Patents by Inventor Kyu Hwan An

Kyu Hwan An 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: 10450225
    Abstract: The present invention relates to a glass having a surface with improved water-repellency or hydrophobicity and low reflectance, and a fabrication method thereof. A technology is employed, in which a thin film containing silicon or silicon oxide is formed on the glass surface, the nano-structures are formed by selective etching treatment using a reactive gas such as CF4 or the like to provide superhydrophobicity and low reflectance properties, and a material with low surface energy is coated onto the nano-structures. The fabrication method of the low-reflective and superhydrophobic or super water-repellent glass may execute deposition and etching processes for the glass having the superhydrophobicity and the low reflectance, and provide excellent superhydrophobicity and low reflectance to the surface of the glass which was difficult to be treated. Also, the method is sustainable due to non-use of a toxic etching solution during these processes.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: October 22, 2019
    Assignee: Korea Institute of Science and Technology
    Inventors: Myoung Woon Moon, Heon Ju Lee, Jeong Sim Lee, Tae Jun Ko, Kyu Hwan Oh, Do Hyun Kim, Eu Sun Yu
  • Publication number: 20190280210
    Abstract: An organic light emitting diode includes: a first electrode; a second electrode facing the first electrode; a light emission layer between the first electrode and the second electrode; an electron injection layer between the second electrode and the light emission layer; and a buffer layer between the electron injection layer and the second electrode, where the electron injection layer includes a dipolar material and a first metal, and the buffer layer includes a metal having a work function of 4.0 eV or less.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: Seok Gyu YOON, Dong Chan KIM, Eung Do KIM, Bo Ra JUNG, Kyu Hwan HWANG, Sung Chul KIM, Won-Jong KIM, Young-Woo SONG, Jong Hyuk LEE
  • Patent number: 10400409
    Abstract: An oil-collecting apparatus includes: a body including an inlet through which a liquid is introduced, a first outlet through which purified water generated from the liquid introduced through the inlet is discharged, and a second outlet through which materials collected from the liquid are discharged; and a filter arranged at the first outlet of the body and generating the purified water by collecting the materials included in the liquid by allowing the liquid introduced through the inlet to pass therethrough.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: September 3, 2019
    Assignee: Korea Institute of Science and Technology
    Inventors: Heon Ju Lee, Myoung-Woon Moon, O Chang Kwon, Do Hyun Kim, Tae Jun Ko, Ho-Young Kim, Hyungmin Park, Kyu Hwan Oh
  • Publication number: 20190256050
    Abstract: A position detecting apparatus includes: a communicator performing pairing with a user terminal and transmitting a first signal including authentication information to the paired user terminal; a signal output device outputting a second signal generated based on the authentication information to an inside of a vehicle; and a vehicle controller generating the first signal and the second signal after the pairing with the user terminal is completed, and when a device authentication result is received from the user terminal based on the first signal and the second signal, detecting a position of the user terminal based on the received device authentication result.
    Type: Application
    Filed: June 5, 2018
    Publication date: August 22, 2019
    Inventors: Sin Jung KIM, Seok Han LEE, Sang Woo JI, Kyu Hwan CHIN
  • Publication number: 20190238106
    Abstract: Embodiments of radio frequency (RF) systems include a plurality of power amplifiers having a primary winding and a secondary winding. Each of the power amplifiers may be configured to process signals of different frequency bands. The primary winding for one power amplifier can be detuned while another power amplifier is being used in a transmit mode. By detuning the power amplifier, power coupling from the transmitting power amplifier can be reduced or eliminated.
    Type: Application
    Filed: December 21, 2018
    Publication date: August 1, 2019
    Inventors: Setu Mohta, Kyu Hwan An
  • Publication number: 20190236081
    Abstract: Technologies are described for performing synchronization within a database environment. A source host stores multiple database tables and a replica host stores copies of the multiple database tables. During synchronization, replication log replay is blocked at the replica node, and a multithreaded process locks the multiple database tables of the source hosts, reactivates replication log generation for each of the multiple database tables, and then unlocks the database tables. A synchronization timestamp is acquired and used to synchronize the multiple database tables with the copies of the multiple database tables. After synchronization, replication log replay is reactivated at the replica host for the copies of the multiple database tables.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Applicant: SAP SE
    Inventors: Chang Gyoo Park, Deok Koo Kim, Kyu Hwan Kim, Juchang Lee
  • Publication number: 20190222658
    Abstract: Technologies are described for facilitating replay of requests for database operations. A plurality of requests for database operations are received. Each of the plurality of requests includes a type, an access unit identifier, and a chronological identifier. Execution dependencies are determined between the plurality of requests based on the type, access unit identifier, and chronological identifier of each of the plurality of requests. The execution dependencies are stored.
