Patents by Inventor Yun-Kyu An

Yun-Kyu 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: 8583013
    Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: November 12, 2013
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Ji-won Moon, Hyun-cheol Lee, Yun-kyu Sim
  • Publication number: 20130279225
    Abstract: Provided is an apparatus for controlling an inverter current, and more particularly, to a current controlling apparatus for controlling current of a switching element of an inverter that outputs a 3-phase alternating current. The apparatus for controlling an inverter current includes: an inverter comprising a plurality of current detection switching elements capable of detecting switched and output current, converting a direct current voltage into a 3-phase alternating current by turning the plurality of current detection switching elements on and off; an AD converter for directly receiving an input of an output current of an output terminal of each of the plurality of current detection switching elements as a detection current and converting the detection current into a detection signal value in digital form; and a control unit for controlling on and off of the plurality of current detection switching elements by using the detection signal value.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 24, 2013
    Inventors: Yun Kyu Choi, Hye Seong Heo
  • Patent number: 8329191
    Abstract: The present invention relates to three-branched PEG-G-CSF conjugate of general formula (1) in which the bonding ratio of three-branched polyethylene glycol (PEG) and G-CSF is 1:1 (mol/mol), wherein PEG has an average molecular weight of from 200 to 45,000 daltons; a pharmaceutical composition comprising the same, and a preparing method thereof.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: December 11, 2012
    Assignee: Dong-A-Pharm. Co., Ltd.
    Inventors: Yeong-Woo Jo, Won-Young Yoo, Hyun-Kyu Jeon, Yun-Kyu Choi, Hye-In Jang, Byong-Moon Kim, Sung-Hee Lee, Soo-Hyung Kang, Moo-Hi Yoo
  • Patent number: 8310730
    Abstract: Provided are a fax data transmission controller, a fax server, a fax system, and a method of providing the fax system. The fax data transmission controller can store fax data received via a public switched telephone network (PSTN), and transmit the stored fax data to a fax server, to a facsimile, or to a user computer. The fax server can filter fax data that is received or to be transmitted, and perform authentication on the content of the fax data.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: November 13, 2012
    Inventor: Yun Kyu Lee
  • Patent number: 8304494
    Abstract: A polycarbonate resin composition of the present invention comprises about 40 to about 99% by weight of a polycarbonate resin (A), about 1 to about 60% by weight of an acrylic copolymer (B) having a high refractive index and a flexible structure, and about 0 to about 60% by weight of acrylic resin (C). A polycarbonate resin composition of the present invention can have excellent transparency and scratch resistance without requiring extra compatibilizers by including an acrylic copolymer having a high refractive index and a flexible structure with the polycarbonate resin.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: November 6, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Sang Ki Park, Kee Hae Kown, Jin Hwa Chung, Jin Hwan Choi, Yun Kyu Lee
  • Publication number: 20120264871
    Abstract: A silicone-based impact modifier including a core-shell graft copolymer is disclosed. The silicone-based impact modifier includes a core made of a silicone-based rubber and alkyl acrylate and a shell made from an inorganic acrylate compound. Also disclosed is a thermoplastic resin composition including the silicone-based impact modifier.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 18, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hyung Rang Moon, Ju Sung Kim, Yun Kyu Lee, Yu Ho Kim, Il Jin Kim, Kee Hae Kwon, Han Su Lee, Mi Sun Kim, Ki Bo Chang
  • Publication number: 20120216851
    Abstract: The present invention relates to a solar power generation apparatus, which comprises: torque tubes which are arranged to form a plurality of columns; a plurality of solar panels which are installed along each torque tube; posts which rotatably support each torque tube; lever arms which are coupled with each torque tube; a linkage which is disposed on the lower side of the torque tubes and is connected to each lever arm; an actuator which reciprocates the linkage in the longitudinal direction of the linkage, thereby rotating the torque tubes around an axis based on the longitudinal direction of the torque tubes; and a bed frame which is installed between some of the plurality of posts, wherein the actuator is supported thereon.
    Type: Application
    Filed: June 19, 2009
    Publication date: August 30, 2012
    Applicant: SUNEDISON
    Inventor: Yun-Kyu Jang
  • Publication number: 20120219243
    Abstract: The present invention relates to a synthetic resin bearing for a photovoltaic tracking system including first and second bearing members coupled with each other for forming a bearing assembly, wherein each of the first and second bearing members comprises a pair of side plate members facing each other; a friction member positioned between outer peripheral portions of the pair of side plates and having an arc-shaped section; and a reinforcement member for connecting the pair of side plates and the friction member, and the first and second bearing members have a coupling protrusion and a concave portion for receiving the coupling protrusion at the coupling surfaces thereof.
