Patents by Inventor Chien Hua Chang

Chien Hua 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).

  • Publication number: 20240102980
    Abstract: Gas detection devices comprise a dehydration unit a concentration unit, and a temperature control unit for controlling a temperature. The gas detection device includes a sampling mode in which sample gas flows into and out of the dehydration unit through a first port and a second port, respectively, wherein the volatile organic compounds in the sample gas are concentrated in the concentration unit. The temperature control unit may be configured such that the temperature of the sample gas after flowing out from the dehydration unit and before flowing into the concentration unit is not greater than a first preset temperature. Generation of condensed substances in the sample gas can be effectively avoided in a simple manner after the sample gas flows into the concentration unit, thereby further preventing ice blockage. Methods for detecting volatile organic compounds in a sample gas are also disclosed.
    Type: Application
    Filed: September 22, 2023
    Publication date: March 28, 2024
    Applicant: Thermo Fisher (Shanghai) Instrument Co., Ltd.
    Inventors: Te Yu HUNG, Chien Kuo CHANG, Colin ZOU, Rong Hua CHEN, Jun FANG
  • Patent number: 11916282
    Abstract: An antenna apparatus includes a feeding antenna inside an electronic device and one or more antenna elements, such as a floating metal antenna, disposed on a rear cover of the electronic device. The floating metal antenna and a feeding antenna inside the electronic device may form a coupling antenna structure. The feeding antenna may be an antenna fastened on an antenna support (which may be referred to as a support antenna). The feeding antenna may alternatively be a slot antenna formed by slitting on a metal middle frame of the electronic device. The antenna apparatus may be implemented in limited design space, thereby effectively saving antenna design space inside the electronic device. The antenna apparatus may generate excitation of a plurality of resonance modes, so that antenna bandwidth and radiation characteristics can be improved.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: February 27, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Pengfei Wu, Chien-Ming Lee, Dong Yu, Chih Yu Tsai, Chih-Hua Chang, Arun Sowpati
  • Publication number: 20160312468
    Abstract: An inorganic translucent material includes an inorganic body made of inorganic material. A plurality of inorganic translucent members is pre-embedded in the inorganic body, and two ends of each of the inorganic translucent members are exposed from the surface of the inorganic body, such that the light can pass through the inorganic translucent members so as to provide a light transmittable visual verisimilitude. The inorganic body further includes a plurality of metal enforcing materials assembled therein to improve the structural strength of the inorganic body.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 27, 2016
    Inventors: PO LUNG LU, HUNG CHIEH CHIEN, CHIEN HUA CHANG
  • Publication number: 20160073492
    Abstract: A forming method is to form an anti-corrosion protective film on a test contact of a substrate. The anti-corrosion protective film is to protect the test contact from corrosion. The forming method includes the steps of preparing a mask having at least one hole respective to the test contact, applying a printing process to print a metal paste onto the test contact through the hole of the mask, and applying a solder reflow process to melt and then solidify the metal paste so as to form the anti-corrosion protective film covering the test contact.
    Type: Application
    Filed: April 2, 2015
    Publication date: March 10, 2016
    Inventors: Chenghung WU, Chien-Hua CHANG, Shui-Ching CHU, Wenchi CHEN
  • Patent number: 6713674
    Abstract: A wire collection box includes a lower plate, four lateral plates and a wire plate. Each of the four lateral plates has a side thereof being joined to the lower plate and at least one lateral plate has a plurality of vertical wire passages with an upper opening at each of the wire passages. The wire plate is disposed on the lower plate and provides an extension receptacle for taking external electricity. The extension receptacle has at least a set of outlets. Further, the wire plate is attached with a plurality of wire take-in parts, which at least form a wire take-in group for the wire being located at one of the take-in parts and wound around the wire take-in group and passing through one of the wire passages for supplying electricity or transmitting signals.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: March 30, 2004
    Inventor: Chien Hua Chang
  • Publication number: 20040007371
    Abstract: A wire collection box includes a lower plate, four lateral plates and a wire plate. Each of the four lateral plates has a side thereof being joined to the lower plate and at least one lateral plate has a plurality of vertical wire passages with an upper opening at each of the wire passages. The wire plate is disposed on the lower plate and provides an extension receptacle for taking external electricity. The extension receptacle has at least a set of outlets. Further, the wire plate is attached with a plurality of wire take-in parts, which at least form a wire take-in group for the wire being located at one of the take-in parts and wound around the wire take-in group and passing through one of the wire passages for supplying electricity or transmitting signals.
    Type: Application
    Filed: June 6, 2003
    Publication date: January 15, 2004
    Inventor: Chien Hua Chang