Patents by Inventor Bong-suk Chang

Bong-suk Chang 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).

  • Spray-type insecticidal paint and manufacturing process thereof
    Patent number: 5912003
    Abstract: The present invention provides spray-type insecticidal paint which has long lasting insecticidal effects by contact against various insects but is not harmful to human and warm-blooded animals, containing 0.1-2.5 Wt % of a pyrethroid insecticide, 5-10 Wt % of organic acrylic resin, 0.01-0.1 Wt % of an insect attractant, 30-60 Wt % of a propellent and 30-50 Wt % of solvent, and manufacturing process thereof.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: June 15, 1999
    Assignee: Kukbo Pharma Co., Ltd.
    Inventor: Bong-suk Chang