Patents by Inventor Su Il Yum

Su Il Yum 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: 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: 20210330582
    Abstract: A composition includes a salt; a polymer; and an antioxidant. A dispenser includes a flexible container having a closed end and an opposed open end; an osmotically-effective solute composition encapsulating at least a portion of the container, the solute composition including antioxidant in an amount of at least 0.5 wt %, based on weight of the solute composition; a semipermeable membrane encapsulating the osmotically-effective solute composition; a cap having a sealing surface adapted for sealing engagement with the open end of the container; and a port extending from an interior of the container and through the cap. Also disclosed are methods of making and using the composition and osmotic pumps.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 28, 2021
    Applicant: Durect Corporation
    Inventors: Xiaoping Song, Clarisa Peer, Su Il Yum
  • 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: 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
  • Publication number: 20200281915
    Abstract: The invention pertains to methods that include administering to a subject a transoral dosage form comprising a pharmaceutical carrier and sufentanil, and maintaining a mean pH ranging from about 3.5 to about 5.5 during a dosing period after administration of the transoral dosage form as determined using an in vitro donor media test. Related dosage forms are also disclosed. Also disclosed are transoral dosage forms and related methods, wherein a transoral dosage form may comprise: (1) about 5 to about 1000 micrograms of sufentanil; (2) about 50 micrograms to about 100 milligrams of naloxone; and (3) acidifying material in an amount sufficient to provide a mean pH ranging from about 3.5 to about 5.
    Type: Application
    Filed: February 13, 2020
    Publication date: September 10, 2020
    Inventors: Su Il Yum, Jaymin Shah, Sung Yun Kwon, Xiaoping Song
  • 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: 20200197315
    Abstract: The present disclosure provides dosage forms designed to deliver active pharmaceutical ingredients (APIs) in a controlled release manner. For instance, the present disclosure includes dosage forms with adequate time of onset of action and reduced lag times in the fed state. Such dosage forms find use in a variety of conditions where a rapid onset of action is desired followed by an extended release phase for the active agent, for example in the treatment of ADHD, pain or anxiety. In some cases, the dosage form includes a drug composition including a pharmacologically active agent, a barrier layer covering at least a portion of the drug composition, and a drug layer covering at least a portion of the barrier layer, wherein the drug layer includes the pharmacologically active agent. Related methods of making and administering the disclosed dosage forms are also provided.
    Type: Application
    Filed: July 5, 2017
    Publication date: June 25, 2020
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Yen-Fei Chen, Chin-Chih Chiang
  • Publication number: 20200101021
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Application
    Filed: September 3, 2019
    Publication date: April 2, 2020
    Applicant: DURECT CORPORATION
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Patent number: 10603312
    Abstract: The invention pertains to methods that include administering to a subject a transoral dosage form comprising a pharmaceutical carrier and sufentanil, and maintaining a mean pH ranging from about 3.5 to about 5.5 during a dosing period after administration of the transoral dosage form as determined using an in vitro donor media test. Related dosage forms are also disclosed. Also disclosed are transoral dosage forms and related methods, wherein a transoral dosage form may comprise: (1) about 5 to about 1000 micrograms of sufentanil; (2) about 50 micrograms to about 100 milligrams of naloxone; and (3) acidifying material in an amount sufficient to provide a mean pH ranging from about 3.5 to about 5.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: March 31, 2020
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Jaymin Shah, Sung Yun Kwon, Xiaoping Song
  • Publication number: 20190231678
    Abstract: A composition includes a salt; a polymer; and an antioxidant. A dispenser includes a flexible container having a closed end and an opposed open end; an osmotically-effective solute composition encapsulating at least a portion of the container, the solute composition including antioxidant in an amount of at least 0.5 wt %, based on weight of the solute composition; a semipermeable membrane encapsulating the osmotically-effective solute composition; a cap having a sealing surface adapted for sealing engagement with the open end of the container; and a port extending from an interior of the container and through the cap. Also disclosed are methods of making and using the composition and osmotic pumps.
    Type: Application
    Filed: December 18, 2018
    Publication date: August 1, 2019
    Applicant: Durect Corporation
    Inventors: Xiaoping Song, Clarisa Peer, Su Il Yum
  • Publication number: 20190231702
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Application
    Filed: December 19, 2018
    Publication date: August 1, 2019
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Publication number: 20190167590
    Abstract: Novel compositions, formulations and dosage forms comprising stabilized micronized opioid particles are disclosed. Exemplary opioids include oxycodone, oxymorphone, hydrocodone, and hydromorphone, including as free bases or as salts. Stabilized micronized opioid particles having a DV90 particle size distribution of less and or equal to 10? or less than or equal to 20? are disclosed. Methods for micronizing an opioid to provide stabilized micronized opioid particles are also disclosed.
    Type: Application
    Filed: September 26, 2018
    Publication date: June 6, 2019
    Inventors: Michael Zamloot, Cherng-Chyi Fu, De-Hwa Chao, Andrei Blasko, Su Il Yum
  • Patent number: 10300142
    Abstract: The present disclosure provides compositions (e.g., extended release compositions) which exhibit a desirable pharmacokinetic profile of an active agent while providing reduced dissolution sample variability, e.g., in the form of reduced inter-capsule variability and/or a reduction in storage-time dependent change in mean release of the active agent from the composition. Related methods of making and administering the disclosed compositions are also provided.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 28, 2019
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • 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
  • Patent number: 10206883
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 19, 2019
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Publication number: 20180339049
    Abstract: The present disclosure provides compositions (e.g., extended release compositions) which exhibit a desirable pharmacokinetic profile of an active agent while providing reduced dissolution sample variability, e.g., in the form of reduced inter-capsule variability and/or a reduction in storage-time dependent change in mean release of the active agent from the composition. Related methods of making and administering the disclosed compositions are also provided.
    Type: Application
    Filed: November 29, 2017
    Publication date: November 29, 2018
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • Publication number: 20180289696
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Application
    Filed: February 2, 2018
    Publication date: October 11, 2018
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • 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