Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 4832757 | Method for producing normalized grade D sucker rods An article of manufacture is provided in the form of a sucker rod for use in sucker rod pumps. The sucker rod is formed of a medium carbon manganese-molybdenum steel consisting essentially of about 0.25% to 0.45% carbon, about 1.2% to 1.8% manganese, abou... | 05/23/1989 |
| 4810303 | Production of hexagonal cadmium sulfide pigment Hexagonal cadmium sulfide, a bright yellow pigment useful in high temperature processing, is produced by reacting cadmium sulfate solution with a solution of a soluble sulfide under pressure and at a temperature of about 250° C.... | 03/07/1989 |
| 4806385 | Method of producing oxidation resistant coatings for molybdenum A molybdenum article is disclosed in which the substrate thereof has adherently bonded thereto a thermally self-healing plasma-sprayed coating consisting essentially of a composite of molybdenum and a refractory oxide material capable of reacting with mol... | 02/21/1989 |
| 4797510 | Device for joining superconducting wire A method and product for coupling the ends of a pair of superconducting cored wires are provided, the core of the wires consisting essentially of a substantially unitary structure of a sintered powered superconducting compound material confined within a t... | 01/10/1989 |
| 4775106 | Use of smelter-grade sulfuric acid as true heavy-liquid media in coal cleaning A method is provided for removing contaminating minerals from coal by true heavy-liquid media. The coal is comminuted to liberate a substantial portion of the minerals from the coal, the method comprising forming a slurry of the comminuted coal in a solut... | 10/04/1988 |
| 4762700 | Ammonium octamolybdate-alpha Ammonium octamolybdate-alpha is formed by reacting powdered molybdenum trioxide with a solution of ammonium dimolybdate in water at the boiling temperature until thickening of the slurry occurs, after which the slurry is digested, filtered hot and the sep... | 08/09/1988 |
| 4762699 | Synthesis of molybdenum hexacarbonyl Molybdenum hexacarbonyl is prepared by carbonylating diammonium oxopentachloromolybdate (V) (NH4)2 (MoOCl5) at pressures up to about 2000 psig and temperatures up to about 150° C. in a solvent such as tetrahydrofuran, usi... | 08/09/1988 |
| 4761177 | Production of cobalt and nickel powder Fine cobalt or nickel powder is produced by hydrogen reduction of a sulfate solution in the presence of a base and a strong reductant such as a metal borohydride wherein the base is added stagewise to the solution with the initial addition of base being s... | 08/02/1988 |
| 4758406 | Molybdenum addition agent and process for its production Molybdenite is roasted under controlled conditions to provide a polymolybdenum oxide composition having an oxygen content in excess of the stoichiometric oxygen content for MoO2 and less than that for MoO3, such that the composition ... | 07/19/1988 |
| 4758271 | Continuous copper drossing of lead A process for the continuous copper drossing of molten lead bullion is provided, the process comprising, establishing a column of molten lead having a hot top portion at a temperature of about 800° C. to 1150° C. and a bottom portion of substantially lo... | 07/19/1988 |
| 4758266 | Production of high surface area nickel powder Nickel powder of high surface area is produced by pressurized hydrogen reduction of an ammoniacal aqueous nickel sulfate solution using a small amount of a catalytic reductant compound exemplified by formaldehyde sulfoxalate (rongalite).... | 07/19/1988 |
| 4753690 | Method for producing composite material having an aluminum alloy matrix with a silicon carbide reinforcement Reinforced composite aluminum-matrix articles containing up to 20%, by volume, silicon carbide fibers or particles, are produced by a casting process wherein about 4% to about 7%, by weight, of magnesium is included in the aluminum matrix alloy to facilit... | 06/28/1988 |
| 4745033 | Oxidation resistant coatings for molybdenum A molybdenum article is disclosed in which the substrate thereof has adherently bonded thereto a thermally self-healing plasma-sprayed coating consisting essentially of a composite of molybdenum and a refractory oxide material capable of reacting with mol... | 05/17/1988 |
