Patents by Inventor Pil-Woo Heo
Pil-Woo Heo 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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Patent number: 11333349Abstract: Disclosed herein are a fluid sand falling type circulating fluidized bed boiler with a plurality of risers for preventing erosion and corrosion of water tubes and increasing combustion efficiency, and a method of operating the same. The fluid sand falling type circulating fluidized bed boiler with a plurality of risers includes a boiler section into which fuel and oxidizer are injected, a riser section connected to the boiler section so that the fuel and fluid sand supplied from the boiler section are introduced from the bottom of the riser section and flow up, and a relay section provided on the boiler section to supply the fluid sand having passed through the riser section to the boiler section, wherein the fuel is injected from the top of the boiler section and burned while flowing down therein.Type: GrantFiled: May 2, 2019Date of Patent: May 17, 2022Assignees: Korea Institute of Industrial Technology, Korea Institute of Energy Research, Korea Institute of Machinery & MaterialsInventors: Uen Do Lee, Byeong Ryeol Bang, Young Doo Kim, Soo Hwa Jeong, Chang Won Yang, Jae Goo Lee, Tae Young Mun, Myung Won Seo, Ji Hong Moon, Hyun Seol Park, Joon Mok Shim, Young Cheol Park, Do Won Shun, Jong Ho Moon, Dal Hee Bae, Sung Ho Jo, Yun Tae Hwang, Sang In Keel, Jin Han Yun, ChungKyu Lee, Pil Woo Heo
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Publication number: 20200025366Abstract: Disclosed herein are a fluid sand falling type circulating fluidized bed boiler with a plurality of risers for preventing erosion and corrosion of water tubes and increasing combustion efficiency, and a method of operating the same. The fluid sand falling type circulating fluidized bed boiler with a plurality of risers includes a boiler section into which fuel and oxidizer are injected, a riser section connected to the boiler section so that the fuel and fluid sand supplied from the boiler section are introduced from the bottom of the riser section and flow up, and a relay section provided on the boiler section to supply the fluid sand having passed through the riser section to the boiler section, wherein the fuel is injected from the top of the boiler section and burned while flowing down therein.Type: ApplicationFiled: May 2, 2019Publication date: January 23, 2020Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, KOREA INSTITUTE OF ENERGY RESEARCH, KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Uen Do LEE, Byeong Ryeol BANG, Young Doo KIM, Soo Hwa JEONG, Chang Won YANG, Jae Goo LEE, Tae Young MUN, Myung Won SEO, Ji Hong MOON, Hyun Seol PARK, Joon Mok SHIM, Young Cheol PARK, Do Won SHUN, Jong Ho MOON, Dal Hee BAE, Sung Ho JO, Yun Tae HWANG, Sang In KEEL, Jin Han YUN, ChungKyu LEE, Pil Woo HEO
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Patent number: 7866954Abstract: Disclosed herein are a valve and a micro fluid pump having the same. The valve is mounted in a micro fluid pump having a capillary tube, to which a gas supply unit and a fluid transfer pipe are connected, for controlling the introduction and the discharge of fluid. The valve includes a discharge pipe filled with liquid such that the discharge pipe has a predetermined resistance pressure and constructed in a structure in which one end of the discharge pipe is connected to the capillary tube such that the discharge pipe communicates with the interior of the capillary tube, and the other end of the discharge pipe is open, thereby allowing gas out of the capillary tube through the discharge pipe when a gas pressure in the capillary tube exceeds the resistance pressure of the discharge pipe.Type: GrantFiled: December 29, 2006Date of Patent: January 11, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Deuk-yong Koh
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Publication number: 20080156645Abstract: An erythrocyte sedimentation rate log capable of quickly and easily measuring an erythrocyte sedimentation rate in the blood by measuring the number of erythrocytes in the blood passing through a branched channel from a small amount of blood in an electrical manner without an additional driving means is disclosed. The erythrocyte sedimentation rate log includes a main body formed of an upper plate and a lower plate, a blood introduction part formed in the main body to include an inlet and an outlet formed at one side of the upper plate of the main body, a channel disposed at one side of the blood introduction part to communicate with the blood introduction part such that erythrocytes in blood pass through the channel, and a current supply part installed in the channel to supply constant current to cause an electrical resistance in erythrocytes.Type: ApplicationFiled: October 29, 2007Publication date: July 3, 2008Applicant: Korea Institute of Machinery & MaterialsInventors: Duckjong Kim, Yu Chang Kim, Yun Wook Hwang, Sang-Jin Park, Pil Woo Heo, Eui Soo Yoon
