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| Number | Title | Issue Date |
| 7981191 | Method for the production of tantalum powder using reclaimed scrap as source material A process for obtaining tantalum powder from tantalum containing scrap material is provided. The process includes selecting source material, such as from sintered anodes for capacitors, hydriding the source material, milling to desired particle size and surface area... | 07/19/2011 |
| 7309374 | Diffusion bonded nickel-copper powder metallurgy powder In contrast to current industrial practice where alloying powders are added to starting powder metallurgy compositions either as powder mixtures or fully prealloyed powders, the present invention posits a diffusion bonded nickel-copper precursor additive mixture for... | 12/18/2007 |
| 7294363 | Methods of forming decorative veils Methods that apply decorative particles in-line in the manufacturing process to form a decorative structured mat or veil that is ready for direct commercial application. The decorative particles or decorative paint patterns should be of a size and/or color to be vis... | 11/13/2007 |
| 7175688 | Ni-Fe based alloy powder A Ni—Fe based alloy powder of the present invention contains not less than 90% by a combined mass of Ni and Fe and homogeneously has particles having an average particle diameter from 0.1 to 1 μm, and an average value of mass ratio Fe/(Fe+Ni) from 15% to 25% both... | 02/13/2007 |
| 7156893 | Method of making niobium and other metal powders Methods of forming niobium powders and other metal powders are described. The method involves milling the metal powders at elevated temperatures and in the presence of at least one liquid solvent. The methods of the present invention have the ability to reduce DC le... | 01/02/2007 |
| 6401562 | Method for producing gear wheels from blanks obtained by sintering metal powders A method for producing gear wheels from blanks obtained by sintering metal powders, comprising the step of coining longitudinal and transverse profiles of the teeth of a sintered blank with a rolling operation by one or more rollers shaped complementarily... | 06/11/2002 |
| 6068691 | Process for making machine readable images Finely divided embossed metal particles are prepared by forming an embossment on a carrier surface in which the embossment comprises a machine readable image produced by a diffraction grating pattern, a holographic image pattern or an image visible solely... | 05/30/2000 |
| 6012658 | Method of producing metal flakes, particularly silver flakes of high purity A method of producing metal flakes by producing a highly porous sponge structure of the metal; comminuting the highly porous sponge structure into particles; and flattening the particles into flakes having a low porosity. The method is particularly useful... | 01/11/2000 |
| 5922102 | Procedure for manufacturing zinc particles A procedure for making zinc particles of a size, shape and composition such that the particles can be subsequently used in a process for manufacturing zinc parts from such particles in either molten or powder form includes the initial step of heating zinc... | 07/13/1999 |
| 5772701 | Method of making tantalum capacitors A method for manufacturing tantalum capacitors includes preparing a tantalum compact by cold pressing tantalum powder, placing the compact, along with loose refractory metal powder, in a microwave-transparent casket to form an assembly, and heating the as... | 06/30/1998 |
| 5624076 | Process for making embossed metallic leafing pigments Embossed, finely-divided, thin, bright-metal particles are prepared by forming an embossed release surface on at least one side of a carrier sheet in which the embossed pattern comprises a diffraction grating having from about 5,000 to 11,000 grooves per ... | 04/29/1997 |
| 5350437 | Method of manufacturing an alloy powder with hard particles dispersed therein This invention provides a minute alloy powder with hard particles uniformly dispersed therein. The alloy powder may be used as a grinder material for finishing a specular surface or surfaces of other precision instruments or as a material for cladding and... | 09/27/1994 |
| 5330701 | Process for making finely divided intermetallic A method is disclosed for controlling a self-propagating reaction in a particulate medium. The method comprises controlling the boundary heat flux of the reaction to produce reaction waves which travel through the particulate medium undergoing a self-prop... | 07/19/1994 |