    Type: Application
    Filed: March 22, 2019
    Publication date: July 18, 2019
    Applicant: SAP SE
    Inventors: Chang Gyoo Park, Juchang Lee, Kyu Hwan Kim, Chul Won Lee, Myunggon Park, Eunjin Song, Nosub Sung
  • Patent number: 10356911
    Abstract: An electronic device module includes: a board including at least one mounting electrode and at least one external connection electrode and having a protective insulation layer which is provided on an outer surface thereof; at least one electronic device mounted on the mounting electrodes; a molded part sealing the electronic device; and at least one connective conductor of which one end is bonded to the external connection electrode of the board and which penetrates through the molded part to be disposed in the molded part, wherein the protective insulation layer is disposed to be spaced apart from the connective conductor.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: July 16, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Do Jae Yoo, Jae Hyun Lim, Jong In Ryu, Kyu Hwan Oh, Ki Ju Lee
  • Publication number: 20190213203
    Abstract: Technologies are described for facilitating transaction processing within a database environment having a coordinator node, a first worker node, and at least a second worker node. The first worker node sends a request from to the coordinator node for at least a first synchronization token maintained by the coordinator node. The first worker node receives the at least a first synchronization token from the coordinator node. The first worker node assigns the at least a first synchronization token to a snapshot as a snapshot ID value. The snapshot is executed at the first worker node. The first worker node forwards the snapshot ID value to the at least a second worker node.
    Type: Application
    Filed: March 12, 2019
    Publication date: July 11, 2019
    Applicant: SAP SE
    Inventors: Juchang Lee, Chang Gyoo Park, Kyu Hwan Kim, Deok Koo Kim
  • Publication number: 20190161368
    Abstract: Provided are spilled oil collecting apparatus and method. The spilled oil collecting apparatus includes: a filter portion made of a porous substrate with hydrophilicity and having an open upper portion so as to collect oil; a frame portion provided at an upper end of the filter portion to support the filter portion; and a handle portion connected to the frame portion. According to the spilled oil collecting apparatus and method, it is possible to collect, separate, and store simultaneously spilled oil spilled from rivers or seas by using a porous substrate having hydrophilicity and optimize immediate collection of spilled oil by maximizing oil collection efficiency and minimizing labour force in an oil collecting process.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 30, 2019
    Inventors: Myoung Woon MOON, Young A LEE, Tae Jun KO, Min Sung KIM, O Chang KWON, Kyu Hwan OH
  • Publication number: 20190163300
    Abstract: The present invention relates to an ionic touch panel, and more particularly, to an ionic touch panel using hydrogel for a touch panel and having flexibility, stretchability, and biocompatibility. An ionic touch panel according to an embodiment of the present invention includes a hydrogel touch unit 100 containing salt, and electrodes connected to at least two parts of the hydrogel touch unit.
