...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8031037 | Three-dimensional microstructures and methods of formation thereof Provided are three-dimensional microstructures and their methods of formation. The microstructures are formed by a sequential build process and include microstructural elements which are affixed to one another. The microstructures find use, for example, in coaxial t... | 10/04/2011 |
| 7948335 | Coaxial waveguide microstructure having conductive and insulation materials defining voids therein Provided are coaxial waveguide microstructures. The microstructures include a substrate and a coaxial waveguide disposed above the substrate. The coaxial waveguide includes: a center conductor; an outer conductor including one or more walls, spaced apart from and di... | 05/24/2011 |
| 7656256 | Three-dimensional microstructures having an embedded support member with an aperture therein and method of formation thereof Provided are three-dimensional microstructures and their methods of formation. The microstructures are formed by a sequential build process and include microstructural elements which are affixed to one another. The microstructures find use, for example, in coaxial t... | 02/02/2010 |
| 7649432 | Three-dimensional microstructures having an embedded and mechanically locked support member and method of formation thereof Provided are three-dimensional microstructures and their methods of formation. The microstructures are formed by a sequential build process and include microstructural elements which are mechanically locked to one another. The microstructures find use, for example, ... | 01/19/2010 |
| 7259640 | Miniature RF and microwave components and methods for fabricating such components RF and microwave radiation directing or controlling components are provided that may be monolithic, that may be formed from a plurality of electrodeposition operations and/or from a plurality of deposited layers of material, that may include switches, inductors, ant... | 08/21/2007 |
| 7255002 | Tank seal for guided wave radar level measurement A microwave level gauge for measuring a level of a process material in a tank includes a ceramic seal and a microwave conductor. The ceramic seal is disposed adjacent to an opening in the tank and adapted to isolate circuitry from the process material. The microwave... | 08/14/2007 |
| 7252515 | Non-oriented wire in elastomer electrical contact A method and apparatus for interconnecting an electronic module to a substrate through resilient wire conductors in an interposer arrangement. A carrier layer of insulating material with an array of apertures, arranged to align with both the electrical pads on an el... | 08/07/2007 |
| 7204697 | Non-oriented wire in elastomer electrical contact A method and apparatus for interconnecting an electronic module to a substrate through resilient wire conductors in an interposer arrangement. A carrier layer of insulating material with an array of apertures, arranged to align with both the electrical pads on an el... | 04/17/2007 |
| 7164333 | Standing wave barrier A standing wave barrier for at least one radio frequency cable having a cable axis has at least one metallic base web that proceeds parallel to the cable axis from a first web end to a second web end. The web ends are coupled to one another in terms of radio frequen... | 01/16/2007 |
| 7148772 | Coaxial waveguide microstructures having an active device and methods of formation thereof Provided are coaxial waveguide microstructures. The microstructures include a substrate and a coaxial waveguide disposed above the substrate. The coaxial waveguide includes: a center conductor; an outer conductor including one or more walls, spaced apart from and di... | 12/12/2006 |
| 7145414 | Transmission line orientation transition A circuit structure may include first and second transmission lines, each with a center conductor extending along or between one or more spaced-apart conducting surfaces. A conducting surface, such as a ground, reference, or signal-return plane, of the first transmi... | 12/05/2006 |
| 7075387 | Directional coupler, antenna interface unit and radio base station having an antenna interface unit A directional coupler for radio frequency application, comprising: an input (110) for receiving a radio frequency input signal; a port (120) for delivering a radio frequency output signal; a first elongated conductor (150; 150:1), suspended in a... | 07/11/2006 |
| 7030720 | Floating microwave filter in a waveguide structure A floating microwave filter in a waveguide structure comprises filtering elements sandwiched between two foam half-bars that are placed inside a waveguide. The filtering elements are metal features etched in the surface of one of the two foam half-bars and the waveg... | 04/18/2006 |
