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: 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: 20160193345
    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: December 2, 2015
    Publication date: July 7, 2016
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Publication number: 20160136102
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Application
    Filed: July 13, 2015
    Publication date: May 19, 2016
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Patent number: 9339463
    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: Grant
    Filed: December 5, 2008
    Date of Patent: May 17, 2016
    Inventors: Michael Zamloot, Cherng-chyi Fu, De-Hwa Chao, Andrei Blasko, Su Il Yum
  • Publication number: 20160038592
    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: March 14, 2014
    Publication date: February 11, 2016
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • Publication number: 20160038479
    Abstract: The present disclosure provides extended release compositions including, formulations that comprise such compositions, which exhibit desirable dissolution of an active agent while maintaining its physical stability in a dosage form including, for example, providing reduced 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 and formulations are also provided.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 11, 2016
    Inventors: Michael S. Zamloot, Roger Fu, Su Il Yum, Wendy Chao, Huey-Ching Su
  • Patent number: 9233160
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: January 12, 2016
    Assignee: DURECT CORPORATION
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Publication number: 20150250738
    Abstract: Transdermal delivery systems for administering sufentanil through the skin are provided. The systems contain a sufficient amount of sufentanil to induce and maintain a constant state of analgesia when applied to a subject. The systems are characterized as having one or more features including a high degree of dosage form rate control over flux of sufentanil from the system, a high net flux of sufentanil from the system through the skin, lack of a permeation enhancer, an adhesive member demonstrating superior shear time, a low coefficient of variation in the net flux of sufentanil from the system, a high delivery efficiency, and a substantially constant steady state net flux of sufentanil from the system. Methods of using the transdermal delivery systems to administer a sufficient amount of sufentanil to induce and maintain analgesia for extended periods when applied to a subject are also provided.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 10, 2015
    Inventors: Su Il Yum, Felix Theeuwes
  • Publication number: 20150196644
    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: December 17, 2014
    Publication date: July 16, 2015
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Patent number: 8974821
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 10, 2015
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Patent number: 8951556
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 10, 2015
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • Patent number: 8945614
    Abstract: Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 3, 2015
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton, Roger Fu, Michael S. Zamloot
  • 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: 20140275147
    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 and formulations are also provided.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • 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: 20140080870
    Abstract: Transdermal delivery systems for administering sufentanil through the skin are provided. The systems contain a sufficient amount of sufentanil to induce and maintain a constant state of analgesia when applied to a subject. The systems are characterized as having one or more features including a high degree of dosage form rate control over flux of sufentanil from the system, a high net flux of sufentanil from the system through the skin, lack of a permeation enhancer, an adhesive member demonstrating superior shear time, a low coefficient of variation in the net flux of sufentanil from the system, a high delivery efficiency, and a substantially constant steady state net flux of sufentanil from the system. Methods of using the transdermal delivery systems to administer a sufficient amount of sufentanil to induce and maintain analgesia for extended periods when applied to a subject are also provided.
    Type: Application
    Filed: March 7, 2013
    Publication date: March 20, 2014
    Applicant: DURECT CORPORATION
    Inventors: Su Il Yum, Felix Theeuwes
  • Publication number: 20130317049
    Abstract: Methods, including those for administering novel pharmaceutical compositions, dosage forms containing an opioid active pharmaceutical ingredient, are useful for treating pain, arthritic conditions and/or inflammation associated with a chronic condition, including pain from arthritis and inflammation.
    Type: Application
    Filed: October 22, 2012
    Publication date: November 28, 2013
    Applicant: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Roger Fu, Michael Zamloot
  • Publication number: 20130287845
    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: March 5, 2013
    Publication date: October 31, 2013
    Inventors: Su Il Yum, Grant Schoenhard, Arthur J. Tipton, John W. Gibson, John C. Middleton
  • Publication number: 20130273139
    Abstract: Disclosed are bupivacaine transdermal delivery systems, and related methods.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 17, 2013
    Inventors: Su Il Yum, Sung Yun Kwon, Xiaoping Song, James E. Brown
  • 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