Patents by Inventor Richard A. Silva

Richard A. Silva 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: 8940776
    Abstract: A compound is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The subject has type 2 diabetes; renal hypertrophy or hyperplasia associated with diabetic nephropathy; Tay-Sachs; Gaucher's; or Fabry's disease. Methods of decreasing plasma TNF-?, lowering blood glucose levels, decreasing glycated hemoglobin levels, inhibiting glucosylceramide synthase, and lowering glycosphingolipid concentrations in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 27, 2015
    Assignee: Genzyme Corporation
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Frederic Vinick, Thomas H. Jozefiak, Yibin Xiang, John Kane, Junkai Liao
  • Publication number: 20140322319
    Abstract: The present invention relates to crosslinked polyamine particles and/or pharmaceutical compositions comprising, at least in part, crosslinked polyamine particles and aggregates of such particles (including cured aggregates of crosslinked polyamine particles). The compositions may be in the form of tablets comprising, for example, particles larger than 500 ?m particles and used for treating patients, for example, patients with hyperphosphatemia.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 30, 2014
    Applicant: GENZYME CORPORATION
    Inventors: Stephen Randall Holmes-Farley, David J. HARRIS, Steven C. POLOMOSCANIK, Adnan SALAMEH, Bruce SHUTTS, Richard SILVA, Pradeep K. DHAL, Lynne SOLE
  • Publication number: 20120322786
    Abstract: A compound for use in treating polycystic kidney disease is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating polycystic kidney disease in a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. Methods of treating in polycystic kidney disease in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Applicant: Genzyme Corporation
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Thomas H. Jozafiak, Frederic Vinick, Yibin Xiang, John Kane, Junkai Liao
  • Publication number: 20120322787
    Abstract: A compound is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The subject has type 2 diabetes; renal hypertrophy or hyperplasia associated with diabetic nephropathy; Tay-Sachs; Gaucher's; or Fabry's disease. Methods of decreasing plasma TNF-?, lowering blood glucose levels, decreasing glycated hemoglobin levels, inhibiting glucosylceramide synthase, and lowering glycosphingolipid concentrations in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Applicant: Genzyme Corporation
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Frederic Vinick, Thomas H. Jozefiak, Yibin Xiang, John Kane, Junkai Liao
  • Patent number: 8309593
    Abstract: A compound for use in treating polycystic kidney disease is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating polycystic kidney disease in a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. Methods of treating in polycystic kidney disease in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: November 13, 2012
    Assignee: Genzyme Corporation
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Thomas H. Jozafiak, Frederic Vinick, Yibin Xiang, John Kane, Junkai Liao
  • Patent number: 8304447
    Abstract: A compound is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The subject has type 2 diabetes; renal hypertrophy or hyperplasia associated with diabetic nephropathy; Tay-Sachs; Gaucher's; or Fabry's disease. Methods of decreasing plasma TNF-?, lowering blood glucose levels, decreasing glycated hemoglobin levels, inhibiting glucosylceramide synthase, and lowering glycosphingolipid concentrations in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: November 6, 2012
    Assignee: Genzyme Corporation
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Frederic Vinick, Thomas H. Jozefiak, Yibin Xiang, John Kane, Junkai Liao
  • Publication number: 20110184021
    Abstract: A compound for use in treating polycystic kidney disease is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating polycystic kidney disease in a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. Methods of treating in polycystic kidney disease in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: October 2, 2009
    Publication date: July 28, 2011
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Thomas H. Jozafiak, Frederic Vinick, Yibin Xiang, John Kane, Junkai Liao
  • Publication number: 20110142952
    Abstract: This invention relates to crosslinked amine-containing polymers for binding compounds or ions, and more specifically relates to pharmaceutically acceptable compositions for binding compounds or ions that include crosslinked amine-containing polymers. The pharmaceutically acceptable composition includes, for example, crosslinked polyamine particles, or pharmaceutically acceptable salts thereof, having a particle size distribution wherein greater than 10 vol. % of the particles have a particle size greater than 500 ?m.
    Type: Application
    Filed: June 17, 2009
    Publication date: June 16, 2011
    Inventors: David J. Harris, Stephen Randall Holmes-Farley, Steven C. Polomoscanlk, Adnan Salameh, Bruce Shutts, Richard Silva
  • Publication number: 20100256216
    Abstract: A compound is represented by Structural Formula (I): or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The subject has type 2 diabetes; renal hypertrophy or hyperplasia associated with diabetic nephropathy; Tay-Sachs; Gaucher's; or Fabry's disease. Methods of decreasing plasma TNF-?, lowering blood glucose levels, decreasing glycated hemoglobin levels, inhibiting glucosylceramide synthase, and lowering glycosphingolipid concentrations in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: May 30, 2008
    Publication date: October 7, 2010
    Inventors: Craig Siegel, Cecilia M. Bastos, David J. Harris, Angeles Dios, Edward Lee, Richard Silva, Lisa M. Cuff, Mikaela Levine, Cassandra A. Celatka, Frederic Vinick, Thomas H. Jozefiak, Yibin Xiang, John Kane, Junkai Liao
  • Publication number: 20090155368
    Abstract: The present invention relates to crosslinked polyamine particles and/or pharmaceutical compositions comprising, at least in part, crosslinked polyamine particles and aggregates of such particles (including cured aggregates of crosslinked polyamine particles). The compositions may be in the form of tablets comprising, for example, particles larger than 500 ?m, and used for treating patients, for example, patients with hyperphosphatemia.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 18, 2009
    Applicant: Genzyme Corporation
    Inventors: Stephen Randall Holmes-Farley, David J. Harris, Steven C. Polomoscanik, Adnan Salameh, Bruce Shutts, Richard Silva, Pradeep K. Dhal, Lynne Sole
  • Publication number: 20070174078
    Abstract: A method and system for performing site walks in connection with a bid is disclosed.
