Patents by Inventor Yubin Liu

Yubin 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).

  • Crystal form of prostaglandin analogue, and preparation method and use thereof
    Patent number: 9278902
    Abstract: Provided are a crystal form B of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form B has characteristic peaks at the following diffraction angles: 2.9±0.2°, 6.5±0.2°, 12.6±0.2°, 13.1±0.2° and 20.6±0.2°.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 8, 2016
    Assignee: Shanghai Techwell Biopharmaceutical Co., Ltd.
    Inventors: Zhijun Tang, Yubin Liu, Bingming He, Jun Yang, Xiaoming Ji
  • Crystal form of prostaglandin analogue, and preparation method and use thereof
    Patent number: 9278903
    Abstract: Provided are a crystal form A of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form A has characteristic peaks at the following diffraction angles: 2.9±0.2°, 13.6±0.2°, 17.3±0.2° and 18.6±0.2°.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 8, 2016
    Assignee: Shanghai Techwell Biopharmaceutical Co., Ltd.
    Inventors: Zhijun Tang, Yubin Liu, Bingming He, Jun Yang, Xiaoming Ji
  • CRYSTAL FORM OF PROSTAGLANDIN ANALOGUE, AND PREPARATION METHOD AND USE THEREOF
    Publication number: 20150011637
    Abstract: Provided are a crystal form B of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form B has characteristic peaks at the following diffraction angles: 2.9±0.2°, 6.5±0.2°, 12.6±0.2°, 13.1±0.2° and 20.6±0.2°.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 8, 2015
    Inventors: Zhijun Tang, Yubin Liu, Bingming He, Jun Yang, Xiaoming Ji
  • CRYSTAL FORM OF PROSTAGLANDIN ANALOGUE, AND PREPARATION METHOD AND USE THEREOF
    Publication number: 20150005384
    Abstract: Provided are a crystal form A of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form A has characteristic peaks at the following diffraction angles: 2.9±0.2°, 13.6±0.2°, 17.3±0.2° and 18.6±0.2°.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 1, 2015
    Inventors: Zhijun Tang, Yubin Liu, Bingming He, Jun Yang, Xiaoming Ji
  • BACKWARD PEDALING DETECTION CIRCUIT FOR E-BIKE MOTOR DRIVER
    Publication number: 20090102408
    Abstract: A backward pedaling detection circuit has a charging/discharging circuit for charging and discharging the external capacitor to meet the threshold voltage required by the hysteresis comparator, based on the input from the hall sensor. An internal pull-down circuit, based on the pedal speed, keeps the circuit from false triggering. A comparator with hysteresis (Schmitt trigger) sets the upper and lower threshold voltage and eliminates the effect of noise. AND gates act like switches to allow the selected signal to pass through.
    Type: Application
    Filed: October 18, 2007
    Publication date: April 23, 2009
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., PANASONIC SEMICONDUCTOR ASIA PTE., LTD.
    Inventors: Allan Candelaria DE JESUS, Yubin LIU, Tien Yew KANG, Kian Teck TEO
  • Electric power-assist system for manually-operated vehicle
    Patent number: 7411366
    Abstract: An electric power-assist system for a manually operated vehicle, such as a bicycle, has a pedal with Hall sensors for producing a signal representing a rotational speed of the pedal, and an electric motor for power assisting the driving force of the bicycle. A speed counter, speed decision block, up/down counter, and comparator are provided so that the power assist by the electric motor increases or degreases, as the speed of the manual controlling device increases or decreases, respectively.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: August 12, 2008
    Assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Tien Yew Kang, Kian Teck Teo, Yubin Liu
  • Electric motor speed controller for vehicle
    Patent number: 7411368
    Abstract: An electric motor speed controller for use in a bicycle includes a motor to provide a propulsion force to move the bicycle. The actual motor speed and a target motor speed are compared, and if the actual motor speed is lower, more current is supplied to the motor, and if the actual motor speed is higher, less current is supplied to the motor.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: August 12, 2008
    Assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Tien Yew Kang, Kian Teck Teo, Yubin Liu
  • MOTOR DRIVER CONTROLLER FOR ELECTRIC BICYCLE
    Publication number: 20080177433
    Abstract: A motor driver controller for controlling a motor equipped in an electric bicycle includes a power supply block for supplying power to the motor, a mode select block for selecting a mode between pedal assist mode and throttle/cruise mode. The pedal assist mode is controlled by a pedal assist block which detects the bicycle pedal speed. The throttle/cruise mode is controlled by a voltage track-and-follow block which produces a signal indicating the power to be supplied to the motor from the power supply block.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 24, 2008
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., PANASONIC SEMICONDUCTOR ASIA PTE., LTD.
    Inventors: Kian Teck TEO, Yubin LIU
  • ELECTRIC MOTOR SPEED CONTROLLER FOR VEHICLE
    Publication number: 20080112694
    Abstract: An electric motor speed controller for use in a bicycle includes a motor to provide a propulsion force to move the bicycle. The actual motor speed and a target motor speed are compared, and if the actual motor speed is lower, more current is supplied to the motor, and if the actual motor speed is higher, less current is supplied to the motor.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 15, 2008
    Applicants: Matsushita Electric Industrial Co. Ltd., Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Tien Yew Kang, Kian Teck Teo, Yubin Liu
  • ELECTRIC POWER-ASSIST SYSTEM FOR MANUALLY-OPERATED VEHICLE
    Publication number: 20080111511
    Abstract: An electric power-assist system for a manually operated vehicle, such as a bicycle, has a pedal with Hall sensors for producing a signal representing a rotational speed of the pedal, and an electric motor for power assisting the driving force of the bicycle. A speed counter, speed decision block, up/down counter, and comparator are provided so that the power assist by the electric motor increases or degreases, as the speed of the manual controlling device increases or decreases, respectively.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 15, 2008
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD., PANASONIC SEMICONDUCTOR ASIA PTE. LTD.
    Inventors: Tien Yew KANG, Kian Teck TEO, Yubin LIU
  • Case for mobile phone
    Patent number: D1028957
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 28, 2024
    Assignee: SHENZHEN LANHE TECHNOLOGIES CO., LTD.
    Inventors: Yubin Liu, Wei Wei, Yibin Lan