Patents by Inventor Jong C. Won

Jong C. Won 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).

  • Melt processable etherimideimide/etherimide copolymer
    Patent number: 5569738
    Abstract: This invention relates to melt processable copolymer of etherimideimide/etherimide herein-after identified as PEII/PEI copolymer of following structural formula(I). ##STR1## wherein, R and R' are independently selected from the groups of ##STR2## Ar and Ar' are independently selected from the groups of ##STR3## (wherein, R1 is H or C1-C6 alkyl group,R2 is II or C1-C4 alkyl group, andR3 is --O--, --CO--, --SO--, --SO2--.); andn and m are independently an integer between 5 and 500.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: October 29, 1996
    Assignees: Korea Research Institute of Chemical Technology, Cheil Industries, Inc.
    Inventors: Kil Y. Choi, Jong C. Won, Young T. Hong, Sang S. Woo, Youn S. Don
  • Polyetherimideimides and a method for manufacturing them
    Patent number: 5212277
    Abstract: The present invention relates to new polyetherimideimides having imideimide group with the following structural formula(I) and inherent viscosity of 0.27.about.0.71 dl/g, which can be made by effecting reaction between an aromatic bis(ether anhydride) and an organic diamine or an aromatic bis(nitro imideimide) and a metal salt of diol.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: May 18, 1993
    Assignees: Korea Research Institute of Chemical Technology, Cheil Industries, Inc.
    Inventors: Kwang-Sup Lee, Kil-Yeong Choi, Jong C. Won, Byoung K. Park, In-Tae Lee