Patents Assigned to Korea Institute of Machinery & Materials
  • High-performance high-nitrogen duplex stainless steels excellent in pitting corrosion resistance
    Patent number: 9663850
    Abstract: The present invention relates to high-nitrogen duplex stainless steels with an excellent eco-index and pitting corrosion resistance, in particular, to providing duplex stainless steels with ferrite-austenite phases, including: 16.5-19.5 wt. % of chromium (Cr), 2.3-3.5 wt. % of molybdenum (Mo), 1.0-5.5 wt. % of tungsten (W), 5.5-7.0 wt. % of manganese (Mn), 0.35-0.45 wt. % of nitrogen (N), with a remainder of iron (Fe). The high nitrogen duplex stainless steels with excellent eco-index and pitting corrosion resistance according to the present invention use manganese (Mn) and nitrogen (N) to exclude or mostly substitute Ni, which increases price instability of the steel grades and environment burden, to result in enhancing economic efficiency, price stability and eco-friendliness.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: May 30, 2017
    Assignee: Korea Institute of Machinery and Materials
    Inventors: Heon Young Ha, Tae-Ho Lee, Byoung Chul Hwang
  • Linear flow regulating apparatus for intravenous infusion
    Patent number: 9662442
    Abstract: The present invention relates to a linear flow regulating apparatus for intravenous infusion, and more particularly, to a flow regulating apparatus which is used in an infusion set for intravenous infusion to regulate the flow rate of a solution injected into a body. To eliminate the difficulties caused by the nonlinearity of conventional flow regulating apparatuses, which regulate flow rates by pressing a solution flow tube to adjust the flow passage area, the linear flow regulating apparatus has a control unit to be put in or taken out along the width of a flow channel unit through which the solution flows when the height and length of the flow channel unit are fixed, and is capable of linearly regulating the flow rate by varying the flow passage area of the flow channel unit by adjusting the width of a flow channel unit.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: May 30, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Eui-Soo Yoon, Moo-Ryong Park, Bum Seog Choi, Jun Young Park, Il-Su Yoo, Jeong Min Seo, Soon-Chan Hwang
  • Method of stabilizing alpha-sialon phosphor raw powder, alpha-sialon phosphor composition obtained therefrom, and method of manufacturing alpha-sialon phosphor
    Patent number: 9657223
    Abstract: Disclosed herein is a method of stabilizing alpha-sialon phosphor, including the steps of: mixing raw powder including Si3N4, AlN, a rare-earth metal oxide and calcium nitride (Ca3N2) as a calcium source; heat-treating the raw powder to convert the calcium source into Ca—Al—Si—N based compound comprising CaAlSiN3 or CaAl2Si4N8; and sintering the heat-treated raw powder thereby forming alpha-sialon phosphor. This method is advantageous in that a reliable alpha-sialon phosphor having high photoluminescence intensity can be manufactured regardless of weather, season, environment and the like.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: May 23, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jin Myung Kim, Jae Wook Lee, Young Jo Park
  • MEMS microphone with dual-back plate and method of manufacturing the same
    Patent number: 9656854
    Abstract: Disclosed herein are a microelectromechanical systems (MEMS) microphone with a dual-back plate, and a method of manufacturing the same. The MEMS microphone according to an exemplary embodiment of the present invention includes: a substrate having a first back plate formed at a central portion thereof; a membrane plate disposed on first support parts formed at both sides on the substrate and vibrated depending on external sound pressure; and a second back plate disposed on second support parts formed at both sides of the membrane plate.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: May 23, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Shin Hur, Young Do Jung, Young Hwa Lee, Jun Hyuk Kwak, Chang-Hyeon Ji
  • Cochlear implant apparatus for active feedback control and active feedback control method for the same
    Patent number: 9656072
    Abstract: The present invention relates to a cochlear implant apparatus, and more particularly, to a cochlear implant apparatus capable of controlling the sensitivity or selectivity of sound through actuators. In accordance with an exemplary embodiment of the present invention, a cochlear implant apparatus for active feedback control which is inserted into the human body and configured to detect a sound in each frequency band includes a sensor unit configured to detect vibration according to a sound and generate an electrical signal corresponding to a magnitude of the vibration and actuators disposed in the sensor unit and each configured to react to the electrical signal and to control sensitivity according to the magnitude of the sound or the selectivity of a sound detected in each frequency band.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: May 23, 2017
    Assignees: KOREA INSTITUTE OF MACHINERY & MATERIALS, INDUSTRIAL COOPERATION FOUNDATION OF CHONBUK NATIONAL UNIVERSITY
    Inventors: Wan-Doo Kim, Shin Hur, Young Do Jung, Yoon-Bong Hahn, Yong-Kyu Park, Seung Ha Oh, Juyong Chung, Sung June Kim, Yoon-Kyu Song, Won Hee Lee
  • Method for forming quantum dot thin film
    Patent number: 9644077
    Abstract: A method for manufacturing a quantum dot thin film includes applying a tensile force to a substrate to elongate the substrate, coating a quantum dot particle on the substrate to form a quantum dot thin film, replacing a ligand of the quantum dot particle, and removing the tensile force from the substrate. The method may reduce a crack in a quantum dot thin film.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: May 9, 2017
