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| Number | Title | Issue Date |
| 7318547 | Method for assembling parts made of materials based on SiC by non-reactive refractory brazing, brazing composition, and joint and assembly obtained by said method Method for assembling at least two pieces of silicon carbide based materials by non reactive refractory brazing, wherein these pieces are put into contact with a non reactive brazing solder composition and the assembly formed by the pieces and the brazing solder com... | 01/15/2008 |
| 7119400 | Isotopically pure silicon-on-insulator wafers and method of making same A semiconductor wafer structure having a device layer, an insulating layer, and a substrate which is capable of supporting increased semiconductor device densities or increased semiconductor device power. One or more of the layers includes an isotopically enriched s... | 10/10/2006 |
| 7083825 | Composition used in producing calcium-rich getter thin film An improved getter device and method for forming a calcium-rich getter thin film in an electronic vacuum device is disclosed. The getter device includes a powder of a Ca—Ba—Al ternary alloy composed of between 53% and 56.8% by weight of aluminum, from 36% to 41.... | 08/01/2006 |
| 7053457 | Opto-electronic component The invention relates to an opto-electronic component for converting electromagnetic radiation into an intensity-dependent photocurrent, comprising a substrate (1) with a microelectronic circuit whose surface is provided with a first layer (7) which is... | 05/30/2006 |
| 7029644 | Method for producing a polycrystalline silicon, polycrystalline silicon and solar cell Silicon raw material and gallium dopant are charged and mixed in a crucible. The silicon raw material is heated to a predetermined temperature, and melted under an inactive gas atmosphere. The melted silicon raw material is cooled down to be crystallized to make a p... | 04/18/2006 |
| 7002071 | Thermoelectric conversion material and method of producing the same A thermoelectric conversion material is formed of a polycrystal structure of crystal grains composed of a silicon-rich phase, and an added element-rich phase in which at least one type of added element is deposited at the grain boundary thereof, the result of which ... | 02/21/2006 |
| 6793781 | Cathode targets of silicon and transition metal Silicon-chromium cathode targets having 5 to 80 weight percent chromium are used to sputter absorbing coatings of silicon-chromium-containing material in atmospheres of inert gas such as argon, reactive gases such as nitrogen, oxygen, and mixtures thereof to form me... | 09/21/2004 |
| 6723183 | Silicide target for depositing less embrittling gate oxide and method of manufacturing silicide target The present invention relates to a non-brittle silicide target for forming a gate oxide film made of MSi0.8-1.2 (M: Zr, Hf), and provides a non-brittle silicide target suitable for forming a ZrO2.SiO2 film or HfO2.SiO... | 04/20/2004 |
| 6521356 | Oxidation resistant coatings for niobium-based silicide composites An environmentally resistant coating for improving the oxidation resistance of a niobium-based refractory metal intermetallic composite (Nb-based RMIC) at high temperatures, the environmentally resistant coating comprising silicon, titanium, chromium, and... | 02/18/2003 |
| 6497968 | Oxidation resistant coatings for molybdenum silicide-based composite articles An environmentally resistant coating comprising silicon, titanium, chromium, and a balance of niobium and molybdenum for turbine components formed from molybdenum silicide-based composites. The turbine component may further include a thermal barrier coati... | 12/24/2002 |
| 6423196 | Method of making Ni-Si magnetron sputtering targets and targets made thereby A method for making a nickel/silicon sputter target, targets made thereby and sputtering processes using such targets. The method includes the step of blending molten nickel with sufficient molten silicon so that the blend may be cast to form an alloy con... | 07/23/2002 |
| 6391255 | Metallurgical-grade silicon with a controlled structure for use in halosilane synthesis A metallurgical-grade silicon for use in alkyl or aryl halosilane synthesis, and having a structure consisting of primary silicon crystals and intermetallic compounds, particularly of silicon, aluminum and calcium, wherein at least 90% of the primary sili... | 05/21/2002 |
| 6365098 | Phoenix-1, a structural material based on nuclear isotopic concentrations of silicon The technology of altering nuclear, chemical, physical and electrical characteristics of a material by changing isotopic concentrations is not new. It has been used for many years primarily in nuclear reactor fuel enrichments and in production of radioact... | 04/02/2002 |
