Patents by Inventor Ravi Kaul

Ravi Kaul 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: 11913954
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: February 27, 2024
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Patent number: 11740240
    Abstract: The present invention relates to the development of novel immunoassays for the detection of neutralizing antibodies and/or high avidity neutralizing antibodies to SARS-CoV-2 spike protein variants or fragments thereof and, optionally, one or more cytokine in patient samples. Novel multiplex and singleplex immunoassays for the detection of neutralizing antibodies and/or high avidity neutralizing antibodies to SARS-CoV-2 spike protein variants or fragments thereof and, optionally, one or more cytokine in patient samples are also provided.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: August 29, 2023
    Assignee: BIO-RAD LABORATORIES, INC.
    Inventors: Qian Gao, Ravi Kaul, Shuxia Zhou, Roger P. Walker
  • Publication number: 20220326240
    Abstract: The present disclosure relates to the development of novel immunoassays for the detection of SARS-CoV-2 or secreted spike protein (or fragments thereof) in saliva, nasal mucosal sample, throat samples, or nasopharyngeal samples.
    Type: Application
    Filed: April 8, 2022
    Publication date: October 13, 2022
    Inventors: RAVI KAUL, SHUXIA ZHOU, ROGER P. WALKER
  • Publication number: 20220137047
    Abstract: The present invention relates to an immunoassay for the detection of Borrelia specific IgG, IgM and IgG/IgM antibodies in biological samples suspected of Lyme infection. The immunoassay can be performed via a standard immunoassay format or on an automated platform. In various embodiments, the immunoassay uses one or more Borrelia specific chimeric peptides VlsE-FlaB (designated pFlaB-mV), VlsE-ErpP (designated pErp59-mV), VlsE-P35 (designated pP35-mV) alone or in combination with one or more outer surface protein C (Osp C) types B or I, p58 and DbpA. Other aspects of the invention provide antigen/substrate combinations and compositions comprising combinations of the disclosed peptides and/or proteins for use in the immunoassays described herein.
    Type: Application
    Filed: December 27, 2021
    Publication date: May 5, 2022
    Inventors: MICHELLE DELANOY, JOHN FLANAGAN, AUDREY ARJOMANDI, RAVI KAUL, STEVEN R. BINDER
  • Publication number: 20220018838
    Abstract: The present invention relates to the development of novel immunoassays for the detection of neutralizing antibodies and/or high avidity neutralizing antibodies to SARS-CoV-2 spike protein variants or fragments thereof and, optionally, one or more cytokine in patient samples. Novel multiplex and singleplex immunoassays for the detection of neutralizing antibodies and/or high avidity neutralizing antibodies to SARS-CoV-2 spike protein variants or fragments thereof and, optionally, one or more cytokine in patient samples are also provided.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 20, 2022
    Inventors: QIAN GAO, RAVI KAUL, SHUXIA ZHOU, ROGER P. WALKER
  • Patent number: 11209431
    Abstract: The present invention relates to an immunoassay for the detection of Borrelia specific IgG, IgM and IgG/IgM antibodies in biological samples suspected of Lyme infection. The immunoassay can be performed via a standard immunoassay format or on an automated platform. In various embodiments, the immunoassay uses one or more Borrelia specific chimeric peptides VlsE-FlaB (designated pFlaB-mV), VlsE-ErpP (designated pErp59-mV), VlsE-P35 (designated pP35-mV) alone or in combination with one or more outer surface protein C (Osp C) types B or I, p58 and DbpA. Other aspects of the invention provide antigen/substrate combinations and compositions comprising combinations of the disclosed peptides and/or proteins for use in the immunoassays described herein.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: December 28, 2021
    Assignee: BIO-RAD LABORATORIES, INC.
    Inventors: Michelle Delanoy, John Flanagan, Audrey Arjomandi, Ravi Kaul, Steven R. Binder
  • Publication number: 20210156859
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Application
    Filed: February 8, 2021
    Publication date: May 27, 2021
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Patent number: 10942182
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: March 9, 2021
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20200225230
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Patent number: 10648981
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 12, 2020
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20190265240
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 29, 2019
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Patent number: 10324091
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: June 18, 2019
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20190025303
    Abstract: The present invention relates to an immunoassay for the detection of Borrelia specific IgG, IgM and IgG/IgM antibodies in biological samples suspected of Lyme infection. The immunoassay can be performed via a standard immunoassay format or on an automated platform. In various embodiments, the immunoassay uses one or more Borrelia specific chimeric peptides VlsE-FlaB (designated pFlaB-mV), VlsE-ErpP (designated pErp59-mV), VlsE-P35 (designated pP35-mV) alone or in combination with one or more outer surface protein C (Osp C) types B or I, p58 and DbpA. Other aspects of the invention provide antigen/substrate combinations and compositions comprising combinations of the disclosed peptides and/or proteins for use in the immunoassays described herein.
    Type: Application
    Filed: October 6, 2016
    Publication date: January 24, 2019
    Inventors: MICHELLE DELANOY, JOHN FLANAGAN, AUDREY ARJOMANDI, RAVI KAUL, STEVEN R. BINDER
  • Patent number: 10067135
    Abstract: Provided herein are multiplex assays for determining whether an individual is or has been infected with Hepatitis B virus, and the stage of infection or resolution. In addition, the multiplex system can discriminate between vaccinated subjects and subjects susceptible to Hepatitis B infection.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: September 4, 2018
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20180172687
    Abstract: Provided herein are multiplex assays for determining whether an individual is or has been infected with Hepatitis B virus, and the stage of infection or resolution. In addition, the multiplex system can discriminate between vaccinated subjects and subjects susceptible to Hepatitis B infection.
    Type: Application
    Filed: February 14, 2018
    Publication date: June 21, 2018
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Patent number: 9927439
    Abstract: Provided herein are multiplex assays for determining whether an individual is or has been infected with Hepatitis B virus, and the stage of infection or resolution. In addition, the multiplex system can discriminate between vaccinated subjects and subjects susceptible to Hepatitis B infection.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 27, 2018
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20170370931
    Abstract: Provided herein are multiplex assays for detecting antibodies indicative of presence and stage of syphilis infection in an individual. Individuals infected with syphilis produce antibodies directed to syphilis components and the lipid cellular debris associated with the infection. The present disclosure represents the first combination of these diverse antibody targets in a single assay.
    Type: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker
  • Publication number: 20140323332
    Abstract: Provided herein are multiplex assays for determining whether an individual is or has been infected with Hepatitis B virus, and the stage of infection or resolution. In addition, the multiplex system can discriminate between vaccinated subjects and subjects susceptible to Hepatitis B infection.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: Bio-Rad Laboratories, Inc.
    Inventors: Ravi Kaul, Weiming Zheng, Roger Walker