Patents by Inventor Ramaswamy Chandrashekar

Ramaswamy Chandrashekar 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: 6964855
    Abstract: The invention provides compositions and methods for the detection and quantification of A. phagocytophilum (formerly known as Ehrlichia equi) antibodies and antibody fragments.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: November 15, 2005
    Assignee: IDEXX Laboratories
    Inventors: Thomas Patrick O'Connor, Jr., Ramaswamy Chandrashekar
  • Publication number: 20050244814
    Abstract: A method and device for detecting a West Nile Virus (WNV) infection including contacting a biological sample from a subject with an anti-IgM antibody and a recombinant WNV E polypeptide and detecting whether the polypeptide substantially binds to an antibody in the sample. The invention also includes a method and device for determining whether an animal is infected with West Nile Virus (WNV), or is either not infected or is vaccinated with a WNV vaccine.
    Type: Application
    Filed: April 28, 2004
    Publication date: November 3, 2005
    Inventors: Katherine Esty, Ramaswamy Chandrashekar
  • Publication number: 20050124015
    Abstract: The invention provides compositions and methods for the detection and quantification of A. phagocytophilum (formerly known as Ehrlichia equi) antibodies and antibody fragments.
    Type: Application
    Filed: January 11, 2005
    Publication date: June 9, 2005
    Inventors: Thomas O'Connor, Ramaswamy Chandrashekar
  • Publication number: 20050053923
    Abstract: A method and device for determining whether an animal is infected with West Nile Virus (WNV), or is either not infected or vaccinated with a WNV vaccine. The method includes contacting a biological sample from the subject with a first WNV polypeptide that is not an element of the WNV vaccine, and detecting whether antibodies in the sample bind to the WNV polypeptide. If the antibodies in the sample bind to the WNV polypeptide, it can be determined that the animal is naturally infected with WNV and if the antibodies do not bind to the polypeptide, it can be determined that the animal is either vaccinated or not infected.
    Type: Application
    Filed: September 9, 2004
    Publication date: March 10, 2005
    Applicant: IDEXX Laboratories, Inc.
    Inventors: Melissa Beall, Ramaswamy Chandrashekar
  • Publication number: 20040224350
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 11, 2004
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Patent number: 6773712
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: August 10, 2004
    Assignee: Heska Corporation
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Patent number: 6720152
    Abstract: A method for identifying a protein antigen to a target fungus is disclosed. The method comprises screening expressed proteins from a cDNA gene expression library with antisera to the target fungus and cross-screening with antisera to a nontarget fungus. Antibodies to the protein antigen are also disclosed. Methods for detecting the presence or absence of the antibodies or of the protein antigen are also disclosed, as well as kits for performing such assays. In preferred embodiments, the target fungus is H. capsulatum.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: April 13, 2004
    Assignee: Barnes-Jewish Hospital
    Inventors: Gary J. Weil, Ramaswamy Chandrashekar
  • Publication number: 20030194757
    Abstract: The invention provides compositions and methods for the detection and quantification of A. phagocytophila (formerly known as Ehrlichia equi) antibodies and antibody fragments.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 16, 2003
    Inventors: Thomas Patrick O'Connor, Ramaswamy Chandrashekar
  • Publication number: 20020165375
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Application
    Filed: January 22, 2002
    Publication date: November 7, 2002
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Publication number: 20020098546
    Abstract: The present invention relates to canine TAg1 proteins; to canine TAg1 nucleic acid molecules, including those that encode such TAg1 proteins; to antibodies raised against such TAg1 proteins; and to compounds that inhibit TAg1 activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are compositions and methods for detecting the presence of TAg1 protein or anti-TAg1 antibodies in an animal. The present invention also includes therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from disease.
