Patents by Inventor Chang Min SEO
Chang Min SEO 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: 11915782Abstract: An electronic device including a memory device with improved reliability is provided. The semiconductor device comprises a data pin configured to transmit a data signal, a command/address pin configured to transmit a command and an address, a command/address receiver connected to the command/address pin, and a computing unit connected to the command/address receiver, wherein the command/address receiver receives a first command and a first address from the outside through the command/address pin and generates a first instruction on the basis of the first command and the first address, and the computing unit receives the first instruction and performs computation based on the first instruction.Type: GrantFiled: August 20, 2021Date of Patent: February 27, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chang Min Lee, Nam Hyung Kim, Dae Jeong Kim, Do Han Kim, Min Su Kim, Deok Ho Seo, Won Jae Shin, Yong Jun Yu, Il Gyu Jung, In Su Choi
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Patent number: 11652309Abstract: Provided is a board coupling structure in which a power supply circuit board is formed as a separate board, more specifically, to a board coupling structure in which a signal processing circuit board for processing signals such as image signals, voice signals, and the like and a power supply circuit board are formed as different types of boards and the different types of boards are laterally coupled to each other. The board coupling structure includes a first circuit board, a second circuit board formed of a smaller number of layers than the number of layers of the first circuit board, and a fastening unit configured to laterally fasten a contact edge of the first circuit board to a contact edge of the second circuit board which are facing each other.Type: GrantFiled: December 9, 2021Date of Patent: May 16, 2023Assignee: SOLUM CO., LTDInventor: Chang Min Seo
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Patent number: 11445610Abstract: A PCB assembly includes a second PCB disposed adjacent to a first PCB and have a second hole facing a first hole, an upper plate disposed at an upper of the first and second hole and have a third hole disposed at the upper of the first hole and a fourth hole disposed at the upper of the second hole, a holder disposed at a lower of the first and second hole and have a lower plate having a fifth hole disposed at the lower of the first hole and a sixth hole disposed at the lower of the second hole, a first fixing screw penetrating through the third first, and fifth hole, and a second fixing screw penetrating through the fourth, second and sixth hole, and the lower plate includes a protrusion penetrating through the second PCB coupling the first PCB and the second PCB.Type: GrantFiled: March 23, 2021Date of Patent: September 13, 2022Assignee: SOLUM CO., LTD.Inventors: Chang Min Seo, Yong Jae Kim, Dae Hyun Jang
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Patent number: 11406942Abstract: A hollow fiber membrane of the present invention is a hollow fiber membrane having an outer surface and an inner surface, wherein the inner surface has a zebra stripe pattern in which dense portions and porous portions are alternately formed in the longitudinal direction, and the outer surface has a maximum pore size of about 1 ?m or less (?about 1 ?m), and wherein the hollow fiber membrane has a water permeability (flux) of ?about 1,300 LMH/bar to ?about 5,000 LMH/bar.Type: GrantFiled: November 22, 2018Date of Patent: August 9, 2022Assignee: LOTTE CHEMICAL CORPORATIONInventors: Bum Jin Park, Dong Jun Im, Chang Min Seo
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Publication number: 20220102882Abstract: Provided is a board coupling structure in which a power supply circuit board is formed as a separate board, more specifically, to a board coupling structure in which a signal processing circuit board for processing signals such as image signals, voice signals, and the like and a power supply circuit board are formed as different types of boards and the different types of boards are laterally coupled to each other. The board coupling structure includes a first circuit board, a second circuit board formed of a smaller number of layers than the number of layers of the first circuit board, and a fastening unit configured to laterally fasten a contact edge of the first circuit board to a contact edge of the second circuit board which are facing each other.Type: ApplicationFiled: December 9, 2021Publication date: March 31, 2022Inventor: CHANG MIN SEO
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Patent number: 11239585Abstract: Provided is a board coupling structure in which a power supply circuit board is formed as a separate board, more specifically, to a board coupling structure in which a signal processing circuit board for processing signals such as image signals, voice signals, and the like and a power supply circuit board are formed as different types of boards and the different types of boards are laterally coupled to each other. The board coupling structure includes a first circuit board, a second circuit board formed of a smaller number of layers than the number of layers of the first circuit board, and a fastening unit configured to laterally fasten a contact edge of the first circuit board to a contact edge of the second circuit board which are facing each other.Type: GrantFiled: May 4, 2020Date of Patent: February 1, 2022Assignee: SOLUM CO., LTDInventor: Chang Min Seo
