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| Number | Title | Issue Date |
| 7993577 | Cost-effective titanium alloy powder compositions and method for manufacturing flat or shaped articles from these powders The invention relates to manufacture of titanium articles from sintered powders. The cost-effective initial powder: 10-50 wt % of titanium powder having ≦500 microns in particle size manufactured from underseparated titanium sponge comprising ≦2 wt % of chlorine... | 08/09/2011 |
| 7883662 | Metal injection molding methods and feedstocks Metal injection molding methods and feedstocks. Metal injection molding methods include forming a feedstock, molding the feedstock into a molded article, substantially removing a lubricant, a thermoplastic, and an aromatic binder from the molded article, and sinteri... | 02/08/2011 |
| 7632454 | Dense, shaped articles constructed of a refractory material and methods of preparing such articles The invention provides a method of forming a dense, shaped article, such as a crucible, formed of a refractory material, the method comprising the steps of placing a refractory material having a melting point of at least about 2900° C. in a mold configured to form ... | 12/15/2009 |
| 7585459 | Method of preparing iron-based components The present invention concerns a process for the preparation of high density green compacts comprising the steps of providing an iron-based powder essentially free from fine particles; optionally mixing said powder with graphite and other additives; uniaxially compa... | 09/08/2009 |
| 7431808 | Sputter target based on titanium dioxide An electrically conductive titanium dioxide sputter target with an electrical resistivity of less than 5 Ω-cm, which contains as an additive at least one doping agent or a mixture of doping agents in an amount of less than 5 mole %. The doping agent or agents are s... | 10/07/2008 |
| 7422631 | Mould parts of silicon nitride and method for producing such mould parts The present invention relates to silicon nitride mould parts, particularly crucibles for use in connection with directional solidification and pulling of silicon single crystals. The mould parts consist of Si3N4 having a total open porosity bet... | 09/09/2008 |
| 7393498 | Sintered metal parts and method for the manufacturing thereof A powder metal tooth part and a method of producing a toothed sintered metal part by uniaxially compacting an iron or iron-based powder having coarse particles in a single compaction step, subjecting the part to sintering, and subjecting the part to a surface densif... | 07/01/2008 |
| 7384445 | Sintered metal parts and method for the manufacturing thereof The invention concerns a sintered metal part which has a densified surface and sintered density of at least 7.35 g/cm3 and a core structure distinguished by a pore structure obtained by single pressing to at least 7.35 g/cm3 and single sinterin... | 06/10/2008 |
| RE40348 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a an R-T-B based, rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe T, wherein R is at least one rare earth element including Y, and... | 06/03/2008 |
| 7341689 | Pre-alloyed iron based powder The invention concerns a new pre alloyed steel powder comprising in addition to iron and inevitable impurities, by wt %, 1.3-1.7% by weight of Cr, 0.15-0.3% by weight of Mo, 0.09-0.3% by weight of Mn, not larger than 0.01 by weight of C, not larger than 0.25% of O. | 03/11/2008 |
| 7309465 | Sintered sprocket for silent chain and production method therefor A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevi... | 12/18/2007 |
| 7217390 | Method of fabricating ultra-fine cermet alloys with homogeneous solid grain structure The present invention relates to a method of fabricating ultra-fine grain cermet alloys with a homogenous solid solution grain structure. More particularly, the invention relates to a method of fabricating an ultra-fine TiC-base cermet alloy with a homogenous solid ... | 05/15/2007 |
| 7172725 | W-Cu alloy having homogeneous micro-structure and the manufacturing method thereof In W—Cu alloy having a homogeneous micro-structure and a fabrication method thereof, the method includes forming mixed powders by mixing tungsten powders with W—Cu composite powders; forming a compact by pressurizing-forming the mixed powders; forming a skeleton... | 02/06/2007 |
| 7169351 | Method of production of surface densified powder metal components A method for densification of the surface layer of an optionally sintered powder metal component comprising the steps of decarburizing the surface layer for softening the surface layer of the component, and densifying the surface layer of the component. ... | 01/30/2007 |
| 7166171 | Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk or coin for use in coreless motors, and a block for use in linear moto... | 01/23/2007 |
| 7153339 | Powder metallurgical compositions and methods for making the same Metallurgical powder compositions of the present invention include an iron based powder combined with a master alloy powder, as a mechanical property enhancing powder. The addition of master alloy powders has been found to enhance the mechanical properties of the fi... | 12/26/2006 |
| 7135141 | Method of manufacturing a sintered body A method of manufacturing a sintered body, in which a material powder composed of metallic powder or alloy powder, a getter material having a higher oxidation potential than that of the material powder, and a hydride, which constitutes a hydrogen source, are sealed ... | 11/14/2006 |
| 7045092 | Method for press molding rare earth alloy powder and method for producing sintered object of rare earth alloy A perpendicular pressing/compacting method for a rare-earth alloy powder is provided to produce a sintered magnet with excellent magnetic properties. A method for pressing a rare-earth alloy powder by using a die is provided. The die is made of a non-magnetic materi... | 05/16/2006 |
| 7037355 | Niobium powder for capacitor, sintered body using the powder and capacitor using the same An object of the present invention is to provide a niobium sintered body free of reduction in the CV value, a niobium powder for use in the manufacture of the niobium sintered body, and a capacitor using the niobium sintered body. A niobium powder of the present inv... | 05/02/2006 |
| 6719947 | Composite porous media A composite porous media for either gas or liquid flow is strong and efficient, and can readily be formed in or into a wide range of different shapes and configurations. In particular, the porous media is a composite of a metal, aerogel or ceramic foam (i.e., a reti... | 04/13/2004 |
