Patents by Inventor Do Choon Rha

Do Choon Rha 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: 8476339
    Abstract: A method and apparatus for producing a composite solid surface article are disclosed. The method includes feeding a first composition toward a mixing point and feeding solid particles toward the mixing point. The method further includes mixing at the mixing point the first composition and the solid particles fed to the mixing point to form a second composition, and transferring the second composition away from the mixing point. The method further comprises polymerizing the polymerizable compound in the second compound so as to form a curable composition comprising the solid particles. The apparatus includes a solid particle feeder, a slurry feeder and a blender configured to blend and transfer a mixture of the solid surface forming slurry and solid particles away from the blending area. The composite solid surface article produced using the method and apparatus contain particles with a size greater than 5 mm.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: July 2, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Do Choon Rha, Tae Hoon Kim, Mi Gon Kim, Gwang Ho Jung
  • Patent number: 8211536
    Abstract: The invention relates to a composite solid surface article. More particularly, the invention relates to a composite solid surface article containing fibers and polymeric powder particles. A composite solid surface article may comprise a matrix of at least one polymeric resin, randomly-shaped fibers dispersed in the matrix, wherein the article comprises a substantially smooth surface with a viewable pattern formed by one or more ingredients of the composite solid surface article, the viewable pattern comprises at least part of the randomly-shaped fibers.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: July 3, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Do Choon Rha, Eung Seo Park, Jae Wook Juen
  • Publication number: 20120148811
    Abstract: An artificial stone, including a solid material and surface-treated stone elements in the solid material, wherein the surface-treated stone elements are transparent stone elements having a coloring material disposed on surfaces thereof.
    Type: Application
    Filed: February 15, 2012
    Publication date: June 14, 2012
    Inventors: Do Choon RHA, Eung Seo Park, Jae Wook Juen
  • Patent number: 8133575
    Abstract: An artificial stone, including a solid material and surface-treated stone elements in the solid material, wherein the surface-treated stone elements are transparent stone elements having a coloring material disposed on surfaces thereof.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: March 13, 2012
    Assignee: Cheil Industries, Inc.
    Inventors: Do Choon Rha, Eung Seo Park, Jae Wook Juen
  • Patent number: 8034446
    Abstract: A composite solid surface article includes a surface layer with at least one first polymeric resin and a filler, and a backing layer on the surface layer with at least one second polymeric resin and wood particles.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: October 11, 2011
    Assignee: Cheil Industries, Inc.
    Inventors: Jae Wook Juen, Eung Seo Park, Do Choon Rha
  • Publication number: 20110118402
    Abstract: A composition for artificial marble includes (a) about 100 parts by weight of an acrylic resin; (b) about 1 to about 30 parts by weight of an ocher powder having a particle size of about 1 to about 50 ?m; (c) about 100 to about 200 parts by weight of an inorganic filler; (d) about 0.1 to about 10 parts by weight of cross-linking agent; and (e) about 0.1 to about 10 parts by weight of a polymerization initiator.
    Type: Application
    Filed: January 25, 2011
    Publication date: May 19, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Dong Choon CHUNG, Do Choon RHA, Eung Seo PARK
  • Patent number: 7923099
    Abstract: An acrylic artificial stone composition includes an acrylic resin, metallized polymer film particles, and an inorganic filler.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: April 12, 2011
    Assignee: Cheil Industries, Inc.
    Inventors: Eung Seo Park, Do Choon Rha
  • Patent number: 7875668
    Abstract: A composition for artificial marble includes (a) about 100 parts by weight of an acrylic resin; (b) about 1 to about 30 parts by weight of an ocher powder having a particle size of about 1 to about 50 ?m; (c) about 100 to about 200 parts by weight of an inorganic filler; (d) about 0.1 to about 10 parts by weight of cross-linking agent; and (e) about 0.1 to about 10 parts by weight of a polymerization initiator.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: January 25, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Dong Choon Chung, Do Choon Rha, Eung Seo Park
  • Publication number: 20100062256
    Abstract: A method and apparatus for producing a composite solid surface article are disclosed. The method includes feeding a first composition toward a mixing point and feeding solid particles toward the mixing point. The method further includes mixing at the mixing point the first composition and the solid particles fed to the mixing point to form a second composition, and transferring the second composition away from the mixing point. The method further comprises polymerizing the polymerizable compound in the second compound so as to form a curable composition comprising the solid particles. The apparatus includes a solid particle feeder, a slurry feeder and a blender configured to blend and transfer a mixture of the solid surface forming slurry and solid particles away from the blending area. The composite solid surface article produced using the method and apparatus contain particles with a size greater than 5 mm.
    Type: Application
    Filed: November 17, 2009
    Publication date: March 11, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Do Choon RHA, Tae Hoon KIM, Mi Gon KIM, Gwang Ho JUNG
  • Patent number: 7566492
    Abstract: A foamed stone article has a lower artificial stone layer and an upper foam layer that are a single body. A composition for the foamed stone article includes about 100 parts by weight of acrylic resin, about 10 to about 80 parts by weight of solid particles and about 0.1 to about 10 parts by weight of an initiator.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: July 28, 2009
    Assignee: Cheil Industries, Inc.
    Inventors: Eung Seo Park, Do Choon Rha, Jae Wook Juen
  • Publication number: 20060121264
    Abstract: The invention relates to a composite solid surface article. More particularly, the invention relates to a composite solid surface article containing fibers and polymeric powder particles. A composite solid surface article may comprise a matrix of at least one polymeric resin, randomly-shaped fibers dispersed in the matrix, wherein the article comprises a substantially smooth surface with a viewable pattern formed by one or more ingredients of the composite solid surface article, the viewable pattern comprises at least part of the randomly-shaped fibers.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 8, 2006
    Inventors: Do Choon Rha, Eung Park, Jae Juen