Abstract: A switchable Frequency Selective Surface (FSS) in which the switchable elements are Plasma-shells. Plasma-shells as described herein allow for control or ‘reconfiguration’ of the FSS electromagnetic (EM) properties.

Abstract: A switchable Frequency Selective Surface (FSS) in which the switchable elements are Plasma-shells. Plasma-shells as described herein allow for control or ‘reconfiguration’ of the FSS electromagnetic (EM) properties.

Abstract: A switchable Frequency Selective Surface (FSS) in which the switchable elements are Plasma-shells. Plasma-shells as described herein allow for control or ‘reconfiguration’ of the FSS electromagnetic (EM) properties.

Abstract: A detector element with one or more attached antenna for the detection of high energy transmissions, including microwaves, lasers, electromagnetic signals, RF waves, radiation, and/or other transmissions emitted by a source including a weapon system. The element may also be used as a safety device to warn and alert personnel working around high energy devices of electromagnetic leaks.

Abstract: An AC or DC microdischarge device that comprises a fluorescent conversion material (FCM) and a multiplicity of gas filled microcavity cells, each cell being connected to two or more electrodes to cause a gas discharge in the cell, the gas discharge providing photons that excite the FCM such that the FCM emits IR. In one embodiment, the electronic circuitry for each cell comprises at least one integrated active component such as a transistor. Other active components may be included such as a high speed shift register, addressing logic, and/or control circuits. In another embodiment, the microcavity and active components are made from the same substrate such as the same silicon wafer. The microdischarge device may include one or more electrodes encapsulated in a dielectric. The electrodes are configured to ignite a microdischarge in a microcavity cell when an AC or a pulsed DC excitation potential is applied between the electrodes connected to the cell.

Abstract: A gas filled detector shell with attached antenna for the detection of high energy transmissions, including microwaves, lasers, electromagnetic signals, RF waves, radiation, and/or other transmissions emitted by a source including a weapon system. The shell may also be used as a safety device to warn and alert personnel working around high energy devices of electromagnetic leaks.

Abstract: An AC or DC PDP containing a fluorescent conversion material (FCM) that produces IR when excited by a gas discharge. In one embodiment, the fluorescent conversion material is rare earth doped chalcogenide. The PDP may comprise a multiplicity of plasma-sells or plasma-tubes on a substrate, each plasma-shell or plasma-tube containing FCM.

Abstract: A gas plasma antenna with a rigid, flexible, or semi-flexible substrate and an improved method of generating a uniform electron density. The antenna comprises a gas discharge device containing a multiplicity of microcavities, each microcavity containing an ionizable gas for providing a microdischarge. Each microdischarge acts alone or in concert with other microdischarges to form a dipole or pattern of dipoles.

Abstract: An apparatus is provided for introducing a mixture of dry catalyst and a hydrocarbon liquid into a polymerization reactor vessel. The apparatus comprises a enclosed mixing tank with rotating mixing blades and a rotatable shot valve spaced below the mixing tank. The shot valve can be rotated from a first position in communication with an opening in the lower portion of the mixing tank to a second position in communication with a hydrocarbon feed conduit that provides hydrocarbon liquid to the polymerization reactor vessel. A bypass conduit is provided for introducing hydrocarbon liquid from the hydrocarbon feed conduit into the mixing tank wherein the interior of the mixing tank is maintained at the same pressure as the hydrocarbon feed conduit.

Abstract: A process to convert an alkene to oligomerized, aromatized and isomerized products comprises contacting such alkene under conversion conditions with an AMS-1B borosilicate catalyst composition.

Abstract: Apparatus is disclosed for separating two audio signals on two input channels and combining them to provide three output signals on three output channels in which the separation is based on comparisons of the average absolute values of the highest amplitudes of the signals on the input channels with the average absolute value of the difference between the signals on the input channels.

Abstract: An audio signal amplitude detector for applying stereo audio signals above a predetermined amplitude to at least one pair of speakers. The audio signal for each channel is amplified and compared with two reference voltages. When the amplified audio signal is below a lower one of the reference voltages, the signal is blocked to the connected speaker amplifier. As the amplitude of the audio signal increases between the first and second reference voltages, an increasing portion of the audio signal is applied to the connected speaker amplifier until a maximum signal is applied when the amplitude is above the second reference voltage.

Abstract: Apparatus and process is herein disclosed by which a polymerizable monomer or mixture thereof can be economically and efficiently converted to polymeric substances with a high yield catalyst and, optionally, co-catalyst by a vapor phase, essentially isobaric, polymerization process using a horizontal, stirred-bed, quench-cooled, essentially total reactor off-gas recycle reactor.

Abstract: Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising:(a) a horizontal, stirred reactor of substantially circular cross section containing a centrally-located drive shaft extending longitudinally through said reactor to which are attached a plurality of adjacently located paddles, which paddles cause essentially no forward or backward movement of the particulate matter contained in said reactor and extend transversely within and to a short distance from the internal surfaces of said reactor, said reactor being divided into two or more individually polymerization-temperature controllable polymerization sections by one or more barriers constructed to allow free gas mixing within said reactor and control particulate movement between said sections;(b) driving means for said drive shaft;(c) one or more outlets for removal of reactor off-gases situated along the topward part of said reactor;(d) one or more vapor recycle inlets situated along the bottomward portion of said rea

Abstract: A process for drying polymer slurry produced in slurry or bulk phase polymerization comprising removing, in a gas stream which contains polymerizable monomer, easily vaporizable liquid components from a stirred drying zone containing a large, in comparison with the volume of slurry from said polymerization added to said zone, amount of solid polymer particulate to form substantially dry polymer particulate using in essential part polymerization heat generated in said zone by carrying out therein a fraction of the overall amount of polymerization. The resulting polymer can be finished conventionally or by transferring said particulate to a melting zone in which an easily transferable polymer melt is formed, said melting accomplished in substantial part using polymerization heat generated in said melting zone by a fraction of the overall amount of polymerization.

Abstract: Adding a finely divided oxide to a terminal olefin polymerization catalyst comprising a hydrocarbon-soluble transition metal compound and a Group II or III metal organic compound reduces the amount of fibrous polymer produced.

Abstract: Simultaneous precise addition of a plurality of non-compatible substances to a mixing zone is achieved by forming a dispersion containing the non-compatible substances and subsequently injecting the dispersion into such zone.

Abstract: An essentially total reactor off-gas recycle process essentially isobaric in nature is herein disclosed for use in polymerizations wherein a polymerizable monomer or a mixture thereof is polymerized in a vapor state polymerization process using a stirred-bed, quench-cooled, horizontal reactor.

Abstract: A melt finish process is disclosed herein for working up solid, particulate polymer from a vapor state polymerization reactor, which reactor employs high yield catalysts, whereby the polymer is moved out of the reactor and into a post polymerization zone characterized by essentially adiabatic polymerization and the heat of such polymerization is used in raising the temperature of and melting said solid, particulate polymer to form molten polymer for further processing.

Abstract: A melt finish process is disclosed herein for working up solid, particulate polymer from a vapor state polymerization reactor, which reactor employs high yield catalysts, whereby the polymer is moved out of the reactor and into a post polymerization zone characterized by essentially adiabatic polymerization and the heat of such polymerization is used in raising the temperature of and melting said solid, particulate polymer to form molten polymer for further processing.