Patents by Inventor Sangduck LEE

Sangduck 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: 11919773
    Abstract: A method is described for treating activated carbon configured to be included in a carbon block of a filter for a water purifier. The method includes: inserting the activated carbon into a chamber; injecting ozone generated from an ozone generator into the chamber, and applying pressure to the chamber; and modifying a surface of the activated carbon inserted into the chamber based on applying the pressure to the chamber that holds the ozone and the activated carbon.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 5, 2024
    Assignees: LG Electronics Inc., Inha University Research and Business Foundation
    Inventors: Yuseung Choi, Suhye Woo, Sangduck Lee, Seonghwang Kim, Soojin Park, Dongbeom Seong, Yeongrae Son
  • Publication number: 20230406727
    Abstract: A filter for a water-purification device includes a filter housing having a water inlet and a water outlet defined therein, and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet. The filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Inventors: Suhye WOO, Sangduck LEE, Yuseung CHOI, Uison HWANG
  • Patent number: 11780748
    Abstract: Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: October 10, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Suhye Woo, Sangduck Lee, Yuseung Choi, Uison Hwang
  • Patent number: 11731884
    Abstract: The present invention relates to a water purifier filter, and a water purifier including the same. The water purifier filter and the water purifier including the same according to the present invention include a filter housing including an inlet and an outlet, and a filter module provided in the filter housing to purify water introduced through the inlet and to supply the water to the outlet, and a material of the filter module includes sodium orthotitanate (Na4TiO4) to remove a heavy metal under water, thereby effectively removing a heavy metal including cadmium under water.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 22, 2023
    Assignee: LG Electronics Inc.
    Inventors: Yuseung Choi, Sangduck Lee, Suchang Cho
  • Publication number: 20230242414
    Abstract: A water purifier filter and a water purifier comprising same, according to the present invention, comprises: a filter housing including an inlet and an outlet; a filter module which is provided inside the filter housing to purify the water having flowed in through the inlet and then supply same to the outlet, wherein the filter module comprises a first filter member formed as a hollow tube and a second filter member made of a material different from that of the first filter member.
    Type: Application
    Filed: April 7, 2021
    Publication date: August 3, 2023
    Inventors: Suhye WOO, Sangduck LEE, Jongpil KIM, Uiseung CHOI
  • Publication number: 20230227328
    Abstract: A filter for a liquid purifier, comprising: a filter housing having an inlet to receive water and an outlet to discharge the water; and a filter module provided in the filter housing, and configured to purify water introduced through the inlet, and to provide the purified water to the outlet, wherein the filter module includes a carbon block having a hollow tube shape by mixing activated carbon, a binder, ferric hydroxide, and titanium oxide, and the binder is mixed at a ratio of 13% to 23% by weight.
    Type: Application
    Filed: April 7, 2021
    Publication date: July 20, 2023
    Inventors: Suhye WOO, Sangduck LEE, Jongpil KIM, Yuseung CHOI
  • Publication number: 20230191363
    Abstract: A filter for a liquid purifier may include a filter housing having an inlet and an outlet; and a filter module provided in the filter housing, and configured to purify liquid introduced through the inlet, and to supply the purified liquid to the outlet. The filter module may include an electrostatic adsorption nonwoven fabric having a hollow portion. The filter module may be configured to receive the liquid introduced through the inlet is to pass through the electrostatic adsorption nonwoven fabric and then is to discharge out of the outlet of the filter housing.
    Type: Application
    Filed: April 7, 2021
    Publication date: June 22, 2023
    Inventors: Yuseung CHOI, Sangduck LEE, Jongpil KIM, Suhye WOO
  • Patent number: 11479483
    Abstract: A filter for a water purifier includes a filter housing that defines an inlet and an outlet, and a filter module disposed inside the filter housing and configured to purify water received through the inlet and supply purified water to the outlet. The filter module includes a carbon block that includes a mixture of: activated carbon having a weight corresponding to 40 to 50% of a weight of the mixture, a binder having a weight corresponding to 5 to 15% of the weight of the mixture, iron hydroxide having a weight corresponding to 10 to 20% of the weight of the mixture, and titanium oxide having a weight corresponding to 30 to 40% of the weight of the mixture.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 25, 2022
    Assignee: LG Electronics Inc.