| 6365014 | Cathode targets of silicon and transition metal Silicon-chromium cathode targets comprising 5 to 80 weight percent chromium are disclosed for sputtering absorbing coatings of silicon-chromium alloy in atmospheres comprising inert gas, reactive gases such as nitrogen, oxygen, and mixtures thereof which ... | 04/02/2002 |
| 6313398 | Ga-doped multi-crytsalline silicon, Ga-doped multi-crystalline silicon wafer and method for producing the same There are disclosed multi-crystalline silicon which is added with Ga (gallium) as a dopant and a method for producing Ga-doped multi-crystalline silicon, which comprises adding Ga to silicon melt in a crucible, which is melted by heating, and cooling the ... | 11/06/2001 |
| 6221499 | Method using a thick joint for joining parts in SiC-based materials by refractory brazing and refractory thick joint thus obtained The present invention relates to a method of joining at least two parts of silicon carbide based material by refractory brazing in which these parts are brought into contact with an intermetallic braze alloy and said parts and braze alloy are heated to a ... | 04/24/2001 |
| 6214177 | Method of producing a silicon/aluminum sputtering target A method of producing a silicon aluminum sputtering target is provided. The target is formed from a powder base of between about 80% to about 95% by weight silicon and about 5% to about 20% by weight aluminum which is placed in a containment unit, heated ... | 04/10/2001 |
| 6177045 | Composition and method for inoculating low sulphur grey iron A composition for inoculating grey iron, particularly low sulphur grey iron, comprises by weight: rare earth 1.0-4.0%, preferably 1.5-2.5%; strontium 0.5-1.5%, preferably 0.7-1.0%; calcium 1.5% maximum, preferably 0.5% maximum; aluminum 2.0% maximum, pref... | 01/23/2001 |
| 6127047 | High temperature alloys High temperature alloys resistant to degradation and oxidation are provided. In accordance with preferred embodiments, alloys comprising from about 0.1 to about 50 atomic percent silicon, from about 10 to about 80 atomic percent aluminum, and at least one... | 10/03/2000 |
| 6113667 | Brazing aluminum alloy powder composition and brazing method using such powder composition A brazing powder comprises a single powder or mixture powder that is composed of one or more type of elements consisting of Al, Si and Zn, having the composition of Al--Si--Zn hypereutectic alloy in terms of the total amount. The brazing powder comprises ... | 09/05/2000 |
| 6102983 | Cast iron inoculant and method for production of cast iron inoculant The invention relates to an inoculant for the manufacture of cast iron with lamellar, compacted or spheroidal graphite. The inoculant comprises between 40 and 80% by weight of silicon, between 0.5 and 10% by weight of calcium and/or strontium and/or bariu... | 08/15/2000 |
| 5975407 | Method using a thick joint for joining parts in SiC-based materials by refractory brazing and refractory thick joint thus obtained A method of joining at least two parts in silicon carbide based material by refractory brazing in which these parts are brought into contact with an intermetallic braze alloy and said parts and braze alloy are heated to a braze temperature equivalent to t... | 11/02/1999 |
| 5888452 | Hydrogenated amorphous silicon alloys Novel hydrogenated amorphous silicon alloys are disclosed. Hydrogenated amorphous silicon alloys produced by PECVD are disclosed. A method is also disclosed for the preparation of novel hydrogenated amorphous silicon alloys for use as thin films. The meth... | 03/30/1999 |
| 5836505 | Joining by brazing of ceramic materials containing silicon carbide The present invention relates to joining by brazing ceramic elements comprising SiC. The purpose of the invention is to provide a braze alloy which gives a brazed joint resistant to fluorine effluents and having controlled reactivity with SiC. This purpos... | 11/17/1998 |
| 5833772 | Silicon alloy, method for producing the alloy and method for production of consolidated products from silicon The invention relates to a rapidly solidified silicon-based alloy, containing 2-40% by weight Al, 2-45% by weight Ti, 0-10% by weight of one or more of the elements V, Cr, Fe, Mn, Ni, Co, 0-1% by weight of one or more of the elements B, Sr and P, the rest... | 11/10/1998 |
| 5782955 | Low oxygen-content metallurgical silicon and ferrosilicon A metallurgical silicon or ferrosilicon in the form of granulates having an average size of less than 10 mm and in which the total oxygen concentration is less than 0.05% by weight, and a process for manufacture of this silicon or ferrosilicon consisting ... | 07/21/1998 |
