Patents by Inventor Woo-nyoung Lee

Woo-nyoung 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).

  • Publication number: 20210366405
    Abstract: An electronic device includes a first source group and a second source group, each of which includes a plurality of source channels, and a gamma block that receives first to 2i-th initial voltages (i being an integer of 1 or more), outputs first to 2i-th intermediate voltages by amplifying the first to i-th initial voltages, and outputs first to i-th gamma voltages to the first source group by buffering the first to 2i-th intermediate voltages, and a first buffer block that receives the first to 2i-th intermediate voltages from the gamma block and buffers the first to 2i-th intermediate voltages so as to be output to the second source group, and the gamma block may include a first resistor string including a plurality of resistors connected between nodes from which the first to i-th gamma voltages are output.
    Type: Application
    Filed: December 1, 2020
    Publication date: November 25, 2021
    Inventors: In-Suk KIM, Jungmoon KIM, Woo-Nyoung LEE
  • Patent number: 11071950
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a filtration membrane; a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame; a sliding portion disposed in the treatment tank, connected to the reciprocating portion, and guiding a moving direction of the membrane support frame; and a sludge lifting portion flexibly disposed at a lower end of the membrane support frame to lift sludge accumulated at a lower part of the treatment tank.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: July 27, 2021
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventor: Woo Nyoung Lee
  • Patent number: 10967309
    Abstract: Disclosed herein is a water purifying system, including: a raw water tank configured to store raw water; a filter unit configured to include a plurality of filtration modules for purifying the raw water and a plurality of valves for feeding or cutting off the raw water; a raw water pump configured to feed the raw water from the raw water tank to the filter unit; and a backwash module configured to feed backwash water to the filter unit, in which some of permeate water permeated by the filter unit is fed to the backwash module to be used as the backwash water and a feed pressure of the backwash water is fed by the raw water pump.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: April 6, 2021
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Woo Nyoung Lee, Sung Won Park
  • Patent number: 10829392
    Abstract: The present disclosure relates to a dissolved air flotation system using ambient air, and more particularly, to a dissolved air flotation system that is capable of allowing ambient air to be introduced in front of a pump to generate micro air bubbles with the water discharged from the pump, so that the ambient air may be used instead of compressed air.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 10, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Woo Nyoung Lee, Sung Won Park, Byungsung Park
  • Patent number: 10730019
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a separation membrane; a separation membrane module mounted on the membrane support frame; a vane member disposed at a lower end of the membrane support frame and provided to lift sludge accumulated at a lower part of the treatment tank; and a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame, in which the separation membrane module includes an upper frame and a lower frame and a hollow fiber membrane installed between the upper frame and the lower frame.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 4, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Woo Nyoung Lee
  • Patent number: 10668433
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a filtered-water discharge part discharging filtered water that has been filtered via the separation membrane module. The filtered-water discharge part is formed to be movable or stretchable in response to a reciprocating motion of the membrane support frame.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 2, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Woo Nyoung Lee
  • Patent number: 10668434
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a control part controlling a reciprocating distance or frequency of the separation membrane module.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 2, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Woo Nyoung Lee
  • Patent number: 10639589
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath. The separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane provided between the upper frame and the lower frame.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 5, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd.
    Inventor: Woo Nyoung Lee
  • Publication number: 20200030749
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a separation membrane; a separation membrane module mounted on the membrane support frame; a vane member disposed at a lower end of the membrane support frame and provided to lift sludge accumulated at a lower part of the treatment tank; and a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame, in which the separation membrane module includes an upper frame and a lower frame and a hollow fiber membrane installed between the upper frame and the lower frame.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 30, 2020
    Inventor: Woo Nyoung LEE
  • Publication number: 20190381461
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a filtration membrane; a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame; a sliding portion disposed in the treatment tank, connected to the reciprocating portion, and guiding a moving direction of the membrane support frame; and a sludge lifting portion flexibly disposed at a lower end of the membrane support frame to lift sludge accumulated at a lower part of the treatment tank.
