Patents by Inventor Minxian Max Zhang

Minxian Max Zhang 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: 20150114927
    Abstract: Forming memristors on imaging devices can include forming a printhead body comprising a first conductive material, forming a memory on the printhead body by performing an oxidation process to form a switching oxide material on the first conductive material, and forming a second conductive material on the switching oxide material.
    Type: Application
    Filed: January 31, 2014
    Publication date: April 30, 2015
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Ning Ge, Zhiyong Li, Minxian Max Zhang
  • Publication number: 20150041751
    Abstract: In one example, a customizable nonlinear electrical device includes a first conductive layer, a second conductive layer, and a thin film metal-oxide layer sandwiched between the first conductive layer and the second conductive layer to form a first rectifying interface between the metal-oxide layer and the first conductive layer and a second rectifying interface between the metal-oxide layer and the second conductive layer. The metal-oxide layer includes an electrically conductive mixture of co-existing metal and metal oxides. A method forming a nonlinear electrical device is also provided.
    Type: Application
    Filed: April 26, 2012
    Publication date: February 12, 2015
    Inventors: Minxian Max Zhang, Jianhua Yang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Patent number: 8921960
    Abstract: A memristor array includes a lower layer of crossbars, upper layer of crossbars intersecting the lower layer of crossbars, memristor cells interposed between intersecting crossbars, and pores separating adjacent memristor cells. A method forming a memristor array is also provided.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: December 30, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Patent number: 8872153
    Abstract: A memristor includes a first electrode formed of a first metal, a second electrode formed of a second material, wherein the second material comprises a different material from the first metal, and a switching layer positioned between the first electrode and the second electrode. The switching layer is formed of a composition of a first material comprising the first metal and a second nonmetal material, in which the switching layer is in direct contact with the first electrode and in which at least one conduction channel is configured to be formed in the switching layer from an interaction between the first metal and the second nonmetal material.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: October 28, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, R. Stanley Williams
  • Patent number: 8779409
    Abstract: Low energy memristors with engineered switching channel materials include: a first electrode; a second electrode; and a switching layer positioned between the first electrode and the second electrode, wherein the switching layer includes a first phase comprising an insulating matrix in which is dispersed a second phase comprising an electrically conducting compound material for forming a switching channel.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: July 15, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, Gilberto Medeiros Riberio, R. Stanley Williams
  • Patent number: 8767438
    Abstract: A memelectronic device may have a first and a second electrode spaced apart by a plurality of materials. A first material may have a memory characteristic exhibited by the first material maintaining a magnitude of an electrically controlled physical property after discontinuing an electrical stimulus on the first material. A second material may have an auxiliary characteristic.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 1, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Byungjoon Choi, Minxian Max Zhang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Publication number: 20140167042
    Abstract: A memristor includes a first electrode; a second electrode; and a switching layer interposed between the first electrode and the second electrode, wherein the switching layer includes an electrically semiconducting or nominally insulating and weak ionic switching mixed metal oxide phase for forming at least one switching channel in the switching layer. A method of forming the memristor is also provided.
    Type: Application
    Filed: July 14, 2011
    Publication date: June 19, 2014
    Inventors: Jianhua Yang, Minxian Max Zhang, Feng Miao
  • Publication number: 20140145142
    Abstract: A memristor including a dopant source is disclosed. The structure includes an electrode, a conductive alloy including a conducting material, a dopant source material, and a dopant, and a switching layer positioned between the electrode and the conductive alloy, wherein the switching layer includes an electronically semiconducting or nominally insulating and weak ionic switching material. A method for fabricating the memristor including a dopant source is also disclosed.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 29, 2014
    Inventors: Minxian Max Zhang, Jianhua Yang, R. Stanley Williams
  • Patent number: 8711594
    Abstract: An asymmetric switching rectifier includes a first switching device to allow electric current to flow while in a first state and inhibit electric current in a second state and a second switching device connected in a head-to-head formation to said first switching device, said second switching to allow electric current to flow while in a first state and inhibit electric current in a second state. A first electric current to turn said switching devices to said first state is different than a second electric current to turn said switching devices to said second state. The rectifier further includes a bypass segment to draw a bypass electric current from a center electrode between said first switching device and said second switching device.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: April 29, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Minxian Max Zhang, Jianhua Yang, R. Stanley Williams
  • Publication number: 20140091270
    Abstract: Low energy memristors with engineered switching channel materials include: a first electrode; a second electrode; and a switching layer positioned between the first electrode and the second electrode, wherein the switching layer includes a first phase comprising an insulating matrix in which is dispersed a second phase comprising an electrically conducting compound material for forming a switching channel.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Publication number: 20140027705
    Abstract: A memristor array includes a lower layer of crossbars, upper layer of crossbars intersecting the lower layer of crossbars, memristor cells interposed between intersecting crossbars, and pores separating adjacent memristor cells. A method forming a memristor array is also provided.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 30, 2014
    Inventors: Jianhua Yang, Minxian Max Zhang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Publication number: 20130334485
    Abstract: Memristive elements are provided that include an active region disposed between a first electrode and a second electrode, the active region including two switching layers formed of a switching material capable of carrying a species of dopants and a conductive layer formed of a dopant source material. Memristive elements also are provided that include two active regions disposed between a first electrode and a second electrode, and a third electrode being disposed between and in electrical contact with both of the active regions. Each of the active regions include a switching layer formed of a switching material capable of carrying a species of dopants and a conductive layer formed of a dopant source material. Multilayer structures including the memristive elements also are provided.
