Patents by Inventor Doo-Won Han
Doo-Won Han 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).
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Publication number: 20240132386Abstract: The present invention relates to a water treatment device, and more specifically to a water purifier capable of removing scale in a simple manner.Type: ApplicationFiled: October 12, 2023Publication date: April 25, 2024Applicant: COWAY Co., Ltd.Inventors: Si Jun PARK, Hyun Suk MOON, Sang-Young LEE, Doo Won HAN, Jung Chul PARK, In Du CHOI
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Publication number: 20240067535Abstract: A water purifier includes: a filter module for providing purified water by filtering raw water; a fitting valve module detachably fastened to the filter module to provide at least one of a flow path for a flow of raw water supplied to the filter module and a flow path for a flow of the purified water discharged from the filter module; and a frame including a valve support for movably supporting the fitting valve module to be movable. The fitting valve module is selectively placed in a separated state in which the fitting valve module is separated from the filter module by moving in a direction away from the filter module, or a coupled state in which the fitting valve module coupled to the filter module by moving toward the filter module.Type: ApplicationFiled: December 30, 2021Publication date: February 29, 2024Applicant: COWAY CO., LTD.Inventors: Ki Hong MIN, Man Uk PARK, Yong Yeon NOH, Dae Hwan KIM, Doo Won HAN
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Patent number: 11266953Abstract: A reverse osmosis filtering module includes: a purified water discharge pipe in which a purified water discharge path is formed, and which has a communication hole that is formed on an outer periphery thereof and communicates with the purified water discharge path; a reverse osmosis filtering part including a reverse osmosis filtering member in which a purified water flow space is formed, and which is wound around the purified water discharge pipe such that the purified water flow space communicates with the communication hole; a first flow channel formation cap provided at one side and having an inlet hole; and a second flow channel formation cap provided at the other side of the reverse osmosis filtering part and having an outlet hole.Type: GrantFiled: October 11, 2018Date of Patent: March 8, 2022Assignees: COWAY CO., LTD., TORAY ADVANCED MATERIALS KOREA INC.Inventors: Sung-Kon Cho, Sung-Han Yun, Hae-Sun Lee, Sun-Yong Lee, Sang-Hyeon Kang, Doo-Won Han, In-Tak Lee, Gi-Lyang Kim, Dong-Gyu Kim, Kang-Jin Kim, Jong-Kwan Kim, Jae-Hoon Moon, Hee-Kyung Lee
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Patent number: 9725347Abstract: Disclosed is a water treatment apparatus that includes a head including an inlet portion into which water flows, an outlet portion from which water is discharged externally, and a connection portion connected to the inlet portion and the outlet portion, and a water treatment unit connected to the connection portion, including a plurality of water treatment sections, coupled to the head, and configured such that a portion of the water flowing into the inlet portion passes through the plurality of water treatment sections and sequentially, the remainder of the water passes through only a portion of the plurality of water treatment sections and, and the water flows to the outlet portion together.Type: GrantFiled: November 4, 2013Date of Patent: August 8, 2017Assignee: Coway Co., Ltd.Inventors: Jun-Young Lee, Doo-Won Han, Hyun-Chul Lee, Geun-Sang Ryu, Sung-Han Yun, Soon-Ho Lim, Seo-Young Kim
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Publication number: 20160200612Abstract: Disclosed is a water treatment apparatus that includes a head including an inlet portion into which water flows, an outlet portion from which water is discharged externally, and a connection portion connected to the inlet portion and the outlet portion, and a water treatment unit connected to the connection portion, including a plurality of water treatment sections, coupled to the head, and configured such that a portion of the water flowing into the inlet portion passes through the plurality of water treatment sections and sequentially, the remainder of the water passes through only a portion of the plurality of water treatment sections and, and the water flows to the outlet portion together.Type: ApplicationFiled: November 4, 2013Publication date: July 14, 2016Inventors: Jun-Young LEE, Doo-Won HAN, Hyun-Chul LEE, Geun-Sang RYU, Sung-Han YUN, Soon-Ho LIM, Seo-Young KIM
