Patents by Inventor Michael Sekar

Michael Sekar 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: 20230165964
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Application
    Filed: November 8, 2022
    Publication date: June 1, 2023
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John W Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Patent number: 11529420
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: December 20, 2022
    Assignee: DURECT CORPORATION
    Inventors: Michael Sekar, Felix Theeuwes, Keith Edward Branham, John W Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Publication number: 20220275029
    Abstract: The present disclosure provides complexes and compositions comprising particles, microparticles or nanoparticles, for delivery of payloads into a cell or across a polarized epithelial cell. The compositions can comprise a payload in a pill or tablet for delivery of the payload into or across a polarized epithelial cell.
    Type: Application
    Filed: February 16, 2022
    Publication date: September 1, 2022
    Inventors: Randall J. MRSNY, Derek MACLEAN, Michael SEKAR, Kevin YIN, Tahir Mahmood, Thomas Carl Hunter, Keyi Liu
  • Publication number: 20220265830
    Abstract: The present disclosure provides long-acting formulations and vehicles, methods of making the same and methods of using the same.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 25, 2022
    Applicant: DURECT CORPORATION
    Inventors: Susan AUTIO, Keith Edward BRANHAM, James A. FILICE, John W. GIBSON, John J. LEONARD, James MATRIANO, Whitney MORO, Michael SEKAR, Chelsea Alexandra SNYDER, Robert G. STRICKLEY, Raju SUBRAMANIAN, Felix THEEUWES, Monica TIJERINA, Jeremy C. WRIGHT, Su II YUM, Faye XU
  • Publication number: 20220257619
    Abstract: The present disclosure provides long-acting formulations of tenofovir alafenamide, methods of making the same and methods of using the same.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 18, 2022
    Inventors: Susan Autio, Keith Edward Branham, James A. Filice, John W. Gibson, John J. Leonard, James Matriano, Whitney Moro, Michael Sekar, Chelsea Alexandra Snyder, Robert G. Strickley, Raju Subramanian, Felix Theeuwes, Monica Tijerina, Jeremy C. Wright, Su Il Yum, Faye Xu
  • Publication number: 20210322517
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. In some cases, the composition includes sucrose acetate isobutyrate, biodegradable polymer, hydrophobic solvent, and a complex comprising a counterion and beneficial agent, such as protein, peptide, nucleic acid, or small molecular weight compound. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: April 5, 2021
    Publication date: October 21, 2021
    Applicant: DURECT CORPORATION
    Inventors: William Van Osdol, Su Il Yum, Felix Theeuwes, Michael Sekar, John W Gibson, Keith Edward Branham, Huey-Ching L. Su
  • Publication number: 20210128598
    Abstract: The present disclosure is directed to a method of making a composition by combining a vehicle, e.g., a single phase vehicle, and an insoluble component comprising a beneficial agent, and sterilizing the composition using ionizing radiation prior to use, wherein the beneficial agent is stable following exposure to a sterilizing dose of ionizing radiation. Related compositions and methods are provided.
    Type: Application
    Filed: October 19, 2020
    Publication date: May 6, 2021
    Applicant: Durect Corporation
    Inventors: Michael Sekar, SuIl Yum, Felix Theeuwes, William Van Osdol
  • Publication number: 20210038731
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Application
    Filed: July 21, 2020
    Publication date: February 11, 2021
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Felix Theeuwes, Keith Edward Branham, John W. Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Patent number: 10758623
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 1, 2020
    Assignee: DURECT CORPORATION
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Publication number: 20190209654
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: November 2, 2018
    Publication date: July 11, 2019
    Applicant: Durect Corporation
    Inventors: William Van Osdol, SuIl Yum, Felix Theeuwes, Michael Sekar, John W Gibson, Keith Edward Branham, Huey Ching Su
  • Publication number: 20190070206
    Abstract: The present disclosure is directed to a method of making a composition by combining a vehicle, e.g., a single phase vehicle, and an insoluble component comprising a beneficial agent, and sterilizing the composition using ionizing radiation prior to use, wherein the beneficial agent is stable following exposure to a sterilizing dose of ionizing radiation. Related compositions and methods are provided.
    Type: Application
    Filed: August 2, 2018
    Publication date: March 7, 2019
    Inventors: Michael Sekar, Su Il Yum, Felix Theeuwes, William Van Osdol
  • Publication number: 20180256727
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Application
    Filed: February 2, 2018
    Publication date: September 13, 2018
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Publication number: 20170196989
    Abstract: The present disclosure is directed to a method of making a composition by combining a vehicle, e.g., a single phase vehicle, and an insoluble component comprising a beneficial agent, and sterilizing the composition using ionizing radiation prior to use, wherein the beneficial agent is stable following exposure to a sterilizing dose of ionizing radiation. Related compositions and methods are provided.
    Type: Application
    Filed: December 19, 2016
    Publication date: July 13, 2017
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Su Il Yum, Felix Theeuwes, William W. van Osdol
  • Publication number: 20170189547
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: November 18, 2016
    Publication date: July 6, 2017
    Inventors: William W. van Osdol, Su Il Yum, Felix Theeuwes, Michael Sekar, John W. Gibson, Keith E. Branham, Huey-Ching Su
  • Publication number: 20160303242
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Application
    Filed: December 8, 2014
    Publication date: October 20, 2016
    Applicant: Durect Corporation
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John W Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Publication number: 20140294977
    Abstract: The present disclosure is directed to a method of making a composition by combining a vehicle, e.g., a single phase vehicle, and an insoluble component comprising a beneficial agent, and sterilizing the composition using ionizing radiation prior to use, wherein the beneficial agent is stable following exposure to a sterilizing dose of ionizing radiation. Related compositions and methods are provided.
    Type: Application
    Filed: November 21, 2012
    Publication date: October 2, 2014
    Applicant: DURECT CORPORATION
    Inventors: Michael Sekar, Su Il Yum, Felix Theeuwes, William van Osdol
  • Publication number: 20140193365
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: December 10, 2013
    Publication date: July 10, 2014
    Applicant: Durect Corporation
    Inventors: William W. van Osdol, Su Il Yum, Felix Theeuwes, Michael Sekar, John W. Gibson, Keith E. Branham, Huey-Ching Su
  • Publication number: 20130259907
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: March 7, 2013
    Publication date: October 3, 2013
    Inventors: William van Osdol, Su Il Yum, Felix Theeuwes, Michael Sekar, John W. Gibson, Keith E. Branham, Huey-Ching Su
  • Publication number: 20120225033
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: November 23, 2011
    Publication date: September 6, 2012
    Inventors: William W. van Osdol, Su il Yum, Felix Theeuwes, Michael Sekar, John Gibson, Keith Branham, Huey-Ching Su
  • Publication number: 20070054308
    Abstract: The present invention relates to methods for detecting the presence of one or more analytes of interest in a sample by measuring changes in fluorescence anisotropy as a result of binding of the analytes to specific aptamers. The aptamers are immobilized on a solid support and may be in the form of an array.
    Type: Application
    Filed: November 1, 2006
    Publication date: March 8, 2007
    Inventors: Michael Sekar, I. Greenfield