Patents by Inventor Ho-Seok Jeon
Ho-Seok Jeon 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: 20240110010Abstract: The present invention relates to a method for producing a polyimide powder, particularly to a method for producing a polyimide powder, which includes a) preparing a dispersion by dispersing a dianhydride and a diamine in distilled water; and b) introducing the dispersion of step a) into a reactor and conducting the reaction at a stirring speed of 300 rpm or more under temperature and pressure conditions. In the present invention, it is possible to improve physical properties and control the particle size and dispersibility without additional processes by using water-based polymerization and controlling the stirring speed in the production process.Type: ApplicationFiled: December 28, 2020Publication date: April 4, 2024Inventors: Ho Sung LEE, Ik Sang LEE, Jin Seok JEON
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Patent number: 11807544Abstract: Provided are a selective recovery method of vanadium and cesium from a waste sulfuric acid vanadium catalyst by a hydrometallurgical method including water leaching, solid-liquid separation, vanadium solvent extraction, vanadium selective stripping, and cesium alum production, and a high-quality vanadium aqueous solution and cesium alum produced thereby.Type: GrantFiled: September 8, 2022Date of Patent: November 7, 2023Assignee: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCESInventors: Ho Seok Jeon, Shun Myung Shin, Dong Ju Shin, Dong Seok Lee, Sung Ho Joo
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Publication number: 20230138828Abstract: Provided are a selective recovery method of vanadium and cesium from a waste sulfuric acid vanadium catalyst by a hydrometallurgical method including water leaching, solid-liquid separation, vanadium solvent extraction, vanadium selective stripping, and cesium alum production, and a high-quality vanadium aqueous solution and cesium alum produced thereby.Type: ApplicationFiled: September 8, 2022Publication date: May 4, 2023Applicant: Korea Institute Of Geoscience And Mineral ResourcesInventors: Ho Seok JEON, Shun Myung SHIN, Dong Ju SHIN, Dong Seok LEE, Sung Ho JOO
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Patent number: 9950343Abstract: Provided is a dry separation apparatus including: a main body; a first deck; a plurality of guides; a supply part; an air blow fan; and a vibration part. A dry separation method includes: supplying an object to be separated to a top surface of a first deck provided with a plurality of punches; sending, by an air blow fan, air to the punches (first punches); and horizontally vibrating, by a vibration part, the first deck so as to discharge particles which have different specific gravities of the object to be separated and a moveable force exerted by air passing the first punches through different passages.Type: GrantFiled: December 19, 2016Date of Patent: April 24, 2018Assignee: Korea Institute of Geoscience and Mineral ResourcesInventors: Byoung-Gon Kim, Ho-Seok Jeon, Jeong Yun Kim, Soo Bok Jeong, Davaasuren Jambal
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Publication number: 20170113251Abstract: Provided is a dry separation apparatus including: a main body; a first deck; a plurality of guides; a supply part; an air blow fan; and a vibration part. A dry separation method includes: supplying an object to be separated to a top surface of a first deck provided with a plurality of punches; sending, by an air blow fan, air to the punches (first punches); and horizontally vibrating, by a vibration part, the first deck so as to discharge particles which have different specific gravities of the object to be separated and a moveable force exerted by air passing the first punches through different passages.Type: ApplicationFiled: December 19, 2016Publication date: April 27, 2017Inventors: Byoung-Gon KIM, Ho-Seok JEON, Jeong Yun KIM, Soo Bok JEONG, Davaasuren JAMBAL
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Patent number: 9566614Abstract: Provided is a dry separation apparatus including: a main body; a first deck; a plurality of guides; a supply part; an air blow fan; and a vibration part. A dry separation method includes: supplying an object to be separated to a top surface of a first deck provided with a plurality of punches; sending, by an air blow fan, air to the punches (first punches); and horizontally vibrating, by a vibration part, the first deck so as to discharge particles which have different specific gravities of the object to be separated and a moveable force exerted by air passing the first punches through different passages.Type: GrantFiled: September 11, 2013Date of Patent: February 14, 2017Assignee: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCESInventors: Byoung-Gon Kim, Ho-Seok Jeon, Jeong Yun Kim, Soo Bok Jeong, Davaasuren Jambal
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Publication number: 20160023246Abstract: Provided is a dry separation apparatus including: a main body; a first deck; a plurality of guides; a supply part; an air blow fan; and a vibration part. A dry separation method includes: supplying an object to be separated to a top surface of a first deck provided with a plurality of punches; sending, by an air blow fan, air to the punches (first punches); and horizontally vibrating, by a vibration part, the first deck so as to discharge particles which have different specific gravities of the object to be separated and a moveable force exerted by air passing the first punches through different passages.Type: ApplicationFiled: September 11, 2013Publication date: January 28, 2016Inventors: Byoung-Gon KIM, Ho-Seok JEON, Jeong Yun KIM, Soo Bok JEONG, Davaasuren JAMBAL
