Patents by Inventor Kwang-Cheol Lee

Kwang-Cheol 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: 20080006888
    Abstract: Disclosed herein is a method of fabricating nano-components using nanoplates, including the steps of: printing a grid on a substrate using photolithography and Electron Beam Lithography; spraying an aqueous solution dispersed with nanoplates onto the grid portion to position the nanoplates on the substrate; depositing a protective film of a predetermined thickness on the substrate and the nanoplates positioned on the substrate; ion-etching the nanoplates deposited with the protective film by using a Focused Ion Beam (FIB) or Electron Beam Lithography; and eliminating the protective film remaining on the substrate using a protective film remover after the ion-etching of the nanoplates, and a method of manufacturing nanomachines or nanostructures by transporting such nano-components using a nano probe and assembling with other nano-components.
    Type: Application
    Filed: October 31, 2005
    Publication date: January 10, 2008
    Applicant: Korea Research Institute of Standards and Science
    Inventors: Yong Yun, Chil Ah, Dong Ha, Hyung Park, Wan Yun, Kwang-Cheol Lee, Gwang Park
  • Patent number: 6978426
    Abstract: A low-error fixed-width multiplier receives a W-bit input and produces a W-bit product. In an embodiment, a multiplier (Y) is encoded using modified Booth coding. The encoded multiplier (Y) and a multiplicand (X) are processed together to generate partial products. The partial products are accumulated to generate a product (P). To compensate for the quantization error, Booth encoder outputs are used for the generation of error compensation bias. The truncated bits are divided into two groups, a major least significant bit group and a minor least significant bit group, depending upon their effects on the quantization error. Different error compensation methods are applied to each group.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: December 20, 2005
    Assignee: Broadcom Corporation
    Inventors: Keshab K. Parhi, Jin-Gyun Chung, Kwang-Cheol Lee, Kyung-Ju Cho
  • Publication number: 20050144217
    Abstract: A low-error fixed-width multiplier receives a W-bit input and produces a W-bit product. In an embodiment, a multiplier (Y) is encoded using modified Booth coding. The encoded multiplier (Y) and a multiplicand (X) are processed together to generate partial products. The partial products are accumulated to generate a product (P). To compensate for the quantization error, Booth encoder outputs are used for the generation of error compensation bias. The truncated bits are divided into two groups, a major least significant bit group and a minor least significant bit group, depending upon their effects on the quantization error. Different error compensation methods are applied to each group.
    Type: Application
    Filed: February 22, 2005
    Publication date: June 30, 2005
    Applicant: Broadcom Corporation
    Inventors: Keshab Parhi, Jin-Gyun Chung, Kwang-Cheol Lee, Kyung-Ju Cho
  • Publication number: 20030196177
    Abstract: A low-error fixed-width multiplier receives a W-bit input and produces a W-bit product. In an embodiment, a multiplier (Y) is encoded using modified Booth coding. The encoded multiplier (Y) and a multiplicand (X) are processed together to generate partial products. The partial products are accumulated to generate a product (P). To compensate for the quantization error, Booth encoder outputs are used for the generation of error compensation bias. The truncated bits are divided into two groups, a major least significant bit group and a minor least significant bit group, depending upon their effects on the quantization error. Different error compensation methods are applied to each group.
    Type: Application
    Filed: August 30, 2002
    Publication date: October 16, 2003
    Applicant: Broadcom Corporation
    Inventors: Keshab K. Parhi, Jin-Gyun Chung, Kwang-Cheol Lee, Kyung-Ju Cho
  • Patent number: 6593067
    Abstract: A method for manufacturing a microstructure by using an X-ray includes the steps of selectively exposing a portion of a photosensitive material to the high energy light source, the selectively exposing step being carried out by using a photomask for defining a pattern of the microstructure and performing a heat-treatment for melting and deforming only an upper portion of the exposed portion of the photosensitive material, the upper portion of the exposed portion of the photosensitive material being exposed at an energy level between about 1 kJ/cm3 and about 20 kJ/cm3, when being exposed to the X-ray.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: July 15, 2003
    Assignee: Postech Foundation
    Inventors: Seung Seob Lee, Sung-Keun Lee, Kwang-Cheol Lee
  • Publication number: 20030012332
    Abstract: A method for manufacturing a microstructure by using an X-ray includes the steps of selectively exposing a portion of a photosensitive material to the high energy light source, the selectively exposing step being carried out by using a photomask for defining a pattern of the microstructure and performing a heat-treatment for melting and deforming only an upper portion of the exposed portion of the photosensitive material, the upper portion of the exposed portion of the photosensitive material being exposed at an energy level between about 1 kJ/cm3 and about 20 kJ/cm3, when being exposed to the X-ray.
    Type: Application
    Filed: February 5, 2002
    Publication date: January 16, 2003
    Applicant: POSTECH FOUNDATION
    Inventors: Seung Seob Lee, Sung-Keun Lee, Kwang-Cheol Lee
  • Patent number: 6501824
    Abstract: An X-ray mask is integrated with a micro-actuator. The X-ray mask includes a mask portion, a mask holder portion, at least one elasticized supporter and a micro-actuator unit. The mask portion has a thin shuttle mass and an X-ray absorber attached on the shuttle mass. The mask holder portion is formed around the mask portion with a predetermined distance maintained therebetween. The elasticized supporter connects the mask portion and the mask holder portion elastically. The micro-actuator unit is prepared between the mask portion and the mask holder portion to precisely control a position of the mask portion when a voltage is applied.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: December 31, 2002
    Assignee: Postech Foundation
    Inventors: Seung Seob Lee, Kwang-Cheol Lee, Sang Jun Moon
  • Patent number: D559803
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: January 15, 2008
    Assignee: LG Innotek Co., Ltd
    Inventor: Kwang Cheol Lee