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| Number | Title | Issue Date |
| 7816814 | Bi-directional power converters A bi-directional power converter for cryogenic operation based on a bi-directional cryo-MOSFET switch. Cryogenic power electronics lends itself easily to bi-directional topologies, and brings higher efficiencies, further reductions in switching speed, higher-frequen... | 10/19/2010 |
| 7619325 | Ring configuration for compact power supply of power electronics An ultra compact ring topology puts the output terminals of solid state switches physically at the center of a circuit with the switches surrounded by voltage busses. The switches are symmetrically arranged around the output bus, the voltage busses are filtered (dec... | 11/17/2009 |
| 7453342 | Method of controlling and stabilizing laser output This invention describes a means by which lasers and laser beam controllers mounted on moving vehicles or other unstable platforms can be isolated from vibrations. By magnetically levitating the entire laser or just the beam controller hardware, targeting efficiency... | 11/18/2008 |
| 7408764 | Cryogenic capacitors This invention describes a means by which performance characteristics of capacitors can be improved. This is achieved by reducing the temperature, preferably but not exclusively to cryogenic temperatures below 100 K. The dielectric strength, dielectric losses, equiv... | 08/05/2008 |
| 7391133 | Hybrid switch An electrical switching topology for a hybrid switch provides extremely low losses in both cryogenic and non-cryogenic electronic systems. In this switch having switch modules connected in parallel, switching losses in a first module are separated from conduction lo... | 06/24/2008 |
| 7374536 | Method for analysis of pain images A method uses body images and computer hardware and software to collect and analyze clinical data in patients experiencing pain. Pain location information is obtained by the drawing of an outline of the pain on a paper copy or electronic display of the body image. C... | 05/20/2008 |
| 7371968 | Detachable superconducting cable A detachable superconducting lead includes a vacuum-sealed thermal transition through which a stabilized conductor passes. Two identical leads are attached and surrounded by a sealed Dewar and allowed to cool either naturally or by way of a cooling element. Detachin... | 05/13/2008 |
| 7369377 | Snubbers for low temperature power electronics Switching losses and conduction losses are isolated by networks which are partially cryogenic and partially at room temperature. Switching losses are independent of temperature. Advantageously the switching losses are taken in a snubber network at room temperature a... | 05/06/2008 |
| 7352233 | Efficient thyristor-type power switches The highest-power switches now available are based on thyristor-type devices: GTOs (Gate turn-off thyristors), MTOs (MOS controlled turn-off thyristors), IGCTs (Integrated gate commutated thyristors), and the new ETOs (Emitter turn-off thyristors). These devices han... | 04/01/2008 |
| 7193336 | Switchable low-loss cryogenic lead system A method and apparatus for reducing conductive thermal losses in high-current cryogenic power electronics systems needing large cables to interface between warm and cold environments. Thermal losses increase with increasing cross-sectional area. The total current at... | 03/20/2007 |
| 7126810 | Cryogenic capacitors This invention describes a means by which performance characteristics of capacitors can be improved. This is achieved by reducing the temperature, preferably but not exclusively to cryogenic temperatures below 100 K. This is based on the observation that the dielect... | 10/24/2006 |
| 7091799 | Hybrid bypass networks for low-loss cables and ripple filter chokes Losses are reduced in electrical conductors and filters, especially those made with superconducting cables or inductors, which carry currents having both direct current (DC) and alternating current (AC) portions as in rectifier busses and power distribution systems.... | 08/15/2006 |
| 6879852 | Low-cost magnetic resonance imaging (MRI) Cryo-system Sub-systems and components of a MRI system have enhanced electrical efficiency, faster operation, reduced physical metrics, by operating at cryogenic temperatures and/or incorporating superconducting elements. A plurality of sub-systems and a super-conducting magnet... | 04/12/2005 |
| 6836112 | Cantilever-free magnetic resonance force microscope Magnetic resonance force microscopy (MRFM) is a technology capable of detecting the magnetic resonance of a small number of spins and, potentially, a single spin of an electron or nucleus. Most methods use soft cantilevers with microscopic dimensions (microns) which... | 12/28/2004 |
| 6827370 | Protective ski pole The ski pole has normal strength when the pole is normally gripped at its handle and reduced strength when not gripped. The poles permanently deform when a predetermined level of excessive bending force is applied. The pole shaft is hollow with a short circumferenti... | 12/07/2004 |
| 6798083 | Cryogenic power conversion for fuel cell systems especially for vehicles A cryogenic power conditioning system for fuel cells is proposed which is cooled by liquid hydrogen or liquid natural gas (methane) used to power these fuel cells, or by liquid nitrogen supplied by high-temperature superconducting cables. The main applications are i... | 09/28/2004 |
| 6691461 | Shutter mounting assembly including a support bar and width-adjusting strips A plurality of strips are releasably interconnected to a support bar as an assembly for mounting a shutter within a window frame. Male and female connectors such as tongue and groove or pin and socket connectors interconnect the strips to one another and ... | 02/17/2004 |
| 6690572 | Single layer electronic capacitors with very thin dielectrics and methods to produce same A SLC has a thin brittle ceramic dielectric layer less than 0.0035 inches thick and as low as 0.0005 inches or less. Electrodes are thick and strong enough either singly or together to give the structure required physical strength for manufacture, handlin... | 02/10/2004 |
| 6684454 | Support mechanism for tilted window sash A cord tensioned by a spring supports the sash of a hung window in a stationary position while the sash is tilted for cleaning. The cord pulls a pulley attached to the spring which extends as the sash is further tilted. A tubing houses the spring and pull... | 02/03/2004 |
| 6679890 | Method and apparatus for augmentation of the femoral neck Combining an implant and cement for prophylactic and/or preventative use for femoral neck augmention. A hole is drilled into the femoral neck. The hole is filled with an uncured filler cement after loose materials have been removed from the hole. Then, an... | 01/20/2004 |
| 6611540 | Diode-laser system for hyperpolarized He-3 and Xe-129 gas generation and other applications Commercially available diode lasers are operated immersed in liquid nitrogen (LN2, 77 K), in another cryo-fluid, or are cryo-cooled (77 K-250 K) by conduction in all high-power (>0.1 W) applications. The result is higher output power per diode chip area, ... | 08/26/2003 |
| 6545880 | Cryogenic power distribution system for large structure Energy distribution and conversion system suitable for high-rise structures, large building complexes, factories, ships, airplanes, city blocks, etc., based on: High-Temperature Superconductors (HTS) and Cryogenic Power and Energy Conversion (CPEC) using ... | 04/08/2003 |
| 6005159 | Protective covering for body lesions A protective covering for a lesion comprises a frame for adhering to the skin of a patient and for surrounding a lesion. The frame has a central opening and a generally L-shaped cross section including a wall, and a base that surrounds the lesion and atta... | 12/21/1999 |
| 4592668 | Method for stamping indicia on materials In a marking system for stamping materials such as aluminum strip, a pulse of determined energy is supplied to a solenoid, to impart a determined kinetic energy to a die. The die is guided to dissipate substantially all of this kinetic energy in the defor... | 06/03/1986 |
| 4456134 | Apparatus for containment of carbonated beverages A container comprised of a top member having an opening for filling and pouring in the conventional manner and a bottom member integrally connected together by a flexible compressible or collapsible mid-section. Means are also provided for externally conn... | 06/26/1984 |
