Patents by Inventor Sang Ryul Lee

Sang Ryul 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: 20110147378
    Abstract: A microwave oven includes a cavity having a cooking chamber; a magnetron oscillating microwave radiation used for cooking food in the cooking chamber; and a plurality of radiation openings through which the microwave radiation is radiated into the cooking chamber, each of the radiation openings having a length in a direction where the microwave radiation is guided by a waveguide, the length being greater or less than ?/4.
    Type: Application
    Filed: April 1, 2009
    Publication date: June 23, 2011
    Inventors: Sang-Ryul Lee, Kyu-Young Kim, Jae-Myung Chin, Dong-Han Kim, Si-Young Choi, Sung-Ho Choi
  • Patent number: 7947935
    Abstract: A latch board of a microwave oven is provided. The latch board includes a first lever for controlling on/off operation of a monitor switch. The first lever is formed in an approximate triangular shape and has a hinge formed at a first edge, a pressing part formed at a second edge to come in contact with the monitor switch, and a protrusion part formed at a third edge to come in contact with the latch more rapidly. In the latch board, a difference in operation time of the monitor switch and the circuit switch can be increased such that the operation stability of the microwave oven is improved.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: May 24, 2011
    Assignee: LG Electronics Inc.
    Inventor: Sang Ryul Lee
  • Publication number: 20110049135
    Abstract: A microwave oven is provided. A reinforcing part is provided to a multi-hole part for transferring the heat of a heater to a cooking chamber. This prevents deformation of the multi-hole part due to the heat of the heater.
    Type: Application
    Filed: November 17, 2008
    Publication date: March 3, 2011
    Applicant: LG Electronics Inc.
    Inventors: Sung-Ho Choi, Kyu-Young Kim, Jae-Myung Chin, Sang-Ryul Lee, Dong-Han Kim, Si-Young Choi
  • Publication number: 20110017729
    Abstract: A microwave oven is provided. A component generating relatively high temperature heat and a component generating a relatively low temperature heat are cooled by airflow divided and provided by a cooling part, thereby improving operation reliability and durability of a product.
    Type: Application
    Filed: November 17, 2008
    Publication date: January 27, 2011
    Inventors: Sung-Ho Choi, Kyu-Young Kim, Jae-Myung Chin, Sang-Ryul Lee, Dong-Han Kim, Si-Young Choi
  • FAN
    Publication number: 20110008161
    Abstract: Provided is a fan of a microwave oven. The fan, discharging air in two directions, cools a plurality of components. Thus, the components are cooled with more simple configuration.
    Type: Application
    Filed: November 17, 2008
    Publication date: January 13, 2011
    Applicant: LG ELECTRONICS INC.
    Inventors: Sung-Ho Choi, Kyu-Young Kim, Jae-Myung Chin, Sang-Ryul Lee, Dong-Han Kim, Si-Young Choi
  • Publication number: 20110006056
    Abstract: A microwave oven is provided. A barrier member prevents airflow provided by a fan assembly from being introduced again to the fan assembly. A separation member divides the airflow provided by the fan assembly to cool a first component and a second component. Thus, the components are efficiently cooled.
    Type: Application
    Filed: November 20, 2008
    Publication date: January 13, 2011
    Inventors: Sung-Ho Choi, Kyu-Young Kim, Jae-Myung Chin, Sang-Ryul Lee, Dong-Han Kim, Si-Young Choi
  • Patent number: 7820953
    Abstract: There is provided a microwave oven. In the microwave oven, a screw covering part is protruded toward an inside of a waveguide for an installation of a motor, a convergence preventing part is formed at a portion of a cavity with a shape corresponding to that of the screw covering part and at a location corresponding to that of the screw covering part, and an elevated portion formed by modifying a portion of the cavity in order to uniformly distribute microwave scattered by a stirrer fan. Therefore, the microwave can be distributed more uniformly about the cavity and thereby food can be cooked more evenly and speedily.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: October 26, 2010
    Assignee: LG Electronics Inc.
    Inventor: Sang Ryul Lee
  • Patent number: 7091458
    Abstract: A door assembly for a microwave oven is provided. The door assembly includes a door panel at one side of the door, with a push bar and a latch each projecting toward a body portion of the microwave oven. A latch board including levers each rotatably coupled thereto contact either the latch or the push bar to operate switches which contact the levers. The door assembly provides a simple and convenient assembly structure for a door of a microwave oven.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: August 15, 2006
    Assignee: LG Electronics Inc.
