Patents by Inventor Jong Chun

Jong Chun 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: 20190072903
    Abstract: An electronic device is disclosed including a housing including an outer wall, an inner, and a first through hole formed in the inner space, an audio module located in the inner space, a support structure located in the inner space between the audio module and the first through hole and including a second through hole; and a waterproof structure located in the inner space between the support structure and the outer wall including a flexible gasket. The gasket may include an outer rim, a recess portion moveable between the first through hole and the second through hole, and a connection portion between the rim and the recess portion, including at least one opening around the recess portion, such that the opening and the second through-hole form a sound path between the audio module and the first through-hole in the absence of pressure from an external liquid.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 7, 2019
    Inventors: Sung-Eun PARK, Jong-Chun WEE, Wook-Jin LEE, Jae-Uk AHN
  • Patent number: 10125437
    Abstract: A flame-retardant polyester artificial hair filaments according to the present invention comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant; (B) 5-10 parts by weight of a polymeric phosphorus flame retardant; (D) 0.1-3 parts by weight of a chain extender; and (E) 0.5-3 parts by weight of sodium antimonate.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: November 13, 2018
    Assignee: UNO & COMPANY LTD.
    Inventors: Jong Chun Kim, Sung Min Oh, Chan Young Kim, Sung Hyun Lee
  • Publication number: 20170356103
    Abstract: A flame-retardant polyester artificial hair filaments according to the present invention comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant; (B) 5-10 parts by weight of a polymeric phosphorus flame retardant; (D) 0.1-3 parts by weight of a chain extender; and (E) 0.5-3 parts by weight of sodium antimonate.
    Type: Application
    Filed: June 14, 2016
    Publication date: December 14, 2017
    Applicant: UNO & COMPANY LTD.
    Inventors: JONG CHUN KIM, SUNG MIN OH, CHAN YOUNG KIM, SUNG HYUN LEE
  • Patent number: 9267221
    Abstract: A flame-retardant polyester artificial hair filaments is provided which comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-30 parts by weight of a polymeric phosphorus-based flame retardant; (C) 0.1-3 parts by weight of a chain extender; and (D) 0.5-3 parts by weight of sodium antimonate. The polymeric phosphorus-based flame retardant (B) may be a flame retardant having a repeat unit of formula 1 and a weight-average molecular weight ranging from 80,000 to 150,000. The flame-retardant polyester artificial hair filaments can be prepared by: extruding a composition comprising a mixture of a polyester resin, a polymeric phosphorus-based flame retardant, a chain extender and sodium antimonate to form a pellet; drying the pellet to a water content of 500 ppm or less; melt-spinning the dried pellet to prepare a undrawn yarn; drawing the undrawn yarn at a draw ratio of 2-5; and heat-treating the drawn yarn in a heat treatment device heated to a temperature of 150˜280° C.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 23, 2016
    Assignee: Uno & Company, Ltd.
