Patents by Inventor Tseng Chang

Tseng 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: 20250150571
    Abstract: The invention relates to a display device which comprises a light source, a grid structure and a photo interrupter. The grid structure is disposed above the light source and can move left and right relative to the light source. When the grid structure does not block the photo interrupter, the light source receives a first signal, and when the grid structure blocks the photo interrupter, the light source receives a second signal.
    Type: Application
    Filed: June 3, 2024
    Publication date: May 8, 2025
    Inventors: Ching-Tien Lien, Kai-Wen CHEN, Chi-Tseng CHANG, Kuo-Shu HUANG
  • Patent number: 11004997
    Abstract: An infrared thermal emitter includes a substrate, a light-emitting unit and an infrared-emitting unit. The light-emitting unit is disposed on the substrate in a laminating direction and has a light-exiting surface away from the substrate. The infrared-emitting unit is disposed on the substrate in the laminating direction to cover the light-emitting unit and includes a layered structure having a light-absorbing layer that is aligned with the light-emitting unit in the laminating direction. The light-absorbing layer absorbs light emitted from the light-emitting unit so as to be heated up and to generate infrared radiation.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: May 11, 2021
    Assignees: GODSMITH SENSOR INC., OPTO TECH CORPORATION
    Inventors: Jin-Shown Shie, Yi-Chun Liao, Chieh-Yi Chen, Chung-Cheng Lin, Cheng-Wei Yang, Chi-Tseng Chang
  • Publication number: 20200083394
    Abstract: An infrared thermal emitter includes a substrate, a light-emitting unit and an infrared-emitting unit. The light-emitting unit is disposed on the substrate in a laminating direction and has a light-exiting surface away from the substrate. The infrared-emitting unit is disposed on the substrate in the laminating direction to cover the light-emitting unit and includes a layered structure having a light-absorbing layer that is aligned with the light-emitting unit in the laminating direction. The light-absorbing layer absorbs light emitted from the light-emitting unit so as to be heated up and to generate infrared radiation.
    Type: Application
    Filed: August 13, 2019
    Publication date: March 12, 2020
    Applicants: Godsmith Sensor Inc., Opto Tech Corporation
    Inventors: Jin-Shown SHIE, Yi-Chun LIAO, Chieh-Yi CHEN, Chung-Cheng LIN, Cheng-Wei YANG, Chi-Tseng CHANG
  • Publication number: 20180041046
    Abstract: A multi-power supply device includes a plurality of power input units configured to each supply an input power and being DC power input units, AC power input units, or a combination thereof; power channel control units electrically connected to the power input units, respectively, and turned on as soon as the output end voltage of the power channel control units is lower than the input end voltage of the power channel control units, wherein the power channel control unit with the highest input voltage is turned on to output an ON voltage; and a power output unit electrically connected to the power channel control units and adapted to output the ON voltage.
    Type: Application
    Filed: August 4, 2016
    Publication date: February 8, 2018
    Inventors: KAI-YUAN FU, RUH-HUA WU, CHUNG-TSENG CHANG
  • Patent number: 9822011
    Abstract: The present invention provides a method for fabricating an oriented zeolite film including preparing a metal substrate and zeolite crystal with an aspect ratio of at least 2; laying the zeolite crystal on the metal substrate to obtain a first metal substrate; applying a precursor solution containing a first structure directing agent and a solvent on the first metal substrate to obtain a second metal substrate; placing the second metal substrate in a sealed container containing a predetermined amount of the solvent; and heating the sealed container at 100-550° C. for at least 15 minutes. Thus, a continuous oriented zeolite film is formed with uniform thickness and improved anti-corrosion ability.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: November 21, 2017
    Assignee: Hawing Gems Technology Co., Ltd.
