Patents by Inventor Vladimir Leonov

Vladimir Leonov 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: 9455647
    Abstract: In an electret element 100 including a substrate 101, an electrically-conductive electrode 103, and an electret layer 107 including a first dielectric layer 104 and a second dielectric layer 105, when electrical charge charged in the electret layer 107 is negative, a bottom Ec of conductive band of the second dielectric layer 105 is lower than a bottom Ec of the first dielectric layer 104, and when the electrical charge is positive, a top Ev of valence band of the second dielectric layer 105 is higher than a top Ev of the first dielectric layer 104; and a concave portion 106 is formed in a surface of the first dielectric layer 104; and the second dielectric layer 105 is formed to cover the entire of the bottom face 106a and at least a part of the side wall 106b of the concave portion.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 27, 2016
    Assignees: PANASONIC CORPORATION, IMEC vzw
    Inventors: Hiroki Takeuchi, Vladimir Leonov
  • Patent number: 8975791
    Abstract: A patterned electret structure (21) on a substrate (10) comprises a dielectric structure comprising at least one non-patterned dielectric layer (22), and a charge pattern (14) in the dielectric structure and/or at a surface of a dielectric layer that is part of the dielectric structure and/or at an interface between dielectric layers that are part of the dielectric structure. By the presence of the non-patterned dielectric layer (22), the influence of the presence of a conductive substrate (10) on the charges (14) of the electret structure (21) is alleviated, hence increasing the charge stability over time. Moreover, in embodiments of the present invention, the charge stability is substantially independent of the width (W1, W2, W3) of the charge pattern. A method for manufacturing such patterned electret structure (21) is also provided.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: March 10, 2015
    Assignee: IMEC
    Inventor: Vladimir Leonov
  • Publication number: 20140145554
    Abstract: In an electret element 100 including a substrate 101, an electrically-conductive electrode 103, and an electret layer 107 including a first dielectric layer 104 and a second dielectric layer 105, when electrical charge charged in the electret layer 107 is negative, a bottom Ec of conductive band of the second dielectric layer 105 is lower than a bottom Ec of the first dielectric layer 104, and when the electrical charge is positive, a top Ev of valence band of the second dielectric layer 105 is higher than a top Ev of the first dielectric layer 104; and a concave portion 106 is formed in a surface of the first dielectric layer 104; and the second dielectric layer 105 is formed to cover the entire of the bottom face 106a and at least a part of the side wall 106b of the concave portion.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 29, 2014
    Applicants: IMEC, Panasonic Corporation
    Inventors: Hiroki TAKEUCHI, Vladimir LEONOV
  • Patent number: 8564284
    Abstract: A method of evaluating the condition of a laminated core of an electric machine including positioning a magnetic flux injection excitation yoke extending between a pair of teeth of the laminated core, and the excitation yoke being wound with an excitation winding defining an electrical circuit for producing a magnetic flux excitation. Power is supplied to an excitation winding wound around the yoke to produce a magnetic flux in the yoke and to form a magnetic circuit through the yoke and the laminated core. A characteristic of the electrical circuit of the excitation winding is measured to identify a fault in the magnetic circuit corresponding to an eddy current between individual laminations in the laminated core.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: October 22, 2013
    Assignee: Siemens Energy, Inc.
    Inventor: Vladimir Leonov
  • Patent number: 8508220
    Abstract: A method and system for evaluating the condition of a laminated core of an electric machine, and including a first yoke wound with a first winding and having a first pair of arms spanning between a first pair of teeth of the laminated core, and a second yoke wound with a second winding and having a second pair of arms spanning between a second pair of teeth. A power supply provides power to an electrical circuit defined by one of the first and second windings to produce a magnetic flux in the yoke corresponding to the one of the first and second windings and defining an excitation yoke. A monitoring module provides a measurement of a characteristic of an electrical circuit defined by the other one of the first and second windings to identify a fault corresponding to an eddy current between individual laminations in the laminated core.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: August 13, 2013
    Assignee: Siemens Energy, Inc.
    Inventor: Vladimir Leonov
  • Publication number: 20120227778
    Abstract: Disclosed are thermoelectric systems and methods for manufacturing thermoelectric systems. In one embodiment, a thermoelectric system include a flexible structure and at least one thermocouple unit integrated in or attached to the flexible structure, where each thermocouple unit comprises at least one thermocouple and at least one flexible radiator element thermally connected to a first end of the at least one thermocouple. In another embodiment, a method includes providing a flexible structure, forming at least one thermocouple unit comprising at least one thermocouple and at least one flexible radiator element thermally connected to a first end of the at least one thermocouple, and integrating the at least one thermocouple unit in or attaching the at least one thermocouple unit to the flexible structure.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: IMEC
    Inventor: Vladimir Leonov
  • Publication number: 20120206151
    Abstract: A method of evaluating the condition of a laminated core of an electric machine including positioning a magnetic flux injection excitation yoke extending between a pair of teeth of the laminated core, and the excitation yoke being wound with an excitation winding defining an electrical circuit for producing a magnetic flux excitation. Power is supplied to an excitation winding wound around the yoke to produce a magnetic flux in the yoke and to form a magnetic circuit through the yoke and the laminated core. A characteristic of the electrical circuit of the excitation winding is measured to identify a fault in the magnetic circuit corresponding to an eddy current between individual laminations in the laminated core.
