Patents by Inventor Yong Koo Hwang

Yong Koo Hwang 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: 20050160773
    Abstract: The invention presents a cleaning system for stubborn stains such as dress-shirt collar and sleeve edges comprising a motorized wheel brush, a pressure roller to press clothing item against the rotating brush, a roller pressure adjustment assembly, and a cleaning-solution container under the brush to make the brush partially submerged in the solution. The proposed system eliminates manual brushing currently performed on stubborn stains, resulting in a much improved cleaning quality and reduced labor costs.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 28, 2005
    Inventor: Yong Koo Hwang
  • Patent number: 6832404
    Abstract: A collar cleaning system for dress shirts comprising a slide plate, a guiding plate, a pressured soap-water spraying subsystem and a rotating brush is presented. The shirt collar is loaded onto the sliding plate and moved under the rotating brush while being sprayed with soap water to remove the dirt ring around the collar.
    Type: Grant
    Filed: February 8, 2003
    Date of Patent: December 21, 2004
    Inventor: Yong Koo Hwang
  • Publication number: 20040160001
    Abstract: A Go board with generalized topology and rules are presented. The board topology is generalized to include concave corner points, vacuous areas, two-dimensional grids over the surface of three-dimensional objects, grids consisting of three-dimensional meshes, a random graph, and temporarily invisible areas of the Go board. The Go playing rule is also generalized by allowing a player to place multiple stones, and by assigning different scores to different points on the Go board.
    Type: Application
    Filed: February 18, 2003
    Publication date: August 19, 2004
    Inventor: Yong Koo Hwang
  • Publication number: 20040154355
    Abstract: A collar cleaning system for dress shirts comprising a slide plate, a guiding plate, a pressured soap-water spraying subsystem and a rotating brush is presented. The shirt collar is loaded onto the sliding plate and moved under the rotating brush while being sprayed with soap water to remove the dirt ring around the collar.
    Type: Application
    Filed: February 8, 2003
    Publication date: August 12, 2004
    Inventor: Yong Koo Hwang
  • Patent number: 4863183
    Abstract: A tricycle which includes a pivotal handlebar about a handlebar sprocket, a drive chain rotating through sprockets disposed along a T-shaped configuration, a pair of front steering wheels, a single driven rear wheel, and a cargo basket attached to a beam member over the pair of front steering wheels, whereby, upon the upward and downward movement of the handlebar, the pair of steering wheels smoothly turn in the left or the right direction in a narrow space without shaking the cargo basket attached to the tricycle.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: September 5, 1989
    Inventors: In Mo Hwang, Yong Koo Hwang