Patents by Inventor Chang-Jun Lee

Chang-Jun Lee 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: 20150207093
    Abstract: An organic light-emitting device includes a positive electrode, a negative electrode and at least one organic material layer between the positive electrode and the negative electrode. The at least one organic material layer includes a hole-injecting layer, a hole-transporting layer, an emission layer, an electron-transporting layer, and an electron-injecting layer, and the emission layer includes a host material and a dopant material. In addition, a lifetime enhancement layer including a bipolar compound is positioned between the emission layer and the electron-transporting layer.
    Type: Application
    Filed: October 31, 2014
    Publication date: July 23, 2015
    Inventors: Seul-Ong Kim, Mi-Kyung Kim, Dong-Woo Shin, Chang-Woong Chu, Tae Hyung Kim, HoCheol Park, Youngmi Baek, Min-Sik Eum, Eunjung Lee, Chang Jun Lee
  • Publication number: 20150192252
    Abstract: The present invention relates to an extracting device supplying fixed quantity of exhaust gas for industrial facility, and more particularly, to an extracting device supplying fixed quantity of exhaust gas for industrial facility which supplies a certain amount of exhaust gas by installing a gas supply pipe, in which two blowers are arranged in a line, at a stack and operating each blower in accordance with a predetermined input value.
    Type: Application
    Filed: July 16, 2014
    Publication date: July 9, 2015
    Inventors: Won-Seok CHANG, Chang-Jun LEE, Jin-Bae KIM, Nam-Woong KIM
  • Publication number: 20150171344
    Abstract: Disclosed is a novel benzimidazole compound having excellent hole injection and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which comprises the benzimidazole compound in one or more organic material layers thereof so as to thereby achieve enhanced characteristics, such as light-emitting efficiency, driving voltage, and lifespan.
    Type: Application
    Filed: March 6, 2013
    Publication date: June 18, 2015
    Applicant: DOOSAN CORPORATION
    Inventors: Hyung Chan Bae, Young Mi Beak, Tae Hyung Kim, Ho Cheol Park, Chang Jun Lee, Jin Young Shin
  • Publication number: 20140374724
    Abstract: The present invention relates to a novel indole-based compound having superior hole injection and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which comprises the indole-based compound in one or more organic layers thereof so as to thereby achieve improved characteristics, such as light-emitting efficiency, driving voltage, and lifespan characteristics.
    Type: Application
    Filed: December 7, 2012
    Publication date: December 25, 2014
    Applicant: DOOSAN CORPORATION
    Inventors: Hoe Moon Kim, Sung Moo Kim, Young Bae Kim, Tae Hyung Kim, Ho Cheol Park, Chang Jun Lee, Young Mi Baek, Jin Yong Shin
  • Patent number: 8900437
    Abstract: Disclosed is an apparatus and method for forming an oxidation layer on a manifold block for a fuel cell stack, which forms an oxidation layer uniformly over the entire surface of a long and complicated internal flow field of a manifold block. In particular, the apparatus for forming an oxidation layer on a manifold block for a fuel cell stack includes: an electrolyte bath which contains an electrolyte required for the formation of the oxidation layer, an electrode for supplying a required electron flow for the formation of the oxidation layer from a power supply to the manifold block immersed in the electrolyte of the electrolyte bath and to the electrolyte, and an air supply for supplying oxygen to the electrolyte. Even more particularly, the electrode connected to the electrolyte is inserted into each internal flow field of the manifold block to provide an effective electron flow therein.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 2, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Wooshin Industrial Co., Ltd.
    Inventors: Duck Whan Kim, Young Bum Kum, Sae Hoon Kim, Jung Han Yu, Chang Jun Lee, Young Hwan Ko
  • Publication number: 20140158281
    Abstract: A method for manufacturing a manifold for a fuel cell with a multilayer structure by injection-molding individual manifolds, each having welding projections and welding guides, and bonding the injection-molded individual manifolds by vibration welding includes arranging welding projections of an upper individual manifold and welding guides of a lower individual manifold to be engaged with each other while maintaining a uniform gap between each other to bond a plurality of individual manifolds in an up and down stacking structure, pressing the lower individual manifold upward, and applying vibration to the upper individual manifold in the left and right direction, thus bonding the upper and lower individual manifolds. Among the welding projections of the upper individual manifold, a non-horizontal welding projection whose longitudinal direction does not coincide with the vibration direction of the individual manifold has a variable height.