| 5096509 | Anisotropic magnetic powder and magnet thereof and method of producing same A the magnetically anisotropic magnetic powder having an average particle size of 1-1000 μm and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 μm, wherein R represents one or more rar... | 03/17/1992 |
| 5085715 | Magnetically anisotropic bond magnet, magnetic powder for the magnet and manufacturing method of the powder A process for producing magnetically anisotropic powder having "flattened" crystal grains of an R-TM-B-M system alloy with preferably (c)/(a) greater than 2, where (c) is the grain size perpendicular to the C-axis and (a) the grain size parallel to the C-... | 02/04/1992 |
| 4954166 | Production of sponge metal from sponge metal fines The pyrophoric fines inevitably resulting from the crushing of zirconium and/or hafnium or other exotic metal fines, such as titanium and uranium, are brought into contact with molten magnesium or a molten mixture of magnesium and magnesium chloride in th... | 09/04/1990 |
| 4915729 | Method of manufacturing metal powders A molten metal is placed in contact with a bed of moving beads. The molten metal breaks up into fine particles which are rapidly cooled in contact with the beads and consequently acquire a structure which is typical for such rapid cooling.... | 04/10/1990 |
| 4891059 | Phase redistribution processing Homogeneous and refined microstructure powders and the method of making them from, for example, liquid metal immiscible systems or very limited solid solubility systems. At least two metals are melted and then rapidly solidified to yield a solid with a se... | 01/02/1990 |
| 4767454 | Process for the preparation of finely particulate chromium metal powder having a low oxygen content For preparing a chromium metal powder lacking in oxygen and having an average particle size not greater than 20 μm, a mixture of chromium oxide and calcium oxide, in a molar ratio of 1:0.5 to 1:2, is calcined initially at temperatures of 650° to 1,200°... | 08/30/1988 |
| 4715893 | Aluminum-iron-vanadium alloys having high strength at elevated temperatures The invention provides an aluminum based alloy consisting essentially of the formula Albal Fea Vb Xc, wherein X is at least one element selected from the group consisting of Zn, Co, Ni, Cr, Mo, Zr, Ti, Hf, Y and... | 12/29/1987 |
| 4687511 | Metal matrix composite powders and process for producing same A composite powdered material is disclosed consisting essentially of particles having a metal matrix and one or more relatively uniform discrete dispersed reinforcement phases in the matrix, the reinforcement phases being of high strength or high hardness... | 08/18/1987 |
| 4655825 | Metal powder and sponge and processes for the production thereof Passified Zinc Soluble Metal-Based Metal particles having a controlled particle size distribution suitable for metallurgy usage without additional particle size reduction and process for making the same. Such metal particles are substantially free of hali... | 04/07/1987 |
| 4650130 | Rapidly solidified powder production system A system is described for the production of rapidly solidified powder. The system contains elements for casting rapidly solidified ribbon, an in-line knife mill or a hammer mill for fracturing the rapidly solidified ribbon into shard, and either an in-lin... | 03/17/1987 |
| 4594220 | Method of manufacturing a scandate dispenser cathode and dispenser cathode manufactured by means of the method A method of manufacturing a scandate dispenser cathode having a matrix at least the top layer of which at the surface consists substantially of tungsten (W) and scandium oxide (Sc2 O3) and with emitter material in or below said matri... | 06/10/1986 |
| 4513020 | Platelet metal powder for coating a substrate The present invention is for a flat platelet powder for deposition onto a substrate. The powder is formed by fracture of brittle sheet or ribbon. The resulting powder has a faceted outline formed by fracture. The powder of the present invention produces a... | 04/23/1985 |
| 4479823 | Process for the production of silver-tin master alloys for dental amalgams A silver-tin-copper master alloy powder useful as a dental filling when amalgamated with mercury and having improved properties for that utility can be obtained by the steps of: (a) pulverizing an alloy containing silver, tin and copper into a first spher... | 10/30/1984 |
| 4406700 | Powder produced by embrittling of metallic glassy alloy by hydrogen charging Metallic glass powder is prepared by charging a solid metallic glass body with hydrogen to effect embrittlement, followed by comminution of the embrittled metallic glass body.... | 09/27/1983 |
