Patents by Inventor An-gi Choi

An-gi 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 and device for teeth whitening using a dry type adhesive
    Patent number: 7785572
    Abstract: A dry type adhesive device for teeth whitening in which a peroxide tooth whitening agent is stabilized is disclosed. The dry type adhesive device for tooth whitening comprises a matrix type adhesive layer and a backing layer wherein the adhesive layer contains a peroxide as a teeth whitening agent and a hydrophilic glassy polymer as a base polymer so that the hydrophilic glassy polymer provides strong adhesion to teeth when hydrated at the enamel layer of the teeth in the moist oral cavity and the whitening agent is released. In particular, although the dry type adhesive device is touched with the hands or contact the skin during attaching to the teeth prior to hydration, no stickiness and releasing of the whitening agent takes place, thus being safe.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: August 31, 2010
    Assignee: LG Household and Health Care Ltd.
    Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, An-gi Choi
  • Method and device for teeth whitening using a dry type adhesive
    Publication number: 20040219111
    Abstract: A dry type adhesive device for teeth whitening in which a peroxide tooth whitening agent is stabilized is disclosed. The dry type adhesive device for tooth whitening comprises a matrix type adhesive layer and a backing layer wherein the adhesive layer contains a peroxide as a teeth whitening agent and a hydrophilic glassy polymer as a base polymer so that the hydrophilic glassy polymer provides strong adhesion to teeth when hydrated at the enamel layer of the teeth in the moist oral cavity and the whitening agent is released. In particular, although the dry type adhesive device is touched with the hands or contact the skin during attaching to the teeth prior to hydration, no stickiness and releasing of the whitening agent takes place, thus being safe.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 4, 2004
    Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, An-gi Choi