    Inventors: Jong Chun Kim, Sung Min Oh, Chan Young Kim
  • Publication number: 20150197875
    Abstract: A flame-retardant polyester artificial hair filaments is provided which comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-30 parts by weight of a polymeric phosphorus-based flame retardant; (C) 0.1-3 parts by weight of a chain extender; and (D) 0.5-3 parts by weight of sodium antimonate. The polymeric phosphorus-based flame retardant (B) may be a flame retardant having a repeat unit of formula 1 and a weight-average molecular weight ranging from 80,000 to 150,000. The flame-retardant polyester artificial hair filaments can be prepared by: extruding a composition comprising a mixture of a polyester resin, a polymeric phosphorus-based flame retardant, a chain extender and sodium antimonate to form a pellet; drying the pellet to a water content of 500 ppm or less; melt-spinning the dried pellet to prepare a undrawn yarn; drawing the undrawn yarn at a draw ratio of 2-5; and heat-treating the drawn yarn in a heat treatment device heated to a temperature of 150˜280° C.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 16, 2015
    Inventors: Jong Chun Kim, Sung Min Oh, Chan Young Kim
  • Patent number: 8709909
    Abstract: A method for manufacturing a substrate for a display device comprises forming a first pattern within an active region of the substrate and at the same time forming a first overlay pattern at corner regions of the active region; and forming a second pattern within the active region of the substrate and at the same time forming a second overlay pattern at corner regions of the active region, wherein the first overlay pattern includes gradations arranged in a predetermined direction, and the second overlay pattern includes gradations arranged in the predetermined direction to face the gradations of the first overlay pattern.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 29, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Youn-Oh Kim, Jong-Chun Lim, Jae-Hyun You
  • Publication number: 20120029135
    Abstract: The present invention provides a polyphenylene sulfide synthetic hair filament. The synthetic hair filament comprises (A) a polyphenylene sulfide resin; and (B) an inorganic particle quencher additive, wherein said PPS resin melt index range is 60˜110, wherein said inorganic quencher additive is added at 0.1˜2.0 parts by weight on a 100 parts by weight PPS resin. The synthetic hair filament has a filament size of about 30 to about 80 dtex. The polyphenylene sulfide resin (A) has a p-phenylene sulfide repeating unit above 85% mole. The inorganic particle quencher additive may be of silicon dioxide, talc or the combinations thereof. A suitable inorganic particle quencher additive has an average diameter range of 0.01˜3.0 ?m.
    Type: Application
    Filed: October 7, 2010
    Publication date: February 2, 2012
    Applicant: UNO & COMPANY LTD.
    Inventors: Jong Chun Kim, Hwan Chul Kim, Chan Young Kim, Seung Min Oh
  • Patent number: 8093691
    Abstract: A semiconductor device has a substrate having a plurality of metal traces. At least one electronic component is electrically coupled to a first surface of the substrate. A mold compound is used for encapsulating portions of the electronic component and the first surface of the substrate, wherein a portion of the mold compound is removed around at least one side of the electronic component. A conductive coating is applied to the mold compound and an area where the portion of the mold compound is removed.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: January 10, 2012
    Assignee: Amkor Technology, Inc.
    Inventors: Ruben Fuentes, Christopher Scanlan, Jong Chun
  • Patent number: 6947397
    Abstract: The present invention relates to a method and apparatus for adaptive data transmission enabling data transmission in a variable transmission rate in a communication system, where a number of users share a transmission medium to transmit data in the variable transmission rate, by using a transmission capacity which is not being currently used even if allocated to some users. According to the invention, the transmission rate variation rates of each of the variable transmission rate data transmission services are controlled within the spirit of current variable transmission rate services so that the data traffic of the existing variable transmission rate transmission services which is actually unable to be forecasted can be forecasted. Therefore, the idle transmission capacity available can be forecasted so that the data can be transmitted by using the idle capacity. In this way, the transmission capacity of the system can be more efficiently used.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 20, 2005
    Assignee: Korea Telecommunication Authority
    Inventors: Yun Sik Kim, Wan Jong Chun
  • Patent number: 6895659
    Abstract: A manufacturing process in which a plurality of fluid jetting apparatuses are formed includes forming and sequentially adhering a heat driving part, a membrane and a nozzle part, respectively. The fluid jetting apparatuses are completed as a wafer unit by forming the nozzle part by forming a nozzle plate on a substrate of a wafer by a spinning process; forming jetting fluid barriers on the nozzle plate by the spinning process; forming jetting fluid chambers in the jetting fluid barriers; forming nozzles in the nozzle plate; and separating the substrate from the nozzle plate after the nozzle part and the membrane are adhered to each other. The forming jetting fluid chambers is accomplished by a process of wet etching, and the forming nozzles is accomplished by a treating apparatus of a laser beam or by a process of reactive ion etching.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: May 24, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-ho Moon, Jong-chun Kim, Sung-hee Lee
  • Publication number: 20020080727
    Abstract: The present invention relates to a method and apparatus for adaptive data transmission enabling data transmission in a variable transmission rate in a communication system, where a number of users share a transmission medium to transmit data in the variable transmission rate, by using a transmission capacity which is not being currently used even if allocated to some users. According to the invention, the transmission rate variation rates of each of the variable transmission rate data transmission services are controlled within the spirit of current variable transmission rate services so that the data traffic of the existing variable transmission rate transmission services which is actually unable to be forecasted can be forecasted. Therefore, the idle transmission capacity available can be forecasted so that the data can be transmitted by using the idle capacity. In this way, the transmission capacity of the system can be more efficiently used.
