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    Electrical switches and sensors
    41.
    发明授权
    Electrical switches and sensors 有权

    公开(公告)号：US10176937B2

    公开(公告)日：2019-01-08

    申请号：US15037481

    申请日：2014-09-04

    Applicant: VORBECK MATERIALS CORP.

    Inventor： John S Lettow ,  Terumi N McKenna ,  Dan F Scheffer

    IPC: H01H1/029

    Abstract: Electrical switches or sensors that comprise (a) a first electrical pole, (b) a layer of a variable resistance material in electrical contact with the first electrical pole, and (c) a second electrical pole that is in electrical contact with the variable resistance material and is not in electrical contact with the first pole, wherein the variable resistance material comprises at least one polymer having a glass transition temperature of no higher than about 10° C.

    RADIO-BASED VEHICULAR DIAGNOSTIC SYSTEM
    42.
    发明申请
    RADIO-BASED VEHICULAR DIAGNOSTIC SYSTEM 审中-公开

    公开(公告)号：US20180264895A1

    公开(公告)日：2018-09-20

    申请号：US15540133

    申请日：2016-01-27

    Applicant: VORBECK MATERIALS CORP.

    Inventor： John S Lettow ,  Trentice V Bolar

    IPC: B60C11/24 ,  G07C5/00 ,  G07C5/08 ,  B60C23/04

    CPC classification number: B60C11/246 ,  B60C11/243 ,  B60C23/0427 ,  G07C5/008 ,  G07C5/085

    Abstract: Embodiments of the present invention relate to tracks and a related monitoring system. In some embodiments of these teachings, the track can include one or more ground contacting elements (“GCE”) having rubber. Within each GCE, one or more integrated circuits (“IC”) are positioned. One or more conductive elements are positioned within each GCE. Each conductive elements is positioned external to but in electrical communication with of the ICs. Each conductive element is applied on an elastomer. Each conductive element includes one or more conductive compositions having fully exfoliated individual graphene sheets.

    Resilient radio-frequency tag
    45.
    发明授权
    Resilient radio-frequency tag 有权

    公开(公告)号：US09811774B2

    公开(公告)日：2017-11-07

    申请号：US15064215

    申请日：2016-03-08

    Applicant: VORBECK MATERIALS CORP.

    Inventor： John S Lettow ,  Sriram Manivannan ,  Dan F Scheffer ,  Kenneth E Fritsch

    IPC: G06K19/077

    CPC classification number: G06K19/07722 ,  G06K19/07773

    Abstract: A transponder comprises a first polymer layer. A radio frequency (“RF”) transponder is affixed to the first polymer layer, wherein the RF transponder includes a processor in electrical communication with a graphene-based antenna. A second polymer layer is formed on the first polymer layer and the RF transponder. The first polymer layer and second polymer layer form an encasement around the RF transponder. The encasement has a hermeticity of about 10−7 to about 10−12 atm·cc/sec. The encasement provides improved impact, temperature, vibration, chemical, and/or corrosion protection to the RF transponder.

    GRAPHENE-BASED ROTMAN LENS
    48.
    发明申请
    GRAPHENE-BASED ROTMAN LENS 审中-公开

    公开(公告)号：US20170256862A1

    公开(公告)日：2017-09-07

    申请号：US15062974

    申请日：2016-03-07

    Applicant: VORBECK MATERIALS CORP.

    Inventor： JOHN S. LETTOW ,  SRIRAM MANIVANNA ,  LARRY HURZON ,  TRENTICE V. BOLAR

    IPC: H01Q15/08 ,  H01Q15/00 ,  H01Q1/38

    CPC classification number: H01Q15/08 ,  H01Q25/008

    Abstract: Embodiments of the present invention relate to graphene-based Rotman lenses. In an embodiment, a lens is formed on a surface of a dielectric plate. The lens comprises a composition having individual sheets of graphene. The lens includes a plurality of first transmission lines extending from a first lens contour and a plurality of second transmission lines extending from a second lens contour. The plurality of first transmission lines each terminate at a first port. The plurality of second transmission lines each terminate at a second port. The first contour and the second contour are positioned opposite each other. The first port and/or the second port has a width of λ/2 or less. The individual graphene sheets form a three-dimensional interconnected network within the composition.

    MICROPHONE DIAPHRAGM
    50.
    发明申请
    MICROPHONE DIAPHRAGM 审中-公开
    麦克风胶片

    公开(公告)号：US20160295338A1

    公开(公告)日：2016-10-06

    申请号：US15087633

    申请日：2016-03-31

    Applicant: VORBECK MATERIALS CORP.

    Inventor： JOHN S LETTOW ,  DAN F SCHEFFER ,  KENNETH E FRITSCH

    IPC: H04R31/00 ,  H04R23/00 ,  H04R7/10

    CPC classification number: H04R31/003 ,  H04R7/10 ,  H04R23/008 ,  H04R2307/021 ,  H04R2307/023 ,  H04R2307/025

    Abstract: Embodiments of the present invention relate to graphene-based microphone diaphragms. In one embodiment, a acoustic wave sensor comprises a diaphragm comprised of a graphene-based composition, wherein the diaphragm has a first side at least partially covered with a reflective material. An emitter fiber is positioned proximate to the diaphragm, wherein the emitter fiber transmits light towards the first side. A collector fiber is positioned proximate to the diaphragm, wherein the collector fiber captures at least a portion of light reflected by the first side, wherein the collector fiber is in communication with a detector. A converter is in communication with the detector and converts a signal received by the detector to a digital signal for processing. The portion of light that is captured as a result of diaphragm distortion is different than the portion of light captured in the absence of diaphragm distortion. The graphene-based composition includes graphene sheets.

    Abstract translation: 本发明的实施例涉及基于石墨烯的麦克风隔膜。 在一个实施例中，声波传感器包括由石墨烯基组合物构成的隔膜，其中隔膜具有至少部分地被反射材料覆盖的第一侧。 发射光纤位于隔膜附近，其中发射光纤向第一侧透射光。 收集器光纤定位成靠近隔膜，其中收集器光纤捕获由第一侧反射的光的至少一部分，其中收集器光纤与检测器连通。 A转换器与检测器通信，并将由检测器接收的信号转换为数字信号进行处理。 由于膜片失真而被捕获的光的部分与在没有膜片变形的情况下捕获的光的部分不同。 基于石墨烯的组合物包括石墨烯片。

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