Patents by Inventor Xiaohua Lou

Xiaohua Lou 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: 20240317504
    Abstract: This application provides a load-bearing support plate, chain structure, and a conveyor belt structure incorporating them, the load-bearing support plate comprises a first panel, a second panel, and a transition panel for connecting the first panel with the second panel; the first panel is offset in a first direction relative to the second panel, at least one reinforcing rib provided on the first panel, the reinforcing rib extending upwards from the bottom of the first panel to the upper edge of the first panel and forming a bearing surface with the top surface of the first panel. By forming the first panel into a curved shape with the use of reinforcing ribs, the overall support capability is enhanced. Also, by extending the reinforcing ribs to the upper edge of the first panel, the upper edge of the support plate below becomes curved, offering a larger contact area in the thickness direction, thereby improving the stability of the spiral stacking motion.
    Type: Application
    Filed: March 18, 2024
    Publication date: September 26, 2024
    Applicant: Square Technology Group Co., Ltd
    Inventors: Xiaoyan YANG, Xiaohua LOU, Pu CHEN, Zhong PU, Wenbo AI, Yafei SHAN
  • Patent number: 11451012
    Abstract: A vertical cavity surface emitting laser (VCSEL) array may comprise a first subset of VCSELs of a plurality of VCSELs, and a second subset of VCSELs of the plurality of VCSELs. One or more first beams to be emitted by the first subset of VCSELs, when the VCSEL array is powered, and one or more second beams to be emitted by the second subset of VCSELs, when the VCSEL array is powered, may have different patterns of areas of energy intensity. The different patterns of areas of energy intensity may include respective areas of high energy intensity and respective areas of low energy intensity.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: September 20, 2022
    Assignee: Lumentum Operations LLC
    Inventors: Xiaohua Lou, Delai Zhou, Hery Djie
  • Publication number: 20210066892
    Abstract: A vertical cavity surface emitting laser (VCSEL) array may comprise a first subset of VCSELs of a plurality of VCSELs, and a second subset of VCSELs of the plurality of VCSELs. One or more first beams to be emitted by the first subset of VCSELs, when the VCSEL array is powered, and one or more second beams to be emitted by the second subset of VCSELs, when the VCSEL array is powered, may have different patterns of areas of energy intensity. The different patterns of areas of energy intensity may include respective areas of high energy intensity and respective areas of low energy intensity.
    Type: Application
    Filed: November 11, 2020
    Publication date: March 4, 2021
    Inventors: Xiaohua LOU, Delai ZHOU, Hery DJIE
  • Patent number: 10840675
    Abstract: A vertical cavity surface emitting laser (VCSEL) array may comprise a first subset of VCSELs of a plurality of VCSELs, and a second subset of VCSELs of the plurality of VCSELs. One or more first beams to be emitted by the first subset of VCSELs, when the VCSEL array is powered, and one or more second beams to be emitted by the second subset of VCSELs, when the VCSEL array is powered, may have different patterns of areas of energy intensity. The different patterns of areas of energy intensity may include respective areas of high energy intensity and respective areas of low energy intensity.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 17, 2020
    Assignee: Lumentum Operations LLC
    Inventors: Xiaohua Lou, Delai Zhou, Hery Djie
  • Publication number: 20190267778
    Abstract: A vertical cavity surface emitting laser (VCSEL) array may comprise a first subset of VCSELs of a plurality of VCSELs, and a second subset of VCSELs of the plurality of VCSELs. One or more first beams to be emitted by the first subset of VCSELs, when the VCSEL array is powered, and one or more second beams to be emitted by the second subset of VCSELs, when the VCSEL array is powered, may have different patterns of areas of energy intensity. The different patterns of areas of energy intensity may include respective areas of high energy intensity and respective areas of low energy intensity.
    Type: Application
    Filed: November 28, 2018
    Publication date: August 29, 2019
    Inventors: Xiaohua LOU, Delai ZHOU, Hery DJIE
  • Patent number: 9245554
    Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and ABS surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser. Variations of the disclosure include tilting the plasmon generator, the waveguide and the laser diode.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 26, 2016
    Assignee: Headway Technologies, Inc.
