Patents by Inventor Liangliang Sun

Liangliang Sun 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: 20230051334
    Abstract: The present invention discloses a method comprising: A. acquiring the current I0 and I, and setting It1, It2, IR, Vmin, and Vmax. B. acquiring the speed V, and setting the speed VL and VH; C. a mowing motor runs in a low-speed mode, and a self-propelled motor runs at the speed VH; D. when encountering grassy areas, if I0<I<It1, keeping unchanged; if I?It1 and lasting for T1, skipping to E; if I=IR, skipping to G; E. the mowing motor switches to the high-speed mode; F. the mowing motor switches to the low-speed mode, V is switched to VH; G the mowing motor switches to the high-speed mode, V is adjusted to VL; H. the mowing motor stops, the self-propelled motors stop, then retreat and work along the original path, after attempting for M times, if the self-propelled motors stop again, bypassing and skipping to C to continue working.
    Type: Application
    Filed: October 25, 2021
    Publication date: February 16, 2023
    Applicant: ZHEJIANG SAFUN INDUSTRIAL CO., LTD.
    Inventors: Jianbing GUO, Jie LI, Linqiang ZHUANG, Feixiang ZHOU, Changda WU, Li HUANG, Liangliang SUN, Yingying SUN, Xinsen YING
  • Patent number: 11056329
    Abstract: An electrokinetically pumped sheath flow nanospray interface for capillary electrophoresis coupled to negative mode electrospray mass spectrometer is described. At this interface, application of an electric field generates electro-osmotic flow at the interior of a glass emitter having an orifice. Electroosmotic flow pumps liquid around the distal tip of the separation capillary, ensheathing analyte into the electrospray electrolyte. In negative ion mode, negative potential applied to an untreated emitter drives sheath flow away from the emitter orifice, decreasing the stability and efficiency of the spray. In contrast, when the interior of the electrospray emitter is grafted with aminoalkylsilanes, the amines have a positive charge, which reverses electroosmosis and generates stable sheath flow to the emitter orifice under negative potential. Limits of detection were about 150 to 900 attomoles injected.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 6, 2021
    Assignee: University of Notre Dame du Lac
    Inventors: Norman Dovichi, Scott Sarver, Nicole Schiavone, Zhenbin Zhang, Liangliang Sun
  • Publication number: 20200273693
    Abstract: An electrokinetically pumped sheath flow nanospray interface for capillary electrophoresis coupled to negative mode electrospray mass spectrometer is described. At this interface, application of an electric field generates electro-osmotic flow at the interior of a glass emitter having an orifice. Electroosmotic flow pumps liquid around the distal tip of the separation capillary, ensheathing analyte into the electrospray electrolyte. In negative ion mode, negative potential applied to an untreated emitter drives sheath flow away from the emitter orifice, decreasing the stability and efficiency of the spray. In contrast, when the interior of the electrospray emitter is grafted with aminoalkylsilanes, the amines have a positive charge, which reverses electroosmosis and generates stable sheath flow to the emitter orifice under negative potential. Limits of detection were about 150 to 900 attomoles injected.
