Patents by Inventor Won-youl Choi
Won-youl Choi 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: 11202658Abstract: The present invention relates to a connector for simultaneously fixing a screw head and a rod, wherein the connector can be firmly fixed to a screw head and a rod, which have been surgically inserted, without requiring disassembly of the screw head and the rod, thus minimizing damage to the affected region. The connector may comprise: a connecting block in which a head accommodation hole portion is formed on one side thereof to be able to accommodate at least a portion of a screw head installed in a vertebral body, and a rod accommodation groove portion is formed on the other side thereof to be able to accommodate at least a portion of a rod that extends from the screw head; a connecting rod formed in a shape extending from the connecting block; and a fixing device that fixes the connecting block to the screw head.Type: GrantFiled: April 10, 2018Date of Patent: December 21, 2021Inventors: Byung Hak Choe, Won Youl Choi, Moon Kyu Kim
-
Publication number: 20200060730Abstract: The present invention relates to a connector for simultaneously fixing a screw head and a rod, wherein the connector can be firmly fixed to a screw head and a rod, which have been surgically inserted, without requiring disassembly of the screw head and the rod, thus minimizing damage to the affected region. The connector may comprise: a connecting block in which a head accommodation hole portion is formed on one side thereof to be able to accommodate at least a portion of a screw head installed in a vertebral body, and a rod accommodation groove portion is formed on the other side thereof to be able to accommodate at least a portion of a rod that extends from the screw head; a connecting rod formed in a shape extending from the connecting block; and a fixing device that fixes the connecting block to the screw head.Type: ApplicationFiled: April 10, 2018Publication date: February 27, 2020Inventors: Byung Hak CHOE, Won Youl CHOI, Moon Kyu KIM
-
Patent number: 7557571Abstract: A fluxgate sensor is integrated in a semiconductor substrate. The fluxgate sensor has two bar type soft magnetic cores, or a rectangular-ring type soft magnetic core to form a closed magnetic path on the semiconductor substrate, with an excitation coil formed of a metal layer either of the united structure winding the two bar-type cores or two longer sides of the rectangular-ring type core altogether and substantially in a number ‘8’ pattern, or of a separated structure winding the two bar type cores or two longer sides of the rectangular-ring type core, respectively, in a number ‘8’ pattern. Also, a pick-up coil is formed on the two bar-type cores or two longer sides of the rectangular-ring type core, either of the united structure winding the two bar-type cores or two longer sides of the rectangular-type core altogether in a solenoid pattern, or of the separated structure winding the two bar type cores or two longer sides of the rectangular-ring type core, respectively, in a solenoid pattern.Type: GrantFiled: September 12, 2002Date of Patent: July 7, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Won-youl Choi, Kyung-won Na, Sang-on Choi
-
Publication number: 20090090411Abstract: Provided are a dye-sensitized solar cell and a method of manufacturing the same, which includes: a lower electrode formed of a titanium metal or a titanium alloy; a titanium oxide electrode having a nanotube structure formed on the lower electrode; a metal oxide layer formed on the titanium oxide electrode along a step difference of the nanotube, having a larger band gap than titanium oxide, and having a dye adsorbed on a surface thereof; a counter electrode spaced a predetermined distance apart from the metal oxide layer; and an electrolyte filled between the metal oxide layer and the counter electrode. The titanium oxide electrode having a nanotube structure, which has a large specific surface area, may increase absorption of solar light and allow easy adsorption of a dye due to the metal oxide layer, thereby improving photo current and voltage characteristics of the solar cell.Type: ApplicationFiled: November 6, 2007Publication date: April 9, 2009Applicant: KANGNUNG NATIONAL UNIVERSITY INDUSTRY ACADEMJY CORPORATION GROUPInventors: Won-Youl Choi, Dae-Jin Yang, Hun Park, Kyu-Shik Mun
-
Patent number: 7407596Abstract: A fluxgate sensor is integrated in a printed circuit board. The fluxgate sensor has two bar-type (or rectangular-ring shaped) soft magnetic cores to form a closed magnetic path on a printed circuit board and an excitation coil in the form of a metal film is wound around the two bar-type soft magnetic cores either in a united structure that winds the two bar-type soft magnetic cores altogether, or in a separated structure that winds the two bar-type soft magnetic cores respectively, both in a pattern of number ‘8’. A pick-up coil is mounted on the excitation coil, either winding the two bars altogether, or respectively, in a solenoid pattern. The fluxgate sensor integrated in the printed circuit board can be mass-produced at a cheap manufacturing cost. The fluxgate sensor also can be made compact-sized, and at the same time, is capable of forming a closed-magnetic path.Type: GrantFiled: February 28, 2007Date of Patent: August 5, 2008Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Won-youl Choi, Byeong-cheon Koh, Kyung-won Na, Sang-on Choi, Myung-sam Kang, Keon-yang Park