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Patent number: 8689741Abstract: The present invention features a thermal management system for a hybrid electric vehicle. Such a system includes a heater core supplies heat for heating the vehicle's interior by heat exchange between a coolant and air of the vehicle's interior, a coolant line fluidly coupling an engine and heater core so the coolant being circulated by a coolant pump passes there through. A bypass valve is located in the coolant line in proximity to the engine and is selectively opened and closed according to the on/off state of the engine and so that the coolant does not pass through the engine but passes through only the heater core in the engine off state. Such a system includes a heat exchanger fluidly coupled to another heat source so the coolant is heated by the heat exchanger and supplied to the heater core when in the off state.Type: GrantFiled: November 8, 2010Date of Patent: April 8, 2014Assignees: Hyundai Motor Corporation, Kia Motors CorporationInventors: Hee Sang Park, Ho Seok Jeon, Hyun Kim, June Kyu Park, Jung Hwan Yun, Jun Mo Ku, Sang Ha Kim
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Publication number: 20120048504Abstract: The present invention features a thermal management system for a hybrid electric vehicle. Such a system includes a heater core supplies heat for heating the vehicle's interior by heat exchange between a coolant and air of the vehicle's interior, a coolant line fluidly coupling an engine and heater core so the coolant being circulated by a coolant pump passes there through. A bypass valve is located in the coolant line in proximity to the engine and is selectively opened and closed according to the on/off state of the engine and so that the coolant does not pass through the engine but passes through only the heater core in the engine off state. Such a system includes a heat exchanger fluidly coupled to another heat source so the coolant is heated by the heat exchanger and supplied to the heater core when in the off state.Type: ApplicationFiled: November 8, 2010Publication date: March 1, 2012Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR CORPORATIONInventors: Hee Sang Park, Ho Seok Jeon, Hyun Kim, June Kyu Park, Jung Hwan Yun, Jun Mo Ku, Sang Ha Kim
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Publication number: 20100272628Abstract: Provided is a method for preparing plate-like ultrafine particles of flaky graphite having an average graphite plate diameter of 3-5 ?m and a graphite plate thickness of 20-60 nm, including: grinding natural flaky graphite to control the particle size to 5-15 ?m; dipping the ground flaky graphite into an aqueous solution containing an acid and an oxidizing agent, followed by washing and drying, to form a graphite intercalation compound in the ground flaky graphite; carrying out gasification of the graphite intercalation compound via low-temperature heat treatment to expand the flaky graphite to 20-30%; and carrying out wet grinding of the expanded flaky graphite at a slurry concentration of 20-28 wt %. The ultrafine particles of flaky graphite disclosed herein have a narrow particle size distribution, and maintain unique properties of flaky graphite due to the lack of interlayer collapse in flaky graphite particles.Type: ApplicationFiled: October 22, 2009Publication date: October 28, 2010Applicant: Korea Institute of Geoscience and Mineral Resources (KIGAM)Inventors: Byoung-Gon Kim, Gye-Seung Lee, Chong-Lyuck Park, Ho-Seok Jeon, Hee-Dong Jang
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Patent number: 7767924Abstract: An electrostatic separation system for separating fine metal and plastics is disclosed. An electrostatic separation system according to the present invention comprises a negative electrostatic induction plate and positive metal net made of special materials, which have appropriate dimensions and an appropriate space between them to improve separation efficiency, and a separating plate which is appropriately positioned to improve separation efficiency. The electrostatic separation system has processing capacity more than 5 times in comparison to conventional electrostatic selection systems and is able to separate fine particles of 0.1 mm in size. In addition, the electrostatic separation system has wide application in recycling other useful recourses as well as separating the mixture of fine particle metal and non-metal materials.Type: GrantFiled: September 8, 2004Date of Patent: August 3, 2010Assignee: Korea Institute Of Geoscience And Mineral ResourcesInventors: Ho-Seok Jeon, Shun-Myung Shin, Byoung-Gon Kim
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Publication number: 20070084757Abstract: An electrostatic separation system for separating fine metal and plastics is disclosed. An electrostatic separation system according to the present invention comprises a negative electrostatic induction plate and positive metal net made of special materials, which have appropriate dimensions and an appropriate space between them to improve separation efficiency, and a separating plate which is appropriately positioned to improve separation efficiency. The electrostatic separation system has processing capacity more than 5 times in comparison to conventional electrostatic selection systems and is able to separate fine particles of 0.1 mm in size. In addition, the electrostatic separation system has wide application in recycling other useful recourses as well as separating the mixture of fine particle metal and non-metal materials.Type: ApplicationFiled: September 9, 2003Publication date: April 19, 2007Applicant: Korea Institute of Geoscience and Mineral ResourceInventors: Ho-Seok Jeon, Shun-Myung Shin, Byoung-Gon Kim