| 7012489 | Coaxial waveguide microstructures and methods of formation thereof Provided are coaxial waveguide microstructures. The microstructures include a substrate and a coaxial waveguide disposed above the substrate. The coaxial waveguide includes: a center conductor; an outer conductor including one or more walls, spaced apart from and di... | 03/14/2006 |
| 6972647 | Embedded shielded stripline (ESS) structure using air channels within the ESS structure A technique for facilitating signal transmission at high signal frequencies in a multi-layer substrate is disclosed. In one embodiment a multi-layer substrate comprises a conductor or pair of conductors, a first dielectric layer on a first side of the conductor or p... | 12/06/2005 |
| 6972648 | Broadband coaxial transmission line using uniformly distributed uniform mismatches A coaxial transmission line having intermediary segments of equal lengths and equidistant insulator supports is provided. The transmission line segment and insulator support spacing is designed to cause any reflection artifacts to occur outside or between desired ch... | 12/06/2005 |
| 6956164 | Inner conductor supports for rigid coaxial transmission lines An support for coaxial transmission lines is described, having a reduced mass and being configured to reduce bending stresses when subject to insertion or axial load effects. ... | 10/18/2005 |
| 6949991 | Embedded shielded stripline (ESS) structure using air channels within the ESS structure A technique for facilitating signal transmission at high signal frequencies in a multi-layer substrate is disclosed. In one embodiment a multi-layer substrate comprises a conductor or pair of conductors, a first dielectric layer on a first side of the conductor or p... | 09/27/2005 |
| 6917373 | Context sensitive labels for an electronic device A control panel unit for a computing device includes buttons having characteristics that define individual button states. Upon actuation of a button, the viewable states of the buttons may change. A portion of the button may be illuminated to represent the state and... | 07/12/2005 |
| 6870448 | Adjustable coaxial support A movable support for a coaxial structure, such as a coaxial feed-through, connector, or cable, allows adjusting the height of a center pin of the coaxial structure relative to the surface of a high-frequency planar microcircuit mounted on a base. The height of the ... | 03/22/2005 |
| 6847274 | Multilayer coaxial structures and resonator formed therefrom The idea of the invention is to fabricate a multilayer coaxial transmission line into a printed circuit. The outermost conductor is fabricated by conductive conduit strips in different layers, using conductive via posts in isolation layers connecting the strips. The... | 01/25/2005 |
| 6822532 | Suspended-stripline hybrid coupler A suspended stripline device and method for manufacturing thereof. The device includes first and second conductive traces disposed on a dielectric substrate, each of the first and second conductive traces having a first edge and a second edge, and a housing at least... | 11/23/2004 |
| 6816039 | Coaxial split-bead glass-to-metal seal for high frequency transmission line Support structure for high frequency coaxial transmission line. A conductive bead ring is split in two halves longitudinally, containing a relief for excess glass flow and provision for locking the halves together. A glass dielectric surrounds the center conductor, ... | 11/09/2004 |
| 6816040 | Broadband rigid coaxial transmission line A broadband coaxial transmission line is formed by joining smaller coaxial transmission lines having particularly formulated lengths. Insulating supports in the transmission line are situated in a prescribed manner to reduce reflections along the transmission line. ... | 11/09/2004 |
| 6765461 | Asymmetric support for high frequency transmission lines Asymmetric support for high frequency transmission lines. An asymmetrical support structure coaxially supports a center conductor over a ground plane using a dielectric material. Absorbing material between the dielectric and the outer conductor reduces the effects o... | 07/20/2004 |
| 6621384 | Technology implementation of suspended stripline within multi-layer substrate used to vary time delay and to maximize the reach of signals with high data rates or high frequencies A technique for providing a multi-layer substrate which is capable of signal transmission at multiple propagation speeds is disclosed. In one embodiment, the technique is realized by constructing a multi-layer substrate by creating air channels in dielect... | 09/16/2003 |