-
Patent number: 7372261Abstract: A printed circuit board integrated with a two-axis fluxgate sensor includes a first soft magnetic core formed lengthwise in a first axial direction, a first excitation coil formed of a metal film and wound around the first soft magnetic core, a first pick-up coil formed of a metal film and wound around the first soft magnetic core and the first excitation coil, a second soft magnetic core formed lengthwise in a second axial direction, the second axial direction being perpendicular to the first axial direction, a second excitation coil formed of a metal film and wound around the second soft magnetic core, a second pick-up coil formed of a metal film and wound around the second soft magnetic core and the second excitation coil, and a pad for establishing conductivity between the first and second excitation coils and the first and second pick-up coils and an external circuit.Type: GrantFiled: July 30, 2003Date of Patent: May 13, 2008Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Won-youl Choi, Sang-on Choi, Jun-sik Hwang, Myung-sam Kang
-
Publication number: 20070151943Abstract: A fluxgate sensor is integrated in a printed circuit board. The fluxgate sensor has two bar-type (or rectangular-ring shaped) soft magnetic cores to form a closed magnetic path on a printed circuit board and an excitation coil in the form of a metal film is wound around the two bar-type soft magnetic cores either in a united structure that winds the two bar-type soft magnetic cores altogether, or in a separated structure that winds the two bar-type soft magnetic cores respectively, both in a pattern of number ‘8’. A pick-up coil is mounted on the excitation coil, either winding the two bars altogether, or respectively, in a solenoid pattern. The fluxgate sensor integrated in the printed circuit board can be mass-produced at a cheap manufacturing cost. The fluxgate sensor also can be made compact-sized, and at the same time, is capable of forming a closed-magnetic path.Type: ApplicationFiled: February 28, 2007Publication date: July 5, 2007Inventors: Won-youl Choi, Byeong-cheon Koh, Kyung-won Na, Sang-on Choi, Myung-sam Kang, Keon-yang Park
-
Patent number: 7212001Abstract: A fluxgate sensor is integrated in a printed circuit board. The fluxgate sensor has two bar-type(or rectangular-ring shaped) soft magnetic cores to form a closed magnetic path on a printed circuit board and an excitation coil in the form of a metal film is wound around the two bar-type soft magnetic cores either in a united structure that winds the two bar-type soft magnetic cores altogether, or in a separated structure that winds the two bar-type soft magnetic cores respectively, both in a pattern of number ‘8’. A pick-up coil is mounted on the excitation coil, either winding the two bars altogether, or respectively, in a solenoid pattern. The fluxgate sensor integrated in the printed circuit board can be mass-produced at a cheap manufacturing cost. The fluxgate sensor also can be made compact-sized, and at the same time, is capable of forming a closed-magnetic path.Type: GrantFiled: August 28, 2002Date of Patent: May 1, 2007Assignee: Samsung Electro—Mechanics Co., Ltd.Inventors: Won-youl Choi, Byeong-cheon Koh, Kyung-won Na, Sang-on Choi, Myung-sam Kang, Keon-yang Park
-
Patent number: 7087450Abstract: A fluxgate sensor integrated in a printed circuit board. The fluxgate sensor has soft magnetic cores having a lower core and an upper core mounted on the lower core, for forming a closed magnetic path on a printed circuit board, an excitation coil formed as a metal film, alternately winding the upper and the lower soft magnetic cores substantially in a number ‘8’ pattern, and a pick-up coil formed as a metal film, having a structure of winding the upper and the lower soft magnetic cores substantially in a solenoid pattern, the pick-up coil being placed on the same plane as an external contour of the excitation coil.Type: GrantFiled: February 22, 2005Date of Patent: August 8, 2006Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Won-youl Choi, Keon-yang Park, Byeong-cheon Koh, Myung-sam Kang, Kyung-won Na, Sang-on Choi
-
Patent number: 7015691Abstract: In a weak-magnetic field sensor a rectangular ring-shaped magnetic core is wound by exciting circuit patterns and detecting circuit patterns, and weak-magnetic field sensors are implemented in x-axis and y-axis directions, respectively, to precisely calculate azimuth, thereby sensing a weak-magnetic field having a strength similar to that of earth's magnetic field. The sensor includes a magnetic core having first and second cores connected in parallel to each other; exciting coils wound around the first and second cores, respectively, to supply alternating excitation current to the magnetic core; and a detecting coil alternately arranged together with the exciting coils on the same surfaces on which the exciting coils are formed, and wound around the first and second cores, in order to detect variation of magnetic fluxes generated in the magnetic core.Type: GrantFiled: August 12, 2003Date of Patent: March 21, 2006Assignee: Samsung Electro-Mechanics Co., LTDInventors: Myung-Sam Kang, Sang-On Choi, Won-Youl Choi, Jang-Kyu Kang
