Patents by Inventor Swapan K. Chowdhury

Swapan K. Chowdhury 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: 7825121
    Abstract: The use of CCR5 antagonists of the formula or a pharmaceutically acceptable salt thereof, wherein R is optionally substituted phenyl, pyridyl, thiophenyl or naphthyl; R1 is hydrogen or alkyl; R2 is substituted phenyl, substituted heteroaryl, naphthyl, fluorenyl, diphenylmethyl or optionally substituted phenyl- or heteroaryl-alkyl; R3 is hydrogen, alkyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl, or optionally substituted phenyl, phenylalkyl, naphthyl, naphthylalkyl, heteroaryl or heteroarylalkyl; R4, R5 and R7 are hydrogen or alkyl; R6 is hydrogen, alkyl or alkenyl; for the treatment of HIV, solid organ transplant rejection, graft v.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: November 2, 2010
    Assignee: Schering Corporation
    Inventors: Ragulan Ramanathan, Anima Ghosal, Michael W. Miller, Swapan K. Chowdhury, Kevin B. Alton
  • Publication number: 20080173808
    Abstract: Disclosed are a process and a device for the detection, identification, and quantification of chemical compounds or biomolecules using Response Normalized Liquid Chromatography NanoSpray Ionization Mass Spectrometry (RNLC-NSI-MS).
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Inventors: Ragulan Ramanathan, Swapan K. Chowdhury, Kevin B. Alton
  • Patent number: 7312223
    Abstract: The present invention is directed to a metabolite of a xanthine Phosphodiesterase type 5 inhibitor having the following structure derivatives, and formulations thereof, and processes for preparing the same.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: December 25, 2007
    Assignee: Schering Corporation
    Inventors: Anima Ghosal, Wei Tong, Swapan K. Chowdhury, Shmuel Zbaida, Mark A. Wirth, Kevin B. Alton, James E. Patrick, Craig D. Boyle, Andrew Stamford
  • Patent number: 7271174
    Abstract: The present invention relates to metabolites of tricyclic amides, and structurally related compounds, represented by the structural formula (I): and pharmaceutically acceptable isomers, salts, solvates or esters of the compound of formula (I), wherein: R1 is selected from the group consisting of H and ?O; R2-R5 can be the same or different, each being independently selected from the group consisting of H, —OH, halide, —NH2 and ?O; and, the combination solid-dashed lines independently represent either single bonds or double bonds, wherein the number of combination solid-dashed lines that are double bonds is not greater than 2, and when, the double bonds are not adjacent, and when 0, one of R1-R5 is not H. Also disclosed are methods of treatment of proliferative diseases and methods for inhibiting the abnormal growth of cells, and for inhibiting farnesyl protein transferase using the novel compounds.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: September 18, 2007
    Assignee: Schering Corporation
    Inventors: Swapan K. Chowdhury, Anima Ghosal, Robert M. Iannucci, Wenqing Feng, Tze-Ming Chan, Shmuel Zbaida, Kevin B. Alton, Ronald J. Doll, Keith P. Minor
  • Patent number: 6982251
    Abstract: Hypocholesterolemic substituted 2-azetidinone compounds of the formula: are disclosed, as well as a methods of lowering cholesterol by administering said compounds, pharmaceutical compositions containing them, and the combination of a substituted 2-azetidinone cholesterol-lowering agent and a cholesterol biosynthesis inhibitor for the treatment and prevention of atherosclerosis.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: January 3, 2006
    Assignee: Schering Corporation
    Inventors: Anima Ghosal, Shmuel Zbaida, Swapan K. Chowdhury, Robert M. Iannucci, Wenqing Feng, Kevin B. Alton, James E. Patrick, Harry R. Davis
  • Publication number: 20040266810
    Abstract: The present invention relates to metabolites of tricyclic amides, and structurally related compounds, represented by the structural formula (I): 1
    Type: Application
    Filed: June 23, 2004
    Publication date: December 30, 2004
    Applicant: Schering Corporation
    Inventors: Swapan K. Chowdhury, Anima Ghosal, Robert M. Iannucci, Wenqing Feng, Tze-Ming Chan, Shmuel Zbaida, Kevin B. Alton, Ronald J. Doll, Keith P. Minor
  • Publication number: 20030105028
    Abstract: Hypocholesterolemic substituted 2-azetidinone compounds of the formula: 1
    Type: Application
    Filed: June 11, 2002
    Publication date: June 5, 2003
    Applicant: Schering Corporation
    Inventors: Anima Ghosal, Shmuel Zbaida, Swapan K. Chowdhury, Robert M. Iannucci, Wenqing Feng, Kevin B. Alton, James E. Patrick, Harry R. Davis
  • Publication number: 20020137690
    Abstract: please check closely-very confusing Hypocholesterolemic sugar-substituted 2-azetidinone compounds of the formula: 1
    Type: Application
    Filed: December 17, 2001
    Publication date: September 26, 2002
    Applicant: Schering Corporation
    Inventors: Anima Ghosal, Shmuel Zbaida, Swapan K. Chowdhury, Robert M. Iannucci, Wenqing Feng, Kevin B. Alton, James E. Patrick, Harry R. Davis
  • Patent number: 5245186
    Abstract: A mass analyzer for the analysis of mass spectra of ions derived from organic molecules includes an electrospray ion source having means to transport the molecules of interest in a solvent of pure water free of organic solvents. The electrospray ion source sprays the water solution, under an imposed voltage, through a metal syringe needle having a sharp etched point and into a conductive capillary tube having a sharpened entrance orifice.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: September 14, 1993
    Assignee: The Rockefeller University
    Inventors: Brian T. Chait, Swapan K. Chowdhury, Viswanatham Katta, Urooj A. Mirza
  • Patent number: 4977320
    Abstract: An electrospray ion source is designed for ready and simple plugging into commercial mass analyzers for mass spectrometric analysis of organic molecules. The electrospray is carried out is the ambient air and the ions and other charged species enter the mass analyuzer through a long metal capillary tube and three stages of differential pumping. The use of the long tube allows (a) convenient injection of the ions into the mass analyzer (b) optimization of the spray by direct visualization in the air (c) efficient and controlled heat transfer to the droplets and (d) efficient pumping of the region between the capillary exit and the skinner. Desolvation of the solvated ions is carried out using a combination of controlled heat transfer to the charged droplets during the transit through the tube and collisional activation in a region of reduced pressure. Desolvation with this system does not involve use of a strong countercurrent flow of heated gas.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: December 11, 1990
    Assignee: The Rockefeller University
    Inventors: Swapan K. Chowdhury, Viswanatham Katta, Brian T. Chait