公开(公告)号：US20170262748A1

公开(公告)日：2017-09-14

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.

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.

公开(公告)号：US20190189365A1

公开(公告)日：2019-06-20

申请号：US16213967

申请日：2018-12-07

Applicant: VORBECK MATERIALS CORP.

Inventor： JOHN S. LETTOW ,  TERUMI N. MCKENNA ,  DAN F. SCHEFFER

IPC: H01H1/029

CPC classification number: H01H1/029 ,  H01H2201/036 ,  H01H2300/036

Abstract: Embodiments of the present invention relate to an electrical switch or sensor. In one embodiment, the electrical switch or sensor comprises a first electrical pole conductively coupled to a first side of a layer of variable resistance material. A second electrical pole is conductively coupled to a second side of the variable resistance material. The first side of the variable resistance material positioned distal to the second side of the variable resistance material. The variable resistance material comprises a polymer comprising a glass transition temperature of no higher than about 10° C. The first electrical pole and/or the second electrical pole comprise an electrically conductive ink or coating having a dispersion of graphene sheets. The graphene sheets completely comprise fully exfoliated single sheets of graphene. The graphene sheets comprise a lattice having heteroatoms incorporated therein and/or functional groups attached thereto.

公开(公告)号：US20170013361A1

公开(公告)日：2017-01-12

申请号：US14995286

申请日：2016-01-14

Applicant: VORBECK MATERIALS CORP.

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

IPC: H04R7/06 ,  H04R23/00 ,  H04R31/00 ,  H04R23/02

CPC classification number: H04R7/06 ,  H04R23/008 ,  H04R23/02 ,  H04R31/003 ,  H04R2307/023 ,  H04R2307/027 ,  H04S7/00 ,  H04S2420/01

Abstract: Embodiments of the present invention relate to microphones diaphragms. In one embodiment, a sensor comprising a diaphragm comprised of a composition having a plurality of individual graphene sheets. An emitter formed in a manner to transmit lights towards a surface of the diaphragm. A collector that captures at least a portion of light that is reflected by the diaphragm. A converter is in communication with the detector that converts a signal that is generated by the sensor to a digital signal for processing. The graphene-based composition includes graphene sheets.

Abstract translation: 本发明的实施例涉及麦克风隔膜。 在一个实施例中，传感器包括由具有多个单独石墨烯片的组合物组成的隔膜。 发射器以朝向隔膜表面透射光的方式形成。 捕获由膜片反射的至少一部分光的收集器。 A转换器与检测器通信，其将由传感器生成的信号转换为数字信号以进行处理。 基于石墨烯的组合物包括石墨烯片。