Patents by Inventor Yi Dong

Yi Dong 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: 20210050150
    Abstract: Disclosed is a sintered body, a sintered permanent magnet and preparation methods. The sintered body comprises Nd2Fe14B crystal phase as a primary phase and a rare earth rich phase as a grain boundary phase and has a composition expressed by composition formula RaBbGacCudAleMfCogFebalance; R is one or more selected from rare earth elements, and R must comprise Nd; M is one or more selected from the group consisting of Zr, Ti, and Nb; a satisfies 13%?a?15.3%; b satisfies 5.4%?b?5.8%; c satisfies 0.05%?c?0.25%; d satisfies 0.08%?d?0.3%; e satisfies 0?e?1.2%; f satisfies 0.08%?f?0.2%; g satisfies 0.8%?g?2.5%; grains in Nd2Fe14B crystal phase have average size L of 4-8 ?m, grain boundary phases have average thickness t with unit of ?m; the relation of t and L is: ?=t/L; and ? is defined as 0.009???0.012. The present disclosure improves diffusion efficiency of heavy rare earth elements RH.
    Type: Application
    Filed: March 17, 2020
    Publication date: February 18, 2021
    Applicant: Baotou Tianhe Magnetics Technology Co., Ltd.
    Inventors: Suo Bai, Shujie Wu, Yi Dong, Zhimin Wu, Shuai Zhang, Bo Yuan, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 10867727
    Abstract: The present invention provides a rare earth permanent magnet material and manufacturing method thereof. The manufacturing method of the present invention comprises a multi-arc ion plating step and a infiltrating step, wherein multi-arc ion plating process is adopted to deposit a metal containing a heavy rare earth element on a surface of a sintered neodymium-iron-boron magnet which has a thickness of 10 mm or less in at least one direction; and then heat treatment is performed on the sintered neodymium-iron-boron after deposition. The sum of an intrinsic coercive force (Hcj, in unit of kOe) and a maximum magnetic energy product ((BH)max, in unit of MGOe) of the permanent magnet material of the present invention is 66.8 or more. Moreover, the manufacturing method of the present invention has high production efficiency and does not increase harmful substances, and the price of devices is relatively low.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: December 15, 2020
    Inventors: Yi Dong, Shulin Diao, Haibo Yi, Shujie Wu, Zhanjiang Hu, Qian Zhang, Gazhen Liu, Juchang Miao, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 10852310
    Abstract: Fluidic devices and methods involving incubation and/or mixing of assay components are provided. In some embodiments, a biological and/or chemical assay may be performed in a fluidic device. The fluidic device may be designed to allow for controlled incubation and/or mixing of two or more assay components. In some such embodiments, the fluidic device may comprise an incubation channel having a relatively large cross-sectional dimension in fluid communication with a detection channel. The incubation channel may allow for adequate mixing and/or incubation of two or more assay components prior to analysis of the assay. In some embodiments, fluidic devices for performing a vitamin D assay are provided.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 1, 2020
    Assignee: OPKO Diagnostics, LLC
    Inventors: Douglas M. Haddad, Gary J. Fagan, Yi Dong, Matthew Dirckx, Vincent Linder
  • Patent number: 10822749
    Abstract: A reinforcing fabric includes at least one glass fiber, wherein the at least one glass fiber includes a binder, the binder including a polymer resin and a filler, the filler including a recycled asphalt shingle. A method of reinforcing pavement with the aforementioned reinforcing fabric can be applied to new and existing pavements.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: November 3, 2020
    Assignee: SAINT-GOBAIN ADFORS CANADA, LTD.
    Inventors: Jie-yi Dong, Ashley Smith, Gabor F. Nagy, Daniel L. Hunt, Tao Yu
  • Publication number: 20200284697
    Abstract: The disclosure provides a method for sampling groundwater. The method includes extracting groundwater from a monitoring well in a first flow rate; monitoring groundwater level in real-time, and calculating a decrease of the groundwater level during the extracting in the first flow rate based on the real-time monitored groundwater level; when the decrease of the groundwater level is equal to a first value, extracting groundwater from the monitoring well in a second flow rate, the second flow rate being smaller than the first flow rate; and when the groundwater level is in an equilibration state, extracting groundwater from the monitoring well and using the extracted groundwater at this time as a representative groundwater.