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Publication number: 20220022319Abstract: A PCB assembly includes a second PCB disposed adjacent to a first PCB and have a second hole facing a first hole, an upper plate disposed at an upper of the first and second hole and have a third hole disposed at the upper of the first hole and a fourth hole disposed at the upper of the second hole, a holder disposed at a lower of the first and second hole and have a lower plate having a fifth hole disposed at the lower of the first hole and a sixth hole disposed at the lower of the second hole, a first fixing screw penetrating through the third first, and fifth hole, and a second fixing screw penetrating through the fourth, second and sixth hole, and the lower plate includes a protrusion penetrating through the second PCB coupling the first PCB and the second PCB.Type: ApplicationFiled: March 23, 2021Publication date: January 20, 2022Inventors: Chang Min SEO, Yong Jae KIM, Dae Hyun JANG
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Publication number: 20200381850Abstract: Provided is a board coupling structure in which a power supply circuit board is formed as a separate board, more specifically, to a board coupling structure in which a signal processing circuit board for processing signals such as image signals, voice signals, and the like and a power supply circuit board are formed as different types of boards and the different types of boards are laterally coupled to each other. The board coupling structure includes a first circuit board, a second circuit board formed of a smaller number of layers than the number of layers of the first circuit board, and a fastening unit configured to laterally fasten a contact edge of the first circuit board to a contact edge of the second circuit board which are facing each other.Type: ApplicationFiled: May 4, 2020Publication date: December 3, 2020Inventor: CHANG MIN SEO
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Publication number: 20200360864Abstract: A hollow fiber membrane of the present invention is a hollow fiber membrane having an outer surface and an inner surface, wherein the inner surface has a zebra stripe pattern in which dense portions and porous portions are alternately formed in the longitudinal direction, and the outer surface has a maximum pore size of about 1 ?m or less (?about 1 ?m), and wherein the hollow fiber membrane has a water permeability (flux) of ? about 1,300 LMH/bar to ? about 5,000 LMH/bar.Type: ApplicationFiled: November 22, 2018Publication date: November 19, 2020Inventors: Bum Jin PARK, Dong Jun IM, Chang Min SEO
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Patent number: 10737223Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable having a scalloped periphery, the braid can be infiltrated with membrane polymer which, when coagulated, embeds the braid positioning it around the lumen. The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.Type: GrantFiled: August 10, 2018Date of Patent: August 11, 2020Assignee: LOTTE CHEMICAL CORPORATIONInventors: Chang Min Seo, Gyeong Mo Lee
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Patent number: 10471395Abstract: A hollow fiber membrane and a method of preparing the same. The hollow fiber membrane has an inner surface and an outer surface, wherein the inner surface has a zebra-stripe pattern in which a dense portion and a porous portion are alternately formed in a longitudinal direction of the hollow fiber membrane.Type: GrantFiled: September 27, 2017Date of Patent: November 12, 2019Assignee: LOTTE CHEMICAL CORPORATIONInventors: Dong Jun Im, Bum Jin Park, Chang Min Seo
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Patent number: 10290978Abstract: A female connector capable of easily confirming whether or not a male connector is connected thereto, a connector module having the male connector, and an electronic device having the connector module are disclosed. The female connector comprises a connector body, a first terminal engagement pin and a second terminal engagement pin. The first terminal engagement pin is disposed inside the connector body and capable of receiving an input signal from a connection terminal of a male connector when the connection terminal is in contact therewith. The second terminal engaging pin is disposed inside the connector body to be spaced apart from the first terminal engaging pin. The first and second terminal engagement pins are electrically connected with each other through the connection terminal when the connection terminal is inserted and coupled between the first and second terminal engagement pins.Type: GrantFiled: June 27, 2017Date of Patent: May 14, 2019Assignee: SOLUM CO., LTD.Inventors: Jong Sik Park, Dae Hyun Jang, Chang Min Seo
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Publication number: 20190022598Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable having a scalloped periphery, the braid can be infiltrated with membrane polymer which, when coagulated, embeds the braid positioning it around the lumen. The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.Type: ApplicationFiled: August 10, 2018Publication date: January 24, 2019Inventors: Chang Min Seo, Gyeong Mo Lee
