Patents by Inventor Roger Wongjung Liu

Roger Wongjung Liu 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: 8579855
    Abstract: A method of storing and delivery a drug, such as by lyophilizing and reconstituting, comprises performing both storing and delivering with the same container closure assembly. The container closure is assembled in a preparation configuration during which lyophilization occurs. After lyophilizing, the powdered drug is forced into a spiral channel in the container closure assembly by a plunger. The plunger leaves substantially no head space for the powdered drug, and the assembly is sealed thereby now being in the storage configuration. For delivery of the stored powdered drug, a syringe of diluent is introduced to the container assembly thereby changing the assembly to the delivery configuration. The spiral channel is continuous between an input end and a delivery end with the delivery end being in fluid communication with a delivery outlet of the assembly. The assembly includes a diluent flow path that forces the diluent into a spiral channel at only the input end.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 12, 2013
    Inventors: Byeong Seon Chang, Roger Wongjung Liu
  • Publication number: 20110288531
    Abstract: A method of storing and delivery a drug, such as by lyophilizing and reconstituting, comprises performing both storing and delivering with the same container closure assembly. The container closure is assembled in a preparation configuration during which lyophilization occurs. After lyophilizing, the powdered drug is forced into a spiral channel in the container closure assembly by a plunger. The plunger leaves substantially no head space for the powdered drug, and the assembly is sealed thereby now being in the storage configuration. For delivery of the stored powdered drug, a syringe of diluent is introduced to the container assembly thereby changing the assembly to the delivery configuration. The spiral channel is continuous between an input end and a delivery end with the delivery end being in fluid communication with a delivery outlet of the assembly. The assembly includes a diluent flow path that forces the diluent into a spiral channel at only the input end.
    Type: Application
    Filed: June 13, 2011
    Publication date: November 24, 2011
    Inventors: Byeong Seon Chang, Roger Wongjung Liu
  • Patent number: 7959600
    Abstract: A container closure delivery system that is suitable for lyophilized pharmaceutical injectable powder products is disclosed. The system comprises storage stable powder formulations and a container closure assembly design wherein the formulation can be filled and lyophilized with a standard fill finish equipment, and the formulations and lyophilization processes are optimized to produce a powder that readily dissolves upon contact with a diluent, thereby facilitating the direct injection of the lyophilized product without the need for a separate reconstitution/mixing/priming step.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: June 14, 2011
    Inventors: Byeong Seon Chang, Roger Wongjung Liu
  • Patent number: D821572
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: June 26, 2018
    Assignee: MedImmune, LLC
    Inventors: Corbin Zean Clawson, Roger Wongjung Liu, Janardhanan Anand Subramony
  • Patent number: D822199
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: July 3, 2018
    Assignee: MedImmune, LLC
    Inventors: Corbin Zean Clawson, Roger Wongjung Liu, Janardhanan Anand Subramony
  • Patent number: D878563
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 17, 2020
    Assignee: MedImmune, LLC.
    Inventors: Corbin Zean Clawson, Roger Wongjung Liu, Janardhanan Anand Subramony
  • Patent number: D878564
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 17, 2020
    Assignee: MedImmune, LLC.
    Inventors: Corbin Zean Clawson, Roger Wongjung Liu, Janardhanan Anand Subramony