-
Patent number: 6998840Abstract: A fluxgate sensor integrated in a printed circuit board. The fluxgate sensor has soft magnetic cores having a lower core and an upper core mounted on the lower core, for forming a closed magnetic path on a printed circuit board, an excitation coil formed as a metal film, alternately winding the upper and the lower soft magnetic cores substantially in a number ‘8’ pattern, and a pick-up coil formed as a metal film, having a structure of winding the upper and the lower soft magnetic cores substantially in a solenoid pattern, the pick-up coil being placed on the same plane as an external contour of the excitation coil.Type: GrantFiled: August 28, 2002Date of Patent: February 14, 2006Assignee: Samsung Electro - Mechanics Co., Ltd.Inventors: Won-youl Choi, Keon-yang Park, Byeong-cheon Koh, Myung-sam Kang, Kyung-won Na, Sang-on Choi
-
Publication number: 20050172480Abstract: A fluxgate sensor integrated in a printed circuit board. The fluxgate sensor has soft magnetic cores having a lower core and an upper core mounted on the lower core, for forming a closed magnetic path on a printed circuit board, an excitation coil formed as a metal film, alternately winding the upper and the lower soft magnetic cores substantially in a number ‘8’ pattern, and a pick-up coil formed as a metal film, having a structure of winding the upper and the lower soft magnetic cores substantially in a solenoid pattern, the pick-up coil being placed on the same plane as an external contour of the excitation coil.Type: ApplicationFiled: February 22, 2005Publication date: August 11, 2005Inventors: Won-youl Choi, Keon-yang Park, Byeong-cheon Koh, Myung-sam Kang, Kyung-won Na, Sang-on Choi
-
Patent number: 6759845Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects the Earth's magnetic field to obtain positional information is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns such that the upper and lower first driving patterns are electrically connected to each other, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers to be parallel to each other and patterned in a certain shape, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns electrically connected to the first driving patterns of the first base board to surround magnetic layers and formed with pickup patterns to surround the first and second driving patterns.Type: GrantFiled: May 8, 2002Date of Patent: July 6, 2004Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Myung-Sam Kang, Kyoung-Won Na, Sang-On Choi, Won-Youl Choi, Jeong-Hwan Lee, Keon-Yang Park
-
Publication number: 20040124836Abstract: The present invention relates generally to a weak-magnetic field sensor using printed circuit board technology and method of manufacturing the same, in which a rectangular ring-shaped magnetic core is wound by exciting circuit patterns and detecting circuit patterns, and weak-magnetic field sensors are implemented in x-axis and y-axis directions, respectively, to precisely calculate azimuth, thereby sensing a weak-magnetic field having a strength similar to that of earth's magnetic field. The sensor includes a magnetic core having first and second cores connected in parallel to each other; exciting coils wound around the first and second cores, respectively, to supply alternating excitation current to the magnetic core; and a detecting coil alternately arranged together with the exciting coils on the same surfaces on which the exciting coils are formed, and wound around the first and second cores, in order to detect variation of magnetic fluxes generated in the magnetic core.Type: ApplicationFiled: August 12, 2003Publication date: July 1, 2004Inventors: Myung-Sam Kang, Sang-On Choi, Won-Youl Choi, Jang-Kyu Kang
-
Patent number: 6753682Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique which detects the Earth's magnetic field to obtain positional information, and a method of manufacturing the same is disclosed. The sensor comprises a first base board which is formed at its upper and lower surfaces with first driving patterns and first pickup patterns, a pair of first stacked boards which are stacked on upper and lower surfaces of the first base board and which are formed with magnetic layers thereon, and a pair of second stacked boards which are stacked on outer surfaces of the pair of first stacked boards and which are formed with second driving patterns and second pickup patterns electrically connected to the first driving patterns and the first pickup patterns of the first base board to surround magnetic layers. The magnetic layer, the driving patterns and the pickup patterns provided on the first base board are oriented to be perpendicular to those provided under the first base board.Type: GrantFiled: May 7, 2002Date of Patent: June 22, 2004Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Myung-Sam Kang, Kyoung-Won Na, Sang-On Choi, Won-Youl Choi, Jeong-Hwan Lee, Keon-Yang Park
-
Patent number: 6747450Abstract: A weak-magnetic field sensor using printed circuit board manufacturing technique and a method of manufacturing the same which detects earth magnetism to obtain positional information is disclosed. The sensor comprises a magnetic layer patterned in a certain shape; a first stacked board stacked on a lower surface of the magnetic layer and formed with a first driving pattern; a second stacked board stacked on an upper surface of the magnetic layer and formed with a second driving pattern, the first and second driving patterns being electrically connected to each other; a third lower stacked board stacked on a lower surface of the first stacked board and formed with a first pickup pattern; and a third upper stacked board stacked on an upper surface of the second stacked board and formed with a second pickup pattern, the third lower and upper stacked boards being electrically connected to each other.Type: GrantFiled: May 8, 2002Date of Patent: June 8, 2004Assignee: Samsung-Electro-Mechanics Co., Ltd.Inventors: Myung-Sam Kang, Kyoung-Won Na, Sang-On Choi, Won-Youl Choi, Jeong-Hwan Lee, Keon-Yang Park
-
Patent number: 6719918Abstract: A method of reducing notching during reactive ion etching (RIE) is provided. The method is useful when RIE is performed to pass through a silicon layer on a multi-layered structure on which the silicon layer, an insulating layer and a silicon substrate are sequentially deposited. The method includes the steps of: forming an insulating layer on a silicon substrate; forming trenches on the insulating layer to expose the silicon substrate; forming a silicon layer on the insulating layer to fill the trenches; and patterning the silicon layer to form first etch regions, which pass through the silicon layer, to include the trenches. According to the method, it is possible to remarkably reduce notching without depositing a metal layer, when a multi-layered structure including a silicon layer which is etched to be passed through during RIE is fabricated.Type: GrantFiled: December 26, 2001Date of Patent: April 13, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Byeung-leul Lee, Taek-ryong Chung, Joon-hyock Choi, Won-youl Choi, Kyu-dong Jung, Sang-woo Lee
-
Publication number: 20040027121Abstract: A printed circuit board integrated with a two-axis fluxgate sensor includes a first soft magnetic core formed lengthwise in a first axial direction, a first excitation coil formed of a metal film and wound around the first soft magnetic core, a first pick-up coil formed of a metal film and wound around the first soft magnetic core and the first excitation coil, a second soft magnetic core formed lengthwise in a second axial direction, the second axial direction being perpendicular to the first axial direction, a second excitation coil formed of a metal film and wound around the second soft magnetic core, a second pick-up coil formed of a metal film and wound around the second soft magnetic core and the second excitation coil, and a pad for establishing conductivity between the first and second excitation coils and the first and second pick-up coils and an external circuit.Type: ApplicationFiled: July 30, 2003Publication date: February 12, 2004Inventors: Won-Youl Choi, Sang-On Choi, Jun-Sik Hwang, Myung-Sam Kang
-
Publication number: 20030173961Abstract: A fluxgate sensor integrated in a printed circuit board. The fluxgate sensor has soft magnetic cores having a lower core and an upper core mounted on the lower core, for forming a closed magnetic path on a printed circuit board, an excitation coil formed as a metal film, alternately winding the upper and the lower soft magnetic cores substantially in a number ‘8’ pattern, and a pick-up coil formed as a metal film, having a structure of winding the upper and the lower soft magnetic cores substantially in a solenoid pattern, the pickup coil being placed on the same plane as an external contour of the excitation coil.Type: ApplicationFiled: August 28, 2002Publication date: September 18, 2003Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Won-Youl Choi, Keon-Yang Park, Byeong-Cheon Koh, Myung-Sam Kang, Kyung-Won Na, Sang-On Choi
-
Publication number: 20030173963Abstract: A fluxgate sensor is integrated in a semiconductor substrate. The fluxgate sensor has two bar type soft magnetic cores, or a rectangular-ring type soft magnetic core to form a closed magnetic path on the semiconductor substrate, with an excitation coil formed of a metal layer either of the united structure winding the two bar-type cores or two longer sides of the rectangular-ring type core altogether and substantially in a number ‘8’ pattern, or of a separated structure winding the two bar type cores or two longer sides of the rectangular-ring type core, respectively, in a number ‘8’ pattern.Type: ApplicationFiled: September 12, 2002Publication date: September 18, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Won-youl Choi, Kyung-won Na, Sang-on Choi