    Inventors: Sang Ryul Lee, Duck Gil Lee
  • Patent number: 6909078
    Abstract: A cooking chamber assembly in a microwave oven for improved which improves air tightness in the cooking chamber, and reduces assembly complexity, time, and cost. A tray which essentially forms a bottom surface of a cooking chamber of the microwave oven is surrounded by a unitary gasket. A groove formed in an inner edge of the unitary gasket is designed to receive an outer edge of the tray, and a lip formed on an outer edge of the unitary gasket is designed to provide an air tight seal with an inner surface of a case of the cooking chamber. An air duct which guides circulating air is attached to an inner portion of the case with a series of hooks, allowing the air duct to be attached without separate fastening members such as screws or bolts, thus further reducing manufacturing time and cost.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: June 21, 2005
    Assignee: LG Electronics Inc.
    Inventors: Sang Ryul Lee, Duck Gil Lee
  • Patent number: 6909079
    Abstract: Microwave oven including an outer case forming a top and sides of a cabinet, a base plate forming a bottom of the cabinet, a front panel and a rear panel mounted in a front part and a rear part of the base plate for forming a front surface and a rear surface respectively, an inner case forming a cooking chamber on the base plate, first and second transformer mounted at corners of one side of the base plate, a fan above the second transformer for drawing external air, a fan motor connected to the fan for providing a driving power to the fan, a fan housing for protecting the fan, an air duct between the first and second transformers, having one end in communication with the fan housing and the other end branched to first and second branch ducts, and first and second magnetron on an outside surface of the inner case, the first and second magnetron connected to the first and second branch ducts respectively, thereby cooling various components of the microwave oven, smoothly.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: June 21, 2005
    Assignee: LG Electronics Inc.
    Inventors: Dong Heon Lee, Sang Ryul Lee, Yang Kyeong Kim, Wan Soo Kim
  • Publication number: 20040182856
    Abstract: Door assembly for a microwave oven including a door panel at one side of the door, having a push bar and a latch both projected from one side toward a body, and a latch board including levers each fitted rotatable at contact with the latch or the push bar, and switches each operable at contact with the lever, thereby providing a simple and convenient assembly structure.
    Type: Application
    Filed: February 18, 2004
    Publication date: September 23, 2004
    Applicant: LG Electronics Inc.
    Inventors: Sang Ryul Lee, Duck Gil Lee
  • Publication number: 20040149749
    Abstract: Cooking chamber assembly in a microwave oven for improved assembly and air tightness. A cooking chamber is formed inside of the case, and a tray is provided inside of the case to form a bottom of the cooking chamber. A unitary gasket has a groove in an inner edge for inserting on an edge of the tray, and a lip on an outer edge in contact with an inside surface of the case for enhancing air tightness. An air duct provided to a ceiling of the cooking chamber for guiding circulating air is attached to an inside of the case directly with hooks without fastening members, such as screws, or bolts.
    Type: Application
    Filed: July 29, 2003
    Publication date: August 5, 2004
    Applicant: LG Electronics Inc.
    Inventors: Sang Ryul Lee, Duck Gil Lee
  • Publication number: 20040094541
    Abstract: Microwave oven including an outer case forming a top and sides of a cabinet, a base plate forming a bottom of the cabinet, a front panel and a rear panel mounted in a front part and a rear part of the base plate for forming a front surface and a rear surface respectively, an inner case forming a cooking chamber on the base plate, first and second transformer mounted at corners of one side of the base plate, a fan above the second transformer for drawing external air, a fan motor connected to the fan for providing a driving power to the fan, a fan housing for protecting the fan, an air duct between the first and second transformers, having one end in communication with the fan housing and the other end branched to first and second branch ducts, and first and second magnetron on an outside surface of the inner case, the first and second magnetron connected to the first and second branch ducts respectively, thereby cooling various components of the microwave oven, smoothly.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 20, 2004
    Applicant: LG Electronics Inc.
    Inventors: Dong Heon Lee, Sang Ryul Lee, Yang Kyeong Kim, Wan Soo Kim
  • Patent number: 5921095
    Abstract: An expandable type refrigerator which is capable of coupling a plurality of refrigerating units or freezing units which each have an independent operational cycles and a predetermined size and is easily expanded at the site of refrigerator installation by coupling a plurality of the refrigerating units or freezing units, wherein each refrigerating unit or freezing unit is capable of controlling one micro-controller by using one power cord. The refrigerator includes more than at least two refrigerating units (or two freezing units) each of which is operable with a different operational cycle and which refrigerating units are coupled to each other at an installation site, a coupling apparatus for coupling the refrigerating units, one external power cord for supplying an electric power to the refrigerating units (or the freezing units), and an operational cycle controller for independently controlling the operational cycles of the refrigerating units (or the freezing units).
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: July 13, 1999
    Assignee: LG Electronics Inc.
    Inventors: Sang Ryul Lee, Sung Ryong Jeong