Patents by Inventor Mitali Ghoshal

Mitali Ghoshal 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).

  • Publication number: 20060088933
    Abstract: The invention provides derivatives of efavirenz and methods of making derivatives of efavirenz. The derivatives include immunogenic compounds for producing antibodies to efavirenz and labeled efavirenz tracers. These compounds are useful in immunoassay methods for determining efavirenz.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 27, 2006
    Inventors: Gerald Sigler, Mitali Ghoshal, Lili Arabshahi
  • Publication number: 20050153439
    Abstract: The present invention comprises novel analogs of ecstasy-class compounds and novel ecstasy-class immunogens leashed out of, i.e., derived from, the methylenedioxy position. The invention also comprises unique monoclonal antibodies generated using MDO-leashed MDMA immunogens as well as unique conjugates and tracers. These antibodies, conjugates, and tracers are useful in immunoassays for the detection of ecstasy-class compounds in biological fluids.
    Type: Application
    Filed: March 9, 2005
    Publication date: July 14, 2005
    Inventors: Mitali Ghoshal, Gerald Sigler, Richard Root, Anlonga Ouyang, Salvatore Salamone
  • Publication number: 20050148596
    Abstract: Derivatives and conjugates of indinavir for generation of antibodies and labeled conjugates for use for detection of indinavir in biological samples. The derivatives are synthesized out of the indane ring hydroxyl group or the pyridine ring nitrogen of indinavir. Also disclosed is synthesis of a major metabolite of indinavir (M6) in a single step from indinavir using palladium catalyst and hydrogen gas. Indinavir M6 has been extended to synthesize various analogs of indinavir with suitable functional groups. These derivatives are useful in the development of indinavir immunogens, antibodies, and labeled conjugates in the development of indinavir immunoassays.
    Type: Application
    Filed: November 12, 2004
    Publication date: July 7, 2005
    Inventors: Mitali Ghoshal, Gerald Sigler, Aniruddha Patwardhan
  • Publication number: 20050131216
    Abstract: The invention provides derivatives of efavirenz and methods of making derivatives of efavirenz. The derivatives include immunogenic compounds for producing antibodies to efavirenz and labeled efavirenz tracers. These compounds are useful in immunoassay methods for determining efavirenz.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 16, 2005
    Inventors: Mitali Ghoshal, Gerald Sigler, Anlong Ouyang, Richard Root
  • Publication number: 20050014210
    Abstract: The present invention comprises novel analogs of ecstasy-class compounds and novel ecstasy-class immunogens leashed out of, i.e., derived from, the methylenedioxy position. The invention also comprises unique monoclonal antibodies generated using MDO-leashed MDMA immunogens as well as unique conjugates and tracers. These antibodies, conjugates, and tracers are useful in immunoassays for the detection of ecstasy-class compounds in biological fluids.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 20, 2005
    Inventors: Mitali Ghoshal, Gerald Sigler, Richard Root, Anlonga Ouyang, Salvatore Salamone
  • Publication number: 20050009076
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Application
    Filed: July 27, 2004
    Publication date: January 13, 2005
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond Hui, Ronald Hawley, Eva Hoess, Erasmus Huber, John Patterson, Salvatore Salamone, Allan Dorn
  • Publication number: 20040248222
    Abstract: The present invention relates to monoclonal antibodies that specifically bind buprenorphine and/or at least one metabolic product thereof. The present invention further relates to buprenorphine metabolite conjugates for the production of monoclonal antibodies that specifically bind buprenorphine and/or at least one metabolic product thereof and hybridoma cells that produce the monoclonal antibodies. The invention also relates to immunoassay methods for determining buprenorphine and/or one or more buprenorphine metabolites in a sample using the novel antibodies and conjugates of the present invention.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 9, 2004
    Applicant: Roche Diagnostics Corporation
    Inventors: Richard T. Root, Mitali Ghoshal
  • Patent number: 6811998
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: November 2, 2004
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond A. Hui, Ronald Hawley, Eva Hoess, Erasmus J. Huber, John W. Patterson, Salvatore J. Salamone, Allan Dorn
  • Publication number: 20040214251
    Abstract: The invention provides derivatives of efavirenz and methods of making derivatives of efavirenz. The derivatives include immunogenic compounds for producing antibodies to efavirenz and labeled efavirenz tracers. These compounds are useful in immunoassay methods for determining efavirenz.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Inventors: Gerald F. Sigler, Mitali Ghoshal, Lili Arabshahi
  • Patent number: 6794496
    Abstract: The present invention provides hapten derivatives useful for the preparation of antigens, antibodies and reagents for use in immunoassays for the detection of LSD and 2-oxo-3-hydroxy LSD. In the present invention, the 2-oxy LSD nucleus is derivatized out of the indole nitrogen to form an aminoalkyl derivative. The resulting haptens can then be further modified at this functionalized position for linking to appropriate immunogenic or labeling groups to provide reagents for immunoassays having substantially equal specificity for both LSD and 2-oxo-3-hydroxy-LSD.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: September 21, 2004
    Assignee: Roche Diagnostics Corporation
    Inventors: Mitali Ghoshal, Stephen Vitone, Gerald F. Sigler, Alan J. McNally
  • Publication number: 20040138425
    Abstract: A method of making a derivatized aminoglycoside includes reacting an aminoglycoside with at least 2 equivalents of a divalent metal ion in an aprotic solvent to complex two neighboring amino group and hydroxyl group pairs; reacting the non-complexed amino groups with a protecting reagent to provide protecting groups; removing the divalent metal ion to provide two unprotected amino groups; reacting one of the unprotected amino groups with a reactive substance containing an linker, a carrier, or a label; and removing the protecting groups. This method can be used to produce novel compounds and reagents.
