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| Number | Title | Issue Date |
| 7361301 | System and method for consolidating powders This invention relates to a system and method for consolidating particulate material, such as particulate material, in order to achieve at least ninety-five percent (95%) or even ninety-eight percent (98%) of its maximum theoretical density using a relatively long d... | 04/22/2008 |
| 7347967 | Plastic system and method of porous bioimplant having a unified connector The present invention relates to a system and a method of manufacturing a porous bio-implant having a connecting member integrally formed therewith, and more particularly, to a system and a method of manufacturing a porous bio-implant in which a connecting member is... | 03/25/2008 |
| 7196297 | Process and system for thermally uniform materials processing The present invention provides a system and method for binder removal and sintering of materials such as ceramic materials and products, LTCC intervals, solid oxide fuel cells and powder metals. A combination of microwave and convection/radiation heating is employed... | 03/27/2007 |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 6776329 | Method for producing a heat-conducting connection between two work pieces A method for producing a heat-conducting connection between two work pieces (1, 2) includes the steps of first producing a porous sintered layer (3), interposed between the two work pieces (1, 2) and sintered onto every work piece (1, 2) across a certain area, and s... | 08/17/2004 |
| 6610246 | Sintering method and sintering apparatus A powder material is put into a cylindrical mold and electrodes are brought into contact with the side surface of the mold and a current is applied to sinter the material in the mold while a pressure is applied to the material. In this process, local temp... | 08/26/2003 |
| 6512216 | Microwave processing using highly microwave absorbing powdered material layers A method of heating an article with microwave energy is described in which a thin layer of highly microwave absorbent powdered material is provided around at least a portion of a container made of microwave transparent material. The article to be heated i... | 01/28/2003 |
| 6440768 | Thermoelectric semiconductor material and method of manufacturing the same The present invention provides a novel thermoelectric semiconductor material having excellent thermoelectric property which is not lowered like a conventional PbTe-based or PbSnTe-based semiconductor material even if a strength is improved by sintering. T... | 08/27/2002 |
| 6371746 | Method of electronic sintering method and mold for use in the method An electric sintering mold includes a clamping portion for clamping a powder material, the material clamped by the clamping portion being subjected to a pressure from a pressurizer and a pulsating electric current externally supplied, so that joule heat i... | 04/16/2002 |
| 6309594 | Metal consolidation process employing microwave heated pressure transmitting particulate A method of consolidating metal powder to form an object, includes: a) pressing the powder into a preform, and preheating the preform to elevated temperature, b) providing flowable pressure transmitting particles and transmitting microwaves into the particles ... | 10/30/2001 |
| 6200515 | One-step synthesis and consolidation of nanophase materials Solid reaction products with a dense nanocrystalline structure are formed from reactant particles with diameters in the nano-scale range by compacting the particles into a green body, then passing an electric current through the body causing Joule heating... | 03/13/2001 |
| 6183690 | Method of bonding a particle material to near theoretical density A method of bonding a particle material to near theoretical density, includes placing a particle material in a die. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and s... | 02/06/2001 |
| 6183689 | Process for sintering powder metal components A process for sintering green powder metal, metal alloy or metal composition parts employing microwave energy is described.... | 02/06/2001 |
| 5794113 | Simultaneous synthesis and densification by field-activated combustion A method for preparing a highly dense product from a powdered mixture of reactants, whereby simultaneous application of a high current and pressure enables synthesis and densification of a variety of high temperature materials. The combination of field-ac... | 08/11/1998 |
| 5760378 | Method of inductive bonding sintered compacts of heavy alloys A method of bonding two or more sintered compacts of tungsten heavy alloys. The method includes the steps of providing two or more sintered compacts of tungsten heavy alloy powder and then positioning the sintered compacts in adjacent alignment in a furna... | 06/02/1998 |
| 5745834 | Free form fabrication of metallic components A method of free form fabrication of metallic components, typically using computer aided design data, comprises selective laser binding and transient liquid sintering of blended powders. The powder blend includes a base metal alloy, a lower melting temper... | 04/28/1998 |
| 5623727 | Method for manufacturing powder metallurgical tooling A method for powder metallurgical manufacturing of an article wherein a refractory die is used to form an article without excessive shrinkage. The method includes the addition of coarse and fine particulate material and consolidating the material.... | 04/22/1997 |
| 5544194 | Apparatus for degreasing electrically conductive material Apparatus for the cleaning, especially degreasing, of electrically conductive material (9), for example metal and/or ceramic turning chips and/or grinding sludges, under vacuum conditions, essentially consisting of a container (4) and at least two electro... | 08/06/1996 |
| 5529746 | Process for the manufacture of high-density powder compacts The invention relates to a process for pressing electrically conductive powders to high-density compacts in dimensionally stable pressing molds, whereby the achievable compression density is greater than 96% and, in many cases, amounts to almost 100% of t... | 06/25/1996 |
| 5445789 | Method and apparatus for degreasing and compacting electrically conductive material A plunger charged as an electrode is received in a trough charged as a counter-electrode in order to heat material in the trough above the annealing temperature of metal material or the sintering temperature of ceramic-material. The trough and plunger are... | 08/29/1995 |
