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| Number | Title | Issue Date |
| 8007563 | Waterjet removal of coverings from cables A method of impacting a flow of fluid, preferably water, onto a cable which comprises an outer jacket and a plurality of coverings on metal wires therewithin, to simultaneously remove a substantial majority of the outer jacket, and at least some of at least one of t... | 08/30/2011 |
| 7353863 | Method of surface treating aluminum alloy base body of heat exchanger and heat exchanger produced by the method A method of surface treating an aluminum alloy base body of an heat exchanger which method enables an etching procedure to be carried out uniformly and quickly and a corrosion-resistant chemical conversion coating to be formed, is effected by pretreating the Al heat... | 04/08/2008 |
| 7255798 | Recycling of used perfluorosulfonic acid membranes A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled mater... | 08/14/2007 |
| 7077918 | Stripping apparatus and method for removal of coatings on metal surfaces A coating is stripped off a work piece by applying a chromous and aluminiforous coat directly on the work piece and stripping the work piece with an alkaline solution containing a strong oxidant. A single-compartment system can be used, which includes a spray chambe... | 07/18/2006 |
| 7066187 | Modular treatment plant having horizontal drum machines A machine for treating bulk material of industrial volume parts, having a treatment drum which is arranged with a horizontal axis and can be driven in both directions of rotation around the axis, the treatment drum comprises a permanently open co-axial inlet apertur... | 06/27/2006 |
| 7011713 | Cascade extracting and solvent refreshing method for recycling jelly cables The method of continuously collecting jelly compounds from jelly filled cable is performed by recycling operation of a solvent by repeatedly heating, cleaning and condensing the recycling solvent used to deprive the jelly compounds of the jelly filled cable. The sol... | 03/14/2006 |
| 6992550 | Adjustable transmission line stub including a conductive fluid A circuit for processing radio frequency signals that includes an adjustable transmission line stub (104). The adjustable transmission line stub (104) has an input (106) at one end, an electrical length and a termination (112). The circui... | 01/31/2006 |
| 6972728 | Horn antenna with dynamically variable geometry An electromagnetic horn antenna (100). The antenna can include a horn housing having a throat portion (102), a tapered portion (106, 104) and an aperture 108. At least one cavity structure (142, 144, 138) can be provided within the... | 12/06/2005 |
| 6965286 | Tunable resonant cavity using conductive fluids A tunable resonant system (100) and a method for a varying the resonant characteristics of a resonant cavity (102). The resonant cavity is enclosed by a conductive material that has at least one aperture (104) for coupling the resonant cavity to... | 11/15/2005 |
| 6932855 | Method for recycling metals from swarf A method for recycling metals from swarf includes steps of removing oil in swarf by means of surfactant having a feature of strong hydrophilicity. The steps involves repeated stirring and washing, separating solid from liquid, and separating oil from water so as to ... | 08/23/2005 |
| 6932210 | Self-cleaning oscillating conveyor for deburring, dedusting and the onward transport of small parts A self-cleaning oscillating conveyor includes a vertical tube and a conveyor channel that is helically wound upwardly around the vertical tube with a corresponding electromagnetic oscillating unit and a casing tube, which surrounds the exterior of the conveyor chann... | 08/23/2005 |
| 6923102 | Washing device A washing installation includes a first washer (3) for washing slices of root vegetable with water, a second washer in the form of a rotating pipe (4) supplied with water at an infeed end for the slices of root vegetable washed during slicing, and a th... | 08/02/2005 |
| 6914575 | Selectable reflector and sub-reflector system using fluidic dielectrics A selectable sub-reflector antenna system (100) comprises a main reflector unit (101), a sub-reflector unit (111) disposed apart from the main reflector unit and having at least one cavity (116), and at least one fluidic dielectric having... | 07/05/2005 |
| 6906680 | Conductive fluid ground plane Antenna system (100) with dynamically adjustable ground plane spacing. The system includes at least one antenna radiating element (106, 108) and a first conductive ground plane (110, 120) spaced from radiating element (106, 108). The firs... | 06/14/2005 |