| 4405368 | Iron-aluminum alloys containing boron which have been processed by rapid solidification process and method New iron base alloys containing aluminum and boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique which produces cooling rates between ~105 to 107 ° C./sec. The as-quenched ribbon or pow... | 09/20/1983 |
| 4404028 | Nickel base alloys which contain boron and have been processed by rapid solidification process New nickel rich metal alloys containing copper along with specific amounts of boron are disclosed. The alloys are subjected to rapid solidification processing (RSP) techniques which produce cooling rates between ~105 ° to 107 ° C./... | 09/13/1983 |
| 4402905 | Production of a polycrystalline silicon aluminum alloy by a hot pressing technique The present invention is directed to a process for preparing a body of polycrystalline silicon doped with aluminum comprising melting a mixture of silicon powder and aluminum powder, rapidly quenching the melt, grinding the solidified silicon-aluminum all... | 09/06/1983 |
| 4402745 | New iron-aluminum-copper alloys which contain boron and have been processed by rapid solidification process and method New iron rich metal alloys containing aluminum and copper along with specific amounts of boron are disclosed. The alloys are subjected to rapid solidification processing (RSP) technique which produces cooling rates between ~105 to 107 | 09/06/1983 |
| 4381943 | Chemically homogeneous microcrystalline metal powder for coating substrates The present invention is a chemically homogeneous microcrystalline powder for deposition onto a substrate. The powder is a B containing alloy based in Fe, Ni, Co or a combination thereof.... | 05/03/1983 |
| 4359352 | Nickel base superalloys which contain boron and have been processed by a rapid solidification process Nickel and iron-nickel base alloys are described together with a rapid solidification process used in the preparation thereof to provide materials useful in the fabrication of parts subject to high temperature operating conditions. The alloys include comm... | 11/16/1982 |
| 4321087 | Process for making metallic leafing pigments A continuous process for preparing finely divided thin, bright metal particles which comprises applying a release coating to at least one side of a carrier sheet, depositing a metal film of from 350 to 450 angstroms thickness onto the release coating solu... | 03/23/1982 |
| 4318733 | Tool steels which contain boron and have been processed using a rapid solidification process and method Alloys having compositions similar to commercial tool steels, but modified by the addition of 0.1 to 1.5 wt. % boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique, producing cooling rates between 105 | 03/09/1982 |
| 4259270 | Apparatus and method for the manufacture of splat foils from metallic melts An apparatus is disclosed for manufacturing splat foils by disintegration and rapid solidification of metallic melts. The apparatus has a self-consuming electrode disposed above a rotatable counter electrode. Attached to the counter-electrode is a conical... | 03/31/1981 |
| 4231790 | Process for the preparation of tantalum and niobium powders of improved efficiency An anhydrous mixture of extrudable viscosity of an activated alkali metal tantalum or niobium halide powder, an alkali metal halide powder, and a molten alkali metal in about 1:0.75-2.0:4.75-5.5 molar ratio is formed into a paste which is extruded and for... | 11/04/1980 |
| 4159232 | Electro-hydrometallurgical process for the extraction of base metals and iron A HYDROMETALLURGICAL PROCESS FOR THE ELECTROLYTIC RECOVERY OF SELECTED BASE METALS (ESPECIALLY COPPER OR POSSIBLY NICKEL) FROM SULPHIDE ORE CONCENTRATES CONCURRENTLY WITH THE EXTRACTION OF METALLIC IRON IN A COMMERCIALLY USABLE FORM. The process involves ... | 06/26/1979 |
| 4069045 | Metal powder suited for powder metallurgical purposes, and a process for manufacturing the metal powder A steel powder suited for powder metallurgical purposes consists of an amorphous to compact-grained, essentially dendrite-free material with irregularly cornered particle shape. Such a steel powder may be produced by causing molten steel to form at least ... | 01/17/1978 |
| 4063942 | Metal flake product suited for the production of metal powder for powder metallurgical purposes, and a process for manufacturing the product A steel flake product, suitable for being crushed or ground to form a steel powder for powder metallurgical purposes, consists of a plurality of relatively thin, brittle and easily crushed, substantially dendrite-free steel flakes of amorphous to compact-... | 12/20/1977 |