| 6603376 | Suspended stripline structures to reduce skin effect and dielectric loss to provide low loss transmission of signals with high data rates or high frequencies A technique for improving signal reach and signal integrity when using high bit rates or high signal frequencies is provided. A multi-layer substrate comprises a conductor having a continuous main path and discrete spaced edges protruding from opposing ed... | 08/05/2003 |
| 6465741 | Spacer apparatus for high voltage lead A spacer apparatus (10) for spacing a high voltage lead (25) from other components in an electrical device includes a hub (11), a plurality of spokes (15-18) extending radially outwardly from the hub (11), and first and second spacer rim segments (19, 20)... | 10/15/2002 |
| 6400235 | Radio frequency, millimeter-wave or microwave device and method of making same A coupler includes one or more conductors and a support structure for the conductors within the coupler. The conductors are inserted through oblong holes in the support structure while the support structure is in an assembling position. When the support s... | 06/04/2002 |
| 6316719 | Fabrication of circuit modules with a transmission line Interconnections are made through a planar circuit by a monolithic short-circuited transmission path which extends from a circuit portion of the planar circuit to the opposite side. The opposite side is ground sufficiently to remove the short-circuiting p... | 11/13/2001 |
| 6031188 | Multi-circuit RF connections using molded and compliant RF coaxial interconnects Interconnections are made through a planar circuit by a monolithic short-circuited transmission path which extends from a circuit portion of the planar circuit to the opposite side. The opposite side is ground sufficiently to remove the short-circuiting p... | 02/29/2000 |
| 5945897 | Compliant RF coaxial interconnect Interconnections are made through a planar circuit by a monolithic short-circuited transmission path which extends from a circuit portion of the planar circuit to the opposite side. The opposite side is ground sufficiently to remove the short-circuiting p... | 08/31/1999 |
| 5831440 | SWR bridge configuration enabling extended precision and measurement range when measuring through a precision coax airline A microwave test kit including a SWR bridge with one or more accompanying precision airlines for connecting between the test port of the SWR bridge and a test device. The SWR bridge includes a branch opposite its test port which includes an adapter having... | 11/03/1998 |
| 5828272 | Transmission line for distribution network housing A conducting housing for use in a coaxial cable distribution system is of larger length than width and defines an RF signal path therein. A part of the RF signal path is the inner conductor of inner and outer approximately co-extensive conductors. The inn... | 10/27/1998 |
| 5796317 | Variable impedance transmission line and high-power broadband reduced-size power divider/combiner employing same A variable impedance coaxial transmission line having a center conductor of constant cross-section, an outer conductor surrounding and coaxial with the center conductor and spaced radially therefrom, and a variable dielectric constant material between the... | 08/18/1998 |
| 5793215 | 6 port TEM cell and radiation field immunity measuring system using the same A 6 port TEM cell for measuring garbage EMI/EMS of an electrical and electronic equipment which can form an electromagnetic field of horizontal/vertical polarization using characteristic that internal electric field polarization is changed according to fe... | 08/11/1998 |
| 5790003 | Two part spacer for a high-frequency coaxial cable A spacer is indicated for a high-frequency coaxial cable with an inner conductor, a tube-shaped outer conductor and a dielectric cavity located between the two conductors which, through the use of different materials, has a higher thermal load capacity in... | 08/04/1998 |
| 5790002 | Two part spacer for a high-frequency coaxial cable having a protrusion on one of the parts A spacer is indicated for a high-frequency coaxial cable with an inner conductor, a tube-shaped outer conductor and a dielectric cavity located between the two conductors, which has a higher thermal load-carrying capacity in the inner conductor area than ... | 08/04/1998 |
| 5724012 | Transmission-line network Transmission-line network of the foam stripline type. To reduce dielectric losses in the foam, part of the foam in the region of the stripline is removed so that the wave properties of the transmission-line network are not impaired. The removed foam forms... | 03/03/1998 |
| 5638035 | Coaxial cable distribution network having a reversible directional coupler A conducting housing (to be closed by a lid) for a coaxial cable distribution network has a common port and one of an aerial or pedestal port. A motherboard carries an RF circuit and a transfer switch. In one setting of the transfer switch the RF circuit ... | 06/10/1997 |