Patents by Inventor Sang-Hyun Chu

Sang-Hyun Chu 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).

  • Polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them
    Patent number: 6914147
    Abstract: The present invention relates to polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them. More particularly, the present invention relates to polyalkylene oxide porogens having hyper-branches expressed by the following formula (1), where the polyalkylene oxide porogen has a center molecular (D) having branches (W), and low dielectric-constant insulators having nanopores prepared by coating a mixture of the porogen and a high heat-resistant resin such as polysilsesquioxane and thermal treating the coated substrate at a temperature effective to degrade the porogen.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: July 5, 2005
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Changjin Lee, Yongku Kang, Jong Goo Kang, Hee Jung Kim, Moon Young Jin, Sang Il Seok, Kookheon Char, Sang-Hyun Chu
  • Polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them
    Publication number: 20030078443
    Abstract: The present invention relates to polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them. More particularly, the present invention relates to polyalkylene oxide porogens having hyper-branches expressed by the following formula (1), where the polyalkylene oxide porogen has a center molecular (D) having branches (W), and low dielectric-constant insulators having nanopores prepared by coating a mixture of the porogen and a high heat-resistant resin such as polysilsesquioxane and thermal treating the coated substrate at a temperature effective to degrade the porogen.
    Type: Application
    Filed: April 9, 2002
    Publication date: April 24, 2003
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Changjin Lee, Yongku Kang, Jong Goo Kang, Hee Jung Kim, Moon Young Jin, Sang Il Seok, Kookheon Char, Sang-Hyun Chu