Patents by Inventor Yuchen Zhou

Yuchen Zhou 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: 10380008
    Abstract: A framework is described herein for identifying implicit assumptions associated with an SDK and its accompanying documentation (e.g., dev guide). An implicit assumption is information that is not expressly stated in the documentation, but which would be useful in assisting an application developer in building an application. The framework also describes a systematic approach for identifying one or more vulnerability patterns based on the identified implicit assumptions. An application developer may run a test on an application that is being developed to ensure that it does not have any deficiency which matches a vulnerability pattern.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: August 13, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Rui Wang, Yuchen Zhou, Shuo Chen, Shaz Qadeer, Yuri Gurevich
  • Patent number: 10371938
    Abstract: The current invention relates to the method to achieve virtual reality or augmented reality with using flexible substrate containing light emitting arrays, or optical passage arrays, to project image upon the retinas of human eyes. Further, it relates to the method to detect the real-time focal length change of the eye-lens and modify the flexible substrate's curvature and distance from the eye to vary global angle configurations of light beams that go into the eye to produce images on the retina at various focus depth of the eyes to achieve re-focusable artificial vision.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: August 6, 2019
    Inventor: Yuchen Zhou
  • Publication number: 20190238576
    Abstract: The technology presented herein enables the use of a clustering algorithm to identify additional malicious domains based on known malicious domains. In a particular embodiment, a method provides identifying a first plurality of domain names associated with a malicious domain campaign and seeding a first clustering algorithm with the first plurality of domain names. After seeding the first clustering algorithm, the method provides using the first clustering algorithm to process passive domain name system (DNS) records to identify and group a second plurality of domain names associated with the malicious domain campaign.
    Type: Application
    Filed: July 12, 2018
    Publication date: August 1, 2019
    Inventors: Michael Edward Weber, Jun Wang, Yuchen Zhou, Wei Xu
  • Patent number: 10361362
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer and a first magnetic reference layer with an insulating tunnel junction layer interposed therebetween; a second magnetic reference layer made of a material comprising cobalt and formed adjacent to the first magnetic reference layer opposite the insulating tunnel junction layer; an iridium layer formed adjacent to the second magnetic reference layer opposite the first magnetic reference layer; and a magnetic fixed layer formed adjacent to the iridium layer. The magnetic free layer has a variable magnetization direction substantially perpendicular to the layer plane thereof. The first and second magnetic reference layers have a first fixed magnetization direction substantially perpendicular to the layer planes thereof.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 23, 2019
    Assignee: Avalanche Technology, Inc.
    Inventors: Huadong Gan, Yiming Huai, Yuchen Zhou, Zihui Wang
  • Publication number: 20190148622
    Abstract: A spin-torque transfer magnetic random access memory (STTMRAM) element employed to store a state based on the magnetic orientation of a free layer, the STTMRAM element is made of a first perpendicular free layer (PFL) including a first perpendicular enhancement layer (PEL). The first PFL is formed on top of a seed layer. The STTMRAM element further includes a barrier layer formed on top of the first PFL and a second perpendicular reference layer (PRL) that has a second PEL, the second PRL is formed on top of the barrier layer. The STTMRAM element further includes a capping layer that is formed on top of the second PRL.
    Type: Application
    Filed: January 9, 2013
    Publication date: May 16, 2019
    Applicant: Avalanche Technology, Inc.
    Inventors: Yiming Huai, Yuchen Zhou, Jing Zhang, Roger Klas Malmhall, Ioan Tudosa, Rajiv Yadav Ranjan
  • Publication number: 20190013461
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure having a variable magnetization direction perpendicular to a layer plane thereof; a non-magnetic metal layer formed adjacent to the magnetic free layer structure; an oxide layer formed adjacent to the non-magnetic metal layer; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure opposite the non-magnetic metal layer; a first magnetic reference layer formed adjacent to the insulating tunnel junction layer; a second magnetic reference layer separated from the first magnetic reference layer by a perpendicular enhancement layer; an antiferromagnetic coupling layer formed adjacent to the second magnetic reference layer; and a magnetic fixed layer structure formed adjacent to the antiferromagnetic coupling layer. The first and second magnetic reference layers have a first invariable magnetization direction substantially perpendicular to layer planes thereof.
    Type: Application
    Filed: August 24, 2018
    Publication date: January 10, 2019
    Inventors: Zihui Wang, Yiming Huai, Huadong Gan, Yuchen Zhou
  • Patent number: 10178367
    Abstract: The current invention relates to the method and apparatus to determine the focus point of a viewer from a single eye of the viewer in a viewing space. The claimed method detects the focus depth and the line of eye sight from said single eye. It further relates to the method to use the determined focus point to achieve virtual reality and augmented reality.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 8, 2019
    Inventor: Yuchen Zhou
  • Patent number: 10032979
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure having a variable magnetization direction perpendicular to a layer plane thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a first magnetic reference layer comprising cobalt, iron, and boron formed adjacent to the insulating tunnel junction layer; a second magnetic reference layer comprising cobalt separated from the first magnetic reference layer by a molybdenum layer; an iridium layer formed adjacent to the second magnetic reference layer; and a magnetic fixed layer structure formed adjacent to the iridium layer. The magnetic free layer structure includes a first and a second magnetic free layers with a perpendicular enhancement layer interposed therebetween. The first and second magnetic reference layers have a first invariable magnetization direction perpendicular to layer planes thereof.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 24, 2018
    Assignee: Avalanche Technology, Inc.