    Type: Application
    Filed: December 21, 2000
    Publication date: June 27, 2002
    Inventors: Yun Sik Kim, Wan Jong Chun
  • Publication number: 20020080212
    Abstract: A manufacturing process of a plurality of fluid jetting apparatuses in a print head adapted to an output unit. The process forms a heat driving part, a membrane and a nozzle part, respectively, and then adheres them sequentially. The fluid jetting apparatuses are completed as a wafer unit by forming the nozzle part using a spinning process. The manufacturing process of the nozzle part includes a first step of forming a nozzle plate on a substrate of a wafer by the spinning process; a second step of forming jetting fluid barriers on the nozzle plate by the spinning process; a third step of forming jetting fluid chambers in the jetting fluid barriers; a fourth step of forming nozzles in the nozzle plate; and a fifth step of separating the substrate from the nozzle plate. The fifth step is accomplished after the nozzle part and the membrane are adhered to each other.
    Type: Application
    Filed: October 25, 1999
    Publication date: June 27, 2002
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-ho MOON , Jong-Chun KIM , Sung-hee Lee
  • Publication number: 20020028681
    Abstract: Disclosed are methods for collecting information and providing an information service based on locational and geographical information as well as to a recording medium containing a program readable by a computer for realizing the methods thereof. The methods according to the invention include the steps of: receiving information on a subscriber collected according to a request for a service provision including information on a current location and a version of a currently designated map leaf and according to a predetermined condition; confirming whether or not the version of the current map is an updated version by using the received locational information and information on boundaries of each map leaf established in a geographical information database; and transmitting information on a request for a service provision depending on whether or not the version of the map leaf is an updated one.
    Type: Application
    Filed: December 15, 2000
    Publication date: March 7, 2002
    Inventors: Soong-Bok Lee, Yun-Sik Kim, Wan-Jong Chun
  • Patent number: 5568294
    Abstract: A liquid crystal display comprises a pair of substrates, transparent electrodes respectively formed thereon and a liquid crystal material layer inserted between the electrodes, and is characterized in that a liquid crystalline polymer orientation layer is formed on at least one of the liquid crystal material layers, and the liquid crystalline polymer orientation layer functions as an optical phase retardation film. The phase retardation of the light transmitting liquid crystal layer is compensated by the liquid crystalline polymer orientation layer, which enhances contrast. The liquid crystalline polymer layer can also be used as an optical phase retardation film.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: October 22, 1996
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Jong-chun Lee
  • Patent number: 5398570
    Abstract: A supplementary device for vehicle pedal comprising an upper pedal piece having an open hole and a screw hole, a lower supporter having a slot on one end and a screw hole on the other end, and a locking plate located at the bottom of the lower supporter. Each end of the upper pedal piece and the locking plate are screwed, the slot of the lower supporter is inserted between the assembly, and the assembly is tightly screwed by bolts.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: March 21, 1995
    Inventor: Jong-Chun Chae
  • Patent number: 5227648
    Abstract: A photodiode array composed of sharply tuned at consecutively different wavelengths are disclosed with the vertical resonance cavity. Semiconductor superlattice distributed Bragg reflectors can be used as the resonance cavity to achieve sharp tuning and monolithic integration, and the wedged distributed Bragg reflector configuration resonance cavity provides a sequential wavelength detection range. A linear array having resolution a fraction of the photodiodes bandwidth and a square-matrix array with a wedged etalon for high resolution, are disclosed. The disclosed photodiode array make a pocket-type wavelength meter feasible and can be used as a substitute for a spectrometer.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: July 13, 1993
    Inventor: Jong-Chun Woo