Patents by Inventor Li-Chih Chang

Li-Chih 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: 20240132904
    Abstract: The present invention relates to a method for producing recombinant human prethrombin-2 protein and having human ?-thrombin activity by the plant-based expression systems.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 25, 2024
    Applicant: PROVIEW-MBD BIOTECH CO., LTD.
    Inventors: Yu-Chia CHANG, Jer-Cheng KUO, Ruey-Chih SU, Li-Kun HUANG, Ya-Yun LIAO, Ching-I LEE, Shao-Kang HUNG
  • Patent number: 11956994
    Abstract: The present disclosure is generally related to 3D imaging capable OLED displays. A light field display comprises an array of 3D light field pixels, each of which comprises an array of corrugated OLED pixels, a metasurface layer disposed adjacent to the array of 3D light field pixels, and a plurality of median layers disposed between the metasurface layer and the corrugated OLED pixels. Each of the corrugated OLED pixels comprises primary or non-primary color subpixels, and produces a different view of an image through the median layers to the metasurface to form a 3D image. The corrugated OLED pixels combined with a cavity effect reduce a divergence of emitted light to enable effective beam direction manipulation by the metasurface. The metasurface having a higher refractive index and a smaller filling factor enables the deflection and direction of the emitted light from the corrugated OLED pixels to be well controlled.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: April 9, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Chung-Chih Wu, Hoang Yan Lin, Guo-Dong Su, Zih-Rou Cyue, Li-Yu Yu, Wei-Kai Lee, Guan-Yu Chen, Chung-Chia Chen, Wan-Yu Lin, Gang Yu, Byung-Sung Kwak, Robert Jan Visser, Chi-Jui Chang
  • Publication number: 20240074119
    Abstract: An immersion cooling system includes a pressure seal tank, an electronic apparatus, a pressure balance pipe and a relief valve. The pressure seal tank is configured to store coolant. A vapor space is formed in the pressure seal tank above the liquid level of the coolant. The electronic apparatus is completely immersed in the coolant. The pressure balance pipe has a gas collection length. The first port of the pressure balance pipe is disposed on the top surface of the pressure seal tank. The relief valve is disposed on the second port of the pressure balance pipe. The second port is farther away from the top surface of the pressure seal tank than the first port. The gas collection length of the pressure equalization tube allows the concentration of vaporized coolant at the first port to be greater than the concentration of vaporized coolant at the second port.
    Type: Application
    Filed: May 9, 2023
    Publication date: February 29, 2024
    Inventors: Ren-Chun CHANG, Wei-Chih LIN, Sheng-Chi WU, Wen-Yin TSAI, Li-Hsiu CHEN
  • Patent number: 10977545
    Abstract: A radio frequency screw antenna includes a metal radiation body and a coupling loop circuit. The metal radiation body includes a shank having a radial direction, a head connected to the shank, and a groove positioned at the head. A length direction of the groove is parallel to the radial direction. The coupling loop circuit is disposed at a first side wall of the groove.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: April 13, 2021
    Assignee: NATIONAL CHANGHUA UNIVERSITY OF EDUCATION
    Inventors: Yeong-Lin Lai, Li-Chih Chang
  • Publication number: 20200175348
    Abstract: A radio frequency screw antenna includes a metal radiation body and a coupling loop circuit. The metal radiation body includes a shank having a radial direction, a head connected to the shank, and a groove positioned at the head. A length direction of the groove is parallel to the radial direction. The coupling loop circuit is disposed at a first side wall of the groove.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Inventors: Yeong-Lin LAI, Li-Chih CHANG
  • Patent number: 10249778
    Abstract: A solar cell structure for wireless charging includes a substrate and at least one thin film solar cell disposed on a surface of the substrate, wherein the thin film solar cell has a winding coil structure. Accordingly, in the thin film solar cell, the electrode which is the winding coil structure may be used as electromagnetic induction coil or millimeter-wave radio wave receiving radiator.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: April 2, 2019
    Assignee: Industrial Technology Research Institute
    Inventors: Hung-Ru Hsu, Li-Chih Chang, Tung-Po Hsieh, Yeong-Lin Lai, Ang-Lun Lee
  • Publication number: 20170162735
