Patents by Inventor Joon-Hwan Oh

Joon-Hwan Oh 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: 20090235682
    Abstract: An icemaker and a refrigerator having an icemaker are discussed. The icemaker has pulse-electrothermal ice release and includes an ice-making tray having several ice forming portions in which water is stored and ice is formed; and a housing surrounding the ice-making tray provided with at least one cold air inlet and/or ice ejection port through which cold air is supplied and ice released along a bent channel. The cold air inlet and/or ice ejection ports are baffled to prevent contact with a user's fingers and thereby reduce the possibility of electric shock.
    Type: Application
    Filed: December 19, 2008
    Publication date: September 24, 2009
    Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Victor F. PETRENKO, Gabriel MARTINEZ, Tae Hee LEE, Hong Hee PARK, Joon Hwan OH, Kwang Ha SUH
  • Publication number: 20090235681
    Abstract: The present document relates to an icemaker having a pulse electrothermal ice release system for separating ice bodies from an ice mold. The pulse electrothermal ice release system operates by applying an electric current through the ice mold through two wires. Safety apparatus for preventing electric shock to users of the icemaker is described. A refrigerator having the icemaker, and an operating method of the icemaker are disclosed. In an embodiment, the safety apparatus interrupts current flow through both wires.
    Type: Application
    Filed: December 19, 2008
    Publication date: September 24, 2009
    Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Victor F. PETRENKO, Gabriel MARTINEZ, Michiya HIGA, Valeri KOZLYUK, Tae Hee LEE, Hong Hee PARK, Joon Hwan OH, Kwang Ha SUH
  • Publication number: 20090223230
    Abstract: Provided is a method of controlling an ice making assembly for a refrigerator. According to the method, transparent ice can be made in an ice making space which is kept at a temperature lower than 0° C.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 10, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Ho Youn Lee, Joon Hwan Oh
  • Publication number: 20090217678
    Abstract: An ice-making device for a refrigerator, which is designed to separate ice through a simple process is provided. The ice-making device for a refrigerator includes an ice tray defining an ice-making space, an ice core member that is partly received in the ice-making space to make ice at an end thereof, a driving unit moving and rotating at least one of the ice tray and the ice core member, and a power transmission unit for transferring power from the driving unit to the ice core member. The ice on the ice core member starts being separated in a state where the ice is spaced apart from an outer surface of the ice tray.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 3, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Ho Youn Lee, Joon Hwan Oh
  • Publication number: 20090217692
    Abstract: An ice-making device designed to make and separate ice from an ice tray through a simple process is provided. The ice-making device includes an ice tray defining an ice-making space, a freezing core that is partly received in the ice-making space to make ice at an end thereof, a driving unit moving and rotating the freezing core, and a power transmission unit for transferring power from the driving unit to the freezing core. The power transmission unit including a cam unit rotatably connected to the driving unit and a moving member that moves in vertical and rotational direction by a driving force of a motor transferred by the cam unit.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 3, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Yo Youn Lee, Joon Hwan Oh
  • Publication number: 20090211270
    Abstract: An ice making assembly for a refrigerator and a method for controlling the ice making assembly. The ice making assembly and the method of controlling the ice making assembly producing transparent ice and capable of preventing water overflow, the freezing of water that has overflowed, and the spilling out of water that has overflowed.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 27, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Ho Youn Lee, Joon Hwan Oh
  • Publication number: 20090211267
    Abstract: An ice making assembly for a refrigerator and a method for controlling the ice making assembly are provided. The ice making assembly and the method of controlling the ice making assembly provides a constant amount of water supply for each ice making cycle regardless of environmental conditions such as the varying water supply pressure of different installation locations. Furthermore, overflowing can be prevented during water supply with the use of a capacitance water level sensor.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 27, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Ho Youn Lee, Joon Hwan Oh
  • Publication number: 20090211266
    Abstract: Controlling an ice making assembly for a refrigerator such that the ice making assembly produces transparent ice. Transparent ice can be produced even if the space containing the ice making assembly is kept at a temperature lower than 0° C. This is achieved, in part, by maintaining the ice tray at a temperature at or above freezing.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Inventors: Young Jin Kim, Tae Hee Lee, Hong Hee Park, Ho Youn Lee, Joon Hwan Oh
  • Patent number: 7546745
    Abstract: A display device guiding apparatus includes a receiving portion in which a display device can be received and a guide unit provided between the display device and the receiving portion. The guide unit includes a hinge assembly for pivoting the display at a predetermined angle, an arm assembly having first and second ends respectively connected to the hinge assembly and the receiving portion, and a pivot control unit providing a pivotal force of the arm assembly with respect to the receiving portion.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: June 16, 2009
    Assignee: LG Electronics Inc.
