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| Number | Title | Issue Date |
| 8043555 | Cemented tungsten carbide rock bit cone An earth-boring bit has a steel body and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone and cutting elements are formed of cemented tungsten carbide. The cone may be manufactured by applyin... | 10/25/2011 |
| 7326892 | Process of microwave brazing with powder materials A process for heating a powder material by microwave radiation so that heating of the powder material is selective and sufficient to cause complete melting of the particles. The process entails providing a mass of powder comprising a quantity of filler particles of ... | 02/05/2008 |
| 7135288 | Combinatorial synthesis of ceramic materials A combinatorial library includes a gelcast substrate defining a plurality of cavities in at least one surface thereof; and a plurality of gelcast test materials in the cavities, at least two of the test materials differing from the substrate in at least one composit... | 11/14/2006 |
| 7052526 | Magnesium base composite material and its manufacturing method A magnesium base composite material is provided such that compound particles generated by a solid-phase reaction with magnesium are uniformly dispersed in a magnesium alloy body. The compound particles dispersed in the body comprise magnesium silicide (Mg2 | 05/30/2006 |
| 7045093 | Method for manufacturing sintered magnet A method for manufacturing a sintered magnet includes the steps of producing a green compact of powder for the sintered magnet, machining the green compact with a wire-saw, and sintering the green compact. ... | 05/16/2006 |
| 7025930 | Process for handling powder green compacts, and rare earth metal-based magnet In a process for handling green compacts made from a rare earth metal-based magnetic alloy powder by a press machine to slide, on a sintering support plate, the green compacts, the support plate used has a surface roughness degree Ra in a range of 0.6 to 47 μm. At ... | 04/11/2006 |
| 6926777 | Method for producing rod-shaped permanent magnets The invention relates to a method for producing rod-shaped permanent magnets according to which pressed parts (2) are produced that are then assembled to a rod-shaped green product. Said green product is subsequently sintered, whereby a rod-shaped single-piec... | 08/09/2005 |
| 6649106 | Method for debindering of powder molded body A method for debindering of powder molded body, including dipping, in an extracting solution an aqueous surfactant solution, a ceramic powder or metal powder molded body containing a binder with at least two kinds of binder components, to selectively extr... | 11/18/2003 |
| 6554609 | Nanotechnology for electrical devices Nanostructured non-stoichiometric non-equilibrium materials are disclosed. Novel electromagnetic materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for develop... | 04/29/2003 |
| 6413472 | Method of manufacturing screws A method of manufacturing screws which can form screws each having a desired hollow axial bore easily and having excellent machinability is provided. The method comprises the steps of (A) producing a green body containing metal powder by means of extrusio... | 07/02/2002 |
| 6355209 | Metal consolidation process applicable to functionally gradient material (FGM) compositons of tungsten, nickel, iron, and cobalt A method of consolidating metal powder to form an object that includes pressing the powder into a preform, and preheating the preform to elevated temperature; providing flowable pressure transmitting particles and transmitting microwaves into the particle... | 03/12/2002 |
| 6232368 | Ester cured binders An embodiment of the present invention provides a method for improving the tensile strength of foundry cores and molds over what may be conventionally achieved. The use of acidic methylene compounds in binder compositions which include strongly alkaline p... | 05/15/2001 |
| 6090178 | Frangible metal bullets, ammunition and method of making such articles A frangible metal bullet, a method for making it, and ammunition made therefrom. The frangible metal bullet is formed from a mixture of metal particles and metal or metalloid binder forming material which is compacted into the desired shape, heated to a t... | 07/18/2000 |
| 6051184 | Metal powder injection moldable composition, and injection molding and sintering method using such composition A metal powder injection moldable composition which hardly causes debinding deformation is obtained. This composition consists of a metal powder and an organic binder. The components which constitute the organic binder are: a. polyoxymethylene having a Vicat s... | 04/18/2000 |
| 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 |
| 5997605 | Method of producing mating parts The present invention concerns a method of producing powder-metallurgical compacted components, which during subsequent processing are split into individual parts mating in pairs, sintered and optionally heat-treated and remated. According to the process,... | 12/07/1999 |
| 5993729 | Treatment of iron powder compacts, especially for magnetic applications Post-compaction treatments of iron compacts to improve the mechanical strength of the compacts are provided. Powder is compacted into the desired part. The part is then subjected to a strengthening operation. This operation involves a heat treatment at a ... | 11/30/1999 |
| 5932055 | Direct metal fabrication (DMF) using a carbon precursor to bind the "green form" part and catalyze a eutectic reducing element in a supersolidus liquid phase sintering (SLPS) process Direct Metal Fabrication of metal parts is accomplished with a continuous thermal process in which partial reduction of the "green form" part leaves a thin carbon film that maintains the part's structural integrity. The remaining carbon catalyzes a eutect... | 08/03/1999 |
| 5912429 | High temperature thermoelectric material and its production method Thermoelectric material for high temperature use made of a sintered body of a relative density of at least 75% consisting mainly of cobalt antimony compounds having an elemental ratio Sb/(Co+additives)=x of 2.7 | 06/15/1999 |
| 5854379 | Thermal decomposition degreasing method and molded products thereof A low-cost thermal decomposition degreasing method capable of drastically reducing the time required for a degreasing process which involves heating, vaporization and thermal decomposition, while assuring the shape retention property of an injection molde... | 12/29/1998 |
