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).

  • Publication number: 20250161031
    Abstract: 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: Application
    Filed: February 15, 2023
    Publication date: May 22, 2025
    Applicant: BEIJING BALANCE MEDICAL TECHNOLOGY CO., LTD.
    Inventors: Lei JIN, Chengxiong GU, Jiangang WANG, Zhihao FAN, Tiegang LIU, Jia WU
  • Publication number: 20250143872
    Abstract: 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: Application
    Filed: February 15, 2023
    Publication date: May 8, 2025
    Applicants: BEIJING BALANCE MEDICAL TECHNOLOGY CO., LTD., WEST CHINA HOSPITAL OF SICHUAN UNIVERSITY
    Inventors: Lei JIN, Yingqiang GUO, Zhihao FAN, Tiegang LIU, Jia WU
  • Patent number: 9002188
    Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 7, 2015
    Assignee: 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
  • Publication number: 20130083231
    Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.
    Type: Application
    Filed: August 1, 2012
    Publication date: April 4, 2013
    Applicant: 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
  • Patent number: 8249440
    Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: August 21, 2012
    Assignee: 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
  • Patent number: 7725014
    Abstract: 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: Grant
    Filed: August 29, 2007
    Date of Patent: May 25, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
  • Publication number: 20100080545
    Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.
    Type: Application
    Filed: October 1, 2008
    Publication date: April 1, 2010
    Applicant: 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
  • Publication number: 20090244298
    Abstract: 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: Application
    Filed: March 24, 2009
    Publication date: October 1, 2009
    Applicant: 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
  • Publication number: 20090237517
    Abstract: 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: Application
    Filed: March 24, 2009
    Publication date: September 24, 2009
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Sio Kuan Lam, Kin Ming Fan, Tiegang Liu, Wing Ming Fan
  • Publication number: 20090059373
    Abstract: 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: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
  • Patent number: D1055048
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: December 24, 2024
    Assignee: Shenzhen Chenxiang Intelligent Technology Co., Ltd.
    Inventors: Ying Liu, Tiegang Liu, Shien Wang
  • Patent number: D1077795
    Type: Grant
    Filed: December 6, 2023
    Date of Patent: June 3, 2025
    Assignee: Dongguan Chenxiang Intelligent Technology Co., Ltd.
    Inventors: Ying Liu, Tiegang Liu, Shien Wang
  • Patent number: D1077796
    Type: Grant
    Filed: December 6, 2023
    Date of Patent: June 3, 2025
    Assignee: Dongguan Chenxiang Intelligent Technology Co., Ltd.
    Inventors: Ying Liu, Tiegang Liu, Shien Wang