Patents by Inventor Ya-Chi Chen
Ya-Chi Chen 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: 10555269Abstract: The present invention provides an amplifier circuit, wherein the amplifier circuit includes a DAC, an output stage and a detector. In the operations of the amplifier circuit, the DAC is arranged for performing a digital-to-analog converting operation upon a digital input signal to generate an analog signal, the output stage is arranged for receiving the analog signal to generate an output signal, and the detector is arranged for detecting a characteristic of the input signal, and referring to the characteristic of the input signal to generate at least one control signal to adjust the output stage at a zero-crossing point of the output signal.Type: GrantFiled: September 5, 2018Date of Patent: February 4, 2020Assignee: MEDIATEK INC.Inventors: Sung-Han Wen, Ya-Chi Chen
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Publication number: 20190269996Abstract: The present invention is directed to a leg guard that provides increased protection while also providing maximum articulation and increased freedom of movement for the user. More particularly, the leg guard includes a toe guard, a shin guard, a knee guard including an extended knee cap wrap, an extended knee guard, a thigh guard, a left hinge, and a right hinge. Through the use of an extended knee cap wrap and a hinged configuration, the leg guard provides additional protection for the knees of a catcher and allows catchers to freely and quickly move to or through different stances without having to re-position the pads of the leg guard. The hinged configuration provides enhanced mobility for the user by preventing the leg guard from shifting and rotating about the shin of the user and allowing the leg guard to remain static without axial rotation or vertical movement.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Applicant: Ampac Enterprises Inc.Inventors: Austin Rodrick, Stanley Jurga, JR., Brad Jurga, Ya Chi Chen, Shyan Wei Chen
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Publication number: 20190166566Abstract: The present invention provides an amplifier circuit, wherein the amplifier circuit includes a DAC, an output stage and a detector. In the operations of the amplifier circuit, the DAC is arranged for performing a digital-to-analog converting operation upon a digital input signal to generate an analog signal, the output stage is arranged for receiving the analog signal to generate an output signal, and the detector is arranged for detecting a characteristic of the input signal, and referring to the characteristic of the input signal to generate at least one control signal to adjust the output stage at a zero-crossing point of the output signal.Type: ApplicationFiled: September 5, 2018Publication date: May 30, 2019Inventors: Sung-Han Wen, Ya-Chi Chen
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Patent number: 10293241Abstract: The present invention is directed to a leg guard that provides increased protection while also providing maximum articulation and increased freedom of movement for the user. More particularly, the leg guard includes a toe guard, a shin guard, a knee guard including an extended knee cap wrap, an extended knee guard, a thigh guard, a left hinge, and a right hinge. Through the use of an extended knee cap wrap and a hinged configuration, the leg guard provides additional protection for the knees of a catcher and allows catchers to freely and quickly move to or through different stances without having to re-position the pads of the leg guard. The hinged configuration provides enhanced mobility for the user by preventing the leg guard from shifting and rotating about the shin of the user and allowing the leg guard to remain static without axial rotation or vertical movement.Type: GrantFiled: May 15, 2017Date of Patent: May 21, 2019Assignee: Ampac Enterprises Inc.Inventors: Austin Rodrick, Stanley Jurga, Jr., Brad Jurga, Ya Chi Chen, Shyan Wei Chen
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Patent number: 10249711Abstract: A FET employing a micro-scale device array structure comprises a substrate on which an epitaxial active channel area has been grown, with a plurality of micro-cells uniformly distributed over the active channel area. Each micro-cell comprises a source electrode, a drain electrode, and at least one gate electrode, with a first metal layer interconnecting either the drain or the source electrodes, a second metal layer interconnecting the gate electrodes, and a third metal layer interconnecting the other of the drain or source electrodes. Each micro-cell preferably comprises a source or drain electrode at the center of the micro-cell, with the corresponding drain or source electrode surrounding the center electrode. The number and width of the gate electrodes in each micro-cell may be selected to achieve a desired power density and/or heat distribution, and/or to minimize the FET's junction temperature. The FET structure may be used to form, for example, HEMTs or MESFETs.Type: GrantFiled: June 29, 2017Date of Patent: April 2, 2019Assignee: Teledyne Scientific & Imaging, LLCInventors: Keisuke Shinohara, Miguel Urteaga, Casey King, Avijit Bhunia, Ya-Chi Chen
