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    VARIABLE MAGNETIC LAYER FOR WIRELESS CHARGING
    3.
    发明申请
    VARIABLE MAGNETIC LAYER FOR WIRELESS CHARGING 审中-公开

    公开(公告)号：WO2021079293A1

    公开(公告)日：2021-04-29

    申请号：PCT/IB2020/059908

    申请日：2020-10-21

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： HAMEED, Zohaib ,  OIEN-ROCHAT, Milo G. ,  BRUZZONE, Charles L. ,  HOYLE, Charles D. ,  BENSON, Michael D. ,  SOKOL, Jennifer J. ,  SUH, Jung Ju

    IPC: H01F27/36 ,  H01F38/14

    Abstract: A magnetic film assembly includes a coil having a plurality of turns defining a first major boundary surface of the coil, such that when energized, the coil generates an in-plane magnetic field component in a region of interest in air proximate and substantially parallel to the first major boundary surface, the in-plane magnetic field component having a magnetic field strength H that varies between a maximum Hmax and about 10% of Hmax in the region of interest in air; and a magnetic layer disposed on the coil so as to include the region of interest, such that when energized, the coil generates a magnetic field inducing an in-plane magnetic flux density B in the magnetic layer in the region of interest that varies less than about 5% in the region of interest.

    WIRELESS POWER TRANSFER
    4.
    发明申请
    WIRELESS POWER TRANSFER 审中-公开

    公开(公告)号：WO2020141378A1

    公开(公告)日：2020-07-09

    申请号：PCT/IB2019/060768

    申请日：2019-12-13

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： HAMEED, Zohaib ,  KIM, Jaewon ,  KHIEU, Sithya S.

    IPC: H02J50/12 ,  H01F38/14 ,  H02J50/50

    Abstract: A device is described having one or more conductive loops to produce an electromagnetic field, such as for wireless power transfer to an electronic device. In some examples, an antenna is used with at least one resonating capacitor ring that is relatively co-planar with the antenna, and that is magnetically coupled to the antenna but is not electrically powered by an external source. In addition, a device is described having two or more thin-film coils, each coil comprising a pair of terminals and at least one loop defining a plane and an interior region. In some examples, the planes of the two or more coils are disposed substantially parallel to one another, the interior regions of the two or more coils at least partially overlap one another, and the pairs of terminals of the antennae are electrically connected in parallel.

    ENVIRONMENTAL OR PHYSICAL EXPOSURE DETECTION THROUGH REACTANCE AND TEMPERATURE MONITORING OF A SENSOR
    5.
    发明申请
    ENVIRONMENTAL OR PHYSICAL EXPOSURE DETECTION THROUGH REACTANCE AND TEMPERATURE MONITORING OF A SENSOR 审中-公开
    通过传感器的温度监测和环境或物理暴露检测

    公开(公告)号：WO2018049363A1

    公开(公告)日：2018-03-15

    申请号：PCT/US2017/051065

    申请日：2017-09-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： MUENSTERMANN, Benjamin ,  WEINMANN, Christian ,  KUEHNEWEG, Bernd ,  DEN DRIJVER, Andrea ,  NESHATAEV, Ivan ,  TESCH, Walter ,  HAMEED, Zohaib ,  SALEHI, Mohsen

    IPC: G06K19/07 ,  G06K19/077

    CPC classification number: G06K19/0717 ,  G06K19/07718

    Abstract: A method for monitoring the surface of a device to physical and/or environmental exposure, the method comprising: • (a) attaching at least one sensor including a reactance autotuning integrated circuit to a surface of a device; • (b) attaching a reader in proximity to the sensor; • (c) measuring a reference reactance of the sensor with the reader at a selected frequency; • (d) continually monitoring for changes in the reactance of the sensor at the selected frequency, wherein changes to the reactance are digitized by the autotuning circuit; and • (e) comparing differences between the reference reactance and changes to the monitored reactance to determine if said surface of the device has been subjected to physical and/or environmental exposure.

