Patents by Inventor Se-Whan Choi

Se-Whan 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).

  • Method for producing geogrid
    Patent number: 7959752
    Abstract: A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 14, 2011
    Assignee: Samyang Corporation
    Inventors: Kwang-Jung Yun, Seong-Ho Cho, Dong-Hwan Cha, Se-Whan Choi
  • Geogrid composed of fiber-reinforced polymeric strip and method for producing the same
    Publication number: 20060116040
    Abstract: A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 1, 2006
    Inventors: Kwang-Jung Yun, Seong-Ho Cho, Dong-Hwan Cha, Se-Whan Choi