Patents by Inventor Hee Chan CHA

Hee Chan CHA 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).

  • Light irradiating toothbrush having multiple light sources arranged in alternation
    Patent number: 11925815
    Abstract: Provided is a light irradiated toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irradiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: March 12, 2024
    Inventor: Hee Chan Cha
  • LIGHT IRRADIATING TOOTHBRUSH HAVING MULTIPLE LIGHT SOURCES ARRANGED IN ALTERNATION
    Publication number: 20220134130
    Abstract: Provided is a light irradiated toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irradiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 5, 2022
    Inventor: Hee Chan Cha
  • Light irradiating toothbrush having multiple light sources arranged in alternation
    Patent number: 11241588
    Abstract: Provided is a light irradiated toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irradiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: February 8, 2022
    Inventor: Hee Chan Cha
  • Light Irradiating Toothbrush Having Multiple Light Sources Arranged in Alternation
    Publication number: 20190255351
    Abstract: Provided is a light irradiated toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irridiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Inventor: Hee Chan Cha
  • LIGHT IRRADIATING TOOTHBRUSH HAVING MULTIPLE LIGHT SOURCES ARRANGED IN ALTERNATION
    Publication number: 20150283401
    Abstract: Provided is a light irradiating toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irradiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.
    Type: Application
    Filed: June 18, 2013
    Publication date: October 8, 2015
    Inventor: Hee Chan CHA