Patents by Inventor Doojin Lee

Doojin Lee 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: 11247975
    Abstract: Embodiments provide a process for purifying an alkylene oxide composition, which comprises (1) obtaining a crude alkylene oxide composition comprising an ionic component; (2) passing the crude alkylene oxide composition through a molecular sieve; and (3) obtaining a purified alkylene oxide composition. A purified alkylene oxide composition suitable for a subsequent process can be obtained.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: February 15, 2022
    Assignee: SK PICGLOBAL CO., LTD
    Inventors: Hanna Kim, Doojin Lee, Eun Su Lee, Taechan Ha, Dong Kyun Noh, Soo Hyun Park, Sungho Kim
  • Publication number: 20210291159
    Abstract: An integrated system for sampling and processing a liquid suspension, the system comprising: a cartridge member comprising a sampling port on a first end of the cartridge member, a second one-way valve in communication with the sampling port, a stopper at a second end of the cartridge member, and a fluid chamber between the second one-way valve and the stopper; a body member having a first end configured to accept the first end of the cartridge member and a second end opposite the first end of the body member; and a cap unit disposed on the second end of the body member, the cap unit comprising a wash chamber, wherein the cap unit comprises a first one-way valve between the second end of the body member and the wash chamber and a filter between the first one-way valve and the wash chamber or a filter between the second end of the body member and the wash chamber and a first one-way valve between the filter and the wash chamber.
    Type: Application
    Filed: May 18, 2018
    Publication date: September 23, 2021
    Inventors: Kazumi Toda-Peters, Amy Shen Fried, Shivani Sathish, Doojin Lee, Casey James Galvin, Kei Funakoshi
  • Publication number: 20210246111
    Abstract: Embodiments provide a process for purifying an alkylene oxide composition, which comprises (1) obtaining a crude alkylene oxide composition comprising an ionic component; (2) passing the crude alkylene oxide composition through a molecular sieve; and (3) obtaining a purified alkylene oxide composition. A purified alkylene oxide composition suitable for a subsequent process can be obtained.
    Type: Application
    Filed: July 16, 2018
    Publication date: August 12, 2021
    Applicant: SK Picglobal Co., Ltd.
    Inventors: Hanna KIM, Doojin LEE, Eun Su LEE, Taechan HA, Dong Kyun NOH, Soo Hyun PARK, Sungho KIM
  • Patent number: 11009440
    Abstract: A temperature-controllable microfluidic device includes: a microfluidic channel generally extending in a first direction for passing a specimen fluid; a microheater disposed along the microfluidic channel, the microheater being made of a resistive wire having a pair of serpentine-shaped portions generally extending in the first direction along respective sides of the microfluidic channel; and a temperature sensor disposed along the microfluidic channel, the temperature sensor being made of a resistive wire having a pair of serpentine-shaped portions generally extending in the first direction along the respective sides of the microfluidic channel.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: May 18, 2021
    Assignee: OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION
    Inventors: Doojin Lee, Amy Shen Fried
  • Publication number: 20190187034
    Abstract: A temperature-controllable microfluidic device includes: a microfluidic channel generally extending in a first direction for passing a specimen fluid; a microheater disposed along the microfluidic channel, the microheater being made of a resistive wire having a pair of serpentine-shaped portions generally extending in the first direction along respective sides of the microfluidic channel; and a temperature sensor disposed along the microfluidic channel, the temperature sensor being made of a resistive wire having a pair of serpentine-shaped portions generally extending in the first direction along the respective sides of the microfluidic channel.
    Type: Application
    Filed: June 20, 2017
    Publication date: June 20, 2019
    Applicant: OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION
    Inventors: Doojin Lee, Amy Shen Fried
  • Patent number: 9574829
    Abstract: Provided is a system for recovering waste heat discharged from distillation columns, incinerators, blast columns, smelting columns, and the like at relatively low temperatures to produce hot water in high efficiency, which can be used in various industrial fields. The investment and operating costs of the waste heat recovery system are relatively low as compared with the conventional systems.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 21, 2017
    Assignee: SKC CO., LTD.
    Inventors: Hojin Yang, Kidon Won, Juntae Kim, Doojin Lee, Soo Hyun Park
  • Publication number: 20120267076
    Abstract: Provided is a system for recovering waste heat discharged from distillation columns, incinerators, blast columns, smelting columns, and the like at relatively low temperatures to produce hot water in high efficiency, which can be used in various industrial fields. The investment and operating costs of the waste heat recovery system are relatively low as compared with the conventional systems.
    Type: Application
    Filed: November 30, 2010
    Publication date: October 25, 2012
    Applicant: SKC CO., LTD
    Inventors: Hojin Yang, Kidon Won, Juntae Kim, Doojin Lee, Soo Hyun Park