    Type: Application
    Filed: September 2, 2019
    Publication date: December 19, 2019
    Inventor: Woo Nyoung LEE
  • Patent number: 10471392
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a separation membrane; a separation membrane module mounted on the membrane support frame; a vane member disposed at a lower end of the membrane support frame and provided to lift sludge accumulated at a lower part of the treatment tank; and a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame, in which the separation membrane module includes an upper frame and a lower frame and a hollow fiber membrane installed between the upper frame and the lower frame.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 12, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Woo Nyoung Lee
  • Patent number: 10434474
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a filtration membrane; a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame; a sliding portion disposed in the treatment tank, connected to the reciprocating portion, and guiding a moving direction of the membrane support frame; and a sludge lifting portion flexibly disposed at a lower end of the membrane support frame to lift sludge accumulated at a lower part of the treatment tank.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: October 8, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Woo Nyoung Lee
  • Publication number: 20190262747
    Abstract: Disclosed herein is a water purifying system, including: a raw water tank configured to store raw water; a filter unit configured to include a plurality of filtration modules for purifying the raw water and a plurality of valves for feeding or cutting off the raw water; a raw water pump configured to feed the raw water from the raw water tank to the filter unit; and a backwash module configured to feed backwash water to the filter unit, in which some of permeate water permeated by the filter unit is fed to the backwash module to be used as the backwash water and a feed pressure of the backwash water is fed by the raw water pump.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 29, 2019
    Inventors: Woo Nyoung LEE, Sung Won PARK
  • Patent number: 10322361
    Abstract: Disclosed herein is a water purifying system, including: a raw water tank configured to store raw water; a filter unit configured to include a plurality of filtration modules for purifying the raw water and a plurality of valves for feeding or cutting off the raw water; a raw water pump configured to feed the raw water from the raw water tank to the filter unit; and a backwash module configured to feed backwash water to the filter unit, in which some of permeate water permeated by the filter unit is fed to the backwash module to be used as the backwash water and a feed pressure of the backwash water is fed by the raw water pump.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: June 18, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Woo Nyoung Lee, Sung Won Park
  • Publication number: 20180147536
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath. The separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane provided between the upper frame and the lower frame.
    Type: Application
    Filed: July 21, 2017
    Publication date: May 31, 2018
    Inventor: Woo Nyoung LEE
  • Publication number: 20180147539
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a filtration membrane; a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame; a sliding portion disposed in the treatment tank, connected to the reciprocating portion, and guiding a moving direction of the membrane support frame; and a sludge lifting portion flexibly disposed at a lower end of the membrane support frame to lift sludge accumulated at a lower part of the treatment tank.
    Type: Application
    Filed: September 1, 2017
    Publication date: May 31, 2018
    Inventor: Woo Nyoung LEE
  • Publication number: 20180147540
    Abstract: A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a separation membrane; a separation membrane module mounted on the membrane support frame; a vane member disposed at a lower end of the membrane support frame and provided to lift sludge accumulated at a lower part of the treatment tank; and a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame, in which the separation membrane module includes an upper frame and a lower frame and a hollow fiber membrane installed between the upper frame and the lower frame.
    Type: Application
    Filed: September 1, 2017
    Publication date: May 31, 2018
    Inventor: Woo Nyoung LEE
  • Publication number: 20180147537
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a filtered-water discharge part discharging filtered water that has been filtered via the separation membrane module. The filtered-water discharge part is formed to be movable or stretchable in response to a reciprocating motion of the membrane support frame.
    Type: Application
    Filed: July 21, 2017
    Publication date: May 31, 2018
    Inventor: Woo Nyoung LEE
  • Publication number: 20180147538
    Abstract: A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a control part controlling a reciprocating distance or frequency of the separation membrane module.
    Type: Application
    Filed: July 21, 2017
    Publication date: May 31, 2018
    Inventor: Woo Nyoung LEE
  • Publication number: 20170121185
    Abstract: The present disclosure relates to a dissolved air flotation system using ambient air, and more particularly, to a dissolved air flotation system that is capable of allowing ambient air to be introduced in front of a pump to generate micro air bubbles with the water discharged from the pump, so that the ambient air may be used instead of compressed air.
    Type: Application
    Filed: August 1, 2016
    Publication date: May 4, 2017
    Inventors: Woo Nyoung LEE, Sung Won PARK, Byungsung PARK