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Publication number: 20190006464Abstract: A FET employing a micro-scale device array structure comprises a substrate on which an epitaxial active channel area has been grown, with a plurality of micro-cells uniformly distributed over the active channel area. Each micro-cell comprises a source electrode, a drain electrode, and at least one gate electrode, with a first metal layer interconnecting either the drain or the source electrodes, a second metal layer interconnecting the gate electrodes, and a third metal layer interconnecting the other of the drain or source electrodes. Each micro-cell preferably comprises a source or drain electrode at the center of the micro-cell, with the corresponding drain or source electrode surrounding the center electrode. The number and width of the gate electrodes in each micro-cell may be selected to achieve a desired power density and/or heat distribution, and/or to minimize the FET's junction temperature. The FET structure may be used to form, for example, HEMTs or MESFETs.Type: ApplicationFiled: June 29, 2017Publication date: January 3, 2019Inventors: Keisuke Shinohara, Miguel Urteaga, Casey King, Avijit Bhunia, Ya-Chi Chen
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Publication number: 20180326290Abstract: The present invention is directed to a leg guard that provides increased protection while also providing maximum articulation and increased freedom of movement for the user. More particularly, the leg guard includes a toe guard, a shin guard, a knee guard including an extended knee cap wrap, an extended knee guard, a thigh guard, a left hinge, and a right hinge. Through the use of an extended knee cap wrap and a hinged configuration, the leg guard provides additional protection for the knees of a catcher and allows catchers to freely and quickly move to or through different stances without having to re-position the pads of the leg guard. The hinged configuration provides enhanced mobility for the user by preventing the leg guard from shifting and rotating about the shin of the user and allowing the leg guard to remain static without axial rotation or vertical movement.Type: ApplicationFiled: May 15, 2017Publication date: November 15, 2018Applicant: Ampac Enterprises Inc.Inventors: Austin Rodrick, Stanley Jurga, JR., Brad Jurga, Ya Chi Chen, Shyan Wei Chen
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Patent number: 10125795Abstract: An adjustable fan damping apparatus for exerciser includes a casing having an annular chamber defined therein and an annular intake structure is disposed to an inner side of the annular chamber. A centrifugal impeller is rotatably received in the annular chamber. Multiple adjust blades is pivotally mounted onto the annular intake structure and surrounds the annular intake structure, wherein each adjust blade has two pivots longitudinally extending from two opposite ends of the adjust blade and a driven element extending from one side of then adjust blade where the two pivots extends. A drive device is connected to the driven element of each of the multiple adjust blades. The drive device includes a driving element is rotatably coupled with the driven element of each of the multiple adjust blades for simultaneously driving the multiple adjust blades in a same angle relative to the annular intake structure.Type: GrantFiled: November 16, 2016Date of Patent: November 13, 2018Inventor: Ya-Chi Chen
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Patent number: 10065061Abstract: An exercise bike includes a main frame having a seat extending therefrom. A peddle assembly is mounted on the main frame. A rotating damping element is rotatably mounted on the main frame by a second axle. A drive assembly is connected to the peddle assembly and the second axle. An internal gear device is disposed on the rotating damping element and includes a casing, an internal transmission is centrally received in the casing for driving the casing and a drive element connected to the internal transmission for operating the internal transmission. The second axle centrally extends through the internal gear device and the internal transmission is securely sleeved on the second axle, wherein the rotating damping element is securely sleeved on the on the casing. The damping provided to the exercise bike A is adjusted when the drive element of the internal gear device is operated once.Type: GrantFiled: September 7, 2016Date of Patent: September 4, 2018Inventor: Ya-Chi Chen
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Publication number: 20180135655Abstract: An adjustable fan damping apparatus for exerciser includes a casing having an annular chamber defined therein and an annular intake structure is disposed to an inner side of the annular chamber. A centrifugal impeller is rotatably received in the annular chamber. Multiple adjust blades is pivotally mounted onto the annular intake structure and surrounds the annular intake structure, wherein each adjust blade has two pivots longitudinally extending from two opposite ends of the adjust blade and a driven element extending from one side of then adjust blade where the two pivots extends. A drive device is connected to the driven element of each of the multiple adjust blades. The drive device includes a driving element is rotatably coupled with the driven element of each of the multiple adjust blades for simultaneously driving the multiple adjust blades in a same angle relative to the annular intake structure.Type: ApplicationFiled: November 16, 2016Publication date: May 17, 2018Inventor: Ya-Chi CHEN
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Publication number: 20180064982Abstract: An exercise bike includes a main frame having a seat extending therefrom. A peddle assembly is mounted on the main frame. A rotating damping element is rotatably mounted on the main frame by a second axle. A drive assembly is connected to the peddle assembly and the second axle. An internal gear device is disposed on the rotating damping element and includes a casing, an internal transmission is centrally received in the casing for driving the casing and a drive element connected to the internal transmission for operating the internal transmission. The second axle centrally extends through the internal gear device and the internal transmission is securely sleeved on the second axle, wherein the rotating damping element is securely sleeved on the on the casing. The damping provided to the exercise bike A is adjusted when the drive element of the internal gear device is operated once.Type: ApplicationFiled: September 7, 2016Publication date: March 8, 2018Inventor: Ya-Chi CHEN