    Type: Application
    Filed: July 22, 2003
    Publication date: July 15, 2004
    Inventors: Mitali Ghoshal, Salvatore J. Salamone
  • Publication number: 20040127689
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for HIV protease inhibitors. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group common to all HIV protease inhibitors, e.g., saquinavir, nelfinavir, indinavir, amprenavir, ritonavir, lopinavir, and atazanavir.
    Type: Application
    Filed: September 24, 2003
    Publication date: July 1, 2004
    Inventors: Gerald F. Sigler, Raymond A. Hui, Ina Deras, Richard Terry Root, Mitali Ghoshal, Erasmus Huber, Herbert W. Von Der Eltz, Sigrun Metz, Peter Kern
  • Patent number: 6653456
    Abstract: A method of making a derivatized aminoglycoside includes reacting an aminoglycoside with at least 2 equivalents of a divalent metal ion in an aprotic solvent to complex two neighboring amino group and hydroxyl group pairs; reacting the non-complexed amino groups with a protecting reagent to provide protecting groups; removing the divalent metal ion to provide two unprotected amino groups; reacting one of the unprotected amino groups with a reactive substance containing an linker, a carrier, or a label; and removing the protecting groups. This method can be used to produce novel compounds and reagents.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: November 25, 2003
    Assignee: Roche Diagnostics Corporation
    Inventors: Mitali Ghoshal, Salvatore J. Salamone
  • Publication number: 20030207431
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide.
    Type: Application
    Filed: January 14, 2003
    Publication date: November 6, 2003
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond A. Hui, Ronald Hawley, Eva Hoess, Erasmus J. Huber, John W. Patterson, Salvatore J. Salamone, Allan Dorn
  • Publication number: 20030100088
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for HIV protease inhibitors. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group common to all HIV protease inhibitors, e.g., saquinavir, nelfinavir, indinavir, amprenavir, ritonavir and lopinavir.
    Type: Application
    Filed: July 10, 2002
    Publication date: May 29, 2003
    Inventors: Gerald F. Sigler, Raymond A. Hui, Ina Deras, Richard Terry Root, Mitali Ghoshal, Erasmus J. Huber, Herbert W. Von Der Eltz, Sigrun Metz
  • Publication number: 20030060430
    Abstract: A method of making a derivatized aminoglycoside includes reacting an aminoglycoside with at least 2 equivalents of a divalent metal ion in an aprotic solvent to complex two neighboring amino group and hydroxyl group pairs; reacting the non-complexed amino groups with a protecting reagent to provide protecting groups; removing the divalent metal ion to provide two unprotected amino groups; reacting one of the unprotected amino groups with a reactive substance containing an linker, a carrier, or a label; and removing the protecting groups. This method can be used to produce novel compounds and reagents.
    Type: Application
    Filed: July 31, 2001
    Publication date: March 27, 2003
    Inventors: Mitali Ghoshal, Salvatore J. Salamone
  • Patent number: 6524808
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: February 25, 2003
    Assignee: Roche Diagnostics Corporation
    Inventors: Allan R. Dorn, Salvatore J. Salamone, Mitali Ghoshal, Eva Hoess, Erasmus Huber, Ronald C. Hawley, John W. Patterson
  • Publication number: 20030013131
    Abstract: The present invention provides hapten derivatives useful for the preparation of antigens, antibodies and reagents for use in immunoassays for the detection of LSD and 2-oxo-3-hydroxy LSD. In the present invention, the 2-oxy LSD nucleus is derivatized out of the indole nitrogen to form an aminoalkyl derivative. The resulting haptens can then be further modified at this functionalized position for linking to appropriate immunogenic or labeling groups to provide reagents for immunoassays having substantially equal specificity for both LSD and 2-oxo-3-hydroxy-LSD.
    Type: Application
    Filed: July 18, 2002
    Publication date: January 16, 2003
    Inventors: Mitali Ghoshal, Stephen Vitone, Gerald F. Sigler, Alan J. McNally
  • Patent number: 6368814
    Abstract: The present invention is directed to novel tricyclic antidepressant drug derivatives synthesized for covalent attachment to proteins or polypeptide antigens for use in the preparation of antibodies or receptors to tricyclic antidepressant drugs and tricyclic antidepressant metabolites. The new derivatives are characterized by a saturated double bond on the amitriptyline portion of the molecule and are represented by the structure where R1 is a saturated or unsaturated, substituted or unsubstituted, straight or branched chain of 0-10 carbon or heteroatoms, X is a linker group consisting of 0-2 substituted or unsubstituted aromatic rings, and Y is an activated ester or NH—Z, where Z is a poly(amino acid).
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 9, 2002
    Assignee: Roche Diagnostics Corporation
    Inventors: Mitali Ghoshal, Jane S. C. Tsai, Stephen Vitone
  • Publication number: 20010044118
    Abstract: The present invention provides hapten derivatives useful for the preparation of antigens, antibodies and reagents for use in immunoassays for the detection of LSD and 2-oxo-3-hydroxy LSD. In the present invention, the 2-oxy LSD nucleus is derivatized out of the indole nitrogen to form an aminoalkyl derivative. The resulting haptens can then be further modified at this functionalized position for linking to appropriate immunogenic or labeling groups to provide reagents for immunoassays having substantially equal specificity for both LSD and 2-oxo-3-hydroxy-LSD.
    Type: Application
    Filed: December 8, 2000
    Publication date: November 22, 2001
    Inventors: Mitali Ghoshal, Stephen Vitone, Gerald F. Sigler, Alan J. McNally