| 5427660 | Sintered composite and method of manufacture A sintered composite comprises capsule-like powder composite particles composed of core particles and an electrically conductive covering material which covers said core particles. The capsule-like powder composite particles are sintered in a sintering mo... | 06/27/1995 |
| 5403540 | Heating of formed metal structure by induction A method is presented for uniformly heating plastically deformable material, which comprises particles of electrically conducting matter. This method comprises inducing an electric current, or causing hysteresis loss within such material, by using electro... | 04/04/1995 |
| 5380482 | Method of manufacturing ingots for use in making objects having high heat, thermal shock, corrosion and wear resistance A method of manufacturing ingots for use in making objects having heat, thermal shock, corrosion and wear resistance by formulating a composition of about 17-80% TiB2 powder, about 0.0 to 4.0% Y2 O3 powder, and the balance... | 01/10/1995 |
| 5348694 | Method for electroconsolidation of a preformed particulate workpiece A method of consolidating particulate materials or combinations of such materials into shaped products of very low porosity. High compaction pressures are applied at temperatures in the range of sintering temperature of the materials being consolidated to... | 09/20/1994 |
| 5346667 | Method of manufacturing sintered aluminum alloy parts A method of manufacturing sintered Al-Si series alloy parts having complex configurations such as scroll shaped parts wherein Al-Si series alloy powder solidified via rapid cooling prepared by adding effective components such as Si, Cu, Mg, Fe, Mn, Zr and... | 09/13/1994 |
| 5306569 | Titanium-tungsten target material and manufacturing method thereof A titanium-tungsten target material capable of limiting the amount of particles generated during sputtering and a method of manufacturing this titanium-tungsten material. The titanium-tungsten target material has a titanium-tungsten alloy phase which occu... | 04/26/1994 |
| 5246638 | Process and apparatus for electroconsolidation The present invention is directed generally to apparatus for and improvements in powdered metal consolidation processes, some of which referred to as "electroconsolidation" processes, and more particularly to processes employing specially shaped rams or e... | 09/21/1993 |
| 5201962 | Method of making permanent magnet containing rare earth metal and ferrous component A method of manufacturing a permanent magnet which comprises applying one directional pressure and an electric current to an aggregate through a pair of electrodes to cause the aggregate to undergo a plastic deformation thereby to expand an axially projec... | 04/13/1993 |
| 5178691 | Process for producing a rare earth element-iron anisotropic magnet A process for producing a rare earth element-iron-boron anisotropic magnet that may generate a strong static magnetic field in vacant spaces of a magnetic circuit mounted in a motor is disclosed. The process comprises the steps of placing a billet produce... | 01/12/1993 |
| 5167915 | Process for producing a rare earth-iron-boron magnet A process for producing a rare earth-iron-boron magnet, which includes the steps of: (1) charging a melt spun powder of a rare earth-iron-boron magnet into at least one cavity, which is confined by a pair of electrodes inserted into a hole of an electrica... | 12/01/1992 |
| 5134260 | Method and apparatus for inductively heating powders or powder compacts for consolidation An apparatus for heating powders or powder compacts for consolidation in a pressure vessel having a chamber. There is a device for directly induction heating the powder or powder compact. Additionally, the apparatus is comprised of a device for compacting... | 07/28/1992 |
| 5038014 | Fabrication of components by layered deposition A component is fabricated by depositing a succession of overlying beads of a material, the pattern and position of the beads being assigned the proper characteristics of the corresponding section of the desired component. Shape definition is accomplished ... | 08/06/1991 |
| 4989153 | Perfected sintering machine and method of operation A sintering machine for applying heat and pressure to a die retained between two plate sets, includes a temperature sensor, a position sensor and a pressure sensor which are all connected to a computer for sensing the temperature of and pressure applied t... | 01/29/1991 |
| 4938673 | Isostatic pressing with microwave heating and method for same The invention includes an isostatic press supply of heat to a workpiece by microwave energy and a method for isostatically pressing a powdered ceramic or powdered metal material that is heated by microwave energy. The isostatic press includes a pressure v... | 07/03/1990 |
| 4933140 | Electrical heating of graphite grain employed in consolidation of objects A method of consolidating a body in any of initially powdered, sintered, fibrous, sponge, or other form capable of compaction, including the steps: providing a bed of flowable particles within a contained zone, the particulate including flowable and resil... | 06/12/1990 |
| 4929415 | Method of sintering powder A method for sintering and forming powder is disclosed. In this method a high voltage of 3 KV or more is applied to a mold filled with powder using an electrode which maintains a high current of 50 KA cm-2 or greater for a period of time from 1... | 05/29/1990 |
| 4855102 | Sintering method A sintering method and fusion welding method of the present invention are characterized in that energy is radiated to the black component of starting materials so as to convert it from the state of an energy absorber to the state of an energy reflector (t... | 08/08/1989 |
| 4853179 | Method of manufacturing heat resistant, high-strength structural members of sintered aluminum alloy This invention relates to a method of manufacturing a structural member made of a sintered Al alloy having heat resistance and high strength. A powder is used having a composition which makes it difficult to perform hot forging, i.e. 8.0 to 30.0 wt. % of ... | 08/01/1989 |
| 4853178 | Electrical heating of graphite grain employed in consolidation of objects A method of consolidating a body in any of initially powdered, sintered, fibrous, sponge, or other form capable of compaction, including the steps: providing a bed of flowable particles within a contained zone, the particulate including flowable and resil... | 08/01/1989 |
| 4704252 | Isostatic hot forming of powder metal material A crushed powder metal workpiece preform is enclosed in a shell or envelope of a ceramic liquid die material and is inductively heated through the ceramic material and then transferred to a pressure vessel wherein the liquid die material is pressurized to... | 11/03/1987 |