| 5842108 | Mechano-chemical process for production of high density and ultrafine W/Cu composite material A method for producing high density and ultrafine W/Cu bulk material by a mechano-chemical process is disclosed. In the method of this invention, metal salts as start materials are spray-dried and prepare W--Cu precursor powder having uniformly-dispersed ... | 11/24/1998 |
| 5815789 | Method for producing self lubricating powder metal cylinder bore liners A method for producing self lubricating powder metal cylinder bore liners for an internal combustion engine includes the steps of loading a powder metal mixture into a die cavity, compacting the powder metal mixture in the die cavity and forming the powde... | 09/29/1998 |
| 5774780 | Process for production of a shaped part A process for the production of a shaped part which is produced from a high-melting point metal powder with crystalline sinter-activating additives. The process includes the steps of preparing, compressing and sintering the metal powder. Prior to the sint... | 06/30/1998 |
| 5736092 | Microwave sintering process A microwave susceptor bed useful for sintering ceramics, ceramic composites and metal powders is described. The susceptor bed includes granules of a major amount of a microwave susceptor material, and a minor amount of a refractory parting agent, either d... | 04/07/1998 |
| 5730925 | Method and apparatus for producing a three-dimensional object In an apparatus for producing a three-dimensional object by laser sintering the object is produced by successive solidification of layers of a powder material at points corresponding to a cross-section of said object using radiation for solidifying said p... | 03/24/1998 |
| 5711866 | Acid assisted cold welding and intermetallic formation and dental applications thereof A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constitu... | 01/27/1998 |
| 5701576 | Manufacturing method of plastically formed product The manufacturing method of plastically formed products prevents the generation of cracks at the time of plastic working, thereby increasing the productivity. It is also prevented that the metallic particles constituting the product become large and rough... | 12/23/1997 |
| 5662863 | Process for producing structural member of aluminum alloy A powder preform of aluminum alloy powder is subjected to a heating treatment and then to a compacting and hardening process under a pressure to produce a structural member of aluminum alloy. The aluminum alloy powder used is one having a non-equilibrium ... | 09/02/1997 |
| 5611978 | Production of sintered moldings Sintered moldings are produced by molding a mixture of a sinterable ceramic or metallic powder and polyoxymethylene or a copolymer containing a majority of oxymethylene units as binder to give a compact, removing the binder by treatment with a gaseous aci... | 03/18/1997 |
| 5590386 | Method of making an alloy of tungsten and lanthana In a method of making alloy of tungsten and lanthana, lanthanum hydroxide is blended with tungsten metal powder, the mixture is pressed to form a pressed ingot, optionally presintered, and sintered to form the alloy. The use of lanthanum hydroxide as the ... | 12/31/1996 |
| 5574954 | Erosion-resistant titanium carbide composites and processes for making them A composite, a sintered product of the composite, and a process for producing products from this composite. The composite has a very high volummetric proportion of TiC, and its remainder of a matrix. The TiC constitutes at least 70% by volume and as much ... | 11/12/1996 |
| 5561834 | Pneumatic isostatic compaction of sintered compacts A process for pneumatically isostatically compacting a sintered compact to densify the compact wherein the surface of the compact is oxidized to form a gas impervious oxide barrier on said surface before the compact is subjected to the pneumatic isostatic... | 10/01/1996 |
| 5531958 | Process for improving the debinding rate of ceramic and metal injection molded products The present invention provides a method of increasing debinding rates in Powder Injection Molding of metal and ceramic parts by use of a catalytic binding system.... | 07/02/1996 |
| 5523049 | Heat sink and method of fabricating A heat sink composed of thermally conductive particles dispersed in a monolithic structure having a continuous microstructure; and the method of forming a heat sink by molding the heat sink from a thermoplastic or epoxy material which has been filled with... | 06/04/1996 |
| 5470525 | Removal of binder from Ta products Tantalum anode pellets or tantalum powders are treated to remove carbon content (mostly attributable to binders used in pressing the powders to pellet form and/or sintering of the pellets) by an aqueous leach at 50°-200° F. in lieu of the conventional c... | 11/28/1995 |
| 5466311 | Method of manufacturing a Ni-Al intermetallic compound matrix composite A method of manufacturing an Ni--Al intermetallic compound matrix composite comprising steps of a) providing an aluminum powder, b) providing a reinforced material, c) providing a reducing solution containing a reducing agent and nickel ions to be reduced... | 11/14/1995 |
| 5466414 | Process for fabrication of sintered metal components A process for fabrication of sintered metal components having improved mechanical, physical and wear-resistent properties.... | 11/14/1995 |
| 5460775 | Nitrogen-combined aluminum sintered alloys and method of producing the same The invention provides aluminum sintered alloys with high dimensional accuracy and high density which are superior in mechanical and physical characteristics as well as wear resistance, and a method of producing such alloys not by plastic working but by a... | 10/24/1995 |
| 5460776 | Process for producing connected sintered articles The invention relates to a method of producing connected sintered articles obtained by breaking a unitary preform. It is characterized in that: a) a preform is pressed from powdered metals while imprinting in it a superficial groove (3) located in a plane for ... | 10/24/1995 |
| 5454998 | Method for producing permanent magnet A permanent magnet is provided which is comprised of, by atomic percent: 10-24% R; 2-28% boron, 0.1-18.12% hydrogen; and balance being M. R is at least one element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y and Sc, and M i... | 10/03/1995 |