    Type: Application
    Filed: June 18, 2009
    Publication date: August 30, 2012
    Applicant: SUNEDISON
    Inventor: Yun-Kyu Jang
  • Publication number: 20120177400
    Abstract: An image forming apparatus includes a photoconductor unit, a developing unit to feed a developer to a photoconductor of the photoconductor unit, the developing unit being provided rotatable relative to the photoconductor unit, and a link unit to allow a charging roller of the photoconductor unit to come into contact with or be separated from a photoconductor while in linkage with rotation of the developing unit.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 12, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho Jin JANG, Joo Hwan Noh, Yun Kyu Sim, Sung Han Kim, Ji Won Moon
  • Publication number: 20120172554
    Abstract: Acrylic fine particles formed by polymerization of a (meth)acrylate containing monomer with a cross-linking agent are disclosed. The cross-linking agent includes a first cross-linking agent having at least three (meth)acryloyloxy groups and at least one functional group —OH, —COOH, or a combination thereof, and the acrylic fine particles can have a coefficient of variation (C.V.) of about 20 to about 60%. The acrylic fine particles can have high heat resistance and solvent resistance and also enhanced compatibility with a binder and a solvent. Accordingly, the acrylic fine particles can exhibit remarkably increased dispersibility when used in a diffusing film or the like, and thus are suitable for use as a diffusing agent.
    Type: Application
    Filed: December 16, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ju Sung KIM, Kee Hae KWON, Hyun Yoo KIM, Yeon Hee SON, In Hwan OH, Yun Kyu LEE
  • Patent number: 8204188
    Abstract: A facsimile controlling device for facsimile security can receive or block a fax transmitted from a registered fax number. In addition, the facsimile controlling device for facsimile security may allow a transmission document to undergo authentication before being transmitted to the outside or may block the transmission document from being transmitted to a registered number.
    Type: Grant
    Filed: June 9, 2007
    Date of Patent: June 19, 2012
    Inventor: Yun kyu Lee
  • Patent number: 8189238
    Abstract: A method and system for managing facsimile (fax) data in an integrated manner. The system includes an integrated fax server, and a fax terminal configured to transmit and receive fax data via a first communication network and to transmit both the transmitted and received fax data to the integrated fax server via a second communication network. The integrated fax server stores fax data received from the fax terminal in a database. The fax terminal includes a fax machine connector configured to receive fax data from a fax machine, a first communication network connector configured to transmit and receive fax data via a first communication network, and a server interface unit configured to transmit fax data to the integrated fax server. Accordingly, the integrated fax server manages transmitted and received fax documents with increased efficiency and security. Thus, the difficulty of managing fax documents due to spacial restriction is diminished.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: May 29, 2012
    Inventor: Yun Kyu Lee
  • Publication number: 20120051799
    Abstract: A developing unit includes a toner storage portion for containing toner and a development portion for containing the toner supplied from the toner storage portion. The development portion includes a developing roller for supplying the toner to a photosensitive body, a supply roller and an auxiliary supply roller. The supply roller and the auxiliary supply roller rotate while facing each other to supply the toner to the developing roller. In the developing unit, an inequality that |D?(R1+R2)|?1.0 mm is satisfied, where a distance between the centers of the auxiliary supply roller and the supply roller in a region where the auxiliary supply roller and the supply roller face each other is D, a radius of the supply roller is R1, and a radius of the auxiliary supply roller is R2.
    Type: Application
    Filed: March 30, 2011
    Publication date: March 1, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-hong KIM, Joo-hwan NOH, Young-su LEE, Yun-kyu SIM
  • Publication number: 20120045253
    Abstract: A developing unit includes a toner storage portion containing toner and including a toner supply member, a development portion disposed above the toner storage portion and containing the toner supplied from the toner storage portion by the toner supply member, and including a developing roller and a supply roller to supply the toner to the developing roller, and a partition wall to divide the toner storage portion and the development portion, and including an opening portion disposed under the lowest portion of the supply roller and forming a path of the toner supplied from the toner storage portion to the development portion.
    Type: Application
    Filed: October 21, 2010
    Publication date: February 23, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-hong Kim, Joo-hwan Noh, Young-su Lee, Yun-kyu Sim
  • Publication number: 20120039636
    Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.
    Type: Application
    Filed: October 17, 2011
    Publication date: February 16, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ji-won Moon, Hyun-cheol Lee, Yun-kyu Sim
  • Patent number: 8073366
    Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: December 6, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-won Moon, Hyun-cheol Lee, Yun-kyu Sim
  • Publication number: 20110076064
    Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.
    Type: Application
    Filed: December 9, 2010
    Publication date: March 31, 2011
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Ji-won MOON, Hyun-cheol Lee, Yun-kyu Sim
  • Patent number: 7873305
    Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: January 18, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ji-won Moon, Hyun-cheol Lee, Yun-kyu Sim
  • Publication number: 20100168272
    Abstract: A polycarbonate resin composition of the present invention comprises about 40 to about 99% by weight of a polycarbonate resin (A), about 1 to about 60% by weight of an acrylic copolymer (B) having a high refractive index and a flexible structure, and about 0 to about 60% by weight of acrylic resin (C). A polycarbonate resin composition of the present invention can have excellent transparency and scratch resistance without requiring extra compatibilizers by including an acrylic copolymer having a high refractive index and a flexible structure with the polycarbonate resin.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 1, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sang Ki PARK, Kee Hae KOWN, Jin Hwa CHUNG, Jin Hwan CHOI, Yun Kyu LEE
  • Patent number: D693399
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-Kyu Sim, Joong-Gwang Shin, Se-Il Kwon, Jin-Hyung Lee