Patents by Inventor Dong Choon Chung

Dong Choon Chung 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).

  • Process for producing acrylic artificial marble having natural pattern
    Patent number: 8017051
    Abstract: The artificial marble with good natural pattern and color in accordance with the present invention is prepared mixing ununiformly at least two liquid resins through a line mixer 1, feeding the ununiformly mixed resin on a moving steel belt 4 at a constant speed through a flexible hose 2 and an exit nozzle 3, and reciprocating the exit nozzle perpendicularly to the steel belt by a predetermined program for the exit nozzle to stop at different positions for different durations. The line mixer used in this invention is a Kenics type and has inner elements of eight or less than eight. A line mixer with four to eight elements can be more preferably used.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: September 13, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Sung Mook Choi, Dong Choon Chung
  • Composite Solid Surface Article Containing Ocher
    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
  • Composite solid surface article containing loess
    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
  • Process for producing acrylic artificial marble having natural pattern
    Publication number: 20040137171
    Abstract: The artificial marble with good natural pattern and color in accordance with the present invention is prepared mixing ununiformly at least two liquid resins through a line mixer 1, feeding the ununiformly mixed resin on a moving steel belt 4 at a constant speed through a flexible hose 2 and an exit nozzle 3, and reciprocating the exit nozzle perpendicularly to the steel belt by a predetermined program for the exit nozzle to stop at different positions for different durations. The line mixer used in this invention is a Kenics type and has inner elements of eight or less than eight. A line mixer with four to eight elements can be more preferably used.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sung Mook Choi, Dong Choon Chung