    Type: Application
    Filed: March 2, 2020
    Publication date: September 10, 2020
    Applicant: Tsinghua University
    Inventors: DE-YI HOU, YI-DONG WANG, GUANG-HE LI, XU ZHANG, FANG ZHANG
  • Publication number: 20200243233
    Abstract: The present invention provides a samarium-cobalt magnet and a method for preparing the same. The method comprises mixing an alloy powder with a zirconium powder in an amount of 0.1-0.35 wt % of the weight of the alloy powder to form a mixture. The alloy powder is formed from 10.5-13.5 wt % of samarium, 12.5-15.5 wt % gadolinium, 50-55 wt % of cobalt, 13-17 wt % of iron, 4-10 wt % of copper, and 2-7 wt % of zirconium. The method brings about at low costs a samarium-cobalt magnet having a positive temperature coefficient of remanence.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 30, 2020
    Applicant: Baotou Tianhe Magnetics Technology Co., Ltd.
    Inventors: Bingjun Zhang, Yi Dong, Zhimin Wu, Shulin Diao, Xin Liu, Jianyun Su, Yuelin Fan, Bo Yuan, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 10381140
    Abstract: The present invention provides a method for preparing a rare earth permanent magnet material. The preparation method of the present invention comprises atomizing spray process and infiltrating process, wherein the atomizing-sprayed sintered rare earth magnet is placed in a closed container before infiltrating. Through the atomizing spray process a solution containing a heavy rare earth element is coated on the surface of a sintered R1-Fe(Co)—B-A-X-M rare earth magnet, and after baking, heat treatment is performed to infiltrate the sprayed heavy rare earth element to the grain boundary phase of the sintered rare earth magnet. This method decreases the amount of a heavy rare earth element used, increases the coercive force of magnets with a little decrease of remanence, decreases the remanence temperature coefficient and coercive force temperature coefficient of the magnet, and improves resistance of the magnet against demagnetization at a high temperature.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: August 13, 2019
    Assignee: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Shulin Diao, Yi Dong, Haibo Yi, Yuelin Fan, Juchang Miao, Shujie Wu, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 10365081
    Abstract: A checking tool for measuring a distance between adjacent sinking grooves in an inner hole of a mechanical part, including: a gage block, end cover, sliding piece, pin, base, pin seat, support, measuring rod, spring, barrel, and dial indicator. An inner end face of the base is provided with the sliding piece, at least three concentric circular arc grooves are on the end face, paired eccentric arc grooves are on the sliding piece, the pin connected to the pin seat runs through the base and sliding piece, which is axially limited by the end cover, and the seat rotates relative to the base to realize radial expansion displacement of the sliding piece. A measuring head is formed by the dial indicator, measuring rod, spring and barrel. By positioning the edges of adjacent sinking grooves in an inner hole, measurement for a distance between the grooves is converted into depth measurement.
    Type: Grant
    Filed: September 25, 2016
    Date of Patent: July 30, 2019
    Assignees: PACIFIC PRECISION FORGING CO., LTD., PACIFIC PRECISION POWERTRAIN CO., LTD.