    Inventors: Suhye Woo, Sangduck Lee, Yuseung Choi
  • Publication number: 20210347656
    Abstract: Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.
    Type: Application
    Filed: April 27, 2021
    Publication date: November 11, 2021
    Inventors: Suhye WOO, Sangduck LEE, Yuseung CHOI, Uison HWANG
  • Publication number: 20210130198
    Abstract: A filter for a water treatment apparatus includes: a current collector; activated carbon electrodes including an active carbon coating layer that is disposed on one or both sides of the current collector and that has an uneven pattern; spacers disposed between the activated carbon electrodes; electrode plates connected to side ends of the activated carbon electrodes; and a power supply configured to supply currents through the electrode plates to the activated carbon electrodes such that neighboring activated carbon electrodes alternatively form an anode and a cathode. The filter can decrease water hardness and has a high ion removing performance because the uneven pattern increases the specific surface area and water permeability, and an ion exchange membrane is not used and the current collector has a minimized volume, leading to the minimal thickness of the electrode.
    Type: Application
    Filed: December 27, 2017
    Publication date: May 6, 2021
    Inventors: Sangduck LEE, Yuseung CHOI, Suchang CHO
  • Publication number: 20210024372
    Abstract: A filter for a water treatment apparatus includes a filter housing that defines an inlet of the filter and an outlet of the filter, and a filter module disposed inside the filter housing and configured to purify water received through the inlet and supply purified water to the outlet. The filter module includes a carbon block that has a hollow tube-shape and that comprises a mixture of activated carbon and a binder, and a non-woven fabric that surrounds an outer circumferential surface of the carbon block, the non-woven fabric comprising an electrostatic attraction material. The filter module is configured to receive water through the inlet, transmit the water through the non-woven fabric and the carbon block in sequence to thereby purify the water, and then discharge the purified water to the outlet of the filter.
    Type: Application
    Filed: May 4, 2020
    Publication date: January 28, 2021
    Inventors: Suhye WOO, Sangduck LEE, Yuseung CHOI
  • Publication number: 20210009442
    Abstract: A filter for a water purifier includes a filter housing that defines an inlet and an outlet, and a filter module disposed inside the filter housing and configured to purify water received through the inlet and supply purified water to the outlet. The filter module includes a carbon block that includes a mixture of: activated carbon having a weight corresponding to 40 to 50% of a weight of the mixture, a binder having a weight corresponding to 5 to 15% of the weight of the mixture, iron hydroxide having a weight corresponding to 10 to 20% of the weight of the mixture, and titanium oxide having a weight corresponding to 30 to 40% of the weight of the mixture.
    Type: Application
    Filed: May 8, 2020
    Publication date: January 14, 2021
    Inventors: Suhye WOO, Sangduck LEE, Yuseung CHOI
  • Publication number: 20210001256
    Abstract: A method is described for treating activated carbon configured to be included in a carbon block of a filter for a water purifier. The method includes: inserting the activated carbon into a chamber; injecting ozone generated from an ozone generator into the chamber, and applying pressure to the chamber; and modifying a surface of the activated carbon inserted into the chamber based on applying the pressure to the chamber that holds the ozone and the activated carbon.
    Type: Application
    Filed: May 29, 2020
    Publication date: January 7, 2021
    Inventors: Yuseung CHOI, Suhye WOO, Sangduck LEE, Seonghwang KIM, Soojin PARK, Dongbeom SEONG, Yeongrae SON
  • Publication number: 20200071201
    Abstract: A filter module for a water treatment apparatus, and a water treatment apparatus comprising the filter module includes: stacked active carbon fiber layers made of active carbon fiber; spacers inserted between the active carbon fiber layers; a pair of current collectors connected to an end of the stacked active carbon fiber layers; and an active carbon fiber filter included stacked one or more active carbon fiber filter units, each active carbon fiber filter unit including a power supply for supplying current to the active carbon fiber layers via the current collectors so that neighboring active carbon fiber layers form cathodes and anodes in alternation. The filter module can lower the hardness of the water while increasing ion removal capability by increasing the specific surface area and water permeability, and can minimize the thickness of the electrodes by eliminating ion exchange membranes and minimizing the volume of current collectors.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 5, 2020
    Inventors: Yuseung CHOI, Sangduck LEE, Suchang CHO
  • Publication number: 20190389740
    Abstract: The present invention relates to a water purifier filter, and a water purifier including the same. The water purifier filter and the water purifier including the same according to the present invention include a filter housing including an inlet and an outlet, and a filter module provided in the filter housing to purify water introduced through the inlet and to supply the water to the outlet, and a material of the filter module includes sodium orthotitanate (Na4TiO4) to remove a heavy metal under water, thereby effectively removing a heavy metal including cadmium under water.
