Patents by Inventor Chen-An Ku
Chen-An Ku 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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Patent number: 10081690Abstract: Provided are a powdery diacetal clarifying agent and a method of preparing the same. The powdery diacetal clarifying agent comprises a diacetal compound and an inorganic silicon-containing compound having a pH value equal to or more than 6 and equal to or less than 12. The powdery diacetal clarifying agent of the composition can have excellent flowability, dispersability, thermal resistance, and color stability. Accordingly, the powdery diacetal clarifying agent does not release stinking odor and incur yellowing at high temperature, allowing the plastic articles to have improved appearance and visual appeal.Type: GrantFiled: June 23, 2016Date of Patent: September 25, 2018Inventors: Ting-Ti Huang, Chiu-Peng Tsou, Tien-Chu Chang, Ming-Chang Hsieh, Chen-Ku Hsieh
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Publication number: 20180094091Abstract: Provided is a method of preparing a powdery diacetal clarifying agent, which comprises mixing an aromatic aldehyde, a polyol, and an acid catalyst in an organic polar solvent, adding a hydrogenating agent and an inorganic silicon-containing agent into the foregoing mixture, and filtering the mixture. The powdery diacetal clarifying agent prepared by the method can have excellent flowability, dispersability, thermal resistance, and color stability. Accordingly, the powdery diacetal clarifying agent does not release stinking odor and incur yellowing at high temperature, allowing the plastic articles to have improved appearance and visual appeal.Type: ApplicationFiled: December 7, 2017Publication date: April 5, 2018Inventors: Chiu-Peng TSOU, Ting-Ti HUANG, Chen-Ku HSIEH, Tien-Chu CHANG, Ming-Chang HSIEH
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Publication number: 20170369611Abstract: Provided are a powdery diacetal clarifying agent and a method of preparing the same. The powdery diacetal clarifying agent comprises a diacetal compound and an inorganic silicon-containing compound having a pH value equal to or more than 6 and equal to or less than 12. The powdery diacetal clarifying agent of the composition can have excellent flowability, dispersability, thermal resistance, and color stability. Accordingly, the powdery diacetal clarifying agent does not release stinking odor and incur yellowing at high temperature, allowing the plastic articles to have improved appearance and visual appeal.Type: ApplicationFiled: June 23, 2016Publication date: December 28, 2017Inventors: Ting-Ti Huang, Chiu-Peng Tsou, Tien-Chu Chang, Ming-Chang Hsieh, Chen-Ku Hsieh
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Patent number: 9553444Abstract: A device for suppressing high-voltage electricity is connected to a three-phase circuit of an electric generator, including three up arm semiconductor switches, three low arm semiconductor switches, three reverse breakdown diodes respectively connected to the low arm semiconductor switches in parallel, and a control circuit sending PWM signals to turn on and off the low arm semiconductor switches sequentially to evenly share and absorb the energy of surge voltage. Each of the up arm semiconductor switches has a first terminal and a second terminal, wherein the first terminals are electrically connected together, and the second terminals are respectively electrically connected to one of three coils of the three-phase circuit. Each of the low arm semiconductor switches has a first terminal and a second terminal, wherein the first terminals are respectively electrically connected to the second terminals of the up arm semiconductor switches, and the second terminals are electrically connected together.Type: GrantFiled: December 11, 2015Date of Patent: January 24, 2017Assignee: MOBILETRON ELECTRONICS CO., LTD.Inventor: Chen-Ku Wei
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Publication number: 20160190796Abstract: A device for suppressing high-voltage electricity is connected to a three-phase circuit of an electric generator, including three up arm semiconductor switches, three low arm semiconductor switches, three reverse breakdown diodes respectively connected to the low arm semiconductor switches in parallel, and a control circuit sending PWM signals to turn on and off the low arm semiconductor switches sequentially to evenly share and absorb the energy of surge voltage. Each of the up arm semiconductor switches has a first terminal and a second terminal, wherein the first terminals are electrically connected together, and the second terminals are respectively electrically connected to one of three coils of the three-phase circuit. Each of the low arm semiconductor switches has a first terminal and a second terminal, wherein the first terminals are respectively electrically connected to the second terminals of the up arm semiconductor switches, and the second terminals are electrically connected together.Type: ApplicationFiled: December 11, 2015Publication date: June 30, 2016Inventor: Chen-Ku WEI
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Patent number: 9364157Abstract: An apparatus and method based on image for detecting heart rate activity is provided. The method includes: obtaining a plurality of color images; based on a complexion target condition, defining a target region; performing color composition analysis on the target region to obtain red channel signal, green channel signal and blue channel signal, respectively; performing independent component analysis on separate red, green and blue channel signals to obtain separate first independent component signal, second independent component signal and third independent component signal; performing frequency domain transform, signal energy computation and signal optimization processes on separate first, second and third independent component signals to obtain a filter signal, comparing filter signal based on a pre-set condition to determine if target region belonging to a human, and performing a physiological information analysis.Type: GrantFiled: April 2, 2014Date of Patent: June 14, 2016Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tung-Hung Lu, Hui-Chen Ku, Rong-Rong Chen