    Inventors: Huadong Gan, Yiming Huai, Yuchen Zhou, Zihui Wang, Bing K. Yen, Xiaojie Hao, Pengfa Xu
  • Patent number: 10008663
    Abstract: The present invention is directed to an MTJ memory element, which includes a magnetic free layer structure having a variable magnetization direction perpendicular to a layer plane thereof; a tunnel junction layer formed adjacent to the magnetic free layer structure; a magnetic reference layer structure formed adjacent to the tunnel junction layer and having a first invariable magnetization direction perpendicular to a layer plane thereof; an anti-ferromagnetic coupling layer formed adjacent to the magnetic reference layer structure; and a magnetic fixed layer structure formed adjacent to the anti-ferromagnetic coupling layer and having a second invariable magnetization direction that is perpendicular to a layer plane thereof and is opposite to the first invariable magnetization direction. The magnetic fixed layer structure includes multiple stacks of a trilayer unit structure, which includes three layers of different materials with at least one of the three layers of different materials being magnetic.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 26, 2018
    Assignee: Avalanche Technology, Inc.
    Inventors: Xiaojie Hao, Zihui Wang, Huadong Gan, Yuchen Zhou, Yiming Huai
  • Publication number: 20180146183
    Abstract: The current invention relates to the method to achieve virtual reality or augmented reality with using flexible substrate containing light emitting arrays, or optical passage arrays, to project image upon the retinas of human eyes. Further, it relates to the method to detect the real-time focal length change of the eye-lens and modify the flexible substrate's curvature and distance from the eye to vary global angle configurations of light beams that go into the eye to produce images on the retina at various focus depth of the eyes to achieve re-focusable artificial vision.
    Type: Application
    Filed: December 8, 2017
    Publication date: May 24, 2018
    Inventor: Yuchen Zhou
  • Publication number: 20180090675
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer and a first magnetic reference layer with an insulating tunnel junction layer interposed therebetween; a second magnetic reference layer made of a material comprising cobalt and formed adjacent to the first magnetic reference layer opposite the insulating tunnel junction layer; an iridium layer formed adjacent to the second magnetic reference layer opposite the first magnetic reference layer; and a magnetic fixed layer formed adjacent to the iridium layer. The magnetic free layer has a variable magnetization direction substantially perpendicular to the layer plane thereof. The first and second magnetic reference layers have a first fixed magnetization direction substantially perpendicular to the layer planes thereof.
    Type: Application
    Filed: November 16, 2017
    Publication date: March 29, 2018
    Inventors: Huadong Gan, Yiming Huai, Yuchen Zhou, Zihui Wang
  • Publication number: 20180076384
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure having a variable magnetization direction perpendicular to a layer plane thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a first magnetic reference layer comprising cobalt, iron, and boron formed adjacent to the insulating tunnel junction layer; a second magnetic reference layer comprising cobalt separated from the first magnetic reference layer by a molybdenum layer; an iridium layer formed adjacent to the second magnetic reference layer; and a magnetic fixed layer structure formed adjacent to the iridium layer. The magnetic free layer structure includes a first and a second magnetic free layers with a perpendicular enhancement layer interposed therebetween. The first and second magnetic reference layers have a first invariable magnetization direction perpendicular to layer planes thereof.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Inventors: Huadong Gan, Yiming Huai, Yuchen Zhou, Zihui Wang, Bing K. Yen, Xiaojie Hao, Pengfa Xu
  • Patent number: 9910107
    Abstract: A magnetic sensor with increased sensitivity, lower noise, and improved frequency response is described. The sensor's free layer is ribbon shaped and is closely flanked at each long edge by a ribbon of magnetically soft, high permeability material. Side stripes of soft magnetic material absorb external field flux and concentrate the flux to flow into the sensor's edges to promote larger MR sensor magnetization rotation. Side stripes are located in the plane of the free layer at a maximum distance of 0.1 microns from each side of the free layer. The free layer has a width <300 nm, a length of >1 micron, and an aspect ratio (thickness/width) of at least 5. Preferably, Mfilmtfilm>Mfreetfree, where Mfilm and Mfree are the magnetization of the soft magnetic layers and free layer, respectively, and ffilm and tfree are the thickness of the soft magnetic layers and free layer, respectively.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 6, 2018
    Assignee: Headway Technologies, Inc.