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Patent number: 9889336Abstract: A chain wheel locking device of an exercise apparatus includes a wheel frame mounted on a main frame of the exercise apparatus, wherein the wheel frame is a U-shaped structure and has two supports corresponding to each other. The exercise apparatus includes a chain wheel axle rotatably extending through a chain wheel and the two supports. The chain wheel axle has two opposite ends each having a locking device mounted thereon for positioning the chain wheel axle and preventing the chain wheel axle from being moved relative to the wheel frame such that a tension of a chain on the chain wheel is maintained to prevent the chain from being detached from the chain wheel.Type: GrantFiled: October 14, 2016Date of Patent: February 13, 2018Inventor: Ya-Chi Chen
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Publication number: 20170224530Abstract: An apparatus and method for treating a head injury including head gear and at least one cooling medium. The cooling medium has a prolonged cooling effect to aid injured persons recovery and health after sustaining a head injury. The apparatus and method is also contemplated for use with headaches, migraines, heat and/or sun stroke, as well as persons that have suffered a stroke.Type: ApplicationFiled: April 26, 2017Publication date: August 10, 2017Applicant: Ampac Enterprises Inc.Inventors: Douglas Farrago, Stan Jurga, JR., Ya-Chi Chen, Austin Rodrick
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Publication number: 20170073426Abstract: A method is provided for determining the efficacy of GPC3-targeting drug therapy for cancer in a patient before the start of GPC3-targeting drug therapy or for determining the continuation of GPC3-targeting drug therapy for a patient treated with GPC3-targeting therapy. The method includes determining the number of an immunocyte or an expression level of a molecule expressed on the immunocyte in a biological sample isolated from the patient before the start of GPC3-targeting drug therapy and/or the patient treated with the GPC3-targeting drug therapy, wherein when the number of the immunocyte or the expression level of the molecule expressed on the immunocyte is a predetermined value, the efficacy of the GPC3-targeting drug therapy is determined or the continuation of the GPC3-targeting drug therapy is determined. GPC3-targeting drugs and drug preparations for use according to the disclosed methods are also provided.Type: ApplicationFiled: May 8, 2015Publication date: March 16, 2017Applicants: Chugai Seiyaku Kabushiki Kaisha, F. Hoffmann-La Roche AGInventors: Toshihiko OHTOMO, Takayoshi TANAKA, Yasuo SUGITANI, Oscar PUIG, Ruey-min LEE, Gong CHEN, Anton BELOUSOV, Ya-Chi CHEN, Bernhard REIS
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Patent number: 9423298Abstract: A laser target board apparatus is provided for detecting spatial and temporal intensity distribution of high energy laser beams. The laser target board apparatus may include a panel having a plurality of openings and a plurality of optical rods placed therein. The laser target board apparatus may further have an optic fiber array positioned substantially parallel to and behind the panel and separated from the panel by a predetermined distance. At least one lens is configured to receive photons emitted from a second end of each optic fiber unit of the optic fiber array, and at least one camera is configured to detect the photons. A processor is configured to analyze temporal and spatial distribution of intensity of the received high energy laser beam based on data generated by the at least one camera.Type: GrantFiled: August 19, 2014Date of Patent: August 23, 2016Assignee: Teledyne Scientific & Imaging, LLCInventors: Dong-Feng Gu, Bruce Winker, Ya-Chi Chen, Milind Mahajan
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Patent number: 9320325Abstract: A belt buckle includes a buckle base having a plurality of raised portions at a base panel thereof for engagement with the bottom wall of the belt, a clamping plate pivotally connected to the buckle base and having a series of teeth for engagement with the top wall of the belt, a frame member pivotally connected to the buckle base, and a prong member pivotally coupled to the frame member.Type: GrantFiled: May 30, 2014Date of Patent: April 26, 2016Assignee: RACER SPORTING GOODS CO., LTD.Inventors: Shyan-Wei Chen, Ya-Chi Chen
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Patent number: D778533Type: GrantFiled: June 23, 2014Date of Patent: February 14, 2017Assignee: RACER SPORTING GOODS CO., LTD.Inventors: Shyan-Wei Chen, Ya-Chi Chen
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Patent number: D852288Type: GrantFiled: April 5, 2018Date of Patent: June 25, 2019Inventor: Ya-Chi Chen
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Patent number: D868383Type: GrantFiled: August 3, 2018Date of Patent: November 26, 2019Assignee: Ampac Enterprises Inc.Inventors: Richard Person, Stan M. Jurga, Jr., Austin Rodrick, Ya Chi Chen
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Patent number: D868384Type: GrantFiled: August 3, 2018Date of Patent: November 26, 2019Assignee: Ampac Enterprises Inc.Inventors: Richard Person, Stan M. Jurga, Jr., Austin Rodrick, Ya Chi Chen