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Patent number: 9266043Abstract: Disclosed is a filter cartridge. The filter cartridge includes an inner filter in the form of an approximately cylindrical corrugated membrane, an outer filter in the form of an approximately cylindrical corrugated membrane, the outer filter having a diameter greater than that of the inner filter and being installed around the inner filter, and at least one holder to support the inner filter and the outer filter.Type: GrantFiled: September 7, 2011Date of Patent: February 23, 2016Assignee: COWAY CO., LTDInventors: Doo-Won Han, Dae-Hwan Kim, Sang-Hyeon Kang
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Publication number: 20130299410Abstract: Disclosed herein is a spiral wound type filter cartridge and more specifically, a spiral wound type filter cartridge in which activated carbon fiber is provided. The inside of spiral wound type filter cartridge is capable of serving as a carbon filter in a water purifier, thus eliminating the necessity of the use of any carbon filter for pre- or post-treatment in the process of purifying raw water, reducing an overall size of the water purifier and considerably reducing costs associated therewith.Type: ApplicationFiled: July 11, 2013Publication date: November 14, 2013Applicant: COWAY CO., LTD.Inventors: Sun-Yong LEE, Doo-Won HAN, Youn-Kook KIM, Hyoung-Jun AHN, Eu-Jean MOON, Suk-Young LEE
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Publication number: 20130213878Abstract: Disclosed is a filter cartridge. The filter cartridge includes an inner filter in the form of an approximately cylindrical corrugated membrane, an outer filter in the form of an approximately cylindrical corrugated membrane, the outer filter having a diameter greater than that of the inner filter and being installed around the inner filter, and at least one holder to support the inner filter and the outer filter.Type: ApplicationFiled: September 7, 2011Publication date: August 22, 2013Applicant: COWAY CO., LTD.Inventors: Doo-Won Han, Dae-Hwan Kim, Sang-Hyeon Kang
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Patent number: 8506807Abstract: Disclosed herein is a spiral wound type filter cartridge and more specifically, a spiral wound type filter cartridge in which activated carbon fiber is provided. The inside of spiral wound type filter cartridge is capable of serving as a carbon filter in a water purifier, thus eliminating the necessity of the use of any carbon filter for pre- or post-treatment in the process of purifying raw water, reducing an overall size of the water purifier and considerably reducing costs associated therewith.Type: GrantFiled: December 18, 2008Date of Patent: August 13, 2013Assignee: Woongjincoway Co., Ltd.Inventors: Sun-Yong Lee, Doo-Won Han, Youn-Kook Kim, Hyoung-Jun Ahn, Eu-Jean Moon, Suk-Young Lee
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Publication number: 20110062076Abstract: Disclosed herein is a spiral wound type filter cartridge and more specifically, a spiral wound type filter cartridge in which activated carbon fiber is provided. The inside of spiral wound type filter cartridge is capable of serving as a carbon filter in a water purifier, thus eliminating the necessity of the use of any carbon filter for pre- or post-treatment in the process of purifying raw water, reducing an overall size of the water purifier and considerably reducing costs associated therewith.Type: ApplicationFiled: December 18, 2008Publication date: March 17, 2011Applicant: WOONGJINCOWAY CO., LTD.Inventors: Sun-Yong Lee, Doo-Won Han, Youn-Kook Kim, Hyoung-Jun Ahn, Eu-Jean Moon, Suk-Young Lee
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Patent number: 7766173Abstract: An amine aqueous solution for forming an active layer of a polyamide reverse osmosis composite membrane is prepared, which consists of 0.1 through 20 weight % of polyfunctional aromatic amine monomer, 0.1 through 20 weight % of multi-functional tertiary alcohol amine, 0.1 through 20 weight % of strong acid, and 40 through 99.7 weight % of water.Type: GrantFiled: August 24, 2005Date of Patent: August 3, 2010Assignee: Woongjincoway Co., Ltd.Inventors: Moo-Kyung Moon, Je-Kang Yoo, Sun-Yong Lee, Youn-Kook Kim, Hyoung-Jun Ahn, Doo-Won Han
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Publication number: 20080237118Abstract: An amine aqueous solution for forming an active layer of a polyamide reverse osmosis composite membrane is prepared, which consists of 0.1 through 20 weight % of polyfunctional aromatic amine monomer, 0.1 through 20 weight % of multi-functional tertiary alcohol amine, 0.1 through 20 weight % of strong acid, and 40 through 99.7 weight % of water.Type: ApplicationFiled: August 24, 2005Publication date: October 2, 2008Inventors: Moo-Kyung Moon, Je-Kang Yoo, Sun-Yong Lee, Youn-Kook Kim, Hyoung-Jun Ahn, Doo-Won Han