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Hyung-Cheoul Shim, So-Hee Jeong, Won-Seok Chang
  • Method of manufacturing wire grid polarizer
    Patent number: 9638851
    Abstract: A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 2, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jun-Ho Jeong, Junhyuk Choi, Dae-Guen Choi, So Hee Jeon, Ji Hye Lee, Joo Yun Jung, Soon-Hyoung Hwang, Sang Keun Sung
  • Composite heat-dissipation substrate and manufacturing method of the same
    Patent number: 9611415
    Abstract: The present disclosure provides a composite heat-dissipation substrate and a method of manufacturing the same. The composite heat-dissipation substrate includes a first ceramic layer having insulating properties, a second porous ceramic layer and a metal layer, wherein the first ceramic layer and the second ceramic layer are continuously connected to each other so as not to form an interface therebetween, and the metal layer is infiltrated into plural pores of the second ceramic layer to be coupled to the ceramic layers, whereby interfacial coupling force between the ceramic layers and the metal layer is very high, thereby providing significantly improved heat dissipation characteristics.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 4, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Sang-Kwan Lee, Sang-Bok Lee, Jung-Yeul Yun
  • SiC POWDER, SiC SINTERED BODY, SiC SLURRY AND MANUFACTURING METHOD OF THE SAME
    Publication number: 20170076835
    Abstract: A method of manufacturing a silicon carbide (SiC) sintered body and a SiC sintered body obtained by the method are provided. The method includes: preparing a composite powder by subjecting a SiC raw material and a sintering aid raw material to mechanical alloying; and sintering the composite powder, wherein the sintering aid is at least one selected from the group consisting of an Al—C-based material, an Al—B—C-based material, and a B—C-based material. Accordingly, a SiC sintered body that can be sintered at low temperature, can be densified, and has high strength and high electrical conductivity can be prepared.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 16, 2017
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Sea Hoon LEE, Bola YOON, Jin Myung KIM
  • Method of manufacturing wire grid polarizer
    Patent number: 9581746
    Abstract: A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: February 28, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jun-Ho Jeong, Junhyuk Choi, Dae-Guen Choi, So Hee Jeon, Ji Hye Lee, Joo Yun Jung, Soon-Hyoung Hwang, Sang Keun Sung
  • Substrate for surface-enhanced Raman spectroscopy and method for producing same
    Patent number: 9557272
    Abstract: Disclosed are a substrate for surface-enhanced Raman spectroscopy allowing surface-enhanced Raman signals to be notably improved, even in cases of long-term storage, by producing the substrate so that metal nanoparticles thereon are distanced several nanometers apart, and a method for producing the substrate for surface-enhanced Raman spectroscopy at a large scale with simple equipment and at a low production cost.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: January 31, 2017
    Assignees: Korea Institute of Machinery & Materials, Korea Research Institute of Chemical Technology
    Inventors: Yung Doug Suh, Jung Heum Yun, Sung Gyu Park, Hae Mi Lee, Gun Hwan Lee, Dong Ho Kim
  • Apparatus and method for liquid transfer imprint lithography using a roll stamp
    Patent number: 9527235
    Abstract: In an apparatus and a method for liquid transfer imprint lithography, the apparatus includes a roll unit, a plane unit and a control unit. The roll unit includes a roll stamp, a horizontal moving stage, a roll angular compensating stage and a roll rotating part. The plane unit is disposed under the roll unit and includes a first substrate, a first fixing chuck, a first substrate driving part, a second substrate, a second fixing chuck and a second substrate driving part. The control unit controls an operation of the roll unit and the plane unit.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: December 27, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jae-Jong Lee, Hyung-Jun Lim, Kee-Bong Choi, Gee-Hong Kim
  • Convergence machining apparatus based on turning
    Patent number: 9517508
    Abstract: Disclosed is a convergence machining apparatus based on turning in which a rotational axis of a work piece fixed by a headstock and a tailstock and a center of a width of a slide surface of a bed on which a reciprocal carriage installed with a tool is transferred while being supported are positioned at the same virtual plane, thereby preventing an offset error according to a relative displacement between the work piece and the tool during processing.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 13, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jong-Kweon Park, Seung Kook Ro, Byung-Sub Kim, Sung Cheul Lee, Gyung Ho Khim, Sung-Kwon Jang, Soo Chang Choi
  • Quantum dot stabilized by halogen salt and method for manufacturing the same
    Patent number: 9517936
    Abstract: A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: December 13, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Sohee Jeong, Ju Young Woo, Doh Chang Lee, Won Seok Chang, Duck Jong Kim
  • Apparatus and method for synchronizing a roll-to-roll transfer device
    Patent number: 9511581
