Patents by Inventor Sang-kwon Wee
Sang-kwon Wee 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: 12294094Abstract: The present invention relates to a battery case which is made from a steel material, thereby providing a cross-section similar to that of an extruded material and having improved impact resistance properties, and at the same time, enabling the reduction of costs through the integration of components, the battery case comprising a case main body having a plate and a lateral frame enclosing the plate, wherein the lateral frame comprises a hollow part inside thereof, a reinforcement part which traverses the hollow part at a portion between side walls on both sides, or protrudes into the hollow part from at least one of the side walls, and a shock absorption part which is formed by the reinforcement part being bent or curved.Type: GrantFiled: November 26, 2019Date of Patent: May 6, 2025Assignee: POSCO CO., LTDInventors: Gi-Suk Chung, Sang-Kwon Wee, Don-Gun Kim
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Publication number: 20240356136Abstract: The present invention provides a cross member for a battery case. The cross member comprises: a first frame part; a second frame part; and a connection frame part arranged between the first frame part and the second frame part to connect the first frame part with the second frame part, wherein the connection frame part is made of a material different from those of the frame part and the second frame part.Type: ApplicationFiled: November 3, 2022Publication date: October 24, 2024Applicant: POSCO CO., LTDInventors: Chang-Gyun Jung, Jae-Heon Park, Myung-Hwan Cha, Sang-Kwon Wee
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Publication number: 20240258624Abstract: The present invention relates to a side frame for a battery case which can enable weight reduction and cost reduction simultaneously while sufficiently protecting battery cells from external shock, and also can fundamentally solve the defects of a weld area by significantly reducing the weld area. The side frame comprises: a first frame part formed to have an open cross-section; and a second frame part coupled to the first frame part by being disposed in the first frame part so as to close the open cross-section of the first frame part, wherein the first frame part and the second frame part are formed of different materials, and the respective corners of the first frame part and the second frame part may be bent.Type: ApplicationFiled: May 27, 2022Publication date: August 1, 2024Applicant: POSCO CO., LTDInventors: Chang-Gyun Jung, Jae-Heon Park, Myung-Hwan Cha, Sang-Kwon Wee
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Publication number: 20230378583Abstract: The present invention relates to a side frame for a battery case, which can achieve lightweight and cost reduction simultaneously while sufficiently protecting battery cells against the external shock, and the side frame for a battery case according to an embodiment comprises: a first frame unit formed to have an open end surface; and a second frame unit which is arranged in the first frame unit to close the open end surface of the first frame unit and is coupled to the first frame unit, wherein the first frame unit and the second frame unit may be formed of different materials from each other.Type: ApplicationFiled: June 24, 2021Publication date: November 23, 2023Applicant: POSCO Co., LtdInventors: Chang-Gyun Jung, Sang-Kwon Wee, Kyu-Seung Jee
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Publication number: 20220393286Abstract: The battery case according to one embodiment may comprise: a base plate member; a support member which surrounds the base plate member, has a closed cross-section, and supports the base plate member; and an absorption member which is coupled to the outside of the support member so as to form a closed cross-section and absorbs external impacts.Type: ApplicationFiled: November 11, 2020Publication date: December 8, 2022Applicants: POSCO, ASAN CO., LTD.Inventors: Myung-Hwan CHA, Sang-Kwon WEE, Don-Gun KIM, Geun-Ho KIM, Seong-Min CHO, Kyu-Rae KIM, Seung-Ho YOO
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Publication number: 20220029224Abstract: The present invention relates to a battery case which is made from a steel material, thereby providing a cross-section similar to that of an extruded material and having improved impact resistance properties, and at the same time, enabling the reduction of costs through the integration of components, the battery case comprising a case main body having a plate and a lateral frame enclosing the plate, wherein the lateral frame comprises a hollow part inside thereof, a reinforcement part which traverses the hollow part at a portion between side walls on both sides, or protrudes into the hollow part from at least one of the side walls, and a shock absorption part which is formed by the reinforcement part being bent or curved.Type: ApplicationFiled: November 26, 2019Publication date: January 27, 2022Inventors: Gi-Suk CHUNG, Sang-Kwon WEE, Don-Gun KIM
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Patent number: 8052253Abstract: A piezoelectric inkjet head having piezoelectric actuators for restrictors includes a flow channel plate including an ink inlet through which ink enters, a plurality of pressure chambers into which ink to be ejected is filled, a manifold which is a path to receive ink from the ink inlet and to supply the received ink to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to an outside thereof. The piezoelectric inkjet head also includes a plurality of first piezoelectric actuators formed on the flow channel plate corresponding to positions of the pressure chambers to provide a driving force to each of the pressure chambers to eject ink to the outside. The piezoelectric inkjet head also includes a plurality of second piezoelectric actuators formed on the flow channel plate corresponding to positions of the restrictors to change cross-sectional areas of the restrictors.Type: GrantFiled: June 5, 2007Date of Patent: November 8, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Sang-kwon Wee, Se-young Oh, Jae-woo Chung
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Patent number: 8038263Abstract: A piezoelectric inkjet head includes a plurality of pressure chambers filled with ink that is to be ejected, a manifold to supply ink to the pressure chambers and extending in both sides of each of the pressure chambers parallel to a direction in which the pressure chambers are arranged, a restrictor to connect the manifold to each of the pressure chambers, and to be connected to both ends of each of the pressure chambers in a longitudinal direction, a plurality of piezoelectric actuators respectively corresponding to the pressure chambers, and at least one nozzle respectively connected to each of the pressure chambers, and to be symmetrically arranged with respect to the centerline in a longitudinal direction of each of the pressure chamber.Type: GrantFiled: October 30, 2007Date of Patent: October 18, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Se-young Oh, Sang-kwon Wee, Mi-Jeong Song
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Patent number: 8011749Abstract: Provided are an apparatus and method for measuring the thickness of an ink layer in a pixel and a method of controlling nozzles of an inkjet head using the apparatus and method. The apparatus includes: a substrate; a plurality of pixels disposed on the substrate and filled with ink due to a printing operation; first and second electrodes corresponding to the pixels, the first and second electrodes disposed on opposite sides of each of the pixels; and a capacitance measurement circuit electrically connected to the first and second electrodes to measure the capacitance of each of the pixels.Type: GrantFiled: May 20, 2008Date of Patent: September 6, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Sang-il Kim, Tae-gyun Kim, Tae-woon Cha, Sang-kwon Wee
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Patent number: 7909438Abstract: A piezoelectric type inkjet printhead includes an upper substrate including a pressure chamber to be filled with ink that is to be ejected, a reservoir to store ink that flowed in from an ink container, a restrictor connect the reservoir to one end of the pressure chamber, an intermediate substrate comprising a damper formed on a portion of the intermediate substrate, which corresponds to other end of the pressure chamber, a lower substrate comprising a nozzle to eject ink and formed in a portion of the lower substrate, which corresponds to the damper, a hydrophobic layer formed on a bottom of the lower substrate, and a piezoelectric actuator formed on the upper substrate to supply driving power to eject ink to the pressure chamber, wherein the nozzle is formed in the lower substrate at a predetermined depth from a bottom surface of the lower substrate.Type: GrantFiled: July 10, 2007Date of Patent: March 22, 2011Assignee: Samsung Electronics Co., LtdInventors: Tae-kyung Lee, Sang-kwon Wee, Jae-woo Chung, Tae-woon Cha, Jae-chang Lee
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Patent number: 7802874Abstract: A restrictor with a structure to prevent a back flow of ink and an inkjet head including the restrictor. In the inkjet head, an ink channel is formed in a channel plate, and the ink channel includes an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors respectively connecting the pressure chambers to the manifold, and a plurality of nozzles. Piezoelectric actuators are formed on the channel plate. Each of the restrictors includes a plurality of protrusions formed on an inner surface thereof in a structure suitable to increase a flow resistance of the restrictor when ink flows from the pressure chamber to the manifold through the restrictor. Each of the protrusions includes a first surface facing a flow of ink moving through the restrictor in a direction from the manifold to the pressure chamber, and a second surface facing a flow of ink moving through the restrictor in a direction from the pressure chamber to the manifold.Type: GrantFiled: May 31, 2007Date of Patent: September 28, 2010Assignee: Samsung Electronics Co., LtdInventors: Sang-kwon Wee, Se-young Oh, Jae-woo Chung, Mi-jeong Song
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Publication number: 20090174742Abstract: Provided are an apparatus and method for measuring the thickness of an ink layer in a pixel and a method of controlling nozzles of an inkjet head using the apparatus and method. The apparatus includes: a substrate; a plurality of pixels disposed on the substrate and filled with ink due to a printing operation; first and second electrodes corresponding to the pixels, the first and second electrodes disposed on opposite sides of each of the pixels; and a capacitance measurement circuit electrically connected to the first and second electrodes to measure the capacitance of each of the pixels.Type: ApplicationFiled: May 20, 2008Publication date: July 9, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-il Kim, Tae-gyun Kim, Tae-woon Cha, Sang-kwon Wee
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Publication number: 20090017388Abstract: Provided is a substrate structure for a color filter and a color filter having the same. The substrate structure for color filter includes: a transparent substrate on which a plurality of pixels are defined by a black matrix; and an ink-philic pattern which is formed in a predetermined pattern on a surface of the substrate.Type: ApplicationFiled: October 15, 2007Publication date: January 15, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-kwon Wee, Sang-joon Lee