    Type: Application
    Filed: December 30, 2016
    Publication date: August 27, 2020
    Applicant: University of Notre Dame du Lac
    Inventors: Norman DOVICHI, Scott SARVER, Nicole SCHIAVONE, Zhenbin ZHANG, Liangliang SUN
  • Patent number: 10578580
    Abstract: The invention provides a capillary isoelectric focusing (cIEF) system based on a sandwich injection method for automated chemical mobilization. This system was coupled with an electrokinetically pumped nanoelectrospray interface to a mass spectrometer. The nanoelectrospray emitter employed an acidic sheath electrolyte. To realize automated focusing and mobilization, a plug of ammonium hydroxide was first injected into the capillary, followed by a section of mixed sample and ampholyte. As focusing progressed, the NH3H2O section was titrated to lower pH buffer by the acidic sheath buffer. Chemical mobilization started automatically once the ammonium hydroxide was consumed by the acidic sheath flow electrolyte.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: March 3, 2020
    Assignee: University of Notre Dame du Lac
    Inventors: Norman Dovichi, Guijie Zhu, Liangliang Sun
  • Patent number: 10416115
    Abstract: A method of coating the inside wall of a capillary with a polymeric material for capillary electrophoresis is disclosed. The method can include introducing a catalyst-free solution of a monomer and initiator, wherein the monomer is present in about 1-10% (w/v) and the initiator is present in 0.1-1% (w/v), into a capillary and thermally initiating polymerization of the monomer thereby providing a capillary comprising an internal polymeric coating for separating, identifying, and quantifying components of an analyte.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 17, 2019
    Assignee: University of Nortre Dame du Lac
    Inventors: Norman Dovichi, Guijie Zhu, Liangliang Sun
  • Publication number: 20190004010
    Abstract: The invention provides a capillary isoelectric focusing (cIEF) system based on a sandwich injection method for automated chemical mobilization. This system was coupled with an electrokinetically pumped nanoelectrospray interface to a mass spectrometer. The nanoelectrospray emitter employed an acidic sheath electrolyte. To realize automated focusing and mobilization, a plug of ammonium hydroxide was first injected into the capillary, followed by a section of mixed sample and ampholyte. As focusing progressed, the NH3H2O section was titrated to lower pH buffer by the acidic sheath buffer. Chemical mobilization started automatically once the ammonium hydroxide was consumed by the acidic sheath flow electrolyte.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 3, 2019
    Applicant: UNIVERSITY OF NOTRE DAME DU LAC
    Inventors: Norman DOVICHI, Guijie ZHU, Liangliang SUN
  • Publication number: 20170363576
    Abstract: The invention provides a novel method of coating the inside of a capillary with a polymeric material. The method can include introducing a catalyst-free solution of a monomer and initiator, wherein the monomer is present in about 1-10% (w/v) and the initiator is present in 0.1-1% (w/v), into a capillary and thermally initiating polymerization of the monomer thereby providing a capillary comprising an internal polymeric coating for separating, identifying, and quantifying components of an analyte.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 21, 2017
    Applicant: University of Notre Dame du Lac
    Inventors: Norman DOVICHI, Guijie ZHU, Liangliang SUN
  • Patent number: 9465014
    Abstract: The invention provides a sheath-flow interface for producing electrospray from a capillary. The electrospray generated by the interface can be used as the source of ions for mass spectrometry. Electrokinetic flow in the interface can move a sheath liquid past the end of a capillary so as to mix with an analyte effluent discharged from the capillary. The sheath liquid and analyte mixture can be directed to an electrospray emitter to generate an electrospray.
    Type: Grant
    Filed: April 5, 2015
    Date of Patent: October 11, 2016
    Assignee: University of Notre Dame du Lac
    Inventors: Norman Dovichi, Liangliang Sun, Guijie Zhu
  • Patent number: 9362102
    Abstract: The invention provides a sheath-flow interface for producing electrospray from a capillary. The electrospray generated by the interface can be used as the source of ions for mass spectrometry. Electrokinetic flow in the interface can move a sheath liquid past the end of a capillary so as to mix with an analyte effluent discharged from the capillary. The sheath liquid and analyte mixture can be directed to an electrospray emitter to generate an electrospray.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: June 7, 2016
    Assignee: University of Notre Dame du Lac
    Inventors: Norman Dovichi, Liangliang Sun, Guijie Zhu
  • Publication number: 20150311056
    Abstract: The invention provides a sheath-flow interface for producing electrospray from a capillary. The electrospray generated by the interface can be used as the source of ions for mass spectrometry. Electrokinetic flow in the interface can move a sheath liquid past the end of a capillary so as to mix with an analyte effluent discharged from the capillary. The sheath liquid and analyte mixture can be directed to an electrospray emitter to generate an electrospray.
    Type: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Applicant: University of Notre Dame de Lac
    Inventors: Norman Dovichi, Liangliang Sun, Guijie Zhu
  • Publication number: 20150233877
    Abstract: The invention provides a sheath-flow interface for producing electrospray from a capillary. The electrospray generated by the interface can be used as the source of ions for mass spectrometry. Electrokinetic flow in the interface can move a sheath liquid past the end of a capillary so as to mix with an analyte effluent discharged from the capillary. The sheath liquid and analyte mixture can be directed to an electrospray emitter to generate an electrospray.
    Type: Application
    Filed: April 5, 2015
    Publication date: August 20, 2015
    Applicant: UNIVERSITY OF NOTRE DAME DU LAC
    Inventors: Norman Dovichi, Liangliang Sun, Guijie Zhu