Patents by Inventor Won Jai Park

Won Jai Park 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).

  • Deagglomerated barium sulfate
    Patent number: 7846409
    Abstract: The invention discloses deagglomerated barium sulphate which has an average primary particle size of less than 0.5 ?m and is coated with a dispersant. The dispersant has preferably reactive groups which are able to interact with the surface of the barium sulphate; particularly preferred dispersants are those which are able to endow the barium sulphate with a hydrophilic surface and have reactive groups for coupling to or into polymers. Also disclosed is a plastics premix comprising the deagglomerated, coated barium sulphate.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: December 7, 2010
    Assignee: Solvay Infra Bad Hoenningen GmbH
    Inventors: Ferdinand Hardinghaus, Christopher David Glende, Karl Hoehler, Won Jai Park, Rainer Stahl, Andreas Poppe
  • Epoxy resin with increased flexural impact strength and breaking extension
    Patent number: 7811668
    Abstract: Epoxy resins comprising deagglomerated barium sulphate with an average particle size of less than 0.5 ?M feature increased flexural impact strength and breaking extension. Epoxy resins of this kind can be used as, for example, composite material or binders in watercraft construction, in wind turbines, in pipes, for containers or in aircraft construction, in particular in composite materials comprising glass fibre or carbon fibre.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: October 12, 2010
    Assignee: Solvay Infra Bad Hoenningen GmbH
    Inventors: Rainer Stahl, Won Jai Park, Ferdinand Hardinghaus, Christopher David Glende, Karl Koehler