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| Number | Title | Issue Date |
| 7918926 | COrecovery system and method A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to t... | 04/05/2011 |
| 7622681 | Polygonal overhead cable An overhead cable including a plurality of element wires stranded to form a naked stranded cable, which has a cross-sectional shape of an equilateral polygon inscribed in a circle having a diameter of 18.2 mm to 38.4 mm as a fundamental cross-sectional shape, in whi... | 11/24/2009 |
| 7517605 | Solid oxide fuel cell and separator A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the... | 04/14/2009 |
| 7292424 | Arcing horn device An object of the present invention is to provide an arcing horn system having a highly efficient dynamic current shutoff property including a dynamic current shutoff capability, for example, enough for the short circuit fault and other object thereof is to provide a... | 11/06/2007 |
| 7220515 | Pressure fluctuation prevention tank structure, electrolyte circulation type secondary battery, and redox flow type secondary battery A simplified, pressure-variation preventing tank structure capable of preventing pressure variations in a gas phase portion resulting from temperature variations, without bringing stored liquid into contact with air. This pressure-variation preventing structure incl... | 05/22/2007 |
| 6872376 | Modified vanadium compound, producing method thereof, redox flow battery electrolyte composite and redox flow battery electrolyte producing method A modified vanadium compound characterized in that vanadium sulfate (III), or a mixed vanadium compound of vanadium sulfate (III) and vanadyl sulfate (IV) contains excessive sulfuric acid other than sulfate group composing the vanadium sulfate (III) or the vanadyl s... | 03/29/2005 |
| 6761945 | Electrolyte tank and manufacturing method thereof An electrolyte tank which allows effective use of existing space of various shapes is provided. An electrolyte tank is formed by laminating one or more layers of coated fabric provided by coating a woven fabric of organic fiber with rubber or plastic and processing ... | 07/13/2004 |
| 6734461 | SiC wafer, SiC semiconductor device, and production method of SiC wafer A SiC wafer comprises a 4H polytype SiC substrate 2 in which the crystal plane orientation is substantially {03-38}, and a buffer layer 4 composed of SiC formed over this SiC substrate 2. The {03-38} plane forms an angle of approximately 35° wi... | 05/11/2004 |
| 6613298 | Trivalent and tetravalent mixed vanadium compound producing method and vanadium electrolyte producing method The present invention provides method of producing a trivalent and tetravalent mixed vanadium compound having excellent solubility with sulfuric acid directly from a tetravalent or pentavalent vanadium compound by using a reducing agent,and a method of pr... | 09/02/2003 |
| 6563234 | Power system stabilization system and method employing a rechargeable battery system A power system stabilization system is provided between power generation equipment significantly fluctuating in output and a power system required to maintain a predetermined voltage. In the power system stabilization system, a voltage detection device an... | 05/13/2003 |
| 6461772 | Battery diaphragm A battery diaphragm having superior chemical resistance, low resistance, superior ion selective permeability and high mechanical strength is provided. The battery diaphragm is formed of a composite film including a complex of a porous base substrate (A) w... | 10/08/2002 |
| 6310702 | Testing device for multistage multi-branch optical network A testing device performs testing on a multistage multi-branch optical network, which contains optical lines (such as optical fibers) that are connected together at connection points (e.g., optical couplers) in a multistage multi-branch manner. An OTDR me... | 10/30/2001 |
| 6129849 | Process for accelerating reaction of ozone with AM catalyst In treatment of water by injection of ozone into the water for removal of harmful matters, odor matters, and color matters therein, either or both of a nonyl phenol and a cresol are added to the water to be treated. The nonyl phenol is added together with... | 10/10/2000 |
| 6114871 | Abnormality detecting method and apparatus for electrical equipment, particularly for a rotating electric machine A defect detecting apparatus for monitoring an electrical equipment for defects, the electrical equipment having a resonance frequency. The defect detecting apparatus includes a sensor operatively connected to the electrical equipment for sensing a signal... | 09/05/2000 |
| 5991181 | Power conversion apparatus A power conversion apparatus has a voltage type power convertor, a power control circuit for outputting a first active power reference signal for the voltage type power convertor based on a power reference value Pref and a detection value P of a power det... | 11/23/1999 |
| 5798087 | Method of producing gypsum After hydrogenation and desulfurization treatment of raw fuel in the desulfurization unit 1, the product is separated in the acidic gas separator 2 into fuel and a hydrogen sulfide-containing gas, and the hydrogen sulfide-containing gas is subjected to co... | 08/25/1998 |
| 5789094 | Fuel cell and sealing parts therefore A bipolar plate is designed to provide a gas seal 16 around an electrode and gas seals 17a around fuel gas manifolds on the same plane and to separate the gas seal 16 and gas seals 17a around oxidant gas manifolds 4, 6 with hollowed parts on an anode elec... | 08/04/1998 |
| 5668458 | Synchronous machine with harmonics dampening A synchronous machine effectively absorbs higher harmonics in an AC system to which the synchronous machine is linked. The synchronous machine includes a damper winding, disposed on each magnetic pole and constituting by itself an independent closed circu... | 09/16/1997 |
| 5444746 | Contamination inspecting device for portable articles The invention provides an improved contamination inspecting device which can carry out continuous, automatic inspection of portable articles both large and small regardless of their shape. The device incorporates a conveying means for carrying the article... | 08/22/1995 |
| 5318758 | Apparatus and process for removing carbon dioxide from combustion exhaust gas An apparatus and a process for removing CO2 from a combustion exhaust gas, by effecting counterflow contact of aqueous alkanolamine solution with the combustion exhaust gas to absorb CO2 from the gas in the alkanolamine solution and ... | 06/07/1994 |
| 5160244 | Pump system operable by variable-speed control A variable-speed pump system comprising: a hydraulic machine having a flow adjusting means and including at least a pumping function; a rotary machine operatively connected to the hydraulic machine and including at least a motor function for rotating the ... | 11/03/1992 |
| 5100743 | Internal reforming type molten carbonate fuel cell A internal reforming type molten carbonate fuel cell is provided in which the process or flow direction of the reforming reaction of a raw fuel gas in the reforming reaction section is countercurrent to the flow direction of the oxidant gas in the cell re... | 03/31/1992 |
| 5075546 | Magnetic field measurement apparatus A magnetic field measurement apparatus with high sensitivity and high accuracy in which a Bi-substituted rare-earth iron garnet crystal with a high and no temperature dependent sensitivity constant grown by liquid phase epitaxy is used for a magneto-optic... | 12/24/1991 |
| 4999571 | Current and/or voltage detector for a distribution system A current and voltage detector for a distribution system is provided with a lower section, an upper section and a fastener for combining the lower and upper sections into one body. The lower section comprises: a first groove for receiving an electric wire... | 03/12/1991 |
| 4920277 | Control system for a variable speed hydro-power plant apparatus A variable speed hydro-power plant includes a pump turbine (2) having a S-shaped characteristics at the turbine operation. A current time turbine operating point is grasped on a turbine characteristics diagram of the pump turbine (2). A limit operation ch... | 04/24/1990 |