| 6639787 | Modified oxygen reduced valve metal oxides Pressed material such as anodes are described and formed from oxygen reduced oxide powders using additives, such as binders and/or lubricants. Methods to form the pressed material are also described, such as with the use of atomizing, spray drying, fluid ... | 10/28/2003 |
| 6610245 | Friction member manufacturing method A method of manufacturing a friction member by mixing powders of copper/tin-contained metal, ceramic and graphite, and performing high pressure molding and sintering. This manufacturing method produces a high-performance friction member of copper/tin-cont... | 08/26/2003 |
| 6472459 | Fabrication of metallic microstructures by micromolding nanoparticles A method is provided for fabricating metallic microstructures, i.e., microcomponents of micron or submicron dimensions. A molding composition is prepared containing an optional binder and nanometer size (1 to 1000 nm in diameter) metallic particles. A mol... | 10/29/2002 |
| 6338907 | Abrasive tool The invention relates to an abrasive tool comprising a support body and at least one abrasive element connected thereto. Said abrasive element has an abrasive grain which is joined by a sintered metal. The sintered metal used for joining is copper-coated ... | 01/15/2002 |
| 6338747 | Method for producing powder metal materials A method for producing a material includes providing a metallurgical powder including iron, 1.0 to 3.5 weight percent copper, and 0.3 to 0.8 weight percent carbon. At least a portion of the powder is compressed at 20 tsi to 70 tsi to provide a compact, an... | 01/15/2002 |
| 6332906 | Aluminum-silicon alloy formed from a metal powder Aluminum-silicon alloys having high stiffness are used in forming computer memory disks and actuator arms. Disks formed with the alloy have low flutter and can be spun at 12,000 RPM or greater with a flutter of 10 Å or less.... | 12/25/2001 |
| 6325964 | Method of manufacturing high-density titanium alloy article A method of manufacturing a high-density titanium alloy article is disclosed. The method comprises a mixing and granulating step, a high-pressure molding step, and a high-temperature sintering step. Moreover, by means of selecting proper size of titanium ... | 12/04/2001 |
| 6312494 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe, wherein R is at least one rare earth element including Y, and T is Fe or Fe and Co, ... | 11/06/2001 |
| 6277326 | Process for liquid-phase sintering of a multiple-component material The use of liquid phase sintering for manufacturing a high density multiple component material is disclosed herein. The preferred weighting material is a multiple component material that includes a high-density component, a binding component and an anti-o... | 08/21/2001 |
| 6126894 | Method of producing high density sintered articles from iron-silicon alloys A method of producing Iron-Silicon high density sintered articles of intricate design comprising: (a) the blending of compressible iron or low-carbon steel powder, silicon alloyed iron or silicon powder, or combination of silicon alloyed iron and silicon ... | 10/03/2000 |
| 6123895 | Aluminum base member for semiconductor device containing a nitrogen rich surface and method for producing the same A member for semiconductor devices comprising a composite alloy of aluminum or an aluminum alloy and silicon carbide, wherein silicon carbide grains are dispersed in aluminum or the aluminum alloy in an amount of from 10 to 70% by weight, the amount of ni... | 09/26/2000 |
| 6089843 | Sliding member and oil pump An outer rotor and an inner rotor are formed of sintered aluminum alloy. The sintered aluminum alloy contains 0.5 wt % to 11 wt % of aluminum nitride. Porosity of the sintered aluminum alloy for outer rotor is 3 vol % to 15 vol %. Porosity of the sintered... | 07/18/2000 |
| 6063314 | Method for accurate replication of shaped articles using sinterable powders Shaped article replicas which are proportionately accurate replicas of a shaped article and which are equal, greater or smaller in size than said shaped article are made by preparing a swellable polymer replica of said shaped article; immersing said swell... | 05/16/2000 |
| 6045631 | Method for making a light metal-rare earth metal alloy A method of making a light metal-rare earth metal alloy includes mixing a light metal powder, such as aluminum powder, with a finely divided rare earth metal-containing compound, such as scandium oxide, creating a billet by subjecting the mixture to cold ... | 04/04/2000 |
| 6042780 | Method for manufacturing high performance components A method for producing high performance components by the consolidation of powdered materials under conditions of hot isostatic pressure. The method uses the inclusion of reactive materials mixed into pressure-transmitting mold materials and into the powd... | 03/28/2000 |
| 6033788 | Process for joining powder metallurgy objects in the green (or brown) state In a process for producing powder metallurgy objects containing two or more individually formed pieces, the individual formed pieces or powder compacts which are comprised of powder and a binder are joined together. A polymer compatible with the binder is... | 03/07/2000 |
| 5989492 | Process including heating and cooling for production of an injection-moulded body A process for production of a moulded ceramic and/or metallic body from a ductile material comprising one or more ceramic and/or metallic components, which material is fed into the pre-heated mould cavity (1) of a moulding tool. The moulded tool includes ... | 11/23/1999 |
| 5930583 | Method for forming titanium alloys by powder metallurgy This invention relates to a method for forming a titanium alloy by powder metallurgy, which comprises the processes of mixing uniformly a powder of titanium or an alloy thereof with a low-melting point metal or alloy powder, injecting the mixture into a p... | 07/27/1999 |
| 5930580 | Method for forming porous metals A porous material of desired porosity and pore size is made by mixing a piculate material and fungible beads that are thermally decomposable until the desired distribution is attained; compacting the mixed material and beads to form a green body that has... | 07/27/1999 |
| 5881354 | Sintered hi-density process with forming A method of making a sintered article of powder metal having a carbon composition in the range of about 0.8% to 2.0% by weight, then spheroidizing the sintered article and then warm forming the sintered article at a temperature between 250° and 700° C. ... | 03/09/1999 |