    Inventors: Youn Seok Lee, Yang Gyu Kim, Joon Hwan Oh
  • Publication number: 20090049858
    Abstract: An ice maker and a refrigerator having the same include an ice making container which is maintained at a temperature higher than a freezing point of water. Ace core rods having the temperature lower than the freezing point are inserted into the ice making container to cause water in the container to freeze. Accordingly, water at the periphery of the ice making container remains liquid which the water surrounding the ice core rods freezes. As a result, air bubbles generated when the ice is made can be discharged from the liquid portions of the water at the outer edges of the container. This results in ice without trapped air bubbles, which allows excellent transparent ice pieces to be formed. In some embodiments, the exterior surfaces of the ice making container are maintained at a temperature lower than the freezing point of water, and thawing rods maintained at the temperature higher than the freezing point of water are inserted into the center portions of the ice making container.
    Type: Application
    Filed: April 4, 2008
    Publication date: February 26, 2009
    Inventors: Tae-Hee Lee, Hong-Hee Park, Joon-Hwan Oh, Young-Jin Kim, Kwang-Ha Suh, Jin-Sung Park
  • Publication number: 20090019866
    Abstract: A method of controlling an ice maker is provided that minimizes generation of excess water and reduces energy consumption. The method allows for uniform heat to be generated and distributed throughout the ice tray during an ice separation process. Consequently, the ice separating process may be consistently performed irrespective of the shape of the ice tray and its surroundings, thereby minimizing generation of excess water, and reducing energy consumption.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 22, 2009
    Inventors: Tae Hee Lee, Hong Hee Park, Joon Hwan Oh, Young Jin Kim, Kwang Ha Suh
  • Publication number: 20090020681
    Abstract: An ice tray is provided that prevents the overflow or splashing of water or thin ice out of the ice tray as water is supplied to the ice tray, or when the ice tray is shaken by an external force. The ice tray may include a plurality of receiving portions that receive water for freezing into ice pieces. An overflow preventing portion may extend upward from upper edges of the receiving portions to form a barrier to water flowing out of the ice tray. Alternatively, the receiving parts may be positioned within a corresponding plurality of location parts having water proofing walls extending upward therefrom to inhibit the unintentional flow of water or thin ice out of the receiving portions of the ice tray.
    Type: Application
    Filed: June 19, 2008
    Publication date: January 22, 2009
    Inventors: Tae Hee LEE, Hong Hee Park, Joon Hwan Oh, Young Jin Kim, Kwang Ha Suh
  • Patent number: 7155926
    Abstract: A refrigerator includes: a refrigerator body having a cooling chamber for storing food items and a mechanic chamber provided at one side thereof; a heat exchanger disposed in the mechanic chamber and performing heat exchanging while a refrigerant passes therethrough; a cross flow fan disposed facing the heat exchanger and blowing air for heat exchange; and a compressor mounted inside the mechanic chamber and compressing a refrigerant. A space for the mechanic chamber can be reduced, and thus, a cooling chamber for keeping food items can be enlarged.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: January 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Su-Nam Chae, Moo-Youl Kim, Joon-Hwan Oh, Tae-Hee Lee, Kyeong-Yun Kim, Jang-Seok Lee, Sung Jhee, Nam Soo Cho
  • Publication number: 20050160760
    Abstract: A refrigerator includes: a refrigerator body having a cooling chamber for storing food items and a mechanic chamber provided at one side thereof; a heat exchanger disposed in the mechanic chamber and performing heat exchanging while a refrigerant passes therethrough; a cross flow fan disposed facing the heat exchanger and blowing air for heat exchange; and a compressor mounted inside the mechanic chamber and compressing a refrigerant. A space for the mechanic chamber can be reduced, and thus, a cooling chamber for keeping food items can be enlarged.
    Type: Application
    Filed: December 3, 2004
    Publication date: July 28, 2005
    Applicant: LG ELECTRONICS INC.
    Inventors: Su-Nam Chae, Moo-Youl Kim, Joon-Hwan Oh, Tae-Hee Lee, Kyeong-Yun Kim, Jang-Seok Lee, Sung Jhee, Nam Cho
  • Patent number: 6188244
    Abstract: An hysteresis input buffer includes a first CMOS inverter generating a node signal, a second CMOS inverter coupled to the first CMOS inverter, inverting the node signal from the first CMOS inverter, and producing an intermediate signal, and a hysteresis control circuit coupled to the second CMOS inverter, receiving the intermediate signal, and producing an output signal having a low level during a predetermined delay time and a high level after the predetermined delay time has elapsed.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: February 13, 2001
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Yang-Sung Joo, Joon-Hwan Oh