| 5772728 | Method for upgrading of silicon-containing residues obtained after leaching of copper-containing residues from chlorosilane synthesis The present invention relates to a method for upgrading silicon-containing solid residues obtained after leaching of copper from copper-containing residues from direct synthesis of organochlorosilanes. Solid residue, optionally together with an oxidation ... | 06/30/1998 |
| 5733502 | Ferroalloy for inoculation of spherulitic graphite irons A ferrosilicon-based ferroalloy for inoculation of spherulitic graphite irons containing (by weight) from 0.005% to 3% rare earths, 0.005% to 3% bismuth, lead and/or antimony, and 0.3% to 3% calcium, and is characterized by the fact that Si/Fe>2 and conta... | 03/31/1998 |
| 5721061 | Oxidation-resistant coating for niobium-base alloys Si-Fe-Cr base coating alloys that significantly promote the oxidation resistance of niobium-base alloys and intermetallic materials when deposited and reaction bonded to the niobium-base material. The coating alloys are deposited and then reaction bonded ... | 02/24/1998 |
| 5605583 | Metallurgical silicon with controlled microstructure for the preparation of halogenosilanes A metallurgical silicon with controlled microstructure for the preparation of halogenosilanes, characterized by an image of the microstructure obtained with the scanning electron microscope which is processed by binarization between an intermetallic phase... | 02/25/1997 |
| 5582791 | Method for grain refining of aluminum and grain refining alloy The present invention relates to a method for grain refining of aluminium and aluminium alloys wherein a siliconboron alloy containing between 0.01 to 4.0 % by weight of boron is added to molten aluminium or aluminium alloy in such an amount that the resu... | 12/10/1996 |
| 5560993 | Oxide-coated silicon carbide material and method of manufacturing same A lanthanoid silicide-coated silicon carbide material whereof the surface is coated with a silicide, this silicide being a reaction product of an oxide of a lanthanoid rare earth element or yttrium with silicon carbide, or a reaction product of a compound... | 10/01/1996 |
| 5447683 | Braze for silicon carbide bodies Dense monolithic SiC or SiC ceramic composites are strongly bonded using brazing compositions which, in their preferred composition, include a braze alloy consisting essentially of less than 50 weight percent silicon and at least two metals from the group... | 09/05/1995 |
| 5427952 | Analytical method for nonmetallic contaminates in silicon The present invention is a method for analyzing silicon for nonmetallic contaminants. The method comprises: (A) forming an alloy comprising silicon and a metal which promotes separation of nonmetallic contaminants present in the alloy, (B) separating the ... | 06/27/1995 |
| 5424031 | Grain refining alloy and a method for grain refining of aluminum and aluminum alloys The present invention relates to a method for grain refining of aluminium and aluminium alloys wherein a siliconboron alloy containing between 0.01 to 4.0% by weight of boron is added to molten aluminium or aluminium alloy in such an amount that the resul... | 06/13/1995 |
| 5330590 | High temperature creep and oxidation resistant chromium silicide matrix alloy containing molybdenum Cr3 Si is alloyed with molybdenum which produces a two-phase microstructure of (Cr,Mo)3 Si and (Cr,Mo)5 Si3. About 50 weight percent of molybdenum is present in the alloy. The alloy forms two protective oxides o... | 07/19/1994 |
| 5230753 | Photostable amorphous silicon-germanium alloys Alloys of hydrogenated amorphous silicon and germanium are disclosed that exhibit unexpectedly low saturated defect densities, particularly relative to the initial defect densities of the alloys, so as to render them substantially resistant to Staebler-Wr... | 07/27/1993 |
| 5209901 | Agent for the treatment of cast iron melts Disclosed is an agent based on ferrosilicon for the treatment of cast iron melts before treatment with spheroidal graphite-inducing elements, especially magnesium, wherein, as additive elements, the agent additionally contains calcium, aluminum, manganese... | 05/11/1993 |
| 5080862 | Iridium silicon alloy An alloy having a very high resistance to oxidation is taught. The alloy contains between 30 and 75 atom percent of silicon in an iridium base. The alloy may be used in the form of a surface coating to protect structural elements of other materials from o... | 01/14/1992 |
| 5051414 | Inhibition of HIV and other retroviruses by polyoxoanions There are disclosed pharmaceutical compositions containing polyoxoanions, methods of using them alone or in combination with other compounds, such as AZT and Poly-I:C for the treatment of retroviruses. Also disclosed are novel polyoxoanions.... | 09/24/1991 |
