Patents by Inventor Taejun Yoo

Taejun Yoo 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).

  • Publication number: 20240079328
    Abstract: A semiconductor device includes a logic cell region on a substrate, an interconnection layer on the logic cell region, the interconnection layer including a plurality of metal layers on the logic cell region, and a first vertical structure in the interconnection layer, where the first vertical structure vertically connects the logic cell region to an uppermost metal layer of the plurality of metal layers, each of the plurality of unit structures includes a lower via, a lower interconnection line, an upper via, and an upper interconnection line, the lower interconnection line and the upper interconnection line of each respective unit structure of the plurality of unit structures cross each other, and the upper interconnection line of each of the plurality of unit structures includes a first upper interconnection line.
    Type: Application
    Filed: April 11, 2023
    Publication date: March 7, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Taejun YOO, Changbeom KIM, Taejung SEOL
  • Publication number: 20230077532
    Abstract: A standard cell and an integrated circuit including the same are is provided. The standard cell is provided in first and second rows. The standard cell includes: a first circuit region provided in the first row and including a plurality of first transistors; a second circuit region provided in the second row and including a plurality of second transistors; a first input pin provided in the first circuit region and configured to receive a first input signal; and a second input pin provided in the second circuit region and configured to receive a second input signal. The first input signal is input to gate terminals of each of the plurality of first transistors, and the second input signal is input to gate terminals of each of the plurality of second transistors. The first circuit region is symmetric with respect to a second horizontal direction and the second circuit region is symmetric with respect to the second horizontal direction.
    Type: Application
    Filed: September 16, 2022
    Publication date: March 16, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wookyu KIM, Changbeom Kim, Taejun Yoo, Seungmin Lee
  • Publication number: 20230029260
    Abstract: A semiconductor device according to an embodiment of the present inventive concept includes a plurality of standard cells in a first direction and a second direction, parallel to an upper surface of a substrate and intersecting with each other, and each of the plurality of standard cells having one or more gate structures and one or more active regions, and in some standard cells providing the same circuit and in standard cell regions at different locations, input lines or/and output lines are at different locations.
    Type: Application
    Filed: April 18, 2022
    Publication date: January 26, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jaeha LEE, Hyeongkyu KIM, Taejun YOO, Unseon CHEON
  • Patent number: 11424251
    Abstract: A semiconductor device is provided. The semiconductor device includes power supply lines extending in a first direction; first transistors, each of which is formed in a first region and has a first threshold voltage; and second transistors, each of which is formed in a second region and has a second threshold voltage higher than the first threshold voltage. One of the plurality of power supply lines is interposed between the first region and the second region, the first transistors implement a first portion of a multiplexer, a clock buffer and a first latch that are disposed on a data path, the second transistors implement a second portion of the multiplexer circuit and a second latch that are disposed on a feedback path, and the first portion of the multiplexer circuit and the second portion of the multiplexer circuit are disposed in a common location along the first direction.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: August 23, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byounggon Kang, Taejun Yoo, Seunghyun Yang, Dalhee Lee
  • Publication number: 20220108989
    Abstract: A semiconductor device is provided. The semiconductor device includes power supply lines extending in a first direction; first transistors, each of which is formed in a first region and has a first threshold voltage; and second transistors, each of which is formed in a second region and has a second threshold voltage higher than the first threshold voltage. One of the plurality of power supply lines is interposed between the first region and the second region, the first transistors implement a first portion of a multiplexer, a clock buffer and a first latch that are disposed on a data path, the second transistors implement a second portion of the multiplexer circuit and a second latch that are disposed on a feedback path, and the first portion of the multiplexer circuit and the second portion of the multiplexer circuit are disposed in a common location along the first direction.
    Type: Application
    Filed: March 31, 2021
    Publication date: April 7, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byounggon Kang, Taejun Yoo, Seunghyun Yang, Dalhee Lee
  • Patent number: 11117988
    Abstract: A macromonomer precursor is provided that includes a polymeric chain derived from farnesene and a single functional terminal end. The functional terminal end may include a hydroxyl group, an amino group, an epoxy group, an isocyanato group, or a carboxylic acid group. The terminal end of the macromonomer precursor may then be reacted with a (meth)acrylate to form a macromonomer having a (meth)acrylate functionalized terminal end that may be (co)polymerized with radically polymerizable monomers, such as alkyl(meth)acrylate monomers. Alternatively, a copolymer may be obtained by first deriving a poly(meth)acrylate from (meth)acrylate monomers having reactive groups that would allow the macromonomer precursors to be grafted onto the poly(meth)acrylate in a second step. The resulting copolymer may be incorporated as an additive in various formulations, such as a lubricant, a hydraulic fluid, a cosmetic composition, and an adhesive composition.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 14, 2021
    Assignee: Fina Technology, Inc.
