Patents by Inventor Sohyung Cho

Sohyung Cho 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).

  • NOVEL SYRINGE SYSTEM FOR FLUID SEPARATION
    Publication number: 20200360609
    Abstract: A syringe device and methods for device for separating liquids of different densities are provided where the syringe device includes a hollow syringe barrel, a perforated plunger seal with a seal hole, and a hollow plunging tube with a closed bottom with at least one tube hole.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 19, 2020
    Applicant: Board of Trustees of Southern Illinois University
    Inventors: Ashim Gupta, Michael W. Neumeister, Sohyung Cho, Scott Moore, Robert B. Zajeski, JR.
  • Syringe system for fluid separation
    Patent number: 10774301
    Abstract: A syringe device for separating liquids of different densities is provided with a hollow syringe barrel, a perforated plunger seal with a seal hole, and a hollow plunging tube with a closed bottom with at least one tube hole. The perforated plunger seal has an outer perimeter that resides flush against an interior surface of the hollow syringe barrel. The tube hole is in operational relationship with the seal hole. Optionally, a relief hole is provided on a top portion of the hollow plunging tube to allow a user to create vacuum pressure as necessary.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: September 15, 2020
    Assignee: Board of Trustees of Southern Illinois University
    Inventors: Ashim Gupta, Michael W. Neumeister, Sohyung Cho
  • NOVEL SYRINGE SYSTEM FOR FLUID SEPARATION
    Publication number: 20180010086
    Abstract: A syringe device for separating liquids of different densities is provided with a hollow syringe barrel, a perforated plunger seal with a seal hole, and a hollow plunging tube with a closed bottom with at least one tube hole. The perforated plunger seal has an outer perimeter that resides flush against an interior surface of the hollow syringe barrel. The tube hole is in operational relationship with the seal hole. Optionally, a relief hole is provided on a top portion of the hollow plunging tube to allow a user to create vacuum pressure as necessary.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 11, 2018
    Applicant: Board of Trustees of Southern Illinois University
    Inventors: Ashim Gupta, Michael W. Neumeister, Sohyung Cho