Patents by Inventor Yufeng Ma

Yufeng Ma 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: 20190329819
    Abstract: The present application discloses a steering control system, a method and a crane. The steering control system includes: one or more first angle sensors, one or more second angle sensors, and a steering controller; each of the first angle sensors collects an actual steering angle of a wheel corresponding to a mechanical steering axle as a first steering angle; each of the second angle sensors an actual steering angle of a wheel corresponding to an electrically controlled steering axle as a second steering angle; the steering controller obtains a theoretical steering angle of the wheel corresponding to the electrically controlled steering axle in a corresponding travel mode according to the first steering angle, and compares the second steering angle with the theoretical steering angle, to control the wheel corresponding to the electrically controlled steering axle to steer according to a difference therebetween.
    Type: Application
    Filed: December 27, 2016
    Publication date: October 31, 2019
    Inventors: Zenghai SHAN, Jiankai CHEN, Yunwang MA, Zongjia YU, Yufeng ZHAO, Liufu ZHAO, Pengcheng LU
  • Publication number: 20190301982
    Abstract: This is directed to a testing apparatus for measuring property data of a solid, a gas, a liquid. This is particularly directed to a testing device for testing a water system such as a shower, a safety shower, or a fire sprinkler. This is also directed to a testing process for testing a water system such as a shower, a safety shower, or a fire sprinkler.
    Type: Application
    Filed: July 12, 2017
    Publication date: October 3, 2019
    Inventors: Yufeng Bai, Li Ma
  • Publication number: 20190189005
    Abstract: The present invention provides a method for judging a highway abnormal event, which can determine the traffic jam phenomenon in the target road segment based on the trajectory data of each sample vehicle of the target road segment. The solution of the present invention has the following beneficial effects of 1. comprehensively considering the vehicle speed information of the sample vehicles to judge the traffic jam event; 2. determining the overall traffic jam event of the target road segment; 3. more accurately judging the traffic jam event of the target road segment.
    Type: Application
    Filed: March 28, 2018
    Publication date: June 20, 2019
    Applicants: SHANDONG PROVINCIAL COMMUNICATIONS PLANNING AND DESIGN INSTITUTE, TSINGHUA UNIVERSITY
    Inventors: Kai ZHAO, Yufeng BI, Yong LI, Wei LIU, Depeng JIN, Weiling WU, Pengfei ZHOU, Li SU, Zhen TU, Tao MU, Peiyang FANG, Huajun PANG, Chuanyi MA
  • Publication number: 20180198685
    Abstract: Embodiments of the present invention provide a method and apparatus for processing advertisement data, and a storage medium. The method includes: executing the following steps in a browser application: obtaining a jump web page link of delivery data to be loaded, where the jump web page link includes a uniform resource locator of a data delivery platform website and identification information of the delivery data; sending delivery data loading request according to the jump web page link, so as to load and present a web page of the delivery data; detecting a loading completion status of jumping from the jump web page link to an arrival web page link including the identification information; and storing the jump web page link, the arrival web page link, and information about the loading completion status in an association.
    Type: Application
    Filed: December 10, 2015
    Publication date: July 12, 2018
    Inventors: Tao Yu, Jun Ye, Aixuan Xia, Yufeng Ma
  • Patent number: 9891187
    Abstract: Systems that can measure small changes in ion concentrations and method of manufacturing and using those systems. The system includes a substrate, a plurality of multi-walled carbon nanotubes, each multi-walled carbon nanotube from the plurality of multi-walled carbon nanotubes having two ends and a surface extending between the two ends, one of the two ends being disposed on and operatively attached to the substrate, the other of the two ends not being disposed on the substrate, a number of organic molecules; each organic molecule bound to one multi-walled carbon nanotube, each organic molecule also having an end group with affinity for a predetermined ion(s), and a substantially nonconducting polymer deposited on a portion of each multiwalled carbon nanotube, the portion substantially not including locations on each multiwalled carbon nanotube at which each organic molecule is chelated.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: February 13, 2018
    Assignee: POLESTAR TECHNOLOGIES, INC.
    Inventors: Ranganathan Shashidhar, Yufeng Ma, James A. Kane
  • Publication number: 20160377611
    Abstract: Sensing methods are sought to overcome the disadvantages—poor sensitivity and selectivity, poor long-term stability, and undeployable. Sensor of these teachings for detecting and recognizing target molecules includes a layer of molecularly imprinted polymer disposed on a single layer graphene sheet. In some instances, the sensor of these teachings also includes a sensing circuit configured to detect and report impedance changes in a layer of molecularly imprinted polymer disposed on a single layer grapheme sheet, the impedance changes caused by the binding of the target molecules to the molecularly imprinted polymer.
    Type: Application
    Filed: June 29, 2016
    Publication date: December 29, 2016
    Inventors: Yufeng Ma, Anni Siitonen
  • Publication number: 20160178649
    Abstract: Biosensors and sensing methods that overcome the disadvantages, poor chemical, physical and long-term stability, hatch to batch variability and high cost sensor of these teachings for detecting and recognizing target molecules includes a capture and release component and a sensing component. The capture release component includes a structure having molecularly imprinted polymer nanoparticles disposed on the structure, the structure being configured to receive a target fluid having the target molecules, the target molecules being captured by one of a molecularly imprinted polymer or molecularly imprinted polymer nanoparticles, and a source of a release solvent configured to release the target molecules captured by the molecularly imprinted polymer nanoparticles, the release solvent and released target molecules constituting a release solution. The sensing component includes a sensor surface having a layer of molecular imprinted polymer disposed on the sensor surface; and a sensing circuit.