| 4732888 | Durable zinc ferrite sorbent pellets for hot coal gas desulfurization Durable, porous sulfur sorbents useful in removing hydrogen sulfide from hot coal gas are prepared by water pelletizing a mixture of fine zinc oxide and fine iron oxide with inorganic and organic binders and small amounts of activators such as sodium carb... | 03/22/1988 |
| 4731114 | Recovery of precious metals from refractory low-grade ores Low-grade refractory gold ores, which may also contain silver and other metal values are treated by partial roasting of concentrate to remove controlled amounts of sulfur and carbon, then oxygen pressure leached to oxidize further amounts of sulfur and ca... | 03/15/1988 |
| 4713111 | Production of aluminum-SiC composite using sodium tetrasborate as an addition agent Reinforced composite aluminum-matrix articles containing silicon carbide fibers or particles, are produced by a casting process wherein the silicon carbide fibers or particles are mixed with dehydrated sodium tetraborate and mixed with molten aluminum or ... | 12/15/1987 |
| 4713086 | Oil-compatible coal/water mixtures A method is provided for inhibiting an increase in viscosity of coal/water slurries when such slurries are caused to contact petroleum oil during fuel changeover in power generation systems, the method comprising maintaining in the coal/water slurry durin... | 12/15/1987 |
| 4698163 | Treatment of phosphate-containing wastewater A method is provided for treating contaminated wastewater of pH ranging from about 1.5 to 3 containing phosphate ions and fluoride ions. The method comprises treating the said wastewater with an amount of alkaline agent selected from the group consisting ... | 10/06/1987 |
| 4689156 | Removal of ammonia from wastewater A method is provided for removing ammonia from wastewater containing in excess of about 15 ppm NH3 (N)-T. The method comprises treating the wastewater with an alkaline reagent selected from the group consisting of lime and caustic sufficient to... | 08/25/1987 |
| 4670229 | Cyclic process for recovering metal values and alumina from spent catalysts Metal values and alumina are recovered from spent, usually oily, catalysts by oxygen pressure leaching with sodium hydroxide and/or sodium aluminate to dissolve molybdenum, vanadium and/or tungsten and provide a solid, filterable residue containing alumin... | 06/02/1987 |
| 4666474 | Electrostatic precipitators An electrostatic precipitator is provided comprising a plurality of spaced apart vertically extending collector plates with an array of vertically extending ionizer wire rods disposed in a space between each of the collector plates. The improvement reside... | 05/19/1987 |
| 4666685 | Selective extraction of molybdenum and vanadium from spent catalysts by oxidative leaching with sodium aluminate and caustic Spent hydrodesulfurization catalysts containing alumina, at least one metal from the group consisting of molybdenum, tungsten and vanadium and at least one metal from the group consisting of nickel and cobalt, sulfur, and, usually, residual oil are oxygen... | 05/19/1987 |
| 4662429 | Composite material having matrix of aluminum or aluminum alloy with dispersed fibrous or particulate reinforcement Reinforced composite aluminum-matrix articles containing a non-oxide reinforcing material, such as silicon carbide fibers or particles, are produced by a casting process wherein a small amount of lithium less than about 1%, by weight, is included in a mel... | 05/05/1987 |
| 4659376 | Fluid bed reduction to produce molybdenum metal Molybdenum trioxide in granular or powder form is reduced to molybdenum metal by stagewise fluid bed reduction wherein molybdenum trioxide is reduced to molybdenum dioxide using ammonia as the fluidizing-reducing gas at 400° C. to 650° C. and molybdenum... | 04/21/1987 |
| 4657735 | Mo-Hf-C alloy composition A molybdenum-hafnium-carbon alloy is provided consisting essentially by weight of about 0.6% to about 1% Hf, about 0.045% to about 0.08% C, and the balance essentially molybdenum, the alloy being characterized such that during casting of an ingot and hot ... | 04/14/1987 |
| 4657680 | Wastewater treatment A method is provided for the treatment of wastewater of pH ranging from about 1.5 to 3 containing at least about 100 ppm phosphorus as phosphate ions, at least about 50 ppm fluorine as fluoride ions and ammonia in excess of about 15 ppm NH3 (N)... | 04/14/1987 |
| 4657601 | Thermomechanical processing of beryllium-copper alloys The invention contemplates a thermomechanical process applicable to beryllium copper alloys consisting essentially of about 0.2 wt % to about 0.7 wt % beryllium; from about 1.0 wt % to about 3.5 wt % nickel and cobalt in the aggregate, where nickel compri... | 04/14/1987 |