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Publication number: 20080075605Abstract: Disclosed herein are a valve and a micro fluid pump having the same. The valve is mounted in a micro fluid pump having a capillary tube, to which a gas supply unit and a fluid transfer pipe are connected, for controlling the introduction and the discharge of fluid. The valve includes a discharge pipe filled with liquid such that the discharge pipe has a predetermined resistance pressure and constructed in a structure in which one end of the discharge pipe is connected to the capillary tube such that the discharge pipe communicates with the interior of the capillary tube, and the other end of the discharge pipe is open, thereby allowing gas out of the capillary tube through the discharge pipe when a gas pressure in the capillary tube exceeds the resistance pressure of the discharge pipe.Type: ApplicationFiled: December 29, 2006Publication date: March 27, 2008Applicant: KOREAN INSTITUTE OF MACHINERY & MATERIALSInventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Deuk-yong Koh
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Publication number: 20080047892Abstract: Disclosed is a portable micro blood separator, which has a blood separator including a main body including an upper substrate and a lower substrate; a blood introduction unit formed at one side of the main body for allowing blood to be introduced into the separator; a blood inflow unit including an inflow groove formed in the lower substrate, through which the blood introduced by the blood introduction unit flows; and a plasma extraction unit including extraction spaces extended from the blood inflow unit and having a height lower than that of the inflow groove of the blood inflow unit so that plasma can be separated from the blood flowing into the blood inflow unit, so as to separate the plasma and corpuscles from the blood and analyze ingredients in the separated plasma.Type: ApplicationFiled: March 26, 2007Publication date: February 28, 2008Applicants: Korea Institute of Machinery & Materials, All Medicus Co., Ltd.Inventors: Duck-jong Kim, Yun-wook Hwang, Yu-chang Kim, Sang-jin Park, Pil-woo Heo, Eui-soo Yoon, Yon-chan Ahn, Jun-oh Ryu
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Patent number: 6342747Abstract: A wing type ultrasonic transducer is free from a reduction in the output power and has one ultrasonic generator. This ultrasonic generator has piezoelectric ceramic materials with two countermasses respectively coupled to the outside ends of the piezoelectric ceramic materials. A rod-like resonator is coaxially coupled to the outside end of each of the countermasses and is used to emit ultrasonic waves to a liquid in a radial direction. An immersible housing covers the ultrasonic generator so as to accomplish a water tightness of the ultrasonic generator. The rod-like resonator may be a solid resonator or hollow resonator. In addition, the rod-like resonator is integral times as long as a half-wavelength (&lgr;/2) at an operating resonant frequency.Type: GrantFiled: February 24, 2000Date of Patent: January 29, 2002Assignee: Korea Institute of Machinery & MaterialsInventors: Yang-Lae Lee, Pil-Woo Heo, Sang-Jin Park, Jae-Yun Kim, Eui-Su Lim
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Patent number: 6218768Abstract: A power ultrasonic transducer according to the present invention includes: an ultrasonic generator comprised of two pairs of piezoceramic elements which are adjoined to be coupled to each other on the same shaft and a countermass attached at the both ends of the piezoceramic elements; a hollow type body having a length of integer times of half wavelength, in which the ultrasonic generator is positioned; a cylindrical transmitting rod having a length of integer times of half wavelength and for connecting the one side of the body with the one side of the ultrasonic generator to be fixed on the both sides of the ultrasonic generator, respectively; and a threaded stud for securing an electric wire for power supply at the one side end of the outside of the body, the electric wire for power supply passing through the countermass and the interior of the transmitting rod each positioned in the interior of the body to be wired to the piezoceramic elements.Type: GrantFiled: January 5, 1999Date of Patent: April 17, 2001Assignee: Korea Institute of Machinery & MaterialsInventors: Yang-Lae Lee, Pil-Woo Heo, Eui-Su Lim
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Patent number: 6073831Abstract: A method of manufacturing an ultrasonic generator adapted to ultrasonic sterilizers, for minimizing the heat input of a magnetostrictive element, comprises the steps of: forming, on a wave guide, melting layers constructed of joining materials such as Al--Si alloy and Sn--Ag alloy which melt within a temperature range of 575.about.590.degree. C. and 230.about.250.degree. C., respectively, and have tensile strength of 17.about.25 kg/mm.sup.2 and 10.about.15 kg/mm.sup.2, respectively; and joining the wave guide with the magnetostrictive element.Type: GrantFiled: January 29, 1998Date of Patent: June 13, 2000Assignee: Korea Institute of Machinery & MetalsInventors: Yang-Lae Lee, Pil-Woo Heo, Jae heyng Kim, Eui-su Lim
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Patent number: 5914841Abstract: Provided is a circuit for driving a magnetostrictive device including: a high voltage interrupting circuit section for interrupting an instantaneously leaking high voltage depending on the switching operation of a power switch; a voltage storage section for rectifying an input voltage for a half of the positive cycle and storing it; a switching circuit section for supplying the voltage stored in the voltage storage section to the magnetostrictive device; and a voltage discharging circuit section for discharge the voltage remaining in the voltage storage section when the power is interrupted.Type: GrantFiled: January 29, 1998Date of Patent: June 22, 1999Assignee: Korea Institute of Machinery & MetalsInventors: Pil-Woo Heo, Yang-Lae Lee, Jaeheyng Kim, Eui-Su Lim