Patents by Inventor Hsein-Wen Chao

Hsein-Wen Chao 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).

  • Publication number: 20230131336
    Abstract: A material processing apparatus is disclosed. This material processing apparatus is particularly developed to utilize a quasi-traveling microwave to conduct heat treatment for a thread-type article like fiber, silk, artificial fiber, and artificial silk. The material processing apparatus comprises a primary waveguide tube, a microwave blocking plate, a secondary waveguide tube, and at least one microwave absorbing member disposed of in the primary waveguide tube. By such design, a microwave source supplies a microwave to the secondary waveguide tube and the primary waveguide tube, such that the microwave travels in the two waveguide tubes so as to become a quasi-traveling microwave. Therefore, in the case of a thread-type article being be fed into the primary waveguide tube via the secondary waveguide tube by a thread-type article transferring mechanism, the thread-type article is steadily and evenly heated by the quasi-traveling microwave in the two waveguide tubes.
    Type: Application
    Filed: December 2, 2021
    Publication date: April 27, 2023
    Applicant: National Tsing Hua University
    Inventors: Tsun-Hsu Chang, Hsein-Wen Chao, Hung-Chun Hsu, Yan-Ren Chen
  • Patent number: 11559164
    Abstract: Disclosures of the present invention describe a coaxial microwave rotary applicator for material processing, mainly comprising: a waveguide unit, a microwave generator connected to one end of the waveguide unit, a bearing unit, a chamber, a rotary shaft, a driver unit, a sampling unit. The bearing unit is connected to the waveguide unit through a non-rotary ring, and the chamber is connected to a rotary ring of the bearing unit, and the microwave generator is configured for supplying a microwave to the chamber. By such arrangements, it is able to uniformly heat a specific material disposed in the chamber by driving the chamber to rotate. It is worth noting that, a user is allowed to clearly observe the processing progress via the sampling unit during the heating process of the specific material.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: January 24, 2023
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Hsein-Wen Chao, Tsun-Hsu Chang, Huan-Jun Guo, Cheng-Hsuan Chan, Po-Yen Chiu, Yu-Tzu Chang
  • Publication number: 20200281395
    Abstract: Disclosures of the present invention describe a coaxial microwave rotary applicator for material processing, mainly comprising: a waveguide unit, a microwave generator connected to one end of the waveguide unit, a bearing unit, a chamber, a rotary shaft, a driver unit, a sampling unit. The bearing unit is connected to the waveguide unit through a non-rotary ring, and the chamber is connected to a rotary ring of the bearing unit, and the microwave generator is configured for supplying a microwave to the chamber. By such arrangements, it is able to uniformly heat a specific material disposed in the chamber by driving the chamber to rotate. It is worth noting that, a user is allowed to clearly observe the processing progress via the sampling unit during the heating process of the specific material.
    Type: Application
    Filed: November 7, 2019
    Publication date: September 10, 2020
    Inventors: HSEIN-WEN CHAO, TSUN-HSU CHANG, HUAN-JUN GUO, CHENG-HSUAN CHAN, PO-YEN CHIU, YU-TZU CHANG
  • Patent number: 9810645
    Abstract: A system for measuring a permittivity includes a resonant chamber, a conductive probe, a platform, a pillar, a detector, and a computing module. The resonant chamber has a cavity. The conductive probe is configured for introducing a microwave into the cavity of the resonant chamber. The platform is configured for carrying a sample. The pillar is positioned between the platform and a chamber wall, so that the platform protrudes from the chamber wall. The detector is used to detect a resonant frequency of the microwave when resonance occurs within the cavity. The computing module is configured for calculating a permittivity corresponding to the measured resonant frequency according to a corresponding relationship between resonant frequency and permittivity. The above-mentioned system for measuring a permittivity is capable of measuring a broader range of permittivity with simplified measurement steps and higher accuracy. A method for measuring a permittivity is also disclosed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: November 7, 2017
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Tsun-Hsu Chang, Hsein-Wen Chao, Wei-Syuan Wong
  • Publication number: 20160146742
    Abstract: A system for measuring a permittivity includes a resonant chamber, a conductive probe, a platform, a pillar, a detector, and a computing module. The resonant chamber has a cavity. The conductive probe is configured for introducing a microwave into the cavity of the resonant chamber. The platform is configured for carrying a sample. The pillar is positioned between the platform and a chamber wall, so that the platform protrudes from the chamber wall. The detector is used to detect a resonant frequency of the microwave when resonance occurs within the cavity. The computing module is configured for calculating a permittivity corresponding to the measured resonant frequency according to a corresponding relationship between resonant frequency and permittivity. The above-mentioned system for measuring a permittivity is capable of measuring a broader range of permittivity with simplified measurement steps and higher accuracy. A method for measuring a permittivity is also disclosed.
    Type: Application
    Filed: March 20, 2015
    Publication date: May 26, 2016
    Inventors: Tsun-Hsu CHANG, Hsein-Wen CHAO, Wei-Syuan WONG
  • Publication number: 20070061829
    Abstract: A disc cartridge is used for containing an optical information storage medium. The disc cartridge includes a cover and a carrier. In this case, a first connecting portion is protrusively disposed on the cover. The carrier has an accommodating space and a second connecting portion. The first connecting portion and the second connecting portion are disposed in the accommodating space and connect to each other for assembling the cover and the carrier.
    Type: Application
    Filed: December 15, 2005
    Publication date: March 15, 2007
    Inventors: I-Ching Kao, Hsein-Wen Chao