Patents by Inventor Doug-Youn Lee

Doug-Youn 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: 11565246
    Abstract: The devices, systems and techniques disclosed in this patent document include photocatalytic filter devices and can be used to provide a method for manufacturing a photocatalytic filter with improved adhesion. In addition, the present disclosure of this patent document includes technology to provide a method for reactivating a photocatalytic filter. Using the disclosed techniques, even if a photocatalytic filter is contaminated, the contaminated photocatalytic filter is easily reactivated while maintaining improved adhesion.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: January 31, 2023
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Daewoong Suh, Jaeseon Yi, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon
  • Publication number: 20190201883
    Abstract: The devices, systems and techniques disclosed in this patent document include photocatalytic filter devices and can be used to provide a method for manufacturing a photocatalytic filter with improved adhesion. In addition, the present disclosure of this patent document includes technology to provide a method for reactivating a photocatalytic filter. Using the disclosed techniques, even if a photocatalytic filter is contaminated, the contaminated photocatalytic filter is easily reactivated while maintaining improved adhesion.
    Type: Application
    Filed: February 25, 2019
    Publication date: July 4, 2019
    Inventors: Daewoong SUH, Jaeseon YI, Geundo CHO, Doug Youn LEE, Hye Kyung KU, Kyung Sik YOON
  • Patent number: 10213779
    Abstract: The devices, systems and techniques disclosed in this patent document include photocatalytic filter devices and can be used to provide a method for manufacturing a photocatalytic filter with improved adhesion. In addition, the present disclosure of this patent document includes technology to provide a method for reactivating a photocatalytic filter. Using the disclosed techniques, even if a photocatalytic filter is contaminated, the contaminated photocatalytic filter is easily reactivated while maintaining improved adhesion.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: February 26, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Daewoong Suh, Jaeseon Yi, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon
  • Publication number: 20180029017
    Abstract: An photocatalytic filter is provided to include a support; and a photocatalytic material coated on the support to cause a photocatalytic reaction to degrade an undesired gas present in an air, and wherein the photocatalytic filter has cells with a width equal to or less than 2 mm, thereby providing an air resistance in a direction facing UV LED for the photocatalytic activation, the air flow having a minimized air resistance.
    Type: Application
    Filed: August 25, 2017
    Publication date: February 1, 2018
    Inventors: Jaeseon Yi, Daewoong Suh, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon, JiWon Kim, JaeHak Jeong
  • Publication number: 20160089660
    Abstract: The present disclosure relates to a photocatalytic filter, the surface of which has enhanced adsorption performance so that mixed gases including a gas that reacts later in a competitive reaction can be degraded from the initial stage of a photocatalytic reaction, and to a manufacturing method thereof. The method includes: dispersing carbon dioxide (TiO2) nanopowder as a photocatalyst and one or more metal compounds in water to prepare a photocatalytic dispersion; coating a support with the photocatalytic dispersion; drying the coated support; and sintering the dried support. The photocatalytic filter includes a support, and a photocatalyst and one or more metal compounds, which are coated on the support.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Inventors: Jaeseon Yi, Daewoong Suh, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon
  • Publication number: 20160089659
    Abstract: The present disclosure relates to a photocatalytic filter, the surface of which has enhanced adsorption performance so that mixed gases including a gas that reacts later in a competitive reaction can be degraded from the initial stage of a photocatalytic reaction, and to a manufacturing method thereof. The method includes: dispersing carbon dioxide (TiO2) nanopowder as a photocatalyst and one or more metal compounds in water to prepare a photocatalytic dispersion; coating a support with the photocatalytic dispersion; drying the coated support; and sintering the dried support. The photocatalytic filter includes a support, and a photocatalyst and one or more metal compounds, which are coated on the support. The metal compounds include nanopowers of an iron (Fe) compound.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Inventors: Jaeseon Yi, Daewoong Suh, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon
  • Publication number: 20160067698
    Abstract: The devices, systems and techniques disclosed in this patent document include photocatalytic filter devices and can be used to provide a method for manufacturing a photocatalytic filter with improved adhesion. In addition, the present disclosure of this patent document includes technology to provide a method for reactivating a photocatalytic filter. Using the disclosed techniques, even if a photocatalytic filter is contaminated, the contaminated photocatalytic filter is easily reactivated while maintaining improved adhesion.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 10, 2016
    Inventors: Daewoong Suh, Jaeseon Yi, Geundo Cho, Doug Youn Lee, Hye Kyung Ku, Kyung Sik Yoon
  • Publication number: 20100028409
    Abstract: A barrier membrane for guided bone regeneration and a method of manufacturing the same are provided. The barrier membrane for guided bone regeneration that is made of silver, gold, or gold alloy includes a substrate having texture including protrusions with a predetermined shape, a polymer layer formed by coating an upper surface of the substrate with polymer solution, and a bio-ceramic layer formed by coating a lower surface of the substrate. It is possible for the barrier membrane for guided bone regeneration to secure biocompatibility, exclusion and sealing of cells, space maintenance, connectivity with tissues, and easiness of using the barrier membrane which are required for guided bone/tissue regeneration (GBR/GTR).
    Type: Application
    Filed: March 17, 2008
    Publication date: February 4, 2010
    Applicant: YESBIO CO., LTD.
    Inventors: Doug-Youn Lee, Sang-Bae Lee, Kyeong-Jun Park, Jeong-Jong Park
  • Patent number: 7449498
    Abstract: The present invention relates to composite materials for bone replacement comprising organic and inorganic material, more particularly to composite materials for bone replacement wherein cyanoacrylate as organic material and osteo-conductive inorganic material as inorganic material are combined. The composite materials synthesized according to the present invention, maximize the merits of organic material and inorganic material and minimize their demerits. In detail, the organic material has the maintenance of shape and the adhesive property and the inorganic material has the osteo-conductivity on a new bone. Therefore, the composite materials of the present invention can be applied to fill bone defects and replace bones, since they retain the excellent physical property.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: November 11, 2008
    Assignee: Yesbio Co., Ltd.
    Inventors: Kyeong-Jun Park, Doug-Youn Lee, Sang-Bae Lee, Jeong-Jong Park, Ji-Ho Park, Kyoung-Nam Kim, Kwang-Mahn Kim
  • Publication number: 20060276562
    Abstract: The present invention relates to composite materials for bone replacement comprising organic material and inorganic material, more particularly to composite materials for bone displacement wherein cyanoacrylate as organic material and osteo-conductive inorganic material as inorganic material are combined. The composite materials synthesized according to the present invention, maximize the merits of organic material and inorganic material and minimize their demerits. In detail, the organic material has the maintenance of shape and the adhesive property and the inorganic material has the osteo-conductivity on a new bone. Therefore, the composite materials of the present invention can be applied to fill bone defects and replace bones, since they retain the excellent physical property.
    Type: Application
    Filed: December 8, 2005
    Publication date: December 7, 2006
    Inventors: Kyeong-Jun Park, Doug-Youn Lee, Sang-Bae Lee, Jeong-Jong Park, Ji-Ho Park, Kyoung-Nam Kim, Kwang-Mahn Kim
  • Patent number: D764040
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 16, 2016
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Geun-Do Cho, Doug-Youn Lee, Yun-Hee Lee, Hye-Kyung Ku, Seong-Min Lee, Jae-Seon Lee