    Inventors: Hanguan Xia, Jun Qin, Hongjun Zhao, Yi Dong, Yong Zhang
  • Publication number: 20190169802
    Abstract: A reinforcing fabric is provided. The reinforcing fabric includes at least one glass fiber, wherein the at least one glass fiber includes a binder, the binder including a polymer resin and a filler, the filler including a recycled asphalt shingle. Further included is a method of reinforcing pavement with the aforementioned reinforcing fabric.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 6, 2019
    Inventors: Jie-yi DONG, Ashley SMITH, Gabor F. NAGY, Daniel L. HUNT, Tao YU
  • Patent number: 10275359
    Abstract: The present disclosure provides a cache cleaning method, a cache cleaning apparatus and a client, which improves a cache cleaning efficiency in a client and improves a user experience effectively. The method includes: detecting an amount of used caches in a mobile terminal; if the amount of used caches is larger than a preset threshold, sending a cache application request to an operating system of the mobile terminal so as to trigger a preset cache release rule in the operating system; and after the operating system releases corresponding caches according to the preset cache release rule, sending a cache release request to the operating system such that the operating system releases caches allocated for the cache application request according to the cache release request. The present disclosure may be used in a cache management technique of a mobile terminal.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: April 30, 2019
    Assignee: SHELL INTERNET (BEIJING) SECURITY TECHNOLOGY CO., LTD.
    Inventors: Yi Dong, Hang Wei, Dingpan Li, Jian Ma
  • Patent number: 10269488
    Abstract: The present invention provides a method for preparing a permanent magnet material, the method comprising coating step and infiltrating step, wherein, coating a rare earth element-containing substance on the surface of a permanent magnet, the magnet having a thickness of 10 mm or less at least in one direction, then placing the magnet into a container, vacuuming to an atmospheric pressure of below 10 Pa, closing the passageway, and then heat treating the closed container. Using the method of the present invention enables the rare earth element to infiltrate homogeneously with a high permeability. In addition, the present invention may have a lower production cost, significantly increase coercive force of the permanent magnet material, but decrease the remanence very little.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: April 23, 2019
    Assignee: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Haibo Yi, Yi Dong, Shulin Diao, Yi Yuan, Shujie Wu, Cailing Sun, Juchang Miao, Ya Chen, Wenjie Yuan
  • Patent number: 10138540
    Abstract: An infiltration device comprises a heating room, a rotary tray, a rotary bracket, a material box, an elevating mechanism and a transmission device, wherein the heating room has an annular groove, and the rotary tray is arranged below an opening end at a lower end of the heating room; the rotary bracket is installed on the rotary tray; the material box is arranged on the rotary bracket; the rotary tray and the material box can move upward and downward under the action of the elevating mechanism; the rotary bracket can spin in the annular groove and revolve around a central axis of the rotary tray under the action of the transmission device. The infiltration method provided by the invention comprises the steps of charging, vacuum-pumping, high temperature infiltrating, cooling, discharging, etc.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: November 27, 2018
    Assignee: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Juchang Miao, Yong Zhai, Jianxin Ma, Enfeng Gao, Yanling Song, Shulin Diao, Yi Dong, Haibo Yi, Shujie Wu, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 10109401
    Abstract: The present invention provides a method for improving coercive force of magnets, this method comprises steps as follows: S2) coating step: coating a coating material on the surface of a magnet and drying it; and S3) infiltrating step: heat treating the magnet obtained from the coating step S2). The coating material comprises (1) metal calcium particles and (2) particles of a material containing a rare earth element; the rare earth element is at least one selected from Praseodymium, Neodymium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium and Lutetium. The method of the present invention can significantly increase coercive force of a permanent magnet material, while remanence and magnetic energy product hardly decrease. In addition, the method of the present invention can significantly decrease the amount of a rare earth element, and accordingly, decrease the production cost.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 23, 2018
    Assignee: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Shujie Wu, Yi Dong, Shulin Diao, Haibo Yi, Yichuan Wang, Zhanjiang Hu, Juchang Miao, Yi Yuan, Ya Chen, Wenjie Yuan
  • Publication number: 20180226189
    Abstract: The disclosure discloses a method for preparing a permanent magnet material. In this method, an ionic liquid electroplating process is used to electroplate a heavy rare earth metal onto a surface of a sintered magnet to form a magnet with a coating, wherein the sintered magnet has a thickness of 10 mm or less in at least one direction; in the ionic liquid electroplating process, an electroplating solution comprises an ionic liquid, a heavy rare earth salt, a group VIII metal salt, an alkali metal salt and an additive, an anode is a heavy rare earth metal or a heavy rare earth alloy, a cathode is the sintered magnet, an electroplating temperature is 20-50° C., an electroplating time is 15-80 min. The preparation method of the disclosure can improve an intrinsic coercive force of the magnet with low cost and high production efficiency. A utilization rate of heavy rare earth is high.
