Patents by Inventor Byung Ki Choi

Byung Ki Choi 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).

  • Patent number: 8900660
    Abstract: Disclosed is a method for producing a silver (Ag) coating pigment. The method for producing a silver coating pigment according to the present invention comprises: a step of forming a tin compound pretreatment layer on the matrix surface; and a step of forming a silver coating layer on the lower portion of the tin compound pretreatment layer through a reflux and electroless plating process using a diluted solution of silver nitrate, ammonia water, a citric acid solution, and a diluted solution of potassium hydroxide.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: December 2, 2014
    Assignee: CQV Co., Ltd.
    Inventors: Dong-Min Heo, Jae-Il Jeong, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang, Man-Su Lee, Gun-Eik Jang
  • Patent number: 8808447
    Abstract: The present invention relates to a pigment paint for an exterior material and to a method for manufacturing the same. The pigment paint comprises: a flake matrix, a first metal oxide layer coated on the upper portion of the transparent matrix, an oxide layer containing MgO—SiO2 coated on the upper portion of the first metal oxide layer, and a second metal oxide layer coated on the upper portion of the oxide layer. In order to ensure humidity resistance and weather resistance required for a lustrous pigment paint for exterior materials, a cerium layer and an aluminum oxide layer are further coated. Properties such as high luminance, high chromaticity, and high gloss, which could not be achieved using conventional techniques, can be achieved and a pigment paint having a multi-colored pearl luster can be provided.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: August 19, 2014
    Assignee: CQV Co., Ltd.
    Inventors: Jae-Il Jeong, Nam-Il Lee, Sang-Keun Park, Jin-Hyung Lee, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Publication number: 20140165878
    Abstract: The interference pigment with high color intensity includes: a platelet-shaped substrate including at least one of natural mica, synthetic mica, alumina flakes, glass flakes, and iron oxide flakes; a lower first metal oxide layer formed of Fe2O3 on the platelet-shaped substrate; a second metal oxide layer formed of MgO.SiO2 on the lower first metal oxide layer; and an upper first metal oxide layer formed of Fe2O3 on the second metal oxide layer.
    Type: Application
    Filed: July 15, 2013
    Publication date: June 19, 2014
    Applicant: CQV CO., LTD.
    Inventors: Kil-Wan Chang, Kwang-Soo Lim, Byung-Ki Choi, Jin-Hyoung Lee
  • Publication number: 20140050769
    Abstract: Disclosed is a method for producing a silver (Ag) coating pigment. The method for producing a silver coating pigment according to the present invention comprises: a step of forming a tin compound pretreatment layer on the matrix surface; and a step of forming a silver coating layer on the lower portion of the tin compound pretreatment layer through a reflux and electroless plating process using a diluted solution of silver nitrate, ammonia water, a citric acid solution, and a diluted solution of potassium hydroxide.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Applicant: CQV CO., LTD.
    Inventors: Dong-Min Heo, Jae-Il Jeong, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang, Man-Su Lee, Gun-Eik Jang
  • Publication number: 20140041551
    Abstract: The present invention relates to a pigment paint for an exterior material and to a method for manufacturing the same. The pigment paint comprises: a flake matrix, a first metal oxide layer coated on the upper portion of the transparent matrix, an oxide layer containing MgO—SiO2 coated on the upper portion of the first metal oxide layer, and a second metal oxide layer coated on the upper portion of the oxide layer. In order to ensure humidity resistance and weather resistance required for a lustrous pigment paint for exterior materials, a cerium layer and an aluminum oxide layer are further coated. Properties such as high luminance, high chromaticity, and high gloss, which could not be achieved using conventional techniques, can be achieved and a pigment paint having a multi-colored pearl luster can be provided.
    Type: Application
    Filed: March 8, 2012
    Publication date: February 13, 2014
    Applicant: CQV CO., LTD.
    Inventors: Jae-Il Jeong, Nam-Il Lee, Sang-Keun Park, Jin-Hyung Lee, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Publication number: 20130318903
    Abstract: Some novel features pertain to a floor coupling structure that includes a first portion, a second portion extending from a first end of the first portion, the second portion for coupling to a first plank portion of a floor plank; and a third portion extending from a second end of the first portion, the third portion for coupling to a second plank portion of the floor plank. In some implementations, the first portion, the second portion and the third portion are a single piece. In some implementations, the floor coupling structure further includes a side protrusion and side slot, the side slot configured to couple to another protrusion of a first coupling structure, the side protrusion configured to coupled to another side slot of a second coupling structure. In some implementations, the second portion is a first coupling portion and the third portion is a second coupling portion.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventor: Byung Ki Choi
  • Publication number: 20120227627
    Abstract: The present invention relates to a nacreous pigment and a method of preparing the same. The nacreous pigment includes a flake substrate, a first metal oxide layer coated on the substrate, and an oxide layer coated on the first metal oxide layer and containing MgO.SiO2, and a second metal oxide layer coated on the oxide layer. The pigment exhibits high brightness, high chroma, high gloss, and multi-color effects.
    Type: Application
    Filed: June 22, 2011
    Publication date: September 13, 2012
    Applicant: CQV CO., LTD.
    Inventors: Jae-Il JEONG, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil -Wan CHANG
  • Patent number: 7337495
    Abstract: A transport device comprises a replaceable telescoping handle. Replacement is achieved by including a release and retaining mechanism in a base to which the telescoping handle is installed. A user can obtain a replacement telescoping handle, release and remove a broken telescoping handle using the release and retaining mechanism, and then install the replacement telescoping handle.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: March 4, 2008
    Assignee: Dong-In Entech Co., Ltd.
    Inventors: In-Soo Jung, Byung Ki Choi
  • Publication number: 20070251054
    Abstract: A transport device comprises a replaceable telescoping handle. Replacement is achieved by including a release and retaining mechanism in a base to which the telescoping handle is installed. A user can obtain a replacement telescoping handle, release and remove a broken telescoping handle using the release and retaining mechanism, and then install the replacement telescoping handle.
    Type: Application
    Filed: June 14, 2006
    Publication date: November 1, 2007
    Applicant: Dong In Entech Co., Ltd.
    Inventors: In-Soo Jung, Byung Ki Choi
  • Patent number: 7082641
    Abstract: A transport device comprises a replaceable telescoping handle. Replacement is achieved by including a release and retaining mechanism in a base to which the telescoping handle is installed. A user can obtain a replacement telescoping handle, release and remove a broken telescoping handle using the release and retaining mechanism, and then install the replacement telescoping handle.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: August 1, 2006
    Assignee: Dong-In Entech Co., Ltd.
    Inventors: In-Soo Jung, Byung Ki Choi
  • Patent number: 7003829
    Abstract: A stretcher comprises a patient support area supported by front legs and rear legs. The front legs and rear legs are coupled by a gear mechanism, and an actuation device coupled to the gear mechanism effects retraction or extension of the stretcher in a smooth and continuous motion. The actuation device is operable to lock the gear mechanism to position the stretcher at any desired height between fully extended and fully retracted.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: February 28, 2006
    Inventors: Byung Ki Choi, Michael Min