    Type: Application
    Filed: February 28, 2011
    Publication date: December 19, 2013
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, R. Stanley Williams
  • Publication number: 20130250420
    Abstract: A dynamic optical crossbar array includes a first set of parallel transparent electrode lines, a bottom set of parallel electrode lines that cross said transparent electrode lines, and an optically variable material disposed between said first set of transparent electrode lines and said bottom set of electrode lines.
    Type: Application
    Filed: January 7, 2011
    Publication date: September 26, 2013
    Inventors: Jianhua Yang, Alexandre M. Bratkovski, David A. Fattal, Minxian Max Zhang
  • Publication number: 20130242637
    Abstract: A memelectronic device may have a first and a second electrode spaced apart by a plurality of materials. A first material may have a memory characteristic exhibited by the first material maintaining a magnitude of an electrically controlled physical property after discontinuing an electrical stimulus on the first material. A second material may have an auxiliary characteristic.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 19, 2013
    Inventors: Jianhua Yang, Byungjoon Choi, Minxian Max Zhang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Patent number: 8525553
    Abstract: In one example, an oxide-based negative differential resistance comparator circuit includes a composite NDR device that includes a first electrode, a first thin film oxide-based negative differential resistance (NDR) layer in contact with the first electrode and a central conductive portion. The composite NDR device also includes a second thin film oxide-based NDR layer disposed adjacent to the first NDR layer and a second electrode. A resistor may be placed in series with the composite NDR device and an electrical energy source can apply applying a voltage across the first electrode and second electrode. The composite NDR device produces a threshold based comparator functionality in the comparator circuit.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: September 3, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Wei Yi, Jianhua Yang, Matthew D. Pickett, Minxian Max Zhang
  • Patent number: 8487289
    Abstract: An electrically actuated device includes a reactive metal layer, a first electrode established in contact with the reactive metal layer, an insulating material layer established in contact with the first electrode or the reactive metal layer, an active region established on the insulating material layer, and a second electrode established on the active region. A conductive nano-channel is formed through a thickness of the insulating material layer.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: July 16, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, Gilberto Medeiros Ribeiro
  • Publication number: 20130175497
    Abstract: A memristor includes a first electrode formed of a first metal, a second electrode formed of a second material, wherein the second material comprises a different material from the first metal, and a switching layer positioned between the first electrode and the second electrode. The switching layer is formed of a composition of a first material comprising the first metal and a second nonmetal material, in which the switching layer is in direct contact with the first electrode and in which at least one conduction channel is configured to be formed in the switching layer from an interaction between the first metal and the second nonmetal material.
    Type: Application
    Filed: September 27, 2010
    Publication date: July 11, 2013
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, R. Stanley Williams
  • Patent number: 8385101
    Abstract: Methods and means related to memory resistors are provided. A memristor includes at least two different active materials disposed between a pair of electrodes. The active materials are selected to exhibit respective and opposite changes in electrical resistance in response to changes in oxygen ion content. The active materials are subject to oxygen ion reconfiguration under the influence of an applied electric field. An electrical resistance of the memristor is thus adjustable by way of applied programming voltages and is non-volatile between programming events.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: February 26, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jianhua Yang, Minxian Max Zhang, R. Stanley Williams
  • Publication number: 20130044525
    Abstract: An asymmetric switching rectifier includes a first switching device to allow electric current to flow while in a first state and inhibit electric current in a second state and a second switching device connected in a head-to-head formation to said first switching device, said second switching to allow electric current to flow while in a first state and inhibit electric current in a second state. A first electric current to turn said switching devices to said first state is different than a second electric current to turn said switching devices to said second state. The rectifier further includes a bypass segment to draw a bypass electric current from a center electrode between said first switching device and said second switching device.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Inventors: Minxian Max Zhang, Jianhua Yang, R. Stanley Williams
  • Patent number: 8324976
    Abstract: Circuitry is provided that closely emulates biological neural responses. Two astable multivibrator circuits (AMCs), each including a negative differential resistance device, are coupled in series-circuit relationship. Each AMC is characterized by a distinct voltage-dependant time constant. The circuitry exhibits oscillations in electrical current when subjected to a voltage equal to or greater than a threshold value. Various oscillating waveforms can be produced in accordance with voltages applied to the circuitry.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: December 4, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Julien Borghetti, Matthew D Pickett, Gilberto Medeiros Ribeiro, Wei Yi, Jianhua Yang, Minxian Max Zhang