Patents by Inventor Hyung Choi

Hyung Choi 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).

  • Methods for Encapsulation of Actives within Droplets and other Compartments
    Publication number: 20160144330
    Abstract: The present invention generally relates to microparticles and, in particular, to systems and methods for encapsulation within microparticles. In one aspect, the present invention is generally directed to microparticles containing entities therein, where the entities contain an agent that can be released from the microparticles, e.g., via diffusion. In some cases, the agent may be released from the microparticles without disruption of the microparticles. The entities may be, for instance, polymeric particles, hydrogel particles, droplets of fluid, etc. The entities may be contained within a fluid that is, in turn, encapsulated within the microparticle. The agent may be released from the entity into the fluid, and then from the fluid through the microparticle. In such fashion, the release of agent from the microparticle may be controlled, e.g., over relatively long time scales.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 26, 2016
    Inventors: John Christopher Wesner, Marco Caggioni, Taotao Zhu, David A. Weitz, Alireza Abbaspourrad, Chang-Hyung Choi
  • Compositions Comprising Encapsulated Actives within Droplets and other Compartments
    Publication number: 20160145535
    Abstract: The present invention generally relates to microparticles and, in particular, to systems and methods for encapsulation within microparticles. In one aspect, the present invention is generally directed to microparticles containing entities therein, where the entities contain an agent that can be released from the microparticles, e.g., via diffusion. In some cases, the agent may be released from the microparticles without disruption of the microparticles. The entities may be, for instance, polymeric particles, hydrogel particles, droplets of fluid, etc. The entities may be contained within a fluid that is, in turn, encapsulated within the microparticle. The agent may be released from the entity into the fluid, and then from the fluid through the microparticle. In such fashion, the release of agent from the microparticle may be controlled, e.g., over relatively long time scales.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 26, 2016
    Inventors: John Christopher Wesner, Marco Caggioni, Taotao Zhu, David A. Weitz, Alireza Abbaspourrad, Chang-Hyung Choi
  • DISPLAY DEVICE HAVING A TOUCH UNIT
    Publication number: 20160092001
    Abstract: A display device includes a first substrate and a second substrate disposed above the first substrate. A touch unit is disposed on the second substrate. A window is disposed on the touch unit. The window covers the first and second substrates. A touch printed circuit board is disposed on the second substrate. The touch printed circuit board is coupled to the touch unit. An adhesive layer is disposed between the first substrate and the window. A plurality of spacers are disposed between the touch printed circuit board and the window. Each of the plurality of spacers is spaced apart from each other.
    Type: Application
    Filed: April 13, 2015
    Publication date: March 31, 2016
    Inventor: Sun Hyung CHOI
  • Light emitting diode integrated with lens, line printer head, and method of manufacturing the light emitting diode
    Patent number: 9278545
    Abstract: Provided are a light emitting diode unit including a light emitting diode integrated with a lens, a line printer head using the light emitting diode, and a method of manufacturing the light emitting diode. The light emitting diode unit includes the light emitting diode layer bonded to a transparent substrate after removing a growth substrate on which the light emitting layer is grown, and a lens that refracts light emitted from the light emitting diode is formed on the transparent substrate.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok-Jin Kang, Hyung Choi, Eung-Yeoul Yoon
  • Micro-optical switching device, image display apparatus including micro-optical switching device, and method of manufacturing micro-optical switching device
    Patent number: 9164278
    Abstract: A micro-optical switching device, an image display apparatus including the micro-optical switching device, and a method of manufacturing the micro-optical switching device are provided. The micro-optical switching device includes a substrate; a first electrode disposed on the substrate and including a first opening array, wherein the first opening array includes a plurality of openings; and a second electrode disposed spaced apart from the first electrode and including a second opening array including a plurality of openings, wherein the plurality of openings of the second opening array do not overlap with the plurality of openings of the first opening array.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik Shim, Jong-seok Kim, Yong-seop Yoon, Hyung Choi, Woon-bae Kim
  • Light emitting diode integrated with lens, line printer head, and method of manufacturing the light emitting diode
    Patent number: 9156280
