Patents by Inventor Liang-Chi CHANG

Liang-Chi 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).

  • Sensing device for detecting material depth, liquid-level, and temperature
    Patent number: 8950255
    Abstract: A sensing device can detect material depth, liquid-level, and temperature. The sensing device has a probe, a control module, a volume sensing module, a thermal sensing module, an output module, and a power module. The probe has two material electrodes connected to the volume sensing module and a thermal electrode connected to the thermal sensing module. A rated voltage is applied at the material electrodes based on radio frequency admittance. A current deviation of the material electrodes is obtained by the volume sensing module, and calculated via the control module by material characteristics to obtain a correct storage amount of material. A temperature at each material depth is correctly detected by the thermal electrode. Steel cable is used as the material of the material electrodes of the probe to detect material depth or liquid level with high impact resistant ability.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: February 10, 2015
    Assignee: Finetek Co., Ltd.
    Inventors: Liang-Chi Chang, Cheng-Lun Chang, Ching-Jui Chen, Chao-Kai Cheng
  • SENSING DEVICE FOR DETECTING MATERIAL DEPTH, LIQUID-LEVEL, AND TEMPERATURE
    Publication number: 20130182742
    Abstract: A sensing device can detect material depth, liquid-level, and temperature. The sensing device has a probe, a control module, a volume sensing module, a thermal sensing module, an output module, and a power module. The probe has two material electrodes connected to the volume sensing module and a thermal electrode connected to the thermal sensing module. A rated voltage is applied at the material electrodes based on radio frequency admittance. A current deviation of the material electrodes is obtained by the volume sensing module, and calculated via the control module by material characteristics to obtain a correct storage amount of material. A temperature at each material depth is correctly detected by the thermal electrode. Steel cable is used as the material of the material electrodes of the probe to detect material depth or liquid level with high impact resistant ability.
    Type: Application
    Filed: May 3, 2012
    Publication date: July 18, 2013
    Applicant: FINETEK CO., LTD.
    Inventors: Liang-Chi CHANG, Cheng-Lun CHANG, Ching-Jui CHEN, Chao-Kai CHENG