Edward C. Sherer, Mikhail Reibarkh, Artis Klapars, Alan Hyde, Susan L. Zultanski, Aaron Moment, Bryon Simmons, Tyler A. Davis, Timothy James Wright, Ralph Calabria, Louis Charles Campeau
  • Crystalline forms of MC4R agonist and process for synthesis
    Patent number: 8129413
    Abstract: The present invention relates to a process for producing N-{(1S)-1-[2-(1-{[(3S,4R)-1-tert-butyl-4-(2,4-difluorophenyl)pyrrolidin-3-yl]carbonyl}piperidin-4-yl)-5-chlorophenyl]ethyl}acetamide, and novel crystalline salts, hydrates, solvates, and polymorphic forms thereof.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: March 6, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Ralph Calabria, Yu Cheng, Russell R. Ferlita, Ashkan Kamali, Jerry A. Murry, David Mathre, Andrey V. Peresypkin, Karen Thompson, Jian Wang, Robert M. Wenslow
  • Crystalline forms of mc4r agonist and process for synthesis
    Publication number: 20090233967
    Abstract: The present invention relates to a process for producing N-{(1S)-1-[2-(1-{[(3S,4R)-1-tert-butyl-4-(2,4-difluorophenyl)pyrrolidin-3-yl]carbonyl}piperidin-4-yl)-5-chlorophenyl]ethyl}acetamide, and novel crystalline salts, hydrates, solvates, and polymorphic forms thereof.
    Type: Application
    Filed: June 23, 2006
    Publication date: September 17, 2009
    Inventors: Ralph Calabria, Yu Cheng, Russell R. Ferlita, Ashkan Kamali, Jerry A. Murry, David Mathre, Andrey V. Peresypkin, Karen Thompson, Jian Wang, Robert M. Wenslow
  • Process for solubilizing polyanoinic bacterial polysaccharides in aprotic solvents
    Patent number: 4963534
    Abstract: A process for rendering a bacterial polysaccharide soluble in aprotic solvents by exchanging the calcium counterion of a polysaccharide calcium salt for tetra-n-alkylammonium ion by precipitation.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: October 16, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Ralph Calabria, Frederick W. Hartner, John T. Sisko