    Abstract translation: 一种用于监测设备的表面以进行物理和/或环境暴露的方法，所述方法包括：（a）将包括电抗自动调谐集成电路的至少一个传感器附接到设备的表面 ; （b）将传感器安装在传感器附近; （c）以选定频率测量传感器与阅读器的参考电抗; （d）连续监测所选频率下传感器电抗的变化，其中电抗的变化通过自动调谐电路数字化; （e）比较参考电抗与监测到的电抗的变化之间的差异，以确定装置的所述表面是否已经受到物理和/或环境暴露。

    SHIELDED RFID ANTENNA
    6.
    发明申请
    SHIELDED RFID ANTENNA 审中-公开
    屏蔽RFID天线

    公开(公告)号：WO2017218619A1

    公开(公告)日：2017-12-21

    申请号：PCT/US2017/037372

    申请日：2017-06-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： JESME, Ronald D. ,  GABRIEL, Nicholas T. ,  BONIFAS, Andrew P. ,  HAMEED, Zohaib

    IPC: H04B5/00

    Abstract: A shielded antenna (100) includes a spiral antenna (110) and a shield (120) disposed on the spiral antenna. The spiral antenna comprises a plurality of substantially concentric loops. The shield comprises a plurality of electrically isolated electrically conductive segments forming a regular pattern, such that in a top plan view, at least one segment overlaps a portion of at least two loops, and at least one pair of adjacent conductive segments defines an electrically insulative gap therebetween.

    Abstract translation: 屏蔽天线（100）包括设置在螺旋天线上的螺旋天线（110）和屏蔽（120）。 螺旋天线包括多个基本上同心的环。 该护罩包括形成规则图案的多个电隔离导电段，使得在俯视图中，至少一个段与至少两个环的一部分重叠，并且至少一对相邻导电段限定电绝缘 间隙。

    SYSTEM WITH MAGNETIC FILM FOR REDUCING PASSIVE INTERMODULATION
    7.
    发明申请
    SYSTEM WITH MAGNETIC FILM FOR REDUCING PASSIVE INTERMODULATION 审中-公开

    公开(公告)号：WO2022069979A1

    公开(公告)日：2022-04-07

    申请号：PCT/IB2021/058252

    申请日：2021-09-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： BRUZZONE, Charles L. ,  TOSTENRUDE, Jeffrey A. ,  HAMEED, Zohaib ,  KEENEY, Jeffrey D.

    IPC: H05K9/00 ,  H01P1/04 ,  H01P1/23

    Abstract: A wireless communication system includes a transmitter configured to transmit at least first and second radio waves having respective different frequencies F1 and F2, an electrically conductive first passive substantially linear medium, an electrically conductive first passive substantially nonlinear medium disposed proximate the first passive substantially linear medium, and a first magnetic film covering at least a portion of the first passive substantially linear medium. When the transmitter transmits the first and second radio waves, the first passive substantially linear and nonlinear media receive the first and second radio waves and generate first and second signals propagating therein at the respective frequencies F1 and F2. At least one intermodulation signal having a frequency F3 equal to nF1+mF2, where m and n positive or negative integers, is generated in the first passive substantially nonlinear medium. The first magnetic film reduces the at least one intermodulation signal by at least 2 dB.

    FALL ARRESTING DEVICE EVENT GENERATION AND MONITORING
    9.
    发明申请
    FALL ARRESTING DEVICE EVENT GENERATION AND MONITORING 审中-公开

    公开(公告)号：WO2019030708A1

    公开(公告)日：2019-02-14

    申请号：PCT/IB2018/056014

    申请日：2018-08-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： BLACKFORD, Matthew J. ,  HAMEED, Zohaib ,  JESME, Ronald D.

    IPC: G08B21/04 ,  A62B35/00

    Abstract: A fall arresting device including a device housing, a shaft within the housing, a rotor assembly rotatably connected to the shaft that includes a drum and a disc having at least one region of a ferromagnetic material, an extendable lifeline connected to the drum, a magnetic sensor positioned stationary relative to the device housing and adjacent to the disc, and a that includes a hard-magnetic material. The magnet positioned stationary relative the device housing and the magnetic sensor, where the magnetic sensor is configured to detect a change in a magnetic field produced by the magnet when the disc rotates about the shaft, the change in the magnetic field induced by the at least one region of the ferromagnetic material being brought within close proximity to the magnet as the disc rotates.

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