    Type: Application
    Filed: May 1, 2013
    Publication date: June 12, 2014
    Applicants: HYUNDAI MOTOR COMPANY, WOOSHIN INDUSTRIAL CO., LTD., KIA MOTORS CORPORATION
    Inventors: Duck Whan KIM, Sae Hoon KIM, Young Bum KUM, Young Tae KIM, Chang Jun LEE
  • Patent number: 8512877
    Abstract: Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: August 20, 2013
    Assignee: Dongwoo Fine-Chem
    Inventors: Kyong Min Kang, Deug Sang Lee, Chang Jun Lee, Kyoung Moon Go, Jong Soon Lee, Se Hoon Kim
  • Publication number: 20130020205
    Abstract: Disclosed is an apparatus and method for forming an oxidation layer on a manifold block for a fuel cell stack, which forms an oxidation layer uniformly over the entire surface of a long and complicated internal flow field of a manifold block. In particular, the apparatus for forming an oxidation layer on a manifold block for a fuel cell stack includes: an electrolyte bath which contains an electrolyte required for the formation of the oxidation layer, an electrode for supplying a required electron flow for the formation of the oxidation layer from a power supply to the manifold block immersed in the electrolyte of the electrolyte bath and to the electrolyte, and an air supply for supplying oxygen to the electrolyte. Even more particularly, the electrode connected to the electrolyte is inserted into each internal flow field of the manifold block to provide an effective electron flow therein.
    Type: Application
    Filed: November 22, 2011
    Publication date: January 24, 2013
    Applicants: HYUNDAI MOTOR COMPANY, WOOSHIN INDUSTRIAL CO., LTD., KIA MOTORS CORPORATION
    Inventors: Duck Whan Kim, Young Bum Kum, Sae Hoon Kim, Jung Han Yu, Chang Jun Lee, Young Hwan Ko
  • Publication number: 20100156283
    Abstract: Naphthylcarbazole derivatives are provided. The naphthylcarbazole derivatives are represented by Formula 1. Further provided are KL host materials, organic electroluminescent devices employing the host materials, and displays and lighting systems comprising the devices.
    Type: Application
    Filed: March 27, 2008
    Publication date: June 24, 2010
    Applicant: DONGWOO FINE-CHEM
    Inventors: Kyong Min Kang, Deug Sang Lee, Chang Jun Lee, Kyoung Moon Go, Jong Soon Lee, Se Hoon Kim
  • Patent number: 6772046
    Abstract: A method for monitoring an operational failure of a stocker for use in a semiconductor factory automation system, wherein the stocker is divided into a plurality of operational parts, includes the steps of: a) generating stocker state information representing an operational state of the stocker in response to a stocker state signal issued from the stocker; b) inspecting the stocker state information to update the operational state of the stocker previously stored; c) generating a warning signal when at least one part contained in the stocker has failed; and d) generating an audiovisual warning sign in response to the warning signal. The method can effectively provide audiovisual warning signs when the stocker has failed.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: August 3, 2004
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Chang-Jun Lee, Kyoung-Jin Seo
  • Patent number: 5227867
    Abstract: An apparatus for line-alternating interpolation of chroma signals in a MUSE decoder for a high definition (HD) television can simultaneously transmit color difference signals such that a color difference signal of an untransmitted scanning line is restored using the color difference signal of a neighboring scanning line of a currently transmitting scanning line. In the apparatus, the color difference signals alternately inputting every scanning line through an input terminal, are delayed for periods of one horizontal line, so that the two signals which are most similar to the presently transmitting color difference signal among the delayed color difference signals are added together, and the two signals which are most dissimilar to the original signal are also added together.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: July 13, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chang-jun Lee
  • Patent number: 5194937
    Abstract: A television signal converting system which converts a television signal having a different broadcasting method to be displayed on another type television receiver by performing a signal converting process. The system performs a scanning line conversion for an arbitrary television signal to separate at least two luminance and color difference signals having different scanning line numbers corresponding to at least two picture screen modes. The system selects the luminance and color difference signals according to the screen mode among the separated at least two luminance and chrominance signals and then samples the selected luminance and color difference signals by the scanning line number corresponding to the picture screen mode.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 16, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-jun Lee, Seok-yun Jeong