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Patent number: 10046281Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilament. When the braid is supported on a plasticized PVA cable having a scalloped periphery, the braid can be infiltrated with membrane polymer which, when coagulated, embeds the braid positioning it around the lumen. The embedded spiral weave, free of any circumferentially constricting monofilament, allows the membrane to be biaxially distensible. The membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.Type: GrantFiled: October 24, 2012Date of Patent: August 14, 2018Assignee: LOTTE CHEMICAL CORPORATIONInventors: Chang Min Seo, Gyeong Mo Lee
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Publication number: 20180085713Abstract: A hollow fiber membrane and a method of preparing the same. The hollow fiber membrane has an inner surface and an outer surface, wherein the inner surface has a zebra-stripe pattern in which a dense portion and a porous portion are alternately formed in a longitudinal direction of the hollow fiber membrane.Type: ApplicationFiled: September 27, 2017Publication date: March 29, 2018Applicant: LOTTE CHEMICAL CORPORATIONInventors: Dong Jun Im, Bum Jin Park, Chang Min Seo
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Publication number: 20180085715Abstract: Disclosed herein is a membrane composition. The membrane composition includes: about 8 wt % to less than about 20 wt % of a vinylidene fluoride polymer resin; more than 60 wt % to about 90 wt % of a solvent; about 0.1 wt % to about 5 wt % of an acetylated methyl cellulose; and about 1 wt % to about 15 wt % of a hydrophilic additive.Type: ApplicationFiled: September 27, 2017Publication date: March 29, 2018Applicant: LOTTE CHEMICAL CORPORATIONInventors: Gyeong Mo Lee, Dong Chan Choi, Chang Min Seo
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Patent number: 9889410Abstract: A tubular braid, a hollow fiber membrane using the same, and a manufacturing method thereof. A hollow fiber membrane can maximize or increase adhesion between a polymer coating film and a tubular braid; significantly reduce degradation of film properties caused by non-uniform coating, that is, reduce leakage; obtain a higher percent rejection; and achieve high water permeability since the hollow fiber membrane has a larger inner diameter.Type: GrantFiled: May 16, 2013Date of Patent: February 13, 2018Assignee: LOTTE CHEMICAL CORPORATIONInventors: Chang Min Seo, Gyeong Mo Lee, Myoung Won Park
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Publication number: 20180013238Abstract: A female connector capable of easily confirming whether or not a male connector is connected thereto, a connector module having the male connector, and an electronic device having the connector module are disclosed. The female connector comprises a connector body, a first terminal engagement pin and a second terminal engagement pin. The first terminal engagement pin is disposed inside the connector body and capable of receiving an input signal from a connection terminal of a male connector when the connection terminal is in contact therewith. The second terminal engaging pin is disposed inside the connector body to be spaced apart from the first terminal engaging pin. The first and second terminal engagement pins are electrically connected with each other through the connection terminal when the connection terminal is inserted and coupled between the first and second terminal engagement pins.Type: ApplicationFiled: June 27, 2017Publication date: January 11, 2018Inventors: Jong Sik PARK, Dae Hyun JANG, Chang Min SEO
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Patent number: 9561475Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem common in prior art multifilament braid-supported tubular membranes. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable it can be infiltrated with membrane polymer which, when coagulated embeds the braid positioning it around the lumen. The spiral weave, free of any circumferentially constricting monofilament, when embedded in film, allows the membrane to be biaxially distensible. In other words, the membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.Type: GrantFiled: July 14, 2014Date of Patent: February 7, 2017Assignees: Lotte Chemical Corporation, Samsung SDI Co., Ltd.Inventors: Chang Min Seo, Gyeong Mo Lee
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Publication number: 20140339153Abstract: A hollow fiber membrane is formed by embedding a braid having a spiral open weave of monofilaments only, to avoid a “whiskering” problem common in prior art multifilament braid-supported tubular membranes. The open weave is characterized by contiguous, circumferential, rhomboid-shaped areas of polymer film separated by monofilaments. When the braid is supported on a plasticized PVA cable it can be infiltrated with membrane polymer which, when coagulated embeds the braid positioning it around the lumen. The spiral weave, free of any circumferentially constricting monofilament, when embedded in film, allows the membrane to be biaxially distensible. In other words, the membrane has “give” not only in the axial or longitudinal direction but also in the radial direction. “Give” in the radial direction permits soiled membranes to be backwashed under higher pressure than in a comparable braid which is not radially distensible.Type: ApplicationFiled: July 14, 2014Publication date: November 20, 2014Inventors: Chang Min Seo, Gyeong Mo Lee