    Inventors: Yuchen Zhou, Yimin Guo
  • Patent number: 9871191
    Abstract: The present invention is directed to an MRAM device comprising a plurality of MTJ memory elements. Each of the memory elements includes a magnetic free layer and a first magnetic reference layer with an insulating tunnel junction layer interposed therebetween; a second magnetic reference layer formed adjacent to the first magnetic reference layer opposite the insulating tunnel junction layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer opposite the first magnetic reference layer; and a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer. The magnetic free layer has a variable magnetization direction substantially perpendicular to the layer plane thereof. The first and second magnetic reference layers have a first fixed magnetization direction substantially perpendicular to the layer planes thereof.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: January 16, 2018
    Assignee: Avalanche Technology, Inc.
    Inventors: Yuchen Zhou, Yiming Huai, Zihui Wang, Xiaojie Hao, Huadong Gan, Xiaobin Wang
  • Patent number: 9871190
    Abstract: The present invention is directed to an MRAM device comprising a plurality of MTJ memory elements. Each of the memory elements includes a magnetic free layer and a first magnetic reference layer with an insulating tunnel junction layer interposed therebetween; a second magnetic reference layer formed adjacent to the first magnetic reference layer opposite the insulating tunnel junction layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer opposite the first magnetic reference layer; and a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer. The magnetic free layer has a variable magnetization direction substantially perpendicular to the layer plane thereof. The first and second magnetic reference layers have a first fixed magnetization direction substantially perpendicular to the layer planes thereof.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 16, 2018
    Assignee: Avalanche Technology, Inc.
    Inventors: Huadong Gan, Yiming Huai, Yuchen Zhou, Xiaobin Wang, Zihui Wang
  • Publication number: 20170361076
    Abstract: Methods to collect use data of a user during customized skin care by using a specimen dispensing device are presented. Methods to utilize the embedded memory and electrical interface of the dispensing device and dispensers to collect use data of said user are also presented. The invention may also be applied to health care and personal care needs.
    Type: Application
    Filed: September 2, 2017
    Publication date: December 21, 2017
    Inventor: Yuchen Zhou
  • Patent number: 9831421
    Abstract: The present invention is directed to an MTJ memory element including a magnetic free layer structure which includes one or more magnetic free layers that have a same variable magnetization direction substantially perpendicular to layer planes thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a magnetic reference layer structure comprising a first magnetic reference layer formed adjacent to the insulating tunnel junction layer and a second magnetic reference layer separated therefrom by a perpendicular enhancement layer with the first and second magnetic reference layers having a first fixed magnetization direction substantially perpendicular to layer planes thereof; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer opposite the perpendicular enhancement layer; and a magnetic fixed layer comprising first and second magnetic fixed sublayers with the second magnetic fixed sublayer formed adjacent to the anti-ferromagnetic
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: November 28, 2017
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Huadong Gan, Yiming Huai, Yuchen Zhou, Xiaobin Wang, Bing K. Yen, Xiaojie Hao
  • Patent number: 9793319
    Abstract: The present invention is directed to a magnetic random access memory element that includes a multilayered seed structure formed by interleaving multiple layers of a first transition metal with multiple layers of a second transition metal; and a first magnetic layer formed on top of the multilayered seed structure. The first magnetic layer has a multilayer structure formed by interleaving layers of the first transition metal with layers of a magnetic material and has a first fixed magnetization direction substantially perpendicular to a layer plane thereof. The first transition metal is platinum or palladium, while the second transition metal is selected from the group consisting of tantalum, titanium, zirconium, hafnium, vanadium, niobium, chromium, molybdenum, and tungsten.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: October 17, 2017
    Assignee: Avalanche Technology, Inc.
    Inventors: Huadong Gan, Yiming Huai, Bing K. Yen, Roger K. Malmhall, Yuchen Zhou
  • Patent number: 9789295
    Abstract: Methods to provide customized skin care by using specimen dispensing device to dispense specimens from removable dispensers for the purpose of treating skin of a user are presented. Methods to utilize the embedded memory and electrical interface of the dispensing device and dispensers to produce customizable skin care products that give better skin treatment results are also presented. The invention may also be applied to health care and personal care needs.
    Type: Grant
    Filed: June 26, 2016
    Date of Patent: October 17, 2017
    Inventor: Yuchen Zhou
  • Publication number: 20170288137
    Abstract: The present invention is directed to an MTJ memory element including a magnetic free layer structure which includes one or more magnetic free layers that have a same variable magnetization direction substantially perpendicular to layer planes thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a magnetic reference layer structure comprising a first magnetic reference layer formed adjacent to the insulating tunnel junction layer and a second magnetic reference layer separated therefrom by a perpendicular enhancement layer with the first and second magnetic reference layers having a first fixed magnetization direction substantially perpendicular to layer planes thereof; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer opposite the perpendicular enhancement layer; and a magnetic fixed layer comprising first and second magnetic fixed sublayers with the second magnetic fixed sublayer formed adjacent to the anti-ferromagnetic
    Type: Application
    Filed: July 13, 2015
    Publication date: October 5, 2017
    Inventors: Zihui Wang, Huadong Gan, Yiming Huai, Yuchen Zhou, Xiaobin Wang, Bing K. Yen, Xiaojie Hao