    Inventors: Xuhui Jin, Xiaohua Lou, Joe Smyth, Moris Dovek
  • Publication number: 20150109893
    Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and ABS surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser. Variations of the disclosure include tilting the plasmon generator, the waveguide and the laser diode.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 23, 2015
    Inventors: Xuhui Jin, Xiaohua Lou, Joe Smyth, Moris Dovek
  • Patent number: 8923098
    Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and ABS surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser. Variations of the disclosure include tilting the plasmon generator, the waveguide and the laser diode.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 30, 2014
    Assignee: Headway Technologies, Inc.
    Inventors: Xuhui Jin, Xiaohua Lou, Joe Smyth, Moris Dovek
  • Patent number: 8860157
    Abstract: An apparatus and associated method for a non-volatile memory cell with a phonon-blocking insulating layer. In accordance with various embodiments, a magnetic stack has a tunnel junction, ferromagnetic free layer, pinned layer, and an insulating layer that is constructed of an electrically and thermally insulative material that blocks phonons while allowing electrical transmission through at least one conductive feature.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 14, 2014
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Xiaohua Lou, Wei Tian, Zheng Gao, Haiwen Xi
  • Publication number: 20140241137
    Abstract: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and ABS surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser. Variations of the disclosure include tilting the plasmon generator, the waveguide and the laser diode.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: Headway Technologies, Inc.
    Inventors: Xuhui Jin, Xiaohua Lou, Joe Smyth, Moris Dovek
  • Patent number: 8750036
    Abstract: A memory unit includes a magnetic tunnel junction data cell electrically coupled to a bit line and a word line. The magnetic tunnel junction data cell is configured to switch between a high resistance state and a low resistance state by passing a unipolar voltage across the magnetic tunnel junction data cell. A diode is electrically coupled between the magnetic tunnel junction data cell and the word line or bit line. A voltage source provides the unipolar voltage across the magnetic tunnel junction data cell that writes the high resistance state and the low resistance state.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: June 10, 2014
    Assignee: Seagate Technology, LLC
    Inventors: Xiaohua Lou, Haiwen Xi
  • Patent number: 8686524
    Abstract: A magnetic stack having a ferromagnetic free layer, a metal oxide layer that is antiferromagnetic at a first temperature and non-magnetic at a second temperature higher than the first temperature, a ferromagnetic pinned reference layer, and a non-magnetic spacer layer between the free layer and the reference layer. During a writing process, the metal oxide layer is non-magnetic. For magnetic memory cells, such as magnetic tunnel junction cells, the metal oxide layer provides reduced switching currents.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 1, 2014
    Assignee: Seagate Technology LLC
    Inventors: Xiaohua Lou, Yuankai Zheng, Wenzhong Zhu, Wei Tian, Zheng Gao
  • Patent number: 8670271
    Abstract: A magnetic tunnel junction having a ferromagnetic free layer and a ferromagnetic pinned reference layer, each having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation, the ferromagnetic free layer switchable by spin torque. The magnetic tunnel junction includes a ferromagnetic assist layer proximate the free layer, the assist layer having a low magnetic anisotropy less than 700 Oe and positioned to apply a magnetic field on the free layer.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: March 11, 2014
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Zheng Gao, Wonjoon Jung, Xuebing Feng, Xiaohua Lou, Haiwen Xi
  • Patent number: 8654618
    Abstract: A DFH (dynamic fly height) equipped TAMR (Thermal Assisted Magnetic Recording) write head uses optical-laser excited surface plasmons to locally heat a magnetic recording medium so that writing is enabled, while a DFH heater allows the head to fly very close to the magnetic medium. The write head includes an integral HDI sensor with a narrow track width for high spatial resolution. The HDI sensor is calibrated to obtain a relationship between its resistance and heater power. When the TAMR head is operated, measurement of high frequency voltage across the HDI sensor as a function of heater power indicates impending touchdowns, while use of the calibrated resistance curve enables the sensor to monitor temperature variations within components of the TAMR write head.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 18, 2014
    Assignee: Headway Technologies, Inc.