    Inventors: Steven K Henning, Taejun Yoo, Herbert S Chao
  • Patent number: 10745503
    Abstract: Aspects of the present invention relate to polymers, and particularly to farnesene polymers functionalized with one or more oxirane groups and, optionally, one or more hydroxyl groups. According to one aspect of the invention, provided is an epoxidized and optionally hydroxyl-functionalized polyfarnesene. The epoxidized farnesene polymer has at least one of a side chain or a main backbone functionalized with at least one oxirane group and, optionally, at least one terminal end functionalized with a hydroxyl group. In accordance with another aspect of the invention, a method is provided for preparing an epoxidized and optionally hydroxyl-functionalized polyfarnesene. The method includes epoxidizing a farnesene polymer, which may optionally contain one or more terminal hydroxyl groups, to functionalize at least one of a side chain or a main backbone of the farnesene polymer with an oxirane group.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: August 18, 2020
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Herbert Chao, Taejun Yoo, Sabrina Nehache
  • Publication number: 20200123285
    Abstract: A macromonomer precursor is provided that includes a polymeric chain derived from farnesene and a single functional terminal end. The functional terminal end may include a hydroxyl group, an amino group, an epoxy group, an isocyanato group, or a carboxylic acid group. The terminal end of the macromonomer precursor may then be reacted with a (meth)acrylate to form a macromonomer having a (meth)acrylate functionalized terminal end that may be (co)polymerized with radically polymerizable monomers, such as alkyl(meth)acrylate monomers. Alternatively, a copolymer may be obtained by first deriving a poly(meth)acrylate from (meth)acrylate monomers having reactive groups that would allow the macromonomer precursors to be grafted onto the poly(meth)acrylate in a second step. The resulting copolymer may be incorporated as an additive in various formulations, such as a lubricant, a hydraulic fluid, a cosmetic composition, and an adhesive composition.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Applicant: Fina Technology, Inc.
    Inventors: Steven K. Henning, Taejun Yoo, Herbert S. Chao
  • Patent number: 10544241
    Abstract: A macromonomer precursor is provided that includes a polymeric chain derived from farnesene and a single functional terminal end. The functional terminal end may include a hydroxyl group, an amino group, an epoxy group, an isocyanato group, or a carboxylic acid group. The terminal end of the macromonomer precursor may then be reacted with a (meth)acrylate to form a macromonomer having a (meth)acrylate functionalized terminal end that may be (co)polymerized with radically polymerizable monomers, such as alkyl(meth)acrylate monomers. Alternatively, a copolymer may be obtained by first deriving a poly(meth)acrylate from (meth)acrylate monomers having reactive groups that would allow the macromonomer precursors to be grafted onto the poly(meth)acrylate in a second step. The resulting copolymer may be incorporated as an additive in various formulations, such as a lubricant, a hydraulic fluid, a cosmetic composition, and an adhesive composition.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: January 28, 2020
    Assignee: Fina Technology, Inc.
    Inventors: Steven K. Henning, Taejun Yoo, Herbert S. Chao
  • Patent number: 10370523
    Abstract: Curable compositions are prepared using polyisocyanates, hydrophobic hydroxyl-terminated polymers (such as hydroxyl-terminated polyfarnesenes and hydroxyl-terminated polydienes) and organically-modified nanoclays, optionally in combination with chain extenders and/or urethane catalysts. When cured, the compositions yield polyurethane-based sealants useful in insulating glass units which have improved (lowered) moisture vapor transmission rate values as a consequence of the inclusion of the organically-modified nanoclays.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: August 6, 2019
    Assignee: Fina Technology, Inc.
