Patents by Inventor Liat Keng KANG

Liat Keng KANG 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).

  • Patent number: 11623245
    Abstract: A vibrating piezoelectric atomizer comprising: a piezoelectric tube having a length, a first end defining an opening and a second end, the second end of the piezoelectric transducer tubular body is connected to a horn; the horn is dimensioned to be half wavelength resonator; the horn is folded and located alongside the piezoelectric tube; a metallic disk is connected to the horn near the first end of the piezoelectric tube, whereby by applying an alternating voltage across electrodes of the piezoelectric tube, the piezoelectric tube is excited into a resonant vibration when frequency of excitation equals to half wavelength resonant frequency of the piezoelectric tube's length and vibrates in synchronism and is communicated to the metallic disk to atomize a liquid.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: April 11, 2023
    Inventors: David Wuchinich, Liat Keng Kang, William Tan
  • Patent number: 11325149
    Abstract: The apparatus has an atomizer for the dispersal of a liquid and has an enclosed removable cartridge assembly with a reservoir of liquid and a wick with one end in communication with the liquid and a vibrating transducer in contact with another end of the wick; the transducer, wick and cartridge of liquid are arranged to allow a capillary volume of liquid from the wick to vibrate together to disperse the liquid in a direction away from the wick.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 10, 2022
    Inventors: William Tan, Liat Keng Kang
  • Publication number: 20210020823
    Abstract: There is presented a method for driving a piezoelectric device and an atomizer for atomizing a fluid, and an atomization method for a fluid using a piezoelectric device; the atomizer employs a piezoelectric device and circuitry that uses a switching voltage across the piezoelectric device at an operating frequency; sensing a sensed voltage corresponding to a phase of the piezoelectric device; and responsive to whether the sensed voltage is in phase or out of phase relative to the switching voltage, changing the operating frequency provided to the piezoelectric device, and the changing is one of: increasing the operating frequency by a first value, or decreasing the operating frequency by a second value.
    Type: Application
    Filed: September 26, 2020
    Publication date: January 21, 2021
    Inventors: Liat Keng KANG, William Tan
  • Publication number: 20200156113
    Abstract: A vibrating piezoelectric atomizer comprising: a piezoelectric tube having a length, a first end defining an opening and a second end, the second end of the piezoelectric transducer tubular body is connected to a horn; the horn is dimensioned to be half wavelength resonator; the horn is folded and located alongside the piezoelectric tube; a metallic disk is connected to the horn near the first end of the piezoelectric tube, whereby by applying an alternating voltage across electrodes of the piezoelectric tube, the piezoelectric tube is excited into a resonant vibration when frequency of excitation equals to half wavelength resonant frequency of the piezoelectric tube's length and vibrates in synchronism and is communicated to the metallic disk to atomize a liquid.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 21, 2020
    Inventors: David Wuchinich, Liat Keng KANG, William Tan
  • Publication number: 20200009600
    Abstract: The apparatus has an atomizer for the dispersal of a liquid and has an enclosed removable cartridge assembly with a reservoir of liquid and a wick with one end in communication with the liquid and a vibrating transducer in contact with another end of the wick; the transducer, wick and cartridge of liquid are arranged to allow a capillary volume of liquid from the wick to vibrate together to disperse the liquid in a direction away from the wick.
    Type: Application
    Filed: May 16, 2019
    Publication date: January 9, 2020
    Inventors: William Tan, Liat Keng KANG