| 4657065 | Composite materials having a matrix of magnesium or magnesium alloy reinforced with discontinuous silicon carbide particles Reinforced composite magnesium-matrix articles, containing silicon carbide fibers or particles, are produced by a casting process wherein a small amount of lithium, less than about 0.7% by weight, is included in a melt of magnesium matrix alloy to facilit... | 04/14/1987 |
| 4627900 | Electrochemical dissolution and control of nickel sulfide scale A method for electrochemically minimizing sulfide scale buildup on a metal surface by connecting the surface as an anode and periodically reversing the current flow at predetermined intervals.... | 12/09/1986 |
| 4614543 | Mixed lixiviant for separate recovery of zinc and lead from iron-containing waste materials A process is disclosed for the hydrometallurgical treatment of finely divided iron-containing steel plant dusts containing zinc, lead and such other metal values as calcium, manganese, silicon, magnesium, aluminum, cadmium, copper, and the like. The proce... | 09/30/1986 |
| 4610721 | Two-stage leaching process for steel plant dusts A process is provided for selectively recovering zinc from steel plant dust containing substantial amounts of iron. The process comprises atmospherically leaching the steel plant dust in a first stage wherein an amount of steel plant dust is mixed with an... | 09/09/1986 |
| 4610722 | Process for metal recovery from steel plant dust A process is provided for hydrometallurgical processing of steel plant dusts containing cadmium, lead, zinc, and iron values, along with impurities such as chloride and fluoride salts of sodium, potassium, magnesium, etc. The first step in the process inv... | 09/09/1986 |
| 4606817 | Recovery of molybdenite Directed to a flotation process for recovering molybdenite from a ground ore pulp containing the same which includes a rougher flotation step in which no collector is used by relatively high recovery of molybdenite in a rougher concentrate uncontaminated ... | 08/19/1986 |
| 4605435 | Recycling of steel plant dusts to steel furnaces A method is provided for converting iron-containing steel plant dust to recyclable agglomerates. The method comprises mixing the dust with sufficient water and about 1 percent by weight Portland cement to permit pelletization. The pellets are dried at tem... | 08/12/1986 |
| 4599955 | Coal slagging burner for producing clean low-sulfur fuel gas Sulfur-containing coal is combusted in a cyclone furnace under strongly reducing conditions with a sulfur fixing agent such as lime to produce a basic slag containing the ash and sulfur content of the coal and a product gas of high combustible content whi... | 07/15/1986 |
| 4600435 | Solvent extraction of cobalt (II) from sulfate solutions with cobalt extractants Nickel and cobalt contained in aqueous sulfate solution are separately recovered by counter-current solvent extraction using a cobalt-selective organic extractant while scaling of equipment and cobalt recycle are minimized by controlling aqueous pH at the... | 07/15/1986 |
| 4598652 | Coal combustion to produce clean low-sulfur exhaust gas A process is provided for combusting sulfur-containing coal in a combustion stage to which is provided at least 60% of the oxygen stoichiometrically required for substantially complete combustion of the coal and combustion is conducted under highly turbul... | 07/08/1986 |
| 4582512 | Chemical leaching of coal to remove ash, alkali and vanadium Powdered coal is upgraded in utility and heat value by removal of ash and pyrite constituents by successively pressure caustic leaching the coal slurry at a temperature of at least about 175° C., hydrochloric acid leaching the caustic leached coal to dis... | 04/15/1986 |
| 4582727 | Varnish-bonded, carbon-coated metal products Metal substrates with a protective coating are provided, the coating being formed of a varnish-bonded, carbon-containing layer adherently bonded to the metal substrate. Optionally, the coating may also contain a dispersion of finely divided material selec... | 04/15/1986 |
| 4581079 | Bearing steel A bearing steel containing about 0.8% to about 1.2% carbon, about 0.5% to about 1.33% manganese, about 0.25% to about 0.7% silicon, about 0.14% to about 0.5% molybdenum, up to about 0.75% chromium and the balance essentially iron has improved hardenabilit... | 04/08/1986 |