| 6444010 | Platinum group impurity recovery liquid and method for recovering platinum group impurity A mixed aqueous solution containing HCl with a concentration of 10 to 25% by weight, H2 O2 with a concentration of 2 to 5% by weight, and HF with a concentration of 0.01 to 2% by weight or a mixed aqueous solution containing H2 | 09/03/2002 |
| 6428602 | Method for recovering platinum from platinum-containing coatings on gas turbine engine components A method for recovering Pt from Pt-bearing coating on a gas turbine engine component. The component is contacted with a chemical stripping agent to dissolve away constituents of the coating and produce a Pt-bearing film of acid oxidation products at the s... | 08/06/2002 |
| 6103028 | Method of fabricating thinned free-standing metallic hydrogen-selective palladium-bearing membranes and novel pin-hole-free membranes formed thereby A new method of creating thin free-standing pin hole-free hydrogen-selective palladium-bearing membranes that comprises thinning cold-rolled membranes by chemical etching or electrochemically electrolyzing of at least one membrane surface, and novel membr... | 08/15/2000 |
| 5980725 | Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof, including a) subjecting the waste material to a mechanical processing step to improve the accessibility of said zinc layers to a subsequent chemic... | 11/09/1999 |
| 5792236 | Non-toxic liquid metal composition for use as a mercury substitute Liquid gallium or gallium alloy is utilized as a mercury substitute for a variety of applications. The liquid gallium or gallium alloy is either free of metal oxides or has only very low quantities of metal oxides.... | 08/11/1998 |
| 5405428 | Decontamination and/or surface treatment of metals The invention relates to a process of decontaminating metal (especially aluminum or aluminum alloy) scrap contaminated with organic material. The problem with such methods is that undue oxidation of the metal may take place as the decontamination proceeds... | 04/11/1995 |
| 5330558 | Method for removing chromium containing coatings from aluminum substrates The invention is a process for removing a chromium containing coating from an aluminum article. The chromium containing coating is removed from the aluminum article by contacting the aluminum article having the chromium containing coating with an alkaline... | 07/19/1994 |
| 5248329 | Biological processes for recovering heavy metals Disclosed is an efficient biological process for recovering heavy metals from refractory ore, and a process for removing heavy metal contaminants from the soil. The process utilizes a potato extract growth medium (PEGM) to greatly increase the efficiency ... | 09/28/1993 |
| 5248342 | Methods for processing battery waste and other lead-contaminated materials The present invention is directed to improved methods for processing battery wastes, battery casing debris and other lead contaminated materials. The improved processes of the present invention provide less environmentally stressful methods for recovering... | 09/28/1993 |
| 5232489 | Process for the recovery of metals and coating materials from composite materials The present invention relates to a process for the recovery of metals and coatings present on the metals from composite materials by means of the treatment of the composite materials with specific solvents at elevated temperatures, whereby the coating is ... | 08/03/1993 |
| 5019161 | Process for stripping plated plastic materials The present invention is a process for stripping coated plastic materials wherein the plastic is coated with a copper inner layer, and at least one outer layer formed of either nickel or chromium. Alternatively, the plastic can be coated with at least two... | 05/28/1991 |
| 4677085 | Process for removing metals from spent catalyst This invention pertains to a new process for removing metals, especially contaminant metals, from spent catalysts. Also, this invention pertains to a catalyst composite with metals removed by the new process, and to several uses for the catalyst, includin... | 06/30/1987 |
| 4673521 | Process for regenerating solder stripping solutions A method for the regeneration of a spent aqueous ammonium bifluoride-hydrogen peroxide solder stripping solution containing contaminant tin ions comprising adding potassium ions to the solution to precipitate a filterable tin-potassium compound.... | 06/16/1987 |
