Patents by Inventor Lujun Liu

Lujun 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).

  • Patent number: 11573523
    Abstract: Provided is a processing cartridge detachably installed in an imaging device. The processing cartridge includes a first unit and a second unit, and a movable assembly coupled to and receive force from the force applying portion. When the processing cartridge is assembled to the imaging device, the first t and second units can be switched between states of approaching and separating. The movable assembly comprises an installing part and an acting part movable relative to and connectable with each other. The movable assembly is installed in the processing cartridge by the installing part, the acting part is coupled to the force applying portion and receives force from the force applying portion, to force the first and second units to switch between the two states. The acting part is retractable relative to the installing part and comprises an acting block and a guide block guided by the installing part.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: February 7, 2023
    Assignee: TOPJET TECHNOLOGY CO., LTD
    Inventors: Chengchang Wan, Lujun Liu, Huolin Tian, Yijun Wen
  • Publication number: 20220100146
    Abstract: Provided is a processing cartridge detachably installed in an imaging device. The processing cartridge includes a first unit and a second unit, and a movable assembly coupled to and receive force from the force applying portion. When the processing cartridge is assembled to the imaging device, the first t and second units can be switched between states of approaching and separating. The movable assembly comprises an installing part and an acting part movable relative to and connectable with each other. The movable assembly is installed in the processing cartridge by the installing part, the acting part is coupled to the force applying portion and receives force from the force applying portion, to force the first and second units to switch between the two states. The acting part is retractable relative to the installing part and comprises an acting block and a guide block guided by the installing part.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Chengchang WAN, Lujun LIU, Huolin TIAN, Yijun WEN
  • Publication number: 20210296028
    Abstract: Provided is a neodymium-iron-boron magnet, obtained by processing neodymium-iron-boron raw material powders coated with modified powders, wherein the modified powders comprise heavy rare earth element oxide powders and/or heavy rare earth element fluoride powders, specially, heavy rare earth fluoride or oxide powders are used to coat on the surface of the magnetic powders, so that diffusion occurs simultaneously during the subsequent sintering. In addition, during the sintering process, the heavy rare earth oxide or fluoride powders coated on the surface of the magnetic powders substitute part of the light rare earth and the heavy rare earth is absorbed by the magnets, thereby increasing coercive force and effectively inhibiting the reduction of the residual magnetism. In the present disclosure, by using small amount of heavy rare earth element, the coercive force of magnets is increased, which saves rare earth metal sources and production cost.
    Type: Application
    Filed: October 13, 2017
    Publication date: September 23, 2021
    Applicants: JL MAG RARE EARTH CO., LTD., JL MAG RARE EARTH CO., LTD.
    Inventors: Huayun Mao, Lujun Liu, Yijie Zhan
  • Patent number: 9947447
    Abstract: The present invention, on the one hand, provides a neodymium iron boron magnet, comprising neodymium iron boron magnet blank and the RTMH alloy layer compounded on the surface; the R is one or more selected from rare earth elements; the T is Fe and/or Co; the M is one or more selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb and Bi; the H is hydrogen element. By the present invention, the coercive force of magnets is significantly enhanced, and at the same time, the original magnetic remanence and maximum magnetic energy product of the magnets are not significantly reduced.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: April 17, 2018
    Assignee: JL MAG RARE-EARTH CO., LTD.
    Inventors: Huayun Mao, Baogui Cai, Lujun Liu, Jinhong Zhang
  • Publication number: 20170178778
    Abstract: The present invention, on the one hand, provides a neodymium iron boron magnet, comprising neodymium iron boron magnet blank and the RTMH alloy layer compounded on the surface; the R is one or more selected from rare earth elements; the T is Fe and/or Co; the M is one or more selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb and Bi; the H is hydrogen element. By the present invention, the coercive force of magnets is significantly enhanced, and at the same time, the original magnetic remanence and maximum magnetic energy product of the magnets are not significantly reduced.
    Type: Application
    Filed: September 19, 2016
    Publication date: June 22, 2017
    Inventors: Huayun Mao, Baogui Cai, Lujun Liu, Jinhong Zhang