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Publication number: 20090009565Abstract: A piezoelectric inkjet head includes a plurality of pressure chambers filled with ink that is to be ejected, a manifold to supply ink to the pressure chambers and extending in both sides of each of the pressure chambers parallel to a direction in which the pressure chambers are arranged, a restrictor to connect the manifold to each of the pressure chambers, and to be connected to both ends of each of the pressure chambers in a longitudinal direction, a plurality of piezoelectric actuators respectively corresponding to the pressure chambers, and at least one nozzle respectively connected to each of the pressure chambers, and to be symmetrically arranged with respect to the centerline in a longitudinal direction of each of the pressure chamber.Type: ApplicationFiled: October 30, 2007Publication date: January 8, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Se-young OH, Sang-Kwon Wee, Mi-Jeong Song
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Publication number: 20080309736Abstract: A piezoelectric inkjet head includes a plurality of pressure chambers in which ink to be ejected is filled. A plurality of piezoelectric actuators is respectively disposed in correspondence to the pressure chambers. A plurality of nozzles is in fluid communication with the pressure chambers, and at least two nozzles are formed in each of the pressure chambers.Type: ApplicationFiled: October 25, 2007Publication date: December 18, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-kwon Wee, So-young Oh, Hwa-sun Lee
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Publication number: 20080129799Abstract: A piezoelectric type inkjet printhead includes an upper substrate including a pressure chamber to be filled with ink that is to be ejected, a reservoir to store ink that flowed in from an ink container, a restrictor connect the reservoir to one end of the pressure chamber, an intermediate substrate comprising a damper formed on a portion of the intermediate substrate, which corresponds to other end of the pressure chamber, a lower substrate comprising a nozzle to eject ink and formed in a portion of the lower substrate, which corresponds to the damper, a hydrophobic layer formed on a bottom of the lower substrate, and a piezoelectric actuator formed on the upper substrate to supply driving power to eject ink to the pressure chamber, wherein the nozzle is formed in the lower substrate at a predetermined depth from a bottom surface of the lower substrate.Type: ApplicationFiled: July 10, 2007Publication date: June 5, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Lee, Sang-kwon Wee, Jae-woo Chung, Tae-woon Cha, Jae-chang Lee
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Publication number: 20080129798Abstract: A restrictor with a structure to prevent a back flow of ink and an inkjet head including the restrictor. In the inkjet head, an ink channel is formed in a channel plate, and the ink channel includes an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors respectively connecting the pressure chambers to the manifold, and a plurality of nozzles. Piezoelectric actuators are formed on the channel plate. Each of the restrictors includes a plurality of protrusions formed on an inner surface thereof in a structure suitable to increase a flow resistance of the restrictor when ink flows from the pressure chamber to the manifold through the restrictor. Each of the protrusions includes a first surface facing a flow of ink moving through the restrictor in a direction from the manifold to the pressure chamber, and a second surface facing a flow of ink moving through the restrictor in a direction from the pressure chamber to the manifold.Type: ApplicationFiled: May 31, 2007Publication date: June 5, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-kwon Wee, Se-young Oh, Jae-woo Chung, Mi-jeong Song
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Patent number: 7377776Abstract: A semiconductor wafer baking apparatus includes a hot plate, a container of which an upper part is open, and a cover that covers the upper part of the container. The cover includes an upper plate, a lower plate and a side wall that form a gas circulating space therebetween. At least one gas inlet is formed in the side wall, a plurality of gas supply holes are formed in a central region of the lower plate, and a skirt on which is formed a gas exhaust unit is coupled to a lower edge of the cover.Type: GrantFiled: December 28, 2005Date of Patent: May 27, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-sung Lee, Dong-woo Lee, Tae-gyu Kim, Tae-sang Park, Bang-weon Lee, Jong-kill Lim, Chang-hoon Jung, Sang-kwon Wee
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Publication number: 20080018715Abstract: A piezoelectric inkjet head having piezoelectric actuators for restrictors includes a flow channel plate including an ink inlet through which ink enters, a plurality of pressure chambers into which ink to be ejected is filled, a manifold which is a path to receive ink from the ink inlet and to supply the received ink to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to an outside thereof. The piezoelectric inkjet head also includes a plurality of first piezoelectric actuators formed on the flow channel plate corresponding to positions of the pressure chambers to provide a driving force to each of the pressure chambers to eject ink to the outside. The piezoelectric inkjet head also includes a plurality of second piezoelectric actuators formed on the flow channel plate corresponding to positions of the restrictors to change cross-sectional areas of the restrictors.Type: ApplicationFiled: June 5, 2007Publication date: January 24, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-kwon WEE, Se-young Oh, Jae-woo Chung
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Publication number: 20060174836Abstract: An apparatus for heating a wafer includes a hot plate, formed of, for example, ceramic, which heats the wafer mounted thereon, a case supporting the hot plate, and a fixing unit fixing the hot plate to the case that is located under the hot plate. The fixing unit may include a ball for contacting and pressing the hot plate, and an elastic spring which presses the ball and which compresses when the hot plate expands thermally.Type: ApplicationFiled: November 7, 2005Publication date: August 10, 2006Inventors: Bang-weon Lee, Tae-gyu Kim, Jin-sung Lee, Dong-woo Lee, Tae-sang Park, Chang-hoon Jung, Sang-kwon Wee