    Type: Application
    Filed: February 11, 2011
    Publication date: August 16, 2012
    Inventor: Vladimir Leonov
  • Publication number: 20120206162
    Abstract: A method and system for evaluating the condition of a laminated core of an electric machine, and including a first yoke wound with a first winding and having a first pair of arms spanning between a first pair of teeth of the laminated core, and a second yoke wound with a second winding and having a second pair of arms spanning between a second pair of teeth. A power supply provides power to an electrical circuit defined by one of the first and second windings to produce a magnetic flux in the yoke corresponding to the one of the first and second windings and defining an excitation yoke. A monitoring module provides a measurement of a characteristic of an electrical circuit defined by the other one of the first and second windings to identify a fault corresponding to an eddy current between individual laminations in the laminated core.
    Type: Application
    Filed: February 11, 2011
    Publication date: August 16, 2012
    Inventor: Vladimir Leonov
  • Publication number: 20110163615
    Abstract: A patterned electret structure (21) on a substrate (10) comprises a dielectric structure comprising at least one non-patterned dielectric layer (22), and a charge pattern (14) in the dielectric structure and/or at a surface of a dielectric layer that is part of the dielectric structure and/or at an interface between dielectric layers that are part of the dielectric structure. By the presence of the non-patterned dielectric layer (22), the influence of the presence of a conductive substrate (10) on the charges (14) of the electret structure (21) is alleviated, hence increasing the charge stability over time. Moreover, in embodiments of the present invention, the charge stability is substantially independent of the width (W1, W2, W3) of the charge pattern. A method for manufacturing such patterned electret structure (21) is also provided.
    Type: Application
    Filed: September 11, 2009
    Publication date: July 7, 2011
    Applicant: IMEC
    Inventor: Vladimir Leonov
  • Patent number: 7938708
    Abstract: An articulated walking device, configured for movement across a surface, includes a frame and a plurality of leg assemblies movably engaged with the frame. Each leg assembly includes a leg member configured to rotate with respect to the frame about first and second axes at least generally transverse to one another. A drive mechanism operatively engaged with the plurality of leg assemblies actuates each of the leg members in like, predetermined, repeatable cycles of movement. The leg members are out of phase with one another, such that sufficient leg members are always supporting the toy device in an upright manner and immediately adjoining leg members do not move together in parallel.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: May 10, 2011
    Assignee: Mattel, Inc.
    Inventors: William Willet, Vladimir Leonov
  • Patent number: 7938709
    Abstract: A toy vehicle has a chassis with road wheels movement including one or two each mounted to pivot about a general vertical axis to steer. A steering mechanism includes a turning member mounted so as to pivot about the generally vertical axis and supporting one road wheel for rotation about a horizontal axis for movement of the vehicle and about the generally vertical axis to steer the vehicle. A control member slides across the chassis. A magnetic body pivots on a pivot axis extending front and rear. The magnetic body has a central axis perpendicular to the pivot axis with opposite magnetic poles of the body locate along the central axis on opposite sides of the pivot axis. A crank is connected at one end with the magnetic body and at an opposite end with the elongated opening of the control member. A coil surrounds the magnetic body and rotates the magnetic body by the passage of an electric current in a selected direction through the coil thereby pivoting each road wheel connected with the control member.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: May 10, 2011
    Inventor: Vladimir Leonov
  • Patent number: 7875791
    Abstract: A method for manufacturing thermopile carrier chips comprises forming first type thermocouple legs and second type thermocouple legs on a first surface of a substrate and afterwards removing part of the substrate form a second surface opposite to the first surface, thereby forming a carrier frame from the substrate and at least partially releasing the thermocouple legs from the substrate, wherein the thermocouple legs are attached between parts of the carrier frame. First type thermocouple legs and second type thermocouple legs may be formed on the same substrate or on a separate substrate. In the latter approach both types of thermocouple legs may be optimised independently. The thermocouple legs may be self-supporting or they may be supported by a thin membrane layer. After mounting the thermopile carrier chips in a thermopile unit or in a thermoelectric generator, the sides of the carrier frame to which no thermocouple legs are attached are removed.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 25, 2011
    Assignee: Stichting IMEC Nederland
    Inventors: Vladimir Leonov, Paolo Fiorini, Chris Van Hoof
  • Patent number: 7794300
    Abstract: A toy vehicle includes a central housing having first and second oppositely disposed sides. A first wheel is rotatably mounted on the first side of the housing, and a second wheel is rotatably mounted on the second side of the housing. Each of the first and second wheels has a central hub and a plurality of individual vanes rotatably attached to the hub. Each hub has a center disposed along a first axis of rotation. Each vane is rotatable about a second vane axis extending transversely with respect to the first axis. An end of each vane distal to the hub forms a circumferential surface portion of one of the first and second wheels.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: September 14, 2010
    Assignee: Mattel, Inc.