    Type: Application
    Filed: June 29, 2006
    Publication date: July 26, 2007
    Inventors: Richard Silva, Ian Willoughby
  • Publication number: 20060223390
    Abstract: Our invention is a new method of directing the thrust of a water propeller without rotating the engine. The Propeller Position Unit performs the function. The internal water jacket in the Propeller Position Unit permits multiple 360 degree position rotations. The Retraction Plate design permits vertical motion, rotational motion and a combination of both motions.
    Type: Application
    Filed: March 18, 2005
    Publication date: October 5, 2006
    Inventors: Richard Silva, Alan Stadlin
  • Publication number: 20060166963
    Abstract: The present invention relates to methods for preparing compounds of formula I: or suitable salts thereof useful as inhibitors of voltage-gated sodium channels and calcium channels. The invention also relates to methods for preparing intermediates related thereto.
    Type: Application
    Filed: December 15, 2005
    Publication date: July 27, 2006
    Inventors: Richard Silva, Andrew Jones, Todd Blythe
  • Publication number: 20050080737
    Abstract: The present invention relates generally to the process and system and process for converting cash sale transaction residuals (change—the coin and currency returned to a retail cash purchaser as the excess balance due to the purchaser for a transaction) into an electronic form for electronic transfer and deposit into interest bearing accounts at the point of sale through the combination of magnetic cards, magnetic card readers, automatic magnetic card dispensers with identity verifying capabilities and linkage to financial institutions.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 14, 2005
    Inventors: Marc Stein, Anthony Argiropoulos, Richard Silva
  • Publication number: 20050049226
    Abstract: A process for producing enantiomerically enriched (S)-?-(2-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5 (4H)-acetic acid hydrocarbyl ester, represented by the formula: Is provided, wherein R1 and R2 are hydrogens and R3 is methyl (i.e., (S)-Clopidogrel).
    Type: Application
    Filed: October 13, 2004
    Publication date: March 3, 2005
    Applicant: Rhodia Pharma Solutions Inc.
    Inventor: Richard Silva
  • Patent number: 6858734
    Abstract: A process for producing enantiomerically enriched (S)-?-(2-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5 (4H)-acetic acid hydrocarbyl ester, represented by the formula: Is provided, wherein R1 and R2 are hydrogens and R3 is methyl (i.e., (S)-Clopidogrel).
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: February 22, 2005
    Assignee: Rhodia Pharma Solutions Inc.
    Inventor: Richard A. Silva
  • Publication number: 20040214878
    Abstract: A process for producing enantiomerically enriched (S)-&agr;-(2-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetic acid hydrocarbyl ester, represented by the formula: 1
    Type: Application
    Filed: April 23, 2003
    Publication date: October 28, 2004
    Applicant: Rhodia ChiRex, Inc.
    Inventor: Richard A. Silva
  • Patent number: 6489512
    Abstract: A method for making an indole compound includes transition metal-catalyzed arylation of a hydrazone to form an aryl hydrazone, hydrolysis of the aryl hydrazone to form an aryl hydrazine, and acid catalyzed cyclization of the aryl hydrazine to form the indole compound.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: December 3, 2002
    Assignee: Rhodia Chirex Inc.
    Inventors: Frederick Hicks, Da-Ming Gou, Salvatore Anthony Marchese, Lawrence J. Martel, Atena Necula, Richard E. Benetti, Richard A. Silva
  • Publication number: 20020177738
    Abstract: The present invention relates to novel optically active benzylalkylcarbinols, to their preparation and to their use, in particular in perfumery.
    Type: Application
    Filed: May 23, 2002
    Publication date: November 28, 2002
    Inventors: Jay F. Larrow, Roger B. Pettman, Richard A. Silva, Isabelle Storet
  • Publication number: 20020119909
    Abstract: The present invention includes a process for enantioselective preparation of a non-racemic compound, which is either usable as a fragrance or flavor component or is convertible to a fragrance or flavor component by one or more additional reaction steps. The process includes the step of contacting either a substrate capable of forming a non-racemic compound by an enantioselective reaction and a co-reactant in the presence of a non-racemic catalyst, or a non-racemic or enantiopure substrate and a co-reactant, optionally in the presence of a racemic or non-racemic catalyst. The contacting is carried out at a temperature and length of time that is sufficient to produce the non-racemic compound with high optical purity. The process is used in stereoselective preparation of enantiomerically enriched intermediates useful in the preparation of non-racemic, chiral flavor and fragrance components.
    Type: Application
    Filed: January 17, 2002
    Publication date: August 29, 2002
    Applicant: Rhodia ChiRex, Inc.
    Inventors: Roger B. Pettman, Richard A. Silva, Jay Francis Larrow, Isabelle Storet