    Type: Application
    Filed: July 30, 2001
    Publication date: July 25, 2002
    Inventors: Eric R. Weber, Wayne Arthur Jensen, Ramaswamy Chandrashekar
  • Patent number: 6414115
    Abstract: The present invention relates to parasitic nematode transglutaminase proteins; to parasitic nematode transglutaminase nucleic acid molecules, including those that encode such transglutaminase proteins; to antibodies raised against such transglutaminase proteins; and to compounds that inhibit parasitic nematode transglutaminase activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic nematodes.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: July 2, 2002
    Assignees: Heska Corporation, Board of Regents, The University of Texas System
    Inventors: Ramaswamy Chandrashekar, Kapil Mehta
  • Patent number: 6392017
    Abstract: The present invention relates to parasitic hemline DiAg2 proteins; to parasitic helminth DiAg2 nucleic acid molecules, including those that encode such DiAg2 proteins; to antibodies raised against such DiAg2 proteins; and to compounds that inhibit parasitic helminth DiAg2 activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: May 21, 2002
    Assignee: Heska Corporation
    Inventor: Ramaswamy Chandrashekar
  • Patent number: 6383774
    Abstract: The present invention relates to parasitic nematode transglutaminase proteins; to parasitic nematode transglutaminase nucleic acid molecules, including those that encode such transglutaminase proteins; to antibodies raised against such transglutaminase proteins; and to compounds that inhibit parasitic nematode transglutaminase activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic nematodes. This invention also relates to the surprising discovery that parasitic nematode transglutaminase proteins have protein disulfide isomerase activity. Accordingly, this invention relates further to inhibitors of the protein disulfide isomerase activity of said transglutaminases.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: May 7, 2002
    Assignee: Heska Corporation
    Inventor: Ramaswamy Chandrashekar
  • Patent number: 6368600
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: April 9, 2002
    Assignee: Heska Corporation
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Publication number: 20020037294
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Application
    Filed: March 20, 2001
    Publication date: March 28, 2002
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Patent number: 6352836
    Abstract: The present invention relates to: Dirofilaria and Brugia thioredoxin peroxidase type-2 (TPx-2) proteins; Dirofilaria and Brugia TPx-2 nucleic acid molecules, including those that encode such TPx-2 proteins; antibodies raised against such TPx-2 proteins; and compounds that inhibit Dirofilaria and Brugia TPx-2 activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: March 5, 2002
    Assignee: Heska Corporation and Colorado State University Research Foundation
    Inventors: Ramaswamy Chandrashekar, Naotoshi Tsuji
  • Patent number: 6309644
    Abstract: The present invention relates to parasitic nematode transglutaminase proteins; to parasitic nematode transglutaminase nucleic acid molecules, including those that encode such transglutaminase proteins; to antibodies raised against such transglutaminase proteins; and to compounds that inhibit parasitic nematode transglutaminase activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic nematodes. This invention also relates to the surprising discovery that parasitic nematode transglutaminase proteins have protein disulfide isomerase activity. Accordingly, this invention relates further to inhibitors of the protein disulfide isomerase activity of said transglutaminases.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: October 30, 2001
    Assignees: Heska Corporation, The Board of Regents, The University of Texas System
    Inventors: Ramaswamy Chandrashekar, Kapil Mehta
  • Patent number: 6248872
    Abstract: The present invention relates to parasitic nematode transglutaminase proteins; to parasitic nematode transglutaminase nucleic acid molecules, including those that encode such transglutaminase proteins; to antibodies raised against such transglutaminase proteins; and to compounds that inhibit parasitic nematode transglutaminase activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic nematodes.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: June 19, 2001
    Assignee: Heska Corporation
    Inventor: Ramaswamy Chandrashekar
  • Patent number: 6248329
    Abstract: The present invention relates to: parasitic helminth cuticlin proteins; parasitic helminth cuticlin nucleic acid molecules, including those that encode such cuticlin proteins; antibodies raised against such cuticlin proteins; and compounds that inhibit parasitic helminth cuticlin activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: June 19, 2001
    Inventors: Ramaswamy Chandrashekar, Tony H. Morales
  • Patent number: 6165735
    Abstract: The present invention relates to: parasitic helminth asparaginase proteins; parasitic helminth asparaginase nucleic acid molecules, including those that encode such asparaginase proteins; antibodies raised against such asparaginase proteins; and compounds that inhibit parasitic helminth asparaginase activity. The present invention also includes methods to obtain such proteins, nucleic acid molecules, antibodies, and inhibitory compounds. Also included in the present invention are therapeutic compositions comprising such proteins, nucleic acid molecules, antibodies and/or inhibitory compounds as well as the use of such therapeutic compositions to protect animals from diseases caused by parasitic helminths.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: December 26, 2000
    Assignees: Heska Corporation, Colorado State University Research Foundation
    Inventors: Ramaswamy Chandrashekar, Naotoshi Tsuji