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).
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Publication number: 20250150571Abstract: 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: ApplicationFiled: June 3, 2024Publication date: May 8, 2025Inventors: Ching-Tien Lien, Kai-Wen CHEN, Chi-Tseng CHANG, Kuo-Shu HUANG
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Patent number: 11004997Abstract: 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: GrantFiled: August 13, 2019Date of Patent: May 11, 2021Assignees: GODSMITH SENSOR INC., OPTO TECH CORPORATIONInventors: Jin-Shown Shie, Yi-Chun Liao, Chieh-Yi Chen, Chung-Cheng Lin, Cheng-Wei Yang, Chi-Tseng Chang
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Publication number: 20200083394Abstract: 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: ApplicationFiled: August 13, 2019Publication date: March 12, 2020Applicants: Godsmith Sensor Inc., Opto Tech CorporationInventors: Jin-Shown SHIE, Yi-Chun LIAO, Chieh-Yi CHEN, Chung-Cheng LIN, Cheng-Wei YANG, Chi-Tseng CHANG
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Publication number: 20180041046Abstract: 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: ApplicationFiled: August 4, 2016Publication date: February 8, 2018Inventors: KAI-YUAN FU, RUH-HUA WU, CHUNG-TSENG CHANG
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Patent number: 9822011Abstract: 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: GrantFiled: February 12, 2016Date of Patent: November 21, 2017Assignee: Hawing Gems Technology Co., Ltd.Inventors: Tseng-Chang Tsai, Shang-Tien Tsai, Lin-Yi Huang, Yuan-Chung Hao, Shiaw-Tseh Chiang
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Patent number: 9605976Abstract: 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: GrantFiled: December 5, 2014Date of Patent: March 28, 2017Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Ruh-Hua Wu, Chung-Tseng Chang
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Patent number: 9593965Abstract: 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: GrantFiled: December 8, 2014Date of Patent: March 14, 2017Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Ruh-Hua Wu, Chung-Tseng Chang
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Publication number: 20160236942Abstract: 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: ApplicationFiled: February 12, 2016Publication date: August 18, 2016Inventors: Tseng-Chang TSAI, Shang-Tien TSAI, Lin-Yi HUANG, Yuan-Chung HAO, Shiaw-Tseh CHIANG
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Publication number: 20160161287Abstract: 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: ApplicationFiled: December 5, 2014Publication date: June 9, 2016Inventors: RUH-HUA WU, CHUNG-TSENG CHANG
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Publication number: 20160161284Abstract: 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: ApplicationFiled: December 8, 2014Publication date: June 9, 2016Inventors: RUH-HUA WU, TING-HUNG SU, CHUNG-TSENG CHANG
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Publication number: 20160161285Abstract: 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: ApplicationFiled: December 8, 2014Publication date: June 9, 2016Inventors: RUH-HUA WU, CHUNG-TSENG CHANG
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Patent number: 8556463Abstract: 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: GrantFiled: January 18, 2011Date of Patent: October 15, 2013Assignee: Harvatek CorporationInventors: Bily Wang, Chi-Tseng Chang, Chi-Kang Lo, Zhen Hao Fan
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Patent number: 8425931Abstract: 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: GrantFiled: July 13, 2012Date of Patent: April 23, 2013Assignee: Industrial Technology Research InstituteInventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
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Patent number: 8398275Abstract: 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: GrantFiled: January 10, 2011Date of Patent: March 19, 2013Assignee: Harvatek CorporationInventors: Bily Wang, Chi-Tseng Chang, Chi-Kang Lo, Zhen-Hao Fan
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Patent number: 8313765Abstract: 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: GrantFiled: August 20, 2010Date of Patent: November 20, 2012Assignee: Industrial Technology Research InstituteInventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
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Publication number: 20120283429Abstract: 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: ApplicationFiled: July 13, 2012Publication date: November 8, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
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Publication number: 20120069583Abstract: 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: ApplicationFiled: January 10, 2011Publication date: March 22, 2012Applicant: HARVATEK CORPORATIONInventors: BILY WANG, CHI-TSENG CHANG, CHI-KANG LO, ZHEN-HAO FAN
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Patent number: 8124128Abstract: 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: GrantFiled: November 8, 2005Date of Patent: February 28, 2012Assignee: Industrial Technology Research InstituteInventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin, Yuan-Hung Hsu
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Publication number: 20120014087Abstract: 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: ApplicationFiled: January 18, 2011Publication date: January 19, 2012Applicant: HARVATEK CORPORATIONInventors: BILY WANG, CHI-TSENG CHANG, CHI-KANG LO, ZHEN HAO FAN
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Patent number: 8000860Abstract: 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: GrantFiled: April 4, 2007Date of Patent: August 16, 2011Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Ruh-Hua Wu, Chung-Tseng Chang, Jyh Chiang Liou