    Type: Application
    Filed: June 14, 2017
    Publication date: May 30, 2019
    Inventors: Jeong Yun SUN, Kyu Hwan OH, Chong Chan KIM, Hyun Hee LEE
  • Patent number: 10305042
    Abstract: An organic light emitting diode includes: a first electrode; a second electrode facing the first electrode; a light emission layer between the first electrode and the second electrode; an electron injection layer between the second electrode and the light emission layer; and a buffer layer between the electron injection layer and the second electrode, where the electron injection layer includes a dipolar material and a first metal, and the buffer layer includes a metal having a work function of 4.0 eV or less.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 28, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok Gyu Yoon, Dong Chan Kim, Eung Do Kim, Bo Ra Jung, Kyu Hwan Hwang, Sung Chul Kim, Won-Jong Kim, Young-Woo Song, Jong Hyuk Lee
  • Patent number: 10298702
    Abstract: Technologies are described for facilitating replay of requests for database operations. A plurality of requests for database operations are received. Each of the plurality of requests includes a type, an access unit identifier, and a chronological identifier. Execution dependencies are determined between the plurality of requests based on the type, access unit identifier, and chronological identifier of each of the plurality of requests. The execution dependencies are stored.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: May 21, 2019
    Assignee: SAP SE
    Inventors: Chang Gyoo Park, Juchang Lee, Kyu Hwan Kim, Chul Won Lee, Myunggon Park, Eunjin Song, Nosub Sung
  • Patent number: 10296632
    Abstract: Technologies are described for performing synchronization within a database environment. A source host stores multiple database tables and a replica host stores copies of the multiple database tables. During synchronization, replication log replay is blocked at the replica node, and a multithreaded process locks the multiple database tables of the source hosts, reactivates replication log generation for each of the multiple database tables, and then unlocks the database tables. A synchronization timestamp is acquired and used to synchronize the multiple database tables with the copies of the multiple database tables. After synchronization, replication log replay is reactivated at the replica host for the copies of the multiple database tables.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 21, 2019
    Assignee: SAP SE
    Inventors: Chang Gyoo Park, Deok Koo Kim, Kyu Hwan Kim, Juchang Lee
  • Publication number: 20190129254
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel having a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer which is disposed on the light source and converts the first color light into a second color light; an optical sheet which diffuses or condenses the second color light; and an air gap formed between the color conversion layer and the optical sheet.
    Type: Application
    Filed: September 25, 2018
    Publication date: May 2, 2019
    Inventors: Chang-Yul Moon, Je-Beom Park, Se-Hyun Park, Ji-Su Yoon, Kyu-Hwan Lee
  • Publication number: 20190129250
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel including a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer which is configured to convert the first color light into a second color light; an optical sheet which diffuses or condenses the second color light; and an air gap formed between the color conversion layer and the optical sheet.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 2, 2019
    Inventors: Se-Hyun Park, Min-Jae Kang, Ji-Su Yoon, Kyu-Hwan Lee
  • Publication number: 20190129253
    Abstract: The present disclosure is directed to a liquid crystal display device including a display panel having a red pixel, a green pixel, and a blue pixel; and a backlight unit configured to emit light to the display panel. The backlight unit includes a light source which outputs a first color light; a color conversion layer configured to convert the first color light into a second color light such that red light and green light are spatially separated; and an optical sheet which diffuses or condenses the second color light.
    Type: Application
    Filed: September 28, 2018
    Publication date: May 2, 2019
    Inventors: Chang-Yul Moon, Ji-Su Yoon, Kyu-Hwan Lee
  • Patent number: 10275508
    Abstract: A method may include receiving a query for data to be provided by a database server, wherein the query includes an indication of a maximum lag. The method may further include determining whether a hint is available to apply to the query, wherein the hint affects an execution of the query. When no hint is available, a baseline database server may be selected to be the database server. When the hint is available, a replication server or a cache server may be selected to be the database server based on the hint and the maximum lag. The query may be processed at the selected database server.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 30, 2019
    Assignee: SAP SE
    Inventors: Christian Bensberg, Norman May, Alexander Boehm, Juchang Lee, Sung Heun Wi, Jeong Ae Han, Ki Hong Kim, Kyu Hwan Kim, Chul Won Lee, Andreas Kemmler, Christoph Glania, Armin Risch, Kai Morich
  • Patent number: 10275401
    Abstract: A computer implemented method for initializing a first image of a first database from a recovery image; modifying the first image of the first database by replaying transaction logs of a second database; establishing a connection with a client; receiving a query via the connection, the query including a transaction to be executed on the first database; and rejecting the query when the transaction would cause any one of: updating of the first image of the first database; generating a new transaction log; and modifying the recovery image. Related apparatus, systems, techniques and articles are also described.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 30, 2019
    Assignee: SAP SE
    Inventors: Chul Won Lee, Kyu Hwan Kim, Marcel Birn, Jane Jung Lee, Di Wu, Juchang Lee, Zhi Qiao
  • Patent number: 10276873
    Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: April 30, 2019
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha