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| Number | Title | Issue Date |
| 6838208 | Modified thermal galvanic cell This invention is directed to modified thermal galvanic cells for conversion of heat into useful electrical energy by electrochemical action using thermal and concentration differences to enhance the power produced by the cell. The cells of the invention comprise ac... | 01/04/2005 |
| 6730802 | Silicon carbide precursor The compound 2,4,6-trimethyl-2,4,6-trisila heptane, the preparation thereof, and the use thereof as a silicon carbide precursor in chemical vapor deposition and infiltration procedures are disclosed. ... | 05/04/2004 |
| 6513250 | Micro positioning device with shared actuators A device for micro positioning of small objects using an actively generated friction force field. Positioning is achieved by sequentially holding the object by a gripper or holding means while moving the gripper on a manipulation surface by means of piezo... | 02/04/2003 |
| 6409434 | Device for manipulation of objects on a pneumatic surface This invention provides a pneumatic active surface capable of sensing, locating, and moving an object on the surface by selective activation of individual segments or portions of the surface. The active surface comprises an array of pneumatic conduits, wh... | 06/25/2002 |
| 6136461 | Thermoelectric power cells Thermocells, also known as thermogalvanic electrochemical cells having one or more hot half-cells, electrolyte salt supplying reservoirs, porous inserts in the electrolyte conduits produce improved power output performance are disclosed.... | 10/24/2000 |
| 5750036 | Composition and method for ground water remediation Addition of ferrous ions to clay and ferric minerals in the ground creates in situ reactive zones which dehalogenate halogenated contaminants in ground water flowing through the reactive zone.... | 05/12/1998 |
| 5736813 | PH control of leachable mercury in fluorescent lamps The formation of leachable mercury upon disposal or during TCLP testing of mercury vapor discharge lamps is substantially prevented by incorporation of a pH control agent in the lamp structure or in the test solution to provide a pH of about 5.5 to about ... | 04/07/1998 |
| 5705786 | Underwater welding Persistent compressive stresses sufficient to suppress hot cracking, reheat cracking and stress corrosion cracking are developed in welds containing alloys of plural materials by quenching of the weld after onset of solidification but while the weld remai... | 01/06/1998 |
| 5688335 | Contaminant removal from material Contaminated material is treated with heat and steam to remove halogenated organic compounds from the material. The heating temperature can be lowered by admixing an additive with the contaminated material. A short passage of steam at a flow rate of about... | 11/18/1997 |
| 5679238 | Method for producing sulfuric acid from flue gas desulfurization The present invention is directed towards a method that makes sulfuric acid from a dry flue gas desulfurization process which utilizes a low temperature regeneration of the carbon adsorbent in the flue gas process. The sulfuric acid is generated in an ele... | 10/21/1997 |
| 5674424 | Thermal heating blanket in-situ thermal desorption for remediation of hydrocarbon-contaminated soil An in-situ thermal desorption system which combines thermal desorption and vacuum extraction to separate organic compounds from in place contaminated soils is disclosed. A "heating blanket" desorption unit is applied directly to the surface of the hydroca... | 10/07/1997 |
| 5662749 | Supersolvus processing for tantalum-containing nickel base superalloys A tantalum-containing nickel base superalloy having a γ' phase has greatly improved maximum tensile strength which is substantially independent of the frequency of the stress is processed by forging above the γ' solvus temperature and annealing above th... | 09/02/1997 |
| 5622641 | Method for in-situ reduction of PCB-like contaminants from concrete A method for decontaminating of concrete and more specifically to methods used for in-situ thermal desorption of contaminants from concrete, such as PCBs is disclosed. The methods employed heat the concrete at reduced pressure and at a temperature suffici... | 04/22/1997 |
| 5597967 | Aluminum-silicon alloy foils Two-phase Al--Si alloy foils are made directly from Al--Si alloy powders by hot pressing. These Al--Si alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, n... | 01/28/1997 |
| 5595586 | Method for recovery of volatile organic compounds A method for separating volatile organic compounds (VOCs), such as trichloroethylene, from air by sorption followed by desorption of the VOCs. The VOCs from the contaminated ground water are air stripped and then sorbed on a sorbent, such as a polyester e... | 01/21/1997 |
| 5575927 | Method for destruction of halogenated hydrocarbons Iron and ferrous sulfide in specific amounts are combined under aerobic or anaerobic conditions to reduce halogenated hydrocarbons in aqueous compositions to non-toxic by-products at near neutral pH and Eh values below -325 mV. The combination of iron met... | 11/19/1996 |
| 5575926 | Dechlorination of chlorinated hydrocarbons by soluble iron citrate A method for significantly improving the dechlorination of chlorinated hydrocarbon compounds is disclosed. The method involves admixing preformed ferrous citrate with chlorinated hydrocarbon contaminated aqueous compositions both in situ and ex situ. The ... | 11/19/1996 |
| 5556484 | Method for reducing abnormal grain growth in Ni-base superalloys A method of forging Ni-base superalloys is described which avoids the growth of abnormally large grains in the surface region of a forged article. The method involves forging and/or annealing a Ni-base superalloy in a carburizing environment. Forging and/... | 09/17/1996 |
| 5540838 | Stimulation of microbial para-dechlorination of polychlorinated biphenyls A method for stimulating microbial dechlorination of the unflanked para-chlorine substituent of PCBs having one or two unflanked para-chlorine substituents in an active PCB-contaminated sediment having a population of microorganisms capable of para-dechlo... | 07/30/1996 |
| 5489738 | Enhanced volatilization of polychlorinated biphenyl compounds This invention provides a method or process for separating an organic chlorinated contaminant such as polychlorobiphenyl from an inert porous material which comprises admixing the material with an effective amount of a volatilizable organic liquid in whic... | 02/06/1996 |