    Inventors: Joseph T. Moll, Vladimir Leonov, William Willett, Kenlip Ong
  • Patent number: 7723606
    Abstract: A thermoelectric generator (TEG) and a method of fabricating the TEG are described. The TEG is designed so that parasitic thermal resistance of air and height of legs of thermocouples forming a thermopile can be varied and optimized independently. The TEG includes a micromachined thermopile sandwiched in between a hot and a cold plate and at least one spacer in between the thermopile and the hot and/or cold plate. The TEG fabrication includes fabricating the thermopiles, a rim, and the cold plate.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: May 25, 2010
    Assignee: IMEC
    Inventors: Paolo Fiorini, Vladimir Leonov, Sherif Sedky, Chris Van Hoof, Kris Baert
  • Patent number: 7662017
    Abstract: A toy vehicle comprises a lift mechanism which allows the toy vehicle to be lifted from a support surface in a lifting motion and roll end over end over end. The lift mechanism includes a lift arm pivotally mounted to a housing of the toy vehicle. A lift arm actuating motor is coupled to a lift arm drive screw that is in threaded engagement with a lift arm drive nut. A strut is coupled between the drive nut and the lift arm. In operation, the lift arm actuating motor drives the lift arm drive screw and causes the lift arm drive nut to drive the strut and move the lift arm into an extended position, causing the lift arm to engage a support surface to lift the toy vehicle. In the extended position, the toy vehicle is sufficiently rounded to permit the vehicle to roll end over end over end.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: February 16, 2010
    Assignee: Mattel, Inc.
    Inventors: Joseph T. Moll, Justin Discoe, Vladimir Leonov, Nathan Bloch, John M. Clements, Gregory Garneau
  • Publication number: 20090325460
    Abstract: A toy vehicle has a chassis with road wheels movement including one or two each mounted to pivot about a general vertical axis to steer. A steering mechanism includes a turning member mounted so as to pivot about the generally vertical axis and supporting one road wheel for rotation about a horizontal axis for movement of the vehicle and about the generally vertical axis to steer the vehicle. A control member slides across the chassis. A magnetic body pivots on a pivot axis extending front and rear. The magnetic body has a central axis perpendicular to the pivot axis with opposite magnetic poles of the body locate along the central axis on opposite sides of the pivot axis. A crank is connected at one end with the magnetic body and at an opposite end with the elongated opening of the control member. A coil surrounds the magnetic body and rotates the magnetic body by the passage of an electric current in a selected direction through the coil thereby pivoting each road wheel connected with the control member.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventor: Vladimir Leonov
  • Publication number: 20090293929
    Abstract: A hybrid energy scavenger comprising a thermopile unit and photovoltaic cells is provided, wherein the hybrid energy scavenger may generate a good output power when operating in conditions of small temperature difference between a heat source and a heat sink, and/or either receiving the heat from a heat source with high thermal resistance or dissipating it into a heat sink with high thermal resistance such as a human body or a body of any other endotherm, or a fluid such as air, and wherein the photovoltaic cells are part of a heat dissipating structure for connection to the heat sink.
    Type: Application
    Filed: March 4, 2009
    Publication date: December 3, 2009
    Applicant: Stichting IMEC Nederland
    Inventor: Vladimir Leonov
  • Publication number: 20090292335
    Abstract: The present invention provides a TEG device comprising a first unit comprising a thermopile unit and a second unit comprising a cold plate and/or a radiator. One of the first and second units is adapted for being embedded or implanted into a body, while the other of the first and second units is adapted for being placed at the outer surface of the body, i.e. in a fluid. The first and second units are adapted for being thermally connected to each other through the surface between the body and the fluid when in use.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 26, 2009
    Applicant: Stichting IMEC Nederland
    Inventor: Vladimir Leonov
  • Patent number: 7563151
    Abstract: A toy vehicle includes a driven wheel, a drive assembly including a drive motor, and a steering assembly including a first steering motor and first and second steering arms. The drive motor is coupled to the driven wheel. The first and second steering arms are coupled to the steering motor. The drive motor drives rotation of the drive assembly relative to the driven wheel, and the steering motor drives rotation of the first and second steering arms relative to the drive assembly. Preferably, a second steering motor is provided, and rotation of the first and second steering arms may be independently controlled.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: July 21, 2009
    Assignee: Mattel, Inc.
    Inventors: Vladimir Leonov, David S. Bowen
  • Patent number: D928249
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 17, 2021
    Assignee: JOYIN INC.
    Inventor: Vladimir Leonov