    Inventors: Tseng-Chang Tsai, Shang-Tien Tsai, Lin-Yi Huang, Yuan-Chung Hao, Shiaw-Tseh Chiang
  • Patent number: 9605976
    Abstract: A multi-tier limit-angle protection device detects a rotation angle about a rotation axis of a driving apparatus to thereby control the operation of a driving motor of the driving apparatus. The multi-tier limit-angle protection device includes a first-axis potentiometer for generating a first-axis sensing signal, a first-axis limit-angle detecting module for generating a first-axis confirming signal, and a controller. The controller effectuates a first tier protection mechanism by determining whether a limit angle of the rotation axis is exceeded according to the first-axis sensing signal, effectuates a second tier protection mechanism by determining whether the first-axis potentiometer is operating well according to a first-axis confirming signal, and effectuates a third tier protection mechanism through its control over the driving motor.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: March 28, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ruh-Hua Wu, Chung-Tseng Chang
  • Patent number: 9593965
    Abstract: A non-contact adjustable hysteretic magnetic encoder includes a bipolar magnetic block, two magnetic sensing components, a storage, and a controller. After retrieving the current rotation angle by accessing a rotation angle table, the controller determines, by an encoding rule, digital logical values of a first phase signal (A-phase signal) and digital logical values of a second phase signal (B-phase signal) and outputs the digital logical values. The phase difference between a first phase signal and a second phase signal is adjusted, and a hysteresis range, also known as hysteresis angle, is adjusted, according to the grids attributed to the predetermined number of grids before the turning point and the grids attributed to the predetermined number of grids after the turning point. Hence, the non-contact adjustable hysteretic magnetic encoder features enhanced potential of expansion and marked industrial practicability.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: March 14, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ruh-Hua Wu, Chung-Tseng Chang
  • Publication number: 20160236942
    Abstract: The present invention provides a method for fabricating an oriented zeolite film including preparing a metal substrate and zeolite crystal with an aspect ratio of at least 2; laying the zeolite crystal on the metal substrate to obtain a first metal substrate; applying a precursor solution containing a first structure directing agent and a solvent on the first metal substrate to obtain a second metal substrate; placing the second metal substrate in a sealed container containing a predetermined amount of the solvent; and heating the sealed container at 100-550° C. for at least 15 minutes. Thus, a continuous oriented zeolite film is formed with uniform thickness and improved anti-corrosion ability.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 18, 2016
    Inventors: Tseng-Chang TSAI, Shang-Tien TSAI, Lin-Yi HUANG, Yuan-Chung HAO, Shiaw-Tseh CHIANG
  • Publication number: 20160161287
    Abstract: A multi-tier limit-angle protection device detects a rotation angle about a rotation axis of a driving apparatus to thereby control the operation of a driving motor of the driving apparatus. The multi-tier limit-angle protection device includes a first-axis potentiometer for generating a first-axis sensing signal, a first-axis limit-angle detecting module for generating a first-axis confirming signal, and a controller. The controller effectuates a first tier protection mechanism by determining whether a limit angle of the rotation axis is exceeded according to the first-axis sensing signal, effectuates a second tier protection mechanism by determining whether the first-axis potentiometer is operating well according to a first-axis confirming signal, and effectuates a third tier protection mechanism through its control over the driving motor.
    Type: Application
    Filed: December 5, 2014
    Publication date: June 9, 2016
    Inventors: RUH-HUA WU, CHUNG-TSENG CHANG
  • Publication number: 20160161284
    Abstract: A microforce measuring device includes a base; a fixing component disposed at the base; a cantilever fixed at one end by the fixing component; a magnetic component disposed at the cantilever; a Hall effect sensing unit disposed at the base, aimed at the magnetic component, and spaced apart from the magnetic component by a distance to sense a change in a magnetic field of the magnetic component and generate a sensing signal; and a signal processing unit electrically connected to the Hall effect sensing unit to receive and analyze the sensing signal. Parts and components of the microforce measuring device are commercially available and cheap, so that the microforce measuring device incurs low manufacturing costs and measures a variation in a force of less than 5 gf precisely.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Inventors: RUH-HUA WU, TING-HUNG SU, CHUNG-TSENG CHANG
  • Publication number: 20160161285
    Abstract: A non-contact adjustable hysteretic magnetic encoder includes a bipolar magnetic block, two magnetic sensing components, a storage, and a controller. After retrieving the current rotation angle by accessing a rotation angle table, the controller determines, by an encoding rule, digital logical values of a first phase signal (A-phase signal) and digital logical values of a second phase signal (B-phase signal) and outputs the digital logical values. The phase difference between a first phase signal and a second phase signal is adjusted, and a hysteresis range, also known as hysteresis angle, is adjusted, according to the grids attributed to the predetermined number of grids before the turning point and the grids attributed to the predetermined number of grids after the turning point. Hence, the non-contact adjustable hysteretic magnetic encoder features enhanced potential of expansion and marked industrial practicability.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Inventors: RUH-HUA WU, CHUNG-TSENG CHANG
