Patents by Inventor Jun Seob Song

Jun Seob Song 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).

  • Patent number: 6432510
    Abstract: A fluorinated resin having enhanced wettability to water prepared by roughening a surface of the fluorinated resin such that a central line roughness average (Ra) of the surface is increased to at least 0.1 &mgr;m, and then depositing thereon a thin hydrophilic film while maintaining the central line roughness average (Ra) of at least 0.1 &mgr;m, the thin hydrophilic film being formed from a hydrophilic substance having a contact angle of water of less that 90°, and the resulting fluorinated resin having up to 20° of contact angle of water. The fluorinated resins are able to maintain high hydrophilicity even after prolonged exposure to the atmosphere and can be used in various fields that require bio-compatibility and in permeable membranes or filters.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: August 13, 2002
    Assignee: Samyang Corporation
    Inventors: Sung Ryong Kim, Sung Chul Park, Jun Seob Song
  • Patent number: 5864004
    Abstract: A flame retardant resin composition having improved heat distortion temperature and mechanical properties comprising 5-20 parts by weight of phosphate-based flame retardant and 0.01-10 parts by weight of tetrafluoroethylene powder per 100 parts by weight of PC/ABS which comprises 5-95% by weight of polycarbonate and 5-95% by weight of acrylonitrile-butadiene-styrene copolymer, characterized in that said phosphate-based flame retardant is oligomeric phosphate ester of the following formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent cresyl group; n=1 to 3; and X is derived from dihydric bisphenol A and represented by the following formula II. ##STR2## The resin composition according to the invention may be applied to the indoor applications such as the housing of domestic electric appliances, the interior decoration of automobiles, or the like.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: January 26, 1999
    Assignee: Samyang Corporation
    Inventors: Sung Ryong Kim, Young Joon Choi, Jun Seob Song