Patents by Inventor Youn C. Kim

Youn C. Kim 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).

  • Phosphorus-containing nitrogen compounds as flame retardants and synthetic resins containing them
    Patent number: 4742088
    Abstract: Nitrogen-containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivatives are prepared by condensation of the oxide with amines and aldehydes or ketones. They may be used as additive flame retardants or incorporated into synthetic resins such as polyesters and polyurethane foams, by copolymerization to form flame-retardant resins. They may also be used as antioxidants, germicides or herbicides.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: May 3, 1988
    Assignee: Kolon Industries, Inc.
    Inventor: Youn C. Kim