    Inventors: Herbert Chao, Taejun Yoo, Nan Tian
  • Patent number: 10336839
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: July 2, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Taejun Yoo, Herbert Chao, Steven K Henning
  • Patent number: 10239973
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: March 26, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Taejun Yoo, Herbert Chao, Steven K Henning
  • Publication number: 20190055336
    Abstract: Aspects of the present invention relate to polymers, and particularly to farnesene polymers functionalized with one or more oxirane groups and, optionally, one or more hydroxyl groups. According to one aspect of the invention, provided is an epoxidized and optionally hydroxyl-functionalized polyfarnesene. The epoxidized farnesene polymer has at least one of a side chain or a main backbone functionalized with at least one oxirane group and, optionally, at least one terminal end functionalized with a hydroxyl group. In accordance with another aspect of the invention, a method is provided for preparing an epoxidized and optionally hydroxyl-functionalized polyfarnesene. The method includes epoxidizing a farnesene polymer, which may optionally contain one or more terminal hydroxyl groups, to functionalize at least one of a side chain or a main backbone of the farnesene polymer with an oxirane group.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 21, 2019
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Herbert CHAO, Taejun YOO, Sabrina NEHACHE
  • Publication number: 20180319914
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Application
    Filed: July 17, 2018
    Publication date: November 8, 2018
    Inventors: Taejun Yoo, Herbert Chao, Steven K Henning
  • Publication number: 20180282524
    Abstract: Curable compositions are prepared using polyisocyanates, hydrophobic hydroxyl-terminated polymers (such as hydroxyl-terminated polyfarnesenes and hydroxyl-terminated polydienes) and organically-modified nanoclays, optionally in combination with chain extenders and/or urethane catalysts. When cured, the compositions yield polyurethane-based sealants useful in insulating glass units which have improved (lowered) moisture vapor transmission rate values as a consequence of the inclusion of the organically-modified nanoclays.
    Type: Application
    Filed: April 3, 2017
    Publication date: October 4, 2018
    Applicant: Fina Technology, Inc.
    Inventors: Herbert CHAO, Taejun YOO, Nan TIAN
  • Publication number: 20180072826
    Abstract: A macromonomer precursor is provided that includes a polymeric chain derived from farnesene and a single functional terminal end. The functional terminal end may include a hydroxyl group, an amino group, an epoxy group, an isocyanato group, or a carboxylic acid group. The terminal end of the macromonomer precursor may then be reacted with a (meth)acrylate to form a macromonomer having a (meth)acrylate functionalized terminal end that may be (co)polymerized with radically polymerizable monomers, such as alkyl(meth)acrylate monomers. Alternatively, a copolymer may be obtained by first deriving a poly(meth)acrylate from (meth)acrylate monomers having reactive groups that would allow the macromonomer precursors to be grafted onto the poly(meth)acrylate in a second step. The resulting copolymer may be incorporated as an additive in various formulations, such as a lubricant, a hydraulic fluid, a cosmetic composition, and an adhesive composition.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 15, 2018
    Applicant: Fina Technology, Inc.
    Inventors: Steven K. Henning, Taejun Yoo, Herbert S. Chao
  • Publication number: 20180072831
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 15, 2018
    Inventors: Taejun Yoo, Herbert Chao, Steven K. Henning
  • Patent number: 9850329
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: December 26, 2017
    Assignee: Fina Technology, Inc.
    Inventors: Taejun Yoo, Herbert Chao, Steven K. Henning
  • Publication number: 20160376386
    Abstract: A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 29, 2016
    Applicant: Fina Technology, Inc.
    Inventors: Taejun YOO, Herbert Chao, Steven K. Henning
  • Patent number: 8137492
    Abstract: An apparatus for laminating tape on an electrode for a rechargeable battery includes a supplying section for supplying an electrode having a current collector with surfaces on which active materials are coated at constant distances from each other. The electrode is wound a plurality of times on the supplying section. The apparatus also includes a first buffering section for carrying the electrode from the supplying section at a constant rate and a laminating section for receiving the electrode from the first buffering section and stopping movement of the electrode for a predetermined time. The laminating section laminates tape on end portions of the active materials after stopping the movement. A feeding section conveys the electrode from the laminating section at a desired pitch. A second buffering section carries the electrode from the feeding section at a predetermined rate and a winding section receives the electrode from the second buffering section.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: March 20, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dong Ick Oh, Taejun Yoo