    Abstract: A solar cell structure for wireless charging includes a substrate and at least one thin film solar cell disposed on a surface of the substrate, wherein the thin film solar cell has a winding coil structure. Accordingly, in the thin film solar cell, the electrode which is the winding coil structure may be used as electromagnetic induction coil or millimeter-wave radio wave receiving radiator.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 8, 2017
    Inventors: Hung-Ru Hsu, Li-Chih Chang, Tung-Po Hsieh, Yeong-Lin Lai, Ang-Lun Lee
  • Publication number: 20140158765
    Abstract: A radio frequency identification automatic detecting system with an antenna net includes a radio frequency identification module, an enhancing surface wave-guide coaxial cable structure including a coaxial cable having at least one aperture region without an outer conducting layer, a receiving apparatus having a plurality of receiving spaces and a plurality of extension wires disposed adjacent to the receiving spaces and coupled or connected to the outer conducting layer of the coaxial cable. The electromagnetic field is formed in nearby regions adjacent to the receiving spaces because the electromagnetic wave caused by the current generated from the radio frequency identification module is transmitted by the outer conducting layer and extension wires. The radio frequency identification electronic tag on the object is triggered automatically when the object is moved toward or moved out from the respective receiving space such that the automatic detecting effect is achieved.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Inventors: Li-Chih Chang, Tai-Hwa Liu, Yi-Chun Sung, Cheng-Lun Yin
  • Patent number: 7920364
    Abstract: A power supply with adjustable outputted voltage includes an AC power input processing circuit and a DC power input processing circuit. The AC power input processing circuit has at least one voltage adjuster that is electrically connected with the DC power input processing circuit for adjusting the outputted voltage. The DC power input processing circuit includes a current sensor, a DC/DC converter, a ripple filter, and a DC/DC self-drive switch. When an extremely large inputted current is detected by the current sensor and the DC/DC converter stops actions, the DC/DC self-drive switch is turned off to protect the circuit.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: April 5, 2011
    Inventor: Li-Chih Chang
  • Patent number: 7787274
    Abstract: A power supply with adjustable outputted voltage includes a casing, a circuit board, a voltage-adjusting knob and a rotary wheel. The casing is provided thereon with a window, and the circuit board is disposed in the casing. The circuit board is electrically connected to AC/DC power input processing circuit in which only AC (or DC) exists or both AC and DC exist simultaneously. The voltage-adjusting knob is electrically connected on the circuit board. The rotary wheel is provided thereon with a plurality of voltage-adjusting numerals. The voltage-adjusting numerals are located to correspond to the window of the casing and are displayed in the window.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 31, 2010
    Inventor: Li-Chih Chang
  • Publication number: 20090273865
    Abstract: A power supply with adjustable outputted voltage includes an AC power input processing circuit and a DC power input processing circuit. The AC power input processing circuit has at least one voltage adjuster that is electrically connected with the DC power input processing circuit for adjusting the outputted voltage. The DC power input processing circuit includes a current sensor, a DC/DC converter, a ripple filter, and a DC/DC self-drive switch. When an extremely large inputted current is detected by the current sensor and the DC/DC converter stops actions, the DC/DC self-drive switch is turned off to protect the circuit.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventor: Li-Chih Chang
  • Publication number: 20090273333
    Abstract: A power supply with adjustable outputted voltage includes a casing, a circuit board, a voltage-adjusting knob and a rotary wheel. The casing is provided thereon with a window, and the circuit board is disposed in the casing. The circuit board is electrically connected to AC/DC power input processing circuit in which only AC (or DC) exists or both AC and DC exist simultaneously. The voltage-adjusting knob is electrically connected on the circuit board. The rotary wheel is provided thereon with a plurality of voltage-adjusting numerals. The voltage-adjusting numerals are located to correspond to the window of the casing and are displayed in the window.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventor: Li-Chih CHANG