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Publication number: 20150131879Abstract: An apparatus and method based on image for detecting heart rate activity is provided. The method includes: obtaining a plurality of color images; based on a complexion target condition, defining a target region; performing color composition analysis on the target region to obtain red channel signal, green channel signal and blue channel signal, respectively; performing independent component analysis on separate red, green and blue channel signals to obtain separate first independent component signal, second independent component signal and third independent component signal; performing frequency domain transform, signal energy computation and signal optimization processes on separate first, second and third independent component signals to obtain a filter signal, comparing filter signal based on a pre-set condition to determine if target region belonging to a human, and performing a physiological information analysis.Type: ApplicationFiled: April 2, 2014Publication date: May 14, 2015Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tung-Hung LU, Hui-Chen KU, Rong-Rong CHEN
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Patent number: 8994197Abstract: An alignment mark includes a plurality of mark units. Each mark unit includes a first element and a plurality of second elements. Each second element includes opposite first and second end portions. The plurality of second elements are arranged along a direction. The first element extends adjacent to the first end portions of the plurality of second elements and parallel to the direction of the plurality of second elements.Type: GrantFiled: March 21, 2014Date of Patent: March 31, 2015Assignee: Nanya Technology CorporationInventors: Chen Ku Chiang, Yuan Hsun Wu
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Publication number: 20150045358Abstract: A pharmaceutical composition for treating disorders associated with insulin resistance is disclosed, and the composition comprises at least one inhibitor which is an effective agent to suppress endothelin-1-stimulated resistin gene expression through decreasing the endothelin-1-stimulated phosphorylation of proteins downstream of endothelin type A receptor, wherein the downstream signaling molecules comprise ERK1/2, JNKs, AKT, and STAT3 proteins, and wherein the inhibitor is selected from at least one antagonist of the endothelin type A receptor or downstream signaling proteins.Type: ApplicationFiled: May 21, 2013Publication date: February 12, 2015Inventors: Yung-hsi KAO, Ya-chu Tang, Hsin-huei Chang, Hui-chen Ku
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Publication number: 20140224326Abstract: A photoactive device that includes a photovoltaic device having electrodes and at least one photoactive layer between the electrodes. One or more other layers may be included between the electrodes. The device includes a substrate positioned below the photovoltaic device, and a nanostructure backreflective layer positioned below the substrate such that at least some of the incident light impinging on the photovoltaic device passes through the photovoltaic device and the substrate and is backscattered through the substrate to the photovoltaic device.Type: ApplicationFiled: February 9, 2014Publication date: August 14, 2014Inventors: Pei-Chen Ku, Nanditha Dissanayake, Brian Roberts
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Publication number: 20140206172Abstract: An alignment mark includes a plurality of mark units. Each mark unit includes a first element and a plurality of second elements. Each second element includes opposite first and second end portions. The plurality of second elements are arranged along a direction. The first element extends adjacent to the first end portions of the plurality of second elements and parallel to the direction of the plurality of second elements.Type: ApplicationFiled: March 21, 2014Publication date: July 24, 2014Applicant: NANYA TECHNOLOGY CORPORATIONInventors: CHEN KU CHIANG, YUAN HSUN WU
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Publication number: 20140184033Abstract: A power driving device includes six semiconductor switches and three reverse breakdown diodes. The semiconductor switches has a first end and a second end respectively, and the semiconductor switches are three upper arm semiconductor switches and three lower arm semiconductor switches, wherein end first ends of the upper arm semiconductor switches are electrically connected together, and the second ends electrically connected to each coil of a three-phase coil assembly; the second ends of the lower arm semiconductor switches electrically connected together, and the first ends electrically connected to the second ends of the upper arm semiconductor switches respectively; each diode has an anode and a cathode, wherein the anodes are electrically connected to the second ends of the upper semiconductor switches respectively, and the cathodes are electrically connected to the first ends of the upper arm semiconductor switches respectively.Type: ApplicationFiled: December 19, 2013Publication date: July 3, 2014Applicant: Mobiletron Electronics Co., Ltd.Inventor: Chen-Ku WEI
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Publication number: 20140178898Abstract: A method for detecting fat-reducing compounds comprises four steps, the first step is to provide a clone of adipocytes cultured on a culture dish; the second step is to add a dilution of a test compound to the culture dish for a first time; the third step is to add an insulin-like growth factor to the culture dish for a second time; and the fourth step is to collect the adipocytes for detecting the expression level of at least one specific protein to be a reference value for reducing fat or for decreasing the glucose transport by the test compound. A further method for detecting fat-reducing compounds is disclosed by modifying the last step which detects the levels of a particular protein translocated from the cytosol to the cell membrane of the adipocytes for testing whether the compounds have the ability to regulate or reduce adipocyte glucose uptake.Type: ApplicationFiled: June 25, 2013Publication date: June 26, 2014Inventors: Yung-hsi Kao, Hui-chen Ku, Hsin-huei Chang, Yow-chii Kuo, Yi-wei Tsuei
