Patents by Inventor Shengtao Li

Shengtao Li 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).

  • Patent number: 11854718
    Abstract: The present invention discloses a preparation method of an insulating dielectric for improving energy density, including dissolving 1,4-phenylene diisothiocyanate in a polar solvent, then adding an organic diamine, and reacting at room temperature for 3 h to 6 h under a nitrogen atmosphere; then adding 4,4?-oxydianiline and pyromellitic dianhydride, and reacting at room temperature for 12 h to 18 h under a nitrogen atmosphere to obtain a random copolymer solution of polythiourea and polyamic acid; and spreading the random copolymer solution of polythiourea and polyamic acid on a copper plate, and carrying out gradient temperature elevation to obtain a random copolymer of polythiourea and polyimide.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: December 26, 2023
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Yang Feng, Anqi Yang, Shengtao Li, Liuqing Yang
  • Publication number: 20210166833
    Abstract: The present invention discloses a preparation method of an insulating dielectric for improving energy density, including dissolving 1,4-phenylene diisothiocyanate in a polar solvent, then adding an organic diamine, and reacting at room temperature for 3 h to 6 h under a nitrogen atmosphere; then adding 4,4?-oxydianiline and pyromellitic dianhydride, and reacting at room temperature for 12 h to 18 h under a nitrogen atmosphere to obtain a random copolymer solution of polythiourea and polyamic acid; and spreading the random copolymer solution of polythiourea and polyamic acid on a copper plate, and carrying out gradient temperature elevation to obtain a random copolymer of polythiourea and polyimide.
    Type: Application
    Filed: September 29, 2020
    Publication date: June 3, 2021
    Inventors: Yang FENG, Anqi YANG, Shengtao LI, Liuqing YANG
  • Patent number: 9849238
    Abstract: Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made during a “priming” stage when liquid is pumped through the internal fluid path but does not exit the pump.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 26, 2017
    Assignee: MINIPUMPS, LLC
    Inventors: Po-Ying Li, Shengtao Li, Jonathan K. Lee, Patrick Ryan, Alice Lai, Sean Caffey, Mark S. Humayun
  • Patent number: 9333297
    Abstract: Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made based on the flow “tail” that occurs in a piston- or plunger-type pump as relaxation of the plunger material continues to push fluid out of the drug reservoir; this residual flow eventually ceases after the plunger returns to its natural state.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 10, 2016
    Assignee: MiniPumps, LLC
    Inventors: Po-Ying Li, Shengtao Li, Jonathan K. Lee, Patrick Ryan, Alice Lai, Sean Caffey, Mark S. Humayun
  • Publication number: 20140094770
    Abstract: Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made during a “priming” stage when liquid is pumped through the internal fluid path but does not exit the pump.
    Type: Application
    Filed: September 24, 2013
    Publication date: April 3, 2014
    Inventors: Po-Ying Li, Shengtao Li, Jonathan K. Lee, Patrick Ryan, Alice Lai, Sean Caffey, Mark S. Humayun
  • Publication number: 20140094771
    Abstract: Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made based on the flow “tail” that occurs in a piston- or plunger-type pump as relaxation of the plunger material continues to push fluid out of the drug reservoir; this residual flow eventually ceases after the plunger returns to its natural state.
    Type: Application
    Filed: September 24, 2013
    Publication date: April 3, 2014
    Inventors: Po-Ying Li, Shengtao Li, Jonathan K. Lee, Patrick Ryan, Alice Lai, Sean Caffey, Mark S. Humayun
  • Publication number: 20140088555
    Abstract: Drug-delivery devices may utilize electrolysis pumps to push a plunger so as to deliver drug from a reservoir. The volume and/or rate of drug delivery may be monitored based on pressure measurements in the pump chamber. Pressure signatures characteristic of end-of-dose and occlusion events may be used to detect when plunger movement stops.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 27, 2014
    Inventors: Po-Ying Li, Patrick Ryan, Shengtao Li, Jonathan K. Lee, Alice Lai, Sean Caffey, Yu-Chong Tai
  • Publication number: 20140088554
    Abstract: Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. Depending on the mode of operation, fluid may be dispensed continuously or in discrete pulses, and the manner of adjustment or calibration may be tailored to the operational mode in use.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 27, 2014
    Inventors: Po-Ying Li, Shengtao Li, Jonathan K. Lee, Patrick Ryan, Alice Lai, Sean Caffey, Mark S. Humayun