| 5484729 | Microbial dechlorination of polychlorinated biphenyl compounds An improved process for anerobic microbial dechlorination of polychlorinated biphenyl compounds in sediment containing microorganisms capable of dechlorinating polychlorinated biphenyls which includes adding and admixing the sediment with a halogen substi... | 01/16/1996 |
| 5432253 | Composite containing fibrous material A composite is produced by forming tapes comprised of a mixture of infiltration-promoting material and organic binding material, disposing a layer of boron nitride coated fibrous material between at least two of the tapes forming a layered structure, lami... | 07/11/1995 |
| 5431874 | High strength oxidation resistant titanium base alloy Titanium alloys containing aluminum, hafnium, tantalum, and silicon are found to have improved tensile strengths as well as ductility and oxidation resistance at temperatures up to and above 750° C. without embrittlement.... | 07/11/1995 |
| 5430232 | Enhanced volatilization of polychlorinated biphenyl compounds Polychlorinated biphenyls and chlorinated hydrocarbons are separated from soil by oil assisted desorption followed by vacuum stripping in presence of a sweep gas.... | 07/04/1995 |
| 5427735 | Superalloy foils by hot isostatic pressing Dense superalloy foils are prepared by hot isostatically pressing a mixture of low melting alloy powders and high melting alloy powders at a temperature at least equal to or greater than three-quarters of the melting point of the low melting point alloy p... | 06/27/1995 |
| 5426001 | Clad structural member with NbTiAl low Hf alloy cladding and niobium base metal core Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based cladding alloy are provided. The cladding is preferably an alloy having a niobium and titanium base accord... | 06/20/1995 |
| 5415848 | Method for removal of hexavalent chromium from a solution A process for removing chromium from an aqueous electrolyte solution is disclosed. The process involves admixing with the solution an amount of a chromium-reducing compound and an amount of a precipitant for the anion of the chromium-reducing compound. Th... | 05/16/1995 |
| 5413682 | Recovery of fluoride from waste solutions Fluoride is recovered from an aqueous ammonium fluoride and ammonium hydroxide solution by electrolyzing the solution in an electrochemical cell having an ion-exchange membrane between a catholyte chamber and an anolyte chamber whereby hydrofluoric acid i... | 05/09/1995 |
| 5407734 | Fiber-containing composite A composite is produced by depositing an organic slurry of ceramic matrix-forming material on a layer of fibrous material forming a tape therewith on drying, forming a layered structure of the tapes, laminating the structure, firing the laminated structur... | 04/18/1995 |
| 5405708 | Clad structural member with NbTiHf alloy cladding and niobium base metal core Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based cladding alloy are provided. The cladding is preferably an alloy having a niobium and titanium base accord... | 04/11/1995 |
| 5401717 | Elongate bismuth system superconductor having aligned 2212 phase This invention is related to the preparation of an elongate conductor having a silver sheath, and a core of an aligned polycrystalline oxide superconductor having the approximate formula Bi2-x Pbx Sr2-a La+b Ca | 03/28/1995 |
| 5393483 | High-temperature fatigue-resistant nickel based superalloy and thermomechanical process A nickel based superalloy composition is disclosed that provides increased high temperature stress-rupture strength and improved resistance to fatigue crack propagation at elevated temperatures up to about 760° C. The composition is comprised of, by weig... | 02/28/1995 |
| 5391270 | Detection and measurement of heavy metals Disclosed herein is an improved method for measuring the presence and amount of a variety of metals contained in a sample. In the first step, all of the various forms of each metal are converted to a soluble metallic complex which is capable of being elec... | 02/21/1995 |
| 5391300 | Method for the removal of halogenated organic compounds from an environment Polychlorinated biphenyl compounds are sorbed from aqueous solutions and mixtures by a variety of organic polymeric materials. The contaminant can be desorbed for further processing and destruction.... | 02/21/1995 |
| 5391305 | Dehalogenation of halogenated hydrocarbons in aqueous compositions A process for dehalogenating hydrocarbon compounds that contaminate aqueous compositions is disclosed. The process admixes the contaminated aqueous composition with ferrous oxide. The use of citric acid in the reaction is optional. The reaction can be per... | 02/21/1995 |
| 5387299 | Ceramic composite containing coated fibrous material A composite is produced by depositing a slurry of infiltration-promoting material and organic binding material on a layer of boron nitride coated fibrous material forming a tape therewith on drying, firing the tape to burn out organic binding material and... | 02/07/1995 |
| 5384307 | Oxide superconductor tape having silver alloy sheath with increased hardness A method of forming the superconducting body comprises forming a body comprised of a precursor deposit of an oxide superconductor on a substrate formed from a silver alloy comprised of a solute metal from the group consisting of yttrium, aluminum, lithium... | 01/24/1995 |
| 5382736 | Method for catalytic dechlorination of polychlorinated biphenyls An improved method for the dechlorination of polychlorinated biphenyls that are dissolved in an organic solvent, which comprises the incremental additions of a hydrogen transfer agent, such as potassium formate, in the presence of a catalytic amount of a ... | 01/17/1995 |
| 5380441 | Removal of chromium from solution using mechanically agitated iron particles Metallic iron particles are added to an aqueous solution containing hexavalent chromium and mechanically agitated. Enough of the surface of the iron particles remains precipitate-free to reduce substantially all the hexavalent chromium to trivalent chromi... | 01/10/1995 |
| 5376427 | Ceramic composite containing coated fibrous material A composite is produced by depositing a slurry of infiltration-promoting material and organic binding material on a layer of boron nitride coated fibrous material forming a tape therewith on drying, firing the tape to burn out organic binding material and... | 12/27/1994 |