    Type: Application
    Filed: December 14, 2017
    Publication date: August 9, 2018
    Applicant: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Shujie Wu, Yi Dong, Shulin Diao, Shuai Zhang, Yi Yuan, Ya Chen, Wenjie Yuan
  • Publication number: 20180188014
    Abstract: A checking tool for measuring a distance between adjacent sinking grooves in an inner hole of a mechanical part, including: a gage block, end cover, sliding piece, pin, base, pin seat, support, measuring rod, spring, barrel, and dial indicator. An inner end face of the base is provided with the sliding piece, at least three concentric circular arc grooves are on the end face, paired eccentric arc grooves are on the sliding piece, the pin connected to the pin seat runs through the base and sliding piece, which is axially limited by the end cover, and the seat rotates relative to the base to realize radial expansion displacement of the sliding piece. A measuring head is formed by the dial indicator, measuring rod, spring and barrel. By positioning the edges of adjacent sinking grooves in an inner hole, measurement for a distance between the grooves is converted into depth measurement.
    Type: Application
    Filed: September 25, 2016
    Publication date: July 5, 2018
    Applicants: PACIFIC PRECISION FORGING CO., LTD., PACIFIC PRECISION POWERTRAIN CO., LTD.
    Inventors: Hanguan XIA, Jun QIN, Hongjun ZHAO, Yi DONG, Yong ZHANG
  • Patent number: 9889474
    Abstract: A spraying device comprises: a conveyer comprising a mesh crawler belt configured to carry an object to be sprayed; a baking chamber for heating the object to be sprayed; a spraying chamber having at least one atomizing nozzle disposed within the spraying chamber, the atomizing nozzle being configured to uniformly spray a coating solution on a surface of the object to be sprayed; a cleaning chamber for cleaning the mesh crawler belt and recycling the coating solution carried by the mesh crawler belt; and a solution storage apparatus for storing the coating solution that the spraying chamber needs for spraying; wherein the mesh crawler belt passes successively through the baking chamber, the spraying chamber and the cleaning chamber. The device of the present invention can ensure uniformity of the thickness of a coating layer on the magnet. In addition, the device can improve spraying efficiency and save raw material.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: February 13, 2018
    Assignee: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.
    Inventors: Juchang Miao, Yong Zhai, Jianxin Ma, Enfeng Gao, Yanling Song, Shulin Diao, Yi Dong, Haibo Yi, Shujie Wu, Yi Yuan, Ya Chen, Wenjie Yuan
  • Patent number: 9743497
    Abstract: A wireless load control system is provided including one or more wireless switch components and one or more load controller components optionally in one-to-one, many-to-many, many-to-one, and one-to-many wireless communication with each other. A wirelessly-controlled load controller assembly includes an enclosure adapted to fit within a junction box, the enclosure comprising a projecting fitting adapted to fit through an aperture of the junction box to maintain the enclosure in fixed relation to the junction box. A control circuit in the enclosure is provided with an antenna that extends through an antenna port that is disposed within the fitting so that when the load controller is mounted in a junction box, the antenna extends through the aperture of the junction box.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: August 22, 2017
    Assignee: Levven Automation Inc.
    Inventors: James Keirstead, Jim Qualie, Yi Dong
  • Patent number: D791209
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: July 4, 2017
    Inventors: Yi Dong, Nick Cronan
  • Patent number: D852839
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: July 2, 2019
    Inventors: Datao Zhang, Yi Dong
  • Patent number: D888305
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: June 23, 2020
    Inventor: Yi-Dong Yu