Patents by Inventor Tiegang Liu
Tiegang Liu 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: 20250161031Abstract: The present invention discloses a presettable artificial biological aortic valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3), wherein the valve seat (1) is a one-way limiting expandable annular metal seat; the head end of each seat body unit (4) is sequentially provided with a first rivet (7), a limiting protrusion (6) and a first long circular groove (5) from the outside to the inside; the tail end of each seat body unit (4) is sequentially provided with a second long circular groove (8), a second limiting hole (10) and a first limiting hole (9) matched with the limiting protrusion (6), and a second rivet (11) matched with the first long circular groove (5). The presettable artificial biological aortic valve has an original preset state and a normal use state after one-way limiting expansion.Type: ApplicationFiled: February 15, 2023Publication date: May 22, 2025Applicant: BEIJING BALANCE MEDICAL TECHNOLOGY CO., LTD.Inventors: Lei JIN, Chengxiong GU, Jiangang WANG, Zhihao FAN, Tiegang LIU, Jia WU
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Publication number: 20250143872Abstract: The present invention discloses a one-way limiting expandable artificial heart valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3) wherein the valve seat (1) comprises a one-way limiting expandable annular metal seat (4), the annular metal seat (4) is composed of three sections of seat body units (5), the head end of each section of seat body unit (5) is sequentially provided with a first rivet (8), a limiting protrusion (7) and a first long circular groove (6), the tail end of each section of seat body unit (5) is sequentially provided with a second long circular groove (9), a second limiting hole (11) and a first limiting hole (10), and a second rivet (12), and the artificial heart valve has a normal use original state and a one-way limiting expansion state.Type: ApplicationFiled: February 15, 2023Publication date: May 8, 2025Applicants: BEIJING BALANCE MEDICAL TECHNOLOGY CO., LTD., WEST CHINA HOSPITAL OF SICHUAN UNIVERSITYInventors: Lei JIN, Yingqiang GUO, Zhihao FAN, Tiegang LIU, Jia WU
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Patent number: 9002188Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.Type: GrantFiled: August 1, 2012Date of Patent: April 7, 2015Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Kin Ming Fan, Sio Kuan Lam, Kwok Sing Cheng, Wing Ming Fan, Hua Yang, Tiegang Liu
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Publication number: 20130083231Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.Type: ApplicationFiled: August 1, 2012Publication date: April 4, 2013Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Kin Ming Fan, Sio Kuan Lam, Kwok Sing Cheng, Wing Ming Fan, Hua Yang, Tiegang Liu
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Patent number: 8249440Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.Type: GrantFiled: October 1, 2008Date of Patent: August 21, 2012Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Kin Ming Fan, Sio Kuan Lam, Kwok Sing Cheng, Wing Ming Fan, Hua Yang, Tiegang Liu
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Patent number: 7725014Abstract: There is provided an actuator used in an optical system comprising a housing, a carrier disposed at least partly inside the housing, and a plurality of linear motion transducers coupled to the carrier and substantially evenly spaced around the carrier within the housing. Each linear motion transducer is able to produce linear motion when energized displacing the carrier relative to the housing to produce linear motion, tilting motion, or both of the carrier.Type: GrantFiled: August 29, 2007Date of Patent: May 25, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
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Publication number: 20100080545Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.Type: ApplicationFiled: October 1, 2008Publication date: April 1, 2010Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.Inventors: Kin Ming Fan, Sio Kuan Lam, Kwok Sing Cheng, Wing Ming Fan, Hua Yang, Tiegang Liu
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Publication number: 20090244298Abstract: The invention discloses a imaging device, comprising an imaging module, used for optical to electrical signal conversion, which comprises at least a first imaging unit and a second imaging unit, the first imaging unit used for capturing an image, the second imaging unit used for detecting the movement of the image or the imaging device; a control and processing module, used for controlling the imaging module to output electrical signals, and for processing the electrical signal to generate and to output the motion signal and image signal. The invention also discloses an image capture device which uses the said imaging device. The imaging device can output the motion signal and the image signal simultaneously by adding the second imaging unit used for detecting the movement of the image or the imaging device; consequently better captured image quality can be obtained. Also, the structure can become simpler and the manufacture cost can be lower.Type: ApplicationFiled: March 24, 2009Publication date: October 1, 2009Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Tiegang Liu, Sio Kuan Lam, Wing Ming Fan, Kin Ming Fan, Kwok Sing Cheng
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Publication number: 20090237517Abstract: An optical module, a camera, and a mobile terminal device are provided. The optical module includes a lens unit, a lens driving unit, a driving control unit, and a vibration sensing unit. The vibration sensing unit is configured to detect vibration/shaking of the optical module, the camera, or the mobile terminal device and transmit a detected signal to the driving control unit. The driving control unit generates a corresponding vibration/shaking compensation signal according to the detected signal of the vibration sensor, and performs a vibration/shaking compensation movement by driving the lens with the lens driving unit. The optical module is applied in the camera and the mobile terminal device. The present invention has not only an auto-focusing function, but also an added anti-vibration function, so as to overcome influences on image degradation resulted from vibration/shaking of the optical module, the camera, or the mobile terminal device.Type: ApplicationFiled: March 24, 2009Publication date: September 24, 2009Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Sio Kuan Lam, Kin Ming Fan, Tiegang Liu, Wing Ming Fan
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Publication number: 20090059373Abstract: There is provided an actuator used in an optical system comprising a housing, a carrier disposed at least partly inside the housing, and a plurality of linear motion transducers coupled to the carrier and substantially evenly spaced around the carrier within the housing. Each linear motion transducer is able to produce linear motion when energized displacing the carrier relative to the housing to produce linear motion, tilting motion, or both of the carrier.Type: ApplicationFiled: August 29, 2007Publication date: March 5, 2009Inventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
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Patent number: D1055048Type: GrantFiled: April 24, 2023Date of Patent: December 24, 2024Assignee: Shenzhen Chenxiang Intelligent Technology Co., Ltd.Inventors: Ying Liu, Tiegang Liu, Shien Wang
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Patent number: D1077795Type: GrantFiled: December 6, 2023Date of Patent: June 3, 2025Assignee: Dongguan Chenxiang Intelligent Technology Co., Ltd.Inventors: Ying Liu, Tiegang Liu, Shien Wang
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Patent number: D1077796Type: GrantFiled: December 6, 2023Date of Patent: June 3, 2025Assignee: Dongguan Chenxiang Intelligent Technology Co., Ltd.Inventors: Ying Liu, Tiegang Liu, Shien Wang