    Abstract: Provided are a light emitting diode unit including a light emitting diode integrated with a lens, a line printer head using the light emitting diode, and a method of manufacturing the light emitting diode. The light emitting diode unit includes the light emitting diode layer bonded to a transparent substrate after removing a growth substrate on which the light emitting layer is grown, and a lens that refracts light emitted from the light emitting diode is formed on the transparent substrate.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: October 13, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok-Jin Kang, Hyung Choi, Eung-Yeoul Yoon
  • Driving device of display apparatus and method of manufacturing the driving device
    Patent number: 9110318
    Abstract: A driving device of a display apparatus, and a method of manufacturing the driving device. The driving device may have a specific structure, and be manufactured in such a manner, because a first electrode of a micro optical switch device may be formed simultaneously with the formation of at least a source region and a drain region, or a gate electrode of an active device and a capacitor electrode.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 18, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik Shim, Woon-bae Kim, Hyung Choi
  • SIC MATRIX FUEL CLADDING TUBE WITH SPARK PLASMA SINTERED END PLUGS
    Publication number: 20150078505
    Abstract: A method of providing an end-capped tubular ceramic composite for containing nuclear fuel (34) in a nuclear reactor involves the steps of providing a tubular ceramic composite (40), providing at least one end plug (14, 46, 48), applying (42) the at least one end plug material to the ends of the tubular ceramic composite, applying electrodes to the end plug and tubular ceramic composite and applying current in a plasma sintering means (10, 50) to provide a hermetically sealed tube (52). The invention also provides a sealed tube made by this method.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicants: Kabushiki Kaisha /Toshiba, aka Toshiba Corporation, Westinghouse Electric Company LLC
    Inventors: PENG XU, Edward J. Lahoda, Lars Hallstadius, Joon Hyung Choi, Shinichi Higuchi, Fumisha Kano
  • VIBRATION MODULE BASED ON PIEZOELECTRIC DEVICE
    Publication number: 20150054381
    Abstract: A vibration module based on a piezoelectric device includes: a piezoelectric device; a vibration plate connected to one side of the piezoelectric device by a medium of an adhesive and an intermediate material; the intermediate material interposed between the piezoelectric device and the vibration plate; and a molding part formed on the side of the piezoelectric device where the intermediate material is not formed.
    Type: Application
    Filed: August 28, 2013
    Publication date: February 26, 2015
    Applicant: WISOL CO., LTD.
    Inventors: Jae Hyung CHOI, Yukihiro NORO, Yo Sep CHOI, Jung Rae NOH
  • METHOD FOR PREPARING VOLATILE FATTY ACIDS FROM THE PRE-TREATED EXTRACTS OF MARINE BIOMASS RESIDUE
    Publication number: 20140199738
    Abstract: A method of preparing a volatile fatty acids (VFAs) is provided. More particularly, the method includes chemically or biologically pretreating a residue of algae to obtain an extract of the algae residue, filtering the extract of the algae residue and anaerobically fermenting the filtrate. The method of preparing VFAs can be used regardless of the kinds of algae, a process of producing VFAs can be simplified since there is no need to develop an enzyme for anaerobic fermentation, and a yield of VFAs can be increased since the VFAs can be produced from different kinds of organic components such as proteins or fats in addition to carbohydrates. Accordingly, the method can be useful in producing VFAs in an economical and efficient manner.
    Type: Application
    Filed: December 16, 2011
    Publication date: July 17, 2014
    Applicant: Pukyong National University Industry- University Cooperation Foundation
    Inventors: Hee-Chul Woo, Ho-Nam Chang, Yeong-Joong Jeon, Dong-Jin Suh, Byung-Soo Chun, Kyeong-Keun Oh, Kyoung-Heon Kim, Du-Woon Kim, Jae-Hyung Choi
  • DRIVING DEVICE OF DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE DRIVING DEVICE
    Publication number: 20140131744
    Abstract: A driving device of a display apparatus, and a method of manufacturing the driving device. The driving device may have a specific structure, and be manufactured in such a manner, because a first electrode of a micro optical switch device may be formed simultaneously with the formation of at least a source region and a drain region, or a gate electrode of an active device and a capacitor electrode.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik SHIM, Woon-bae KIM, Hyung CHOI
  • MICRO OPTICAL SWITCH DEVICE, IMAGE DISPLAY APPARATUS INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE MICRO OPTICAL SWITCH DEVICE
    Publication number: 20140133003
    Abstract: A micro optical switch device, an image display apparatus including the same, and a method of manufacturing the micro optical switch device are provided.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik SHIM, Woon-bae KIM, Hyung CHOI
  • Method for Indexation and Level Classification of Kinesthetic Gifted Infants
    Publication number: 20140074268
    Abstract: Provided is a method for developing an assessment table which is used as a standard for measuring kinesthetic giftedness of preschoolers, that is, 5 to 7 years old infants, for indexation of the kinesthetic giftedness based on measured data for each section and factor using the assessment table, and for classifying the kinesthetic giftedness into levels, so as to identify and assess detailed abilities and potential of kinesthetic gifted infants.