    Type: Application
    Filed: October 16, 2015
    Publication date: June 23, 2016
    Inventors: Ranganathan Shashidhar, Yufeng Ma, James A. Kane
  • Patent number: 9347908
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 24, 2016
    Assignee: Polestar Technologies, Inc.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Publication number: 20130178095
    Abstract: A pH meter and probe with a screw-down connector that converts a standard BNC pH probe connector into an IP67 waterproof connection.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 11, 2013
    Inventors: Devin Sper, Yufeng Ma
  • Patent number: 8480428
    Abstract: A pH meter and probe with a screw-down connector that converts a standard BNC pH probe connector into an IP67 waterproof connection.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 9, 2013
    Inventors: Devin Sper, Yufeng Ma
  • Publication number: 20130092547
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device.
    Type: Application
    Filed: November 5, 2012
    Publication date: April 18, 2013
    Applicant: POLESTAR TECHNOLOGIES, INC.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Patent number: 8313633
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device formed by the process steps of: (a) fabricating using photolithography a pair of metallic electrodes separated by a microscale gap onto a first electrical insulation layer formed on a substrate; (b) applying a second electrical insulation layer on most of a top surface of said pairs of electrodes; (c) depositing additional metallic electrode material onto said electrode pairs using electrochemical deposition, thereby decreasing said microgap to a nano sized gap between said electrode pairs; (d) electrochemically polymerizing in said nanogap conductive monomers containing a target analyte, thereby forming a conducting polymer nanojunction in the gap between electrode pairs; and (e) immersing resultant sensor device in a solution which removes away the target analyte, and intermittently applying a voltage to the conducting polymer while it is immersed in said solution, thereby swelling and shrinking the co
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Polestar Technologies, Inc.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Publication number: 20110024302
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device formed by the process steps of: (a) fabricating using photolithography a pair of metallic electrodes separated by a microscale gap onto a first electrical insulation layer formed on a substrate; (b) applying a second electrical insulation layer on most of a top surface of said pairs of electrodes; (c) depositing additional metallic electrode material onto said electrode pairs using electrochemical deposition, thereby decreasing said microgap to a nano sized gap between said electrode pairs; (d) electrochemically polymerizing in said nanogap conductive monomers containing a target analyte, thereby forming a conducting polymer nanojunction in the gap between electrode pairs; and (e) immersing resultant sensor device in a solution which removes away the target analyte, and intermittently applying a voltage to the conducting polymer while it is immersed in said solution, thereby swelling and shrinking the co
    Type: Application
    Filed: July 28, 2009
    Publication date: February 3, 2011
    Applicant: POLESTAR TECHNOLOGIES, INC.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Patent number: 7871570
    Abstract: The instant application provides a fluidic array device having an elastomeric body that provides easy fluidic control of the device. The elastomeric body may include plurality of intersecting row and column channels. Reactions may occur at the intersection spots formed by the intersecting channels. Pinching applied at suitable locations along the channels enables the channels to be opened or closed, and thus provides control of fluids pumped through the device. The surfaces of the channels and intersection spots may be engineered to have certain properties. In particular, the intersection spots may be nanoengineered to have surface properties differing from those of the channels, and thus reactions may be selectively controlled to occur only, or highly preferentially, in the intersection spots.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: January 18, 2011
    Inventors: Joseph Zhili Huang, Yong Shi, Yufeng Ma
  • Publication number: 20100323918
    Abstract: A method to assemble functional materials, such as nanomaterials, onto a polymer surface to create a corresponding functionalized surface involves creating a solution of the functional material, providing a sacrificial substrate, disposing the functional solution onto a surface of the substrate and then covering the substrate with a liquid polymer. The sacrificial substrate is then dissolved, leaving behind a functional surface embedded within the cured polymer. One specific aspect of the invention relates to the embedding of functionalized carbon nanotubes onto a polymer surface for creating a nano-engineered surface. Devices employing functional surfaces are disclosed that are suitable for the immobilization of enzymes, DNA, peptides, proteins, cells, catalyst, and/or other chemicals or molecules for chemical, biochemical, or biological analysis, reactions, filtration.
    Type: Application
    Filed: February 10, 2009
    Publication date: December 23, 2010
    Applicant: Microdysis, Inc
    Inventors: Joseph Huang, Yufeng Ma, Malcom R. Kahn
  • Publication number: 20080206101
    Abstract: The instant application provides a fluidic array device having an elastomeric body that provides easy fluidic control of the device. The elastomeric body may include plurality of intersecting row and column channels. Reactions may occur at the intersection spots formed by the intersecting channels. Pinching applied at suitable locations along the channels enables the channels to be opened or closed, and thus provides control of fluids pumped through the device. The surfaces of the channels and intersection spots may be engineered to have certain properties. In particular, the intersection spots may be nanoengineered to have surface properties differing from those of the channels, and thus reactions may be selectively controlled to occur only, or highly preferentially, in the intersection spots.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 28, 2008
    Inventors: Joseph Zhili Huang, Yong Shi, Yufeng Ma