    Type: Application
    Filed: December 6, 2017
    Publication date: December 26, 2019
    Inventors: Yuseung CHOI, Sangduck LEE, Suchang CHO
  • Patent number: 10399874
    Abstract: A drinking water supply device may include a filtered water pipe, a flow rate sensor, a water supply pipe, a mineral supply pipe provided with a mineral supply valve, a mineral cartridge configured to connect to the mineral supply pipe, a mineral mixer configured to connect to the water supply pipe and the mineral supply pipe and configured to allow mixing of the minerals from the mineral supply pipe with the filtered water in the water supply pipe, a pump, a discharge pipe configured to connect to the mineral mixer and the water supply pipe, and a controller configured to control an output voltage of the pump in order to adjust an amount of minerals that are supplied to the water supply pipe based on a flow rate sensed by the flow rate sensor.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 3, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangduck Lee, Kiwon Yu
  • Patent number: 10077544
    Abstract: A drinking water supply device may include a first channel configured to channel water, a water discharge pipe coupled to the rear end of the first channel configured to discharge the drinking water, a first connection pipe connecting the first channel and the water discharge pipe, a second channel configured to supply minerals to the first connection pipe, the second channel provided with a pressure sensor and a mineral supply valve, a mineral container configured to communicate with the first connection pipe via the second channel and configured to store condensed minerals, a pump configured to pressurize the interior of the mineral container to discharge the condensed minerals out of the mineral container, and a controller configured to control the mineral supply valve to open for a first predetermined time and then close according to a water discharge signal.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 18, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Myounghoon Lee, Sangduck Lee, Jinpyo Hong
  • Patent number: 10031533
    Abstract: A drinking water supply device may include a first channel configured to channel water, the first channel provided with a first valve, a flow rate sensor configured to sense a flow rate of the water, a water discharge channel connected to the rear end of the first channel, a connection pipe connecting the first channel and the water discharge channel, a second channel configured to supply minerals to the connection pipe, the second channel provided with a pressure sensor and a second valve, a mineral container configured to connect to the connection pipe via the second channel and configured to store condensed minerals, a pump configured to pressurize an interior of the mineral container to allow discharge of the condensed minerals from the mineral container, and a controller configured to control the flow rate sensor, the pressure sensor, and the first valve.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: July 24, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Changhun Jeong, Youngjin Kim, Sangduck Lee
  • Patent number: 9808751
    Abstract: The present invention relates to a complex filter and to a water purifier including a complex filter. By providing a complex filter for a water purifier including an antibacterial hollow fiber membrane, activated carbon fibers, ion-exchange fibers, and one or more activated carbon layers arranged in an optimized combination, the size of a water purifier can be reduced, and excellent water-purifying performance and an improved service life can be provided.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: November 7, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyunghee Moon, Changho Lee, Hyunhwan Oh, Sangduck Lee, Jeayoul Joung, Jeongil Kye, Min-Joung Kim
  • Publication number: 20160168827
    Abstract: A drinking water supply device may include a first channel configured to channel water, a water discharge pipe coupled to the rear end of the first channel configured to discharge the drinking water, a first connection pipe connecting the first channel and the water discharge pipe, a second channel configured to supply minerals to the first connection pipe, the second channel provided with a pressure sensor and a mineral supply valve, a mineral container configured to communicate with the first connection pipe via the second channel and configured to store condensed minerals, a pump configured to pressurize the interior of the mineral container to discharge the condensed minerals out of the mineral container, and a controller configured to control the mineral supply valve to open for a first predetermined time and then close according to a water discharge signal.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 16, 2016
    Inventors: Myounghoon LEE, Sangduck LEE, Jinpyo HONG