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Patent number: 8723341Abstract: An alignment mark includes a plurality of mark units. Each mark unit includes a first element and a plurality of second elements. Each second element includes opposite first and second end portions. The plurality of second elements are arranged along a direction. The first element extends adjacent to the first end portions of the plurality of second elements and parallel to the direction of the plurality of second elements.Type: GrantFiled: December 21, 2011Date of Patent: May 13, 2014Assignee: Nan Ya Technology CorporationInventors: Chen Ku Chiang, Yuan Hsun Wu
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Publication number: 20130161841Abstract: An alignment mark includes a plurality of mark units. Each mark unit includes a first element and a plurality of second elements. Each second element includes opposite first and second end portions. The plurality of second elements are arranged along a direction. The first element extends adjacent to the first end portions of the plurality of second elements and parallel to the direction of the plurality of second elements.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: Nan Ya Technology CorporationInventors: Chen Ku CHIANG, Yuan Hsun Wu
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Publication number: 20120262963Abstract: The present invention provides a multi-phase rectifier of an alternator having a plurality of phases, and each of the phases include at least a positive rectifying device and at least a negative rectifying device. The negative rectifying device includes a schottky diode and a diode with reverse breakdown effect in parallel connection. An anode of the schottky diode is connected to the input port and a cathode thereof is connected to a negative terminal of the output port. Therefore, the multi-phase rectifier of the present invention may have a low power loss and protective function in high voltage.Type: ApplicationFiled: April 13, 2011Publication date: October 18, 2012Applicant: MOBILETRON ELECTRONICS CO., LTDInventor: Chen-Ku Wei
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Patent number: 7936140Abstract: The torque control circuit of a hand tool contains a motor driving circuit, a current detection circuit, a reference voltage generation circuit, a current limiting circuit, and a torque configuration circuit. In the last stage of operation of the hand tool and when the average current has reached a predetermined level, the average current is maintained for a period of time to provide a constant average power and therefore to achieve an appropriate tightness of the bolt or nut being operated. The detection and control of current is achieved by a linear circuit which is robust to the heavy noises produced by the motor. A microprocessor is adopted to consider factors such as temperature in determining a suitable current level.Type: GrantFiled: June 9, 2008Date of Patent: May 3, 2011Assignee: Mobiletron Electronics Co., Ltd.Inventor: Chen-Ku Wei
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Patent number: 7839112Abstract: A torque control circuit includes a motor driving circuit, a motor operating current detection circuit, a reference voltage generation circuit, a maximum motor current setting circuit, a torque setting circuit, an information output circuit, a regulated-voltage power supply circuit, a motor operating temperature detection circuit, and a control circuit. The control circuit includes an integrated circuit to carry out functions of reading information detection sources, processing, and instruction for execution of torque control and output terminals of the reference voltage generation circuit, the maximum motor current setting circuit, the motor operating temperature detection circuit, and the motor impedance torque setting circuit are respectively connected to corresponding input terminals of the integrated circuit to carry out desired control of torque supplied to the impact tool.Type: GrantFiled: June 10, 2008Date of Patent: November 23, 2010Assignee: Mobiletron Electronics Co., Ltd.Inventor: Chen-Ku Wei
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Publication number: 20090302798Abstract: A torque control circuit includes a motor driving circuit, a motor operating current detection circuit, a reference voltage generation circuit, a maximum motor current setting circuit, a torque setting circuit, an information output circuit, a regulated-voltage power supply circuit, a motor operating temperature detection circuit, and a control circuit. The control circuit includes an integrated circuit to carry out functions of reading information detection sources, processing, and instruction for execution of torque control and output terminals of the reference voltage generation circuit, the maximum motor current setting circuit, the motor operating temperature detection circuit, and the motor impedance torque setting circuit are respectively connected to corresponding input terminals of the integrated circuit to carry out desired control of torque supplied to the impact tool.Type: ApplicationFiled: June 10, 2008Publication date: December 10, 2009Inventor: CHEN-KU WEI
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Publication number: 20090302794Abstract: The torque control circuit of a hand tool contains a motor driving circuit, a current detection circuit, a reference voltage generation circuit, a current limiting circuit, and a torque configuration circuit. In the last stage of operation of the hand tool and when the average current has reached a predetermined level, the average current is maintained for a period of time to provide a constant average power and therefore to achieve an appropriate tightness of the bolt or nut being operated. The detection and control of current is achieved by a linear circuit which is robust to the heavy noises produced by the motor. A microprocessor is adopted to consider factors such as temperature in determining a suitable current level.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Inventor: Chen-Ku WEI