  • Patent number: 8556463
    Abstract: A simple detachable illumination lamp tube includes a tube unit, a heat-dissipating unit, a light-emitting unit, a support unit and a lateral cover unit. The tube unit has a light-permitting hollow tube. The heat-dissipating unit has a heat-dissipating substrate received in the light-permitting hollow tube. The heat-dissipating substrate has two opposite lateral sides contacting the inner surface of the light-permitting hollow tube. The light-emitting unit has a plurality of strip light-emitting modules received in the light-permitting hollow tube. The strip light-emitting modules are disposed on the heat-dissipating substrate and electrically connected in sequence. The support unit has a plurality of support elements received in the light-permitting hollow tube and disposed between a bottom side of the heat-dissipating substrate and the inner surface of the light-permitting hollow tube. The lateral cover unit has two lateral covers installed on two ends of the light-permitting hollow tube.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 15, 2013
    Assignee: Harvatek Corporation
    Inventors: Bily Wang, Chi-Tseng Chang, Chi-Kang Lo, Zhen Hao Fan
  • Patent number: 8425931
    Abstract: The description provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: April 23, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Patent number: 8398275
    Abstract: A lamp head assembly includes an outer head unit, an inner head unit, and an elastic pressing unit. The outer head unit includes at least two conductive pins. The inner head unit is disposed rotatably in the outer head unit. The elastic pressing unit is disposed movably in the outer head unit for selectively positioning the position of the inner head unit relative to the outer head unit or the position of the outer head unit relative to the inner head unit, wherein the elastic pressing unit includes a pressing element selectively exposed from the outer head unit.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 19, 2013
    Assignee: Harvatek Corporation
    Inventors: Bily Wang, Chi-Tseng Chang, Chi-Kang Lo, Zhen-Hao Fan
  • Patent number: 8313765
    Abstract: The invention provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: November 20, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Publication number: 20120283429
    Abstract: The description provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Publication number: 20120069583
    Abstract: A lamp head assembly includes an outer head unit, an inner head unit, and an elastic pressing unit. The outer head unit includes at least two conductive pins. The inner head unit is disposed rotatably in the outer head unit. The elastic pressing unit is disposed movably in the outer head unit for selectively positioning the position of the inner head unit relative to the outer head unit or the position of the outer head unit relative to the inner head unit, wherein the elastic pressing unit includes a pressing element selectively exposed from the outer head unit.
    Type: Application
    Filed: January 10, 2011
    Publication date: March 22, 2012
    Applicant: HARVATEK CORPORATION
    Inventors: BILY WANG, CHI-TSENG CHANG, CHI-KANG LO, ZHEN-HAO FAN
  • Patent number: 8124128
    Abstract: An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: February 28, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin, Yuan-Hung Hsu
  • Publication number: 20120014087
    Abstract: A simple detachable illumination lamp tube includes a tube unit, a heat-dissipating unit, a light-emitting unit, a support unit and a lateral cover unit. The tube unit has a light-permitting hollow tube. The heat-dissipating unit has a heat-dissipating substrate received in the light-permitting hollow tube. The heat-dissipating substrate has two opposite lateral sides contacting the inner surface of the light-permitting hollow tube. The light-emitting unit has a plurality of strip light-emitting modules received in the light-permitting hollow tube. The strip light-emitting modules are disposed on the heat-dissipating substrate and electrically connected in sequence. The support unit has a plurality of support elements received in the light-permitting hollow tube and disposed between a bottom side of the heat-dissipating substrate and the inner surface of the light-permitting hollow tube. The lateral cover unit has two lateral covers installed on two ends of the light-permitting hollow tube.
    Type: Application
    Filed: January 18, 2011
    Publication date: January 19, 2012
    Applicant: HARVATEK CORPORATION
    Inventors: BILY WANG, CHI-TSENG CHANG, CHI-KANG LO, ZHEN HAO FAN
  • Patent number: 8000860
    Abstract: The present invention relates to a steering angle sensor, which includes a substrate. A shaft bore and a first gear are adapted on the substrate. The first gear has a shaft sleeve, which passes through the shaft bore. And a steering column of a steering wheel passes through the shaft sleeve. A second gear is adapted on the substrate, and is in mesh with the first gear. A rotary sensor is located atop and assembled with the second gear. Besides, a signal processing circuit is coupled electrically with the rotary sensor. By simply meshing the first and the second gears and passing the steering column of the steering wheel through the first gear, when the steering wheel turns, the second gear will be driven to turn as well, which, in turn, drives the rotary sensor. Thereby, the number of components in the steering angle sensor is reduced, and the volume thereof is reduced effectively as well.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: August 16, 2011
    Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
    Inventors: Ruh-Hua Wu, Chung-Tseng Chang, Jyh Chiang Liou