| 4659683 | Regeneration of inactive and poisoned platinum catalysts Noble metal catalyst, in particular platinum catalysts, which are applied on carriers and have become poisoned by metals as a result of being used for many years in the preparation of hydroxyl-ammonium salts by catalytic reduction of nitric oxide with hyd... | 04/21/1987 |
| 4578162 | Method for dissolving copper in the presence of iron The invention is a method for dissolving copper in the presence of iron comprising: (a) contacting the copper with an oxidant solution; (b) dissolving at least a portion of the copper into the solution; (c) controlling the copper ion concentration in the solution b... | 03/25/1986 |
| 4547227 | Method for preparing a steel charge from terneplate scrap metal A process is disclosed for treating terneplate scrap contaminated with combustibles, such as found in automobile gas tanks, to reduce the alloy content of the scrap to a sufficient level to permit the scrap to be reprocessed in an electric furnace. In the... | 10/15/1985 |
| 4483739 | Compositions and method for stripping gold from copper substrates An improved composition for selectively stripping gold from a metal substrate, especially copper metal, wherein the gold deposit is rapidly and effectively stripped without an attendant attack on the metal substrate. A minor amount of an organo mercapto c... | 11/20/1984 |
| 4431458 | Method for removing polyvinyl coatings from metal with tetrahydrofuran The method of recovering metal from a coated condition wherein the same is encased within polyvinyl chloride which comprises disposing the coated metal upon a mesh or other perforated support within a vessel, immersing the same in a bath of tetrahydrofura... | 02/14/1984 |
| 4426225 | Gold recovery method A method is disclosed for recovering visible gold plate from scrap material generated in the production of printed circuit boards and the like without dissolving the gold. The visible gold which is generally adhered to a substrate by a base metal underpla... | 01/17/1984 |
| 4426251 | Portable gold recovery apparatus and method for using same A self-contained portable device for quickly and efficiently recovering a precious metal, such as gold, from bimetallically coated substrate material, such as printed circuit board connectors or tabs. The base metal to which the desired precious metal is ... | 01/17/1984 |
| 4397690 | Process for recovering gold Gold is recovered from a material including gold and molybdenum or tungsten by contacting the material with an aqueous solution of hydrogen iodide and iodine to solubilize the gold without solubilizing the molybdenum or tungsten and recovering the gold fr... | 08/09/1983 |
| 4375984 | Recovery of gold from bromide etchants Gold, as well as other metals such as copper, titanium, and nickel, are etched from substrates by alkali metal iodide and bromide solutions also containing iodine and bromine, respectively. The dissolved gold is recovered as metallic gold either by precip... | 03/08/1983 |
| 4302246 | Solution and method for selectively stripping alloys containing nickel with gold, phosphorous or chromium from stainless steel and related nickel base alloys Improved solutions are provided for selectively stripping alloys containing nickel with gold, phosphorous or chromium from substrates formed from alloys containing iron with chromium and in some instances nickel, or nickle rich, chromium bearing alloys, s... | 11/24/1981 |
| 4274908 | Cyanide free solution and process for removing gold-nickel braze An effective cyanide free solution and process for removing gold-nickel braze alloys from superalloy parts are described. The solution contains about 50% nitric acid with intentional additions of materials which ionize to provide chloride ions, sulfate io... | 06/23/1981 |
| 4173493 | Reclamation of conductive wire from cable A process and apparatus for the recovery, for re-use, of metallic conductors such as copper and aluminum from insulated cable, particularly scrap telephone cable, the process utilizing a unique combination of mechanical and chemical operations protective ... | 11/06/1979 |
| 4042451 | Selected stripping of nickel-iron alloys from ferrous substrates A composition and process for selectively removing nickel and nickel alloys with iron and/or cobalt from a surface of a metal substrate which comprises contacting said metal surface with an aqueous bath containing: A. at least one nitro substituted organic com... | 08/16/1977 |