    Type: Application
    Filed: December 15, 2012
    Publication date: March 13, 2014
    Inventor: Moon Hyung CHOI
  • LIGHT SCANNING PROBE AND MEDICAL IMAGING APPARATUS EMPLOYING THE SAME
    Publication number: 20130345557
    Abstract: A light scanning probe includes: a probe main body; a light scanner that includes a scanner module that is driven to rotate and a beam reflector that includes a plurality of reflection surfaces which alter a path of light being scanned by the scanner module, wherein the light scanner is disposed within the probe main body; and an optical fiber that guides light which is received from a light input unit toward the scanner module. A medical imaging apparatus includes the light scanning probe that irradiates light toward an object; a receiver that receives a signal which is generated in the object; and a signal processor that processes the signal received by the receiver.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 26, 2013
    Inventors: Jong-seok KIM, Sung-chan KANG, Woon-bae KIM, Yong-seop YOON, Hyung CHOI
  • Light emitting diode array including apertures, line printer head, and method of manufacturing the light emitting diode array
    Patent number: 8581945
    Abstract: A light emitting diode array including apertures, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes the apertures that are formed in a substrate and restrict tunnels of light emitted from a plurality of light emitting diodes. Also, a lens that refracts the light transmitted through the plurality of apertures is included.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Jin Kang, Hyung Choi, Eung-Yeoul Yoon
  • Light emitting diode array integrated with lens, line printer head, and method of manufacturing the light emitting diode array
    Patent number: 8525862
    Abstract: A lens integrated light emitting diode array, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes a plurality of light emitting diodes formed on a surface of a transparent substrate and a plurality of lenses formed on another surface opposite to the surface of the transparent substrate, wherein the plurality of light emitting diodes are divided into a plurality of groups to be arranged to respectively correspond to the plurality of lenses.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-jin Kang, Hyung Choi, Eung-yeoul Yoon
  • Apparatus for and method of controlling jetting of ink in inkjet printer
    Patent number: 8474937
    Abstract: Provided are an apparatus and method of controlling jetting of ink of an inkjet printer. The apparatus includes at least one print head chip, which includes a temperature sensor for sensing the temperature of the print head chip and a voltage controlled oscillator (VCO) for converting the sensed temperature to a frequency component. The apparatus may also include a counter, which converts the frequency component to a code information using a reference frequency component, and a controller, which controls the ink jetting operation of the at least one print head chip based on the code information and/or the frequency component.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: July 2, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Won Jeong, Hyung Choi, Yong-Seop Yoon, Moon-Chul Lee, Dong-Shik Shim
  • Apparatus to sense temperature of ink-jet head
    Patent number: 8419158
    Abstract: An apparatus to sense the temperature of an ink-jet head includes at least one or more CMOS (complementary metal oxide semiconductor) lateral BJTs (bipolar junction transistors) to sense the temperature of the ink-jet head, and a current supply unit to supply a current to the CMOS lateral BJTs. Minimum sized CMOS lateral BJTs are applied to an ink-jet printer head so that precise temperature control can be performed in a shuttle or array type ink-jet printer.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: April 16, 2013
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Yong-won Jeong, Hyung Choi, Eun-bong Han, Yong-seop Yoon, Moon-chul Lee, Dong-sik Shim
  • TRANSMISSIVE AND REFLECTIVE-MODE CONVERTIBLE DISPLAY
    Publication number: 20130088856
    Abstract: A transmissive and reflective mode convertible display is provided including a converting unit convertible between a reflective mirror layer state and a light transmitting layer state and a shutter unit. Based on the state of the converting unit, the display may be drive to utilize light from a backlight transmitted through the converting unit or external light reflected off the converting unit.
    Type: Application
    Filed: July 3, 2012
    Publication date: April 11, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-seok KIM, Dong-sik SHIM, Yong-seop YOON, Hyung CHOI, Woon-bae KIM
  • MICRO-OPTICAL SWITCHING DEVICE, IMAGE DISPLAY APPARATUS INCLUDING MICRO-OPTICAL SWITCHING DEVICE, AND METHOD OF MANUFACTURING MICRO-OPTICAL SWITCHING DEVICE
    Publication number: 20130070445
    Abstract: A micro-optical switching device, an image display apparatus including the micro-optical switching device, and a method of manufacturing the micro-optical switching device are provided. The micro-optical switching device includes a substrate; a first electrode disposed on the substrate and including a first opening array, wherein the first opening array includes a plurality of openings; and a second electrode disposed spaced apart from the first electrode and including a second opening array including a plurality of openings, wherein the plurality of openings of the second opening array do not overlap with the plurality of openings of the first opening array.
    Type: Application
    Filed: May 1, 2012
    Publication date: March 21, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-sik SHIM, Jong-seok KIM, Yong-seop YOON, Hyung CHOI, Woon-bae KIM