    Inventors: Kowang Liu, Xuhui Jin, Xiaohua Lou
  • Patent number: 8634223
    Abstract: A magnetic tunnel junction memory cell includes a ferromagnetic reference layer, a ferromagnetic free layer, and a non-magnetic barrier layer separating the ferromagnetic reference layer from the ferromagnetic free layer. The magnetic tunnel junction cell has an asymmetric energy barrier for switching between a high resistance data state and a low resistance data state. Memory devices and methods are also described.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: January 21, 2014
    Assignee: Seagate Technology LLC
    Inventors: Wenzhong Zhu, Xiaohua Lou, Dimitar V. Dimitrov
  • Publication number: 20140003138
    Abstract: A memory unit includes a magnetic tunnel junction data cell electrically coupled to a bit line and a word line. The magnetic tunnel junction data cell is configured to switch between a high resistance state and a low resistance state by passing a unipolar voltage across the magnetic tunnel junction data cell. A diode is electrically coupled between the magnetic tunnel junction data cell and the word line or bit line. A voltage source provides the unipolar voltage across the magnetic tunnel junction data cell that writes the high resistance state and the low resistance state.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 2, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Xiaohua Lou, Haiwen Xi
  • Patent number: 8537607
    Abstract: A staggered magnetic tunnel junction includes a free magnetic layer extending in a lateral direction between a first end portion and an opposing second end portion and a tunneling barrier disposed between a reference magnetic layer and the first end portion and forming a magnetic tunnel junction. Current flows through the free magnetic layer in the lateral direction to switch the magnetic tunnel junction between a high resistance state and a low resistance state.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: September 17, 2013
    Assignee: Seagate Technology LLC
    Inventor: Xiaohua Lou
  • Patent number: 8531876
    Abstract: A memory unit includes a magnetic tunnel junction data cell electrically coupled to a bit line and a word line. The magnetic tunnel junction data cell is configured to switch between a high resistance state and a low resistance state by passing a unipolar voltage across the magnetic tunnel junction data cell. A diode is electrically coupled between the magnetic tunnel junction data cell and the word line or bit line. A voltage source provides the unipolar voltage across the magnetic tunnel junction data cell that writes the high resistance state and the low resistance state.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: September 10, 2013
    Assignee: Seagate Technology LLC
    Inventors: Xiaohua Lou, Haiwen Xi
  • Patent number: 8508988
    Abstract: A magnetic tunnel junction having a compsensation element is disclosed. The magnetic tunnel junction includes a reference element, and a compensation element having an opposite magnetization moment to a magnetization moment of the reference element. A free magnetic layer is between the reference element and the compensation element, and an electrically insulating and non-magnetic tunneling barrier layer separates the free magnetic layer from the reference element. The free magnetic layer includes Co100-X-YFeXBY wherein X is a value being greater than 30 and Y is a value being greater than 15.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: August 13, 2013
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Dimitar V. Dimitrov, Dexin Wang, Wei Tian, Xiaobin Wang, Xiaohua Lou
  • Patent number: 8466525
    Abstract: Apparatus and associated method for writing data to a non-volatile memory cell, such as spin-torque transfer random access memory (STRAM). In accordance with some embodiments, a resistive sense element (RSE) has a heat assist region, magnetic tunneling junction (MTJ), and pinned region. When a first logical state is written to the MTJ with a spin polarized current, the pinned and heat assist regions each have a substantially zero net magnetic moment. When a second logical state is written to the MTJ with a static magnetic field, the pinned region has a substantially zero net magnetic moment and the heat assist region has a non-zero net magnetic moment.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: June 18, 2013
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Xiaohua Lou, Haiwen Xi, Michael Xuefei Tang