    Abstract: In an apparatus and a method for synchronizing a roll-to-roll transfer device, the apparatus includes a thin-film, a first roller, a second roller, a first load sensing element and a control part. The thin-film is transferred by the roll-to-roll transfer device. The first roller makes contact with a lower surface of the thin-film, and rotates with a rotational axis via a first rotational element. The second roller is disposed over the first roller, makes contact with an upper surface of the thin-film, and rotates with the rotational axis via a second rotational element. The first load sensing element senses a load of the first roller or a load of the second roller. The control part synchronizes a translational velocity of the first rotational element or the second rotational element based on the load sensed by the first load sensing element.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: December 6, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Bongkyun Jang, Jae-Hyun Kim, Kwang-Seop Kim, Hak-Joo Lee
  • Plasma reactor for abatement of hazardous material
    Patent number: 9472381
    Abstract: A plasma reactor for abating hazardous materials included in process gases while being installed on an exhaust path of the process gases toward a vacuum pump is provided. The plasma reactor includes an insulator having a pipe shape through which process gases pass, a first ground electrode connected to a front end of the insulator facing the process chamber, a second ground electrode connected to a rear end of the insulator and provided with a facing part that faces a center of the inside of the insulator along the moving direction of process gases, and a driving electrode fixed to an external circumferential surface of the insulator and connected to a power supply applying an AC or RF voltage.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 18, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Min Hur, Woo Seok Kang, Jae Ok Lee
  • COATING COMPOSITION FOR TRANSPARENT ELECTRODE PASSIVATION LAYER AND TRANSPARENT ELECTRODE HAVING PASSIVATION LAYER
    Publication number: 20160276058
    Abstract: Provided is a coating composition for a transparent electrode passivation layer, the coating composition including a metal oxide and at least one selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, and tetraethylene glycol. When a passivation layer formed using the coating composition for a transparent electrode passivation layer according to the present invention is applied to a transparent electrode, the passivation layer is capable of ensuring the heat resistance and durability of the transparent electrode while maintaining the transmittance of the transparent electrode. Particularly, the coating composition for a transparent electrode passivation layer according to the present invention exhibits excellent hardness.
    Type: Application
    Filed: December 30, 2015
    Publication date: September 22, 2016
    Applicant: KOREA INSTITUTE OF MACHINERY AND MATERIALS
    Inventors: Chang Su Kim, Dong Ho Kim, Myung Kwan Song, Han-Soo Shim, Yu Hong Cheon
  • Methods of manufacturing metal wiring buried flexible substrate and flexible substrates manufactured by the same
    Patent number: 9445504
    Abstract: Disclosed are a method of manufacturing a metal wiring buried flexible substrate and a flexible substrate manufactured by the same. The method includes coating a sacrificial layer including a polymer soluble in water or an organic solvent, or a photodegradable polymer on a substrate (Step 1), forming a metal wiring on the sacrificial layer in Step 1 (Step 2), forming a metal wiring buried polymer layer by coating a curable polymer on the sacrificial layer including the metal wiring formed thereon in Step 2 and curing (Step 3) and separating the polymer layer in Step 3 from the substrate in Step 1 by removing through dissolving in the water or the organic solvent or photodegrading only the sacrificial layer present between the substrate in Step 1 and the polymer layer in Step 3 (Step 4).
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 13, 2016
    Assignee: Korea Institute of Machinery and Materials
    Inventors: Jae Wook Kang, Do Geun Kim, Jong Kuk Kim, Sung Hun Jung, Myungkwan Song, Dae Sung You, Chang Soo Kim, Kee Seok Nam
  • Manufacturing method of titanium alloy with high-strength and high-formability and its titanium alloy
    Patent number: 9435017
    Abstract: A method of manufacturing a titanium alloy with high strength and high formability, the method including preparing a titanium alloy material and equipment for manufacturing the titanium alloy, manufacturing the titanium alloy having a lamellar structure (martensite structure) by cooling the prepared titanium alloy material with water after performing heat treatment at the beta transformation temperature or more, and rolling that makes ultrafine grains by finishing forming of the titanium alloy at a plastic instability temperature or less of an initial lamellar structure by gradually decreasing the forming temperature in accordance with an increase of a strain after starting the forming at the plastic instability temperature or more of an initial lamellar structure, under a condition of a low strain in which the strain is 2.5 or less, after the manufacturing of a titanium alloy having a lamellar structure.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: September 6, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Chan Hee Park, Chang Seok Oh, Jong Taek Yeom, Jae Keun Hong, Chong Soo Lee, Yong Taek Hyun
  • Printing apparatus and method for measuring and compensating for synchronization error
    Patent number: 9421753
    Abstract: A printing apparatus for measuring and compensating for a synchronization error is provided.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 23, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dong Woo Kang, Taik Min Lee, In Young Kim, Young Man Choi, Seung-Hyun Lee, Deok Kyun Yoon