Patents by Inventor Dae Woong Choi

Dae Woong Choi 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).

  • METHOD OF PREPARING TONER
    Publication number: 20100216069
    Abstract: Provided is a method of preparing a toner, the method including: preparing a solvent emulsion by stirring a medium including a polar medium, an organic solvent, and a surfactant; adding toner components including a resin and a pigment to the solvent emulsion; removing the organic solvent from the solvent emulsion including the toner components; and collecting a toner particle from the solvent emulsion from which the organic solvent is removed.
    Type: Application
    Filed: September 19, 2008
    Publication date: August 26, 2010
    Applicant: Samsung Fine Chemicals Co. LTd
    Inventors: Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn