| Patent Number |
Title Of Patent |
Date Issued |
| 6221511 |
Metal-ceramic composite substrates, producing methods thereof and brazing materials for use in s |
April 24, 2001 |
| In the present invention, a metal-ceramic composite substitute is produced by joining a metal plate to a ceramic substrate by using a brazing material in a paste form prepared by adding 10-14 parts by weight of a vehicle to 100 parts by weight of a powder of which the solid centent c |
| 6221322 |
Strontium nitrate and method for manufacturing same |
April 24, 2001 |
| Low-cost, high-purity strontium nitrate that is low in Ba, Na, Ca, Cr, and other impurities and that is suitable for use in airbags or the like is provided. High-purity strontium nitrate having a Ba content of 0.01 wt % or lower, an Na content of 0.005 wt % or lower, a Ca content of 0.01 |
| 6221232 |
Electrolytic refining method for gallium and apparatus for use in the method |
April 24, 2001 |
| An electrolytic refining method for gallium by depositing refined gallium on a cathode in an electrolytic solution using a melted raw gallium material as an anode in an electrolytic cell is disclosed, comprising applying a centrifugal force to the melted raw gallium material and disc |
| 6216333 |
Oxide superconductor current lead and method of manufacturing the same |
April 17, 2001 |
| An oxide superconductor current lead provided with a rod-like or pipe-like oxide superconductor, at each of end parts of which a metallic electrode is formed. In this oxide superconductor current lead, the oxide superconductor is a Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.X supercon |
| 6197134 |
Processes for producing fcc metals |
March 6, 2001 |
| A process for producing a fcc metal consisting of copper having random orientations comprising cross rolling which is performed to achieve a total draft of at least 20% with the rolling axis being offset at 15.degree. or more in each pass to a total offset of at least 90.degree., and |
| 6183875 |
Electronic circuit substrates fabricated from an aluminum ceramic composite material |
February 6, 2001 |
| An electronic circuit substrate including an aluminum-ceramic composite material having an electronic circuit formed on aluminum or an aluminum alloy plate of the aluminum-ceramic composite material which is prepared directly solidifying molten aluminum or an aluminum alloy on at least a |
| 6180174 |
Process for the production of a coated copper alloy |
January 30, 2001 |
| The invention provides a process for producing a coated Cu alloy having a surface which has a low coefficient of friction and a high resistance to abrasion and is suitable for fabricating connectors, charging-sockets of electric automobiles etc. The coated Cu alloy is produced by coating |
| 6172007 |
Oxide superconductor |
January 9, 2001 |
| An oxide superconductor which exhibits an uniform and high critical current is disclosed. Further, a method of manufacturing this oxide superconductor is disclosed, namely, a RE--Ba--Cu--O oxide superconductor (RE is one or more kinds of rare earth elements including Y) by performing a t |
| 6171692 |
Particle for lower layer of coating type magnetic recording medium |
January 9, 2001 |
| Iron oxyhydroxide particles that are composed of acicular particles having an average major axis of 0.01 to 0.5 .mu.m and containing not less than 0.1 wt. % and not more than 30 wt. % of Al in the iron oxyhydroxide and that release not less than 0.1 wt. % and not more than 2 wt. % of H.s |
| 6149975 |
Potassium-containing thin film and process for producing the same |
November 21, 2000 |
| When a potassium-containing substance is formed in to a film using an organic potassium complex as a potassium source by the CVD method, it is prevented that the film formation rate is changed with the lapse of time, and the potassium content in the film thus formed is changed.As a potas |
| 6132529 |
Leadframe made of a high-strength, high-electroconductivity copper alloy |
October 17, 2000 |
| A leadframe of a single frame structure for supporting leads on IC chips. The leadframe is made of a high-strength, high-electroconductivity copper alloy. The copper alloy is produced by preparing an ingot of a copper alloy of 0.05-0.40 wt. % Fe, 0.05-0.40 wt. % Ni, 0.01-0.30 wt. % P, an |
| 6121178 |
Sintered ITO and an ITO sputtering target |
September 19, 2000 |
| Sintered ITO having a relative density of at least 88% and an oxygen content of 15.5-17.0 wt %, as well as an ITO sputtering target made of this sintered ITO. Using the target, an optimal range for the proportion of oxygen in a mixture of argon and oxygen gases used as a sputtering a |
| 6106636 |
Method and apparatus for controlling the atmosphere in a heat treatment furnace |
August 22, 2000 |
| In a method of and apparatus for controlling an atmosphere in a heat treatment furnace according to the present invention, a carburizing is carried out while supplying a hydrocarbon series gas and an oxidization gas into the furnace. The quantity of a residual CH.sub.4, a partial pre |
| 6103670 |
Method of manufacturing oxide superconductor containing Ag and having substantially same crystal |
August 15, 2000 |
| An oxide superconductor which has high mechanical strength and exhibits favorable magnetic properties and high resistance to environment. Further, a method of manufacturing this oxide superconductor, namely, a method of manufacturing a RE--Ba--Cu--O oxide superconductor (RE is one or mor |
| 6099982 |
Starting powders for ITO production, ITO sinters and processes for producing such starting powde |
August 8, 2000 |
| The starting salts for ITO production, precipitant and the conditions for reaction, calcination, etc. are specified such as to synthesize a starting oxide adapted to be free from volatile components such as halides and lower oxides; the starting oxide is dispersed to particles having a |
| 6086845 |
Silver oxide for use in cells and a process for producing the same |
July 11, 2000 |
| An aqueous sodium carbonate solution is added in an equivalent amount to an aqueous silver nitrate solution (Ag=100 g/L) under stirring and, with nitric acid and sodium hydroxide being added to adjust the pH to 5.5-6.5, a silver carbonate precipitate is formed and subsequently washed |
| 6086741 |
Process for sulfurizing treatment of ferrous articles |
July 11, 2000 |
| A process for sulfurizing treatment of ferrous articles comprises positioning an electrolysis crucible containing a molten-salt bath of potassium thiocyanate and sodium thiocyanate and a pretreatment crucible containing a molten-salt bath of substantially the same composition adjacen |
| 6077496 |
Positive electrode active material for nonaqueous secondary cells and a process for producing sa |
June 20, 2000 |
| The mixed powders of a lithium compound and a transition metal based compound are formed into shaped parts, which are packed to form a bed 6 on a porous plate 5 in the bottom of a reaction vessel 7 placed on a support 10 in a firing furnace 8 equipped with an electric heater; the packed |
| 6071592 |
Metal-ceramic composite substrate |
June 6, 2000 |
| A metal-ceramic composite circuit substrate having a ceramic substrate and a metal plate joined to at least one main surface of the ceramic substrate, the rate of voids formed on at least a joint surface at a semiconductor mounting portion of the metal plate per unit surface area bei |
| 6068777 |
Method of treatment for rendering halogenated organic compounds harmless |
May 30, 2000 |
| The reduction of halogenated organic compounds with an iron powder can be markedly accelerated to realize an enhanced reaction rate by the combined use of a reducing substance that is water-soluble and which exhibits weak acidity in water. The reducing substance such as sodium hydrogensu |
| 6061160 |
Component device for optical communication |
May 9, 2000 |
| A component device for optical communication comprising a reflector and a lens. The reflector is in the form of a deep dish with a height B of 0.2-0.4 mm, a bottom diameter A of 0.7-1.1 mm and the side wall having an angle C of 40-85 degrees. The lens is a hemisphere formed on the re |
| 6054762 |
Semiconductor substrates of high reliability ceramic metal composites |
April 25, 2000 |
| A paste of active metallic brazing material is applied to the entire surface of each side of aluminum nitride or alumina ceramic substrate 1; circuit forming copper plate 3 having a thickness of 0.3 mm is placed in contact with one surface of the substrate and a heat dissipating copper |
| 6051078 |
Method and apparatus for controlling the atmosphere in heat treatment furnace |
April 18, 2000 |
| In a method of and apparatus for controlling an atmosphere in a heat treatment furnace according to the present invention, a carburizing is carried out while supplying a hydrocarbon series gas and an oxidization gas into the furnace, and the supply of the hydrocarbon series gas is st |
| 6040067 |
Hard coated copper alloys |
March 21, 2000 |
| The invention provides a coated Cu alloy and a process for producing the coated Cu alloy having a surface which has a low coefficient of friction and a high resistance to abrasion and is suitable for fabricating connectors, charging-sockets of electric automobiles etc. The coated Cu |
| 6040043 |
Particles for lower layer of coating type magnetic recording medium |
March 21, 2000 |
| Iron oxyhydroxide particles that are composed of acicular particles having an average major axis of 0.01 to 0.5 .mu.m and containing not less than 0.1 wt. % and not more than 30 wt. % of Al in the iron oxyhydroxide and that release not less than 0.1 wt. % and not more than 2 wt. % of H.s |
| 6037485 |
CVD precursors and film preparation method using the same |
March 14, 2000 |
| A CVD precursor that is a precursor in film preparation by the CVD method, comprising a metalorganic compound containing a metal element constituting the film (called "main compound") having blended therewith another organic compound, the other organic compound having a lower vapor press |
| 6030600 |
Silver oxide for use in cells and a process for producing the same |
February 29, 2000 |
| An aqueous sodium carbonate solution is added in an equivalent amount to an aqueous silver nitrate solution (Ag=100 g/L) under stirring and, with nitric acid and sodium hydroxide being added to adjust the pH to 5.5-6.5, a silver carbonate precipitate is formed and subsequently washed |
| 6022489 |
Reagent for decomposing fluorocarbons |
February 8, 2000 |
| Fluorocarbons including perfluorocarbons and hydrofluorocarbons are highly efficiently decomposed by contacting a gaseous fluorocarbon with a reagent comprising carbon and an alkaline earth metal or carbon, an alkaline earth metal and an alkali metal at an elevated temperature, the decom |
| 6020945 |
Display device with a transparent optical filter |
February 1, 2000 |
| Optical filter which is adapted to prevent the reflection of external light and improve a signal level of a signal sent from a display device by preventing attenuation thereof, and which is further adapted to prevent a change in hue of an image and to improve the hue, contrast and bright |
| 6013357 |
Power module circuit board and a process for the manufacture thereof |
January 11, 2000 |
| A conductor pattern is formed on at least one surface of an AlN- or Si.sub.3 N.sub.4 -based ceramic substrate which is such that the ratio between the principal metal component binding with N to form the ceramic mass and the B in the BN remaining on the surface layer is no more than |
| 5965193 |
Process for preparing a ceramic electronic circuit board and process for preparing aluminum or a |
October 12, 1999 |
| Molten aluminum and a ceramic substrate are held in direct contact with each other and thereafter cooled to have the aluminum joined directly to the ceramic substrate. This method is capable of consistent and easy production of aluminum-ceramics composite substrates having satisfactory |
| 5959755 |
Lamp apparatus for optical communication |
September 28, 1999 |
| The improved lamp apparatus comprises at least a trough-shaped main mirror having a parabolic inner surface, a pair of plane mirrors inclined at opposite ends of said main mirror in such a way as to leave the inner surface of said main mirror open, two light-emitting devices for optical |
| 5958840 |
Oxide superconductor containing Ag and having substantially same crystal orientation, and method |
September 28, 1999 |
| An oxide superconductor which has high mechanical strength and exhibits favorable magnetic properties and high resistance to environment. Further, a method of manufacturing this oxide superconductor, namely, a method of manufacturing a RE--Ba--Cu--O oxide superconductor (RE is one or mor |
| 5955686 |
Brazing materials for producing metal-ceramics composite substrates |
September 21, 1999 |
| A brazing material having 0.25-0.9 wt % of titanium oxide added to a basic formula consisting of 60-94.25 wt % Ag, 5-30 wt % Cu and 0.5-4.5 wt % of an active metal is processed to form a paste, which is applied to an AlN substrate and overlaid with a copper plate and heat treated to form |
| 5952047 |
CVD precursors and film preparation method using the same |
September 14, 1999 |
| A CVD precursor that is a precursor in film preparation by the CVD method, comprising a metalorganic compound containing a metal element constituting the film (called "main compound") having blended therewith another organic compound, the other organic compound having a lower vapor press |
| 5914358 |
Conductive paste compound for via hole filling, printed circuit board which uses the conductive |
June 22, 1999 |
| A conductive paste compound for via hole filling includes a conductive filler at 80 to 92 weight percent with an average particle size of from 0.5 to 20 .mu.m and specific surface of from 0.1 to 1.5 m.sup.2 /g, a liquid epoxy resin at 4.5 to 20 weight percent containing 2 or more epoxy |
| 5902676 |
Coating type magnetic recording medium having a multilayer structure |
May 11, 1999 |
| A coating type magnetic recording medium having a multilayer structure exhibits excellent strength, surface smoothness, and weather resistance is formed on a substrate, and comprises a magnetic layer of magnetic particles dispersed in a resinous binder, and a non-magnetic layer of no |
| 5868871 |
Method and apparatus for carburizing, quenching and tempering |
February 9, 1999 |
| Method and apparatus for carburizing, quenching and tempering workpieces, by which the step of carburizing can be incorporated into a machining and manufacturing process to be performed by an on-line machining and manufacturing system as one stage thereof, and by which high-quality t |
| 5849668 |
Oxide superconductor and method for manufacturing the same |
December 15, 1998 |
| An oxide superconductor which exhibits an uniform and high critical current density. Further, a method of manufacturing this oxide superconductor, namely, a RE--Ba--Cu--O oxide superconductor (RE is one or more kinds of rare earth elements including Y) by performing a treatment, which in |
| 5849424 |
Hard coated copper alloys, process for production thereof and connector terminals made therefrom |
December 15, 1998 |
| A coated Cu alloy having a high hardness surface which contains intermetallic compounds consisting essentially of Cu and Sn is produced by coating the surface of a Cu alloy with Sn and heat treating the coated Cu alloy to form on the surface thereof a high hardness coating containing |
| 5837402 |
Zinc powders for use in batteries and a secondary alkaline zinc battery using said zinc powders |
November 17, 1998 |
| Zinc powder comprising particles having part or all of their surfaces coated either with copper and/or indium or with silver is used as a battery material or an active material for the negative electrode in a battery. The powder can be used as an anode active material in a secondary |
| 5814168 |
Process for producing high-strength, high-electroconductivity copper-base alloys |
September 29, 1998 |
| High-strength, high-electroconductivity copper alloys are produced by preparing an ingot of a copper alloy containing 0.05-0.40 wt % Fe, 0.05-0.40 wt % Ni, 0.01-0.30 wt % P, and optionally a total of 0.03-0.50 wt % of either Sn or Zn or both and a total of 0.05-0.50 wt % of at least |
| 5795538 |
Apparatus for steel hardening and process therefor |
August 18, 1998 |
| In a method for quenching metal parts, a quenching chamber is provided in which the quenching oil is continuously supplied from below the steel parts and circulated upward through the parts in a laminar flow. The circulation is accomplished by feeding the quenching oil onto the bottom |
| 5795406 |
Cementation method of metals |
August 18, 1998 |
| In a cementation method of metals in which hydrocarbon gas and oxidization gas are introduced into a heat treatment furnace, a small quantity of hydrocarbon gas of is introduced at a low pressure into the heat treatment furnace. The shift time and the gradient of the carbon potential var |
| 5762767 |
Automatic transferring and processing apparatus of cathode and method thereof |
June 9, 1998 |
| An automatic transferring and processing apparatus of a cathode and method thereof. A cathode having an electro-deposited metal is taken out of an electrolytic cell, rotated by a stock cathode pivot, transferred through a stock moving carriage and stock conveyor to a processor for proces |
| 5733116 |
Heat treatment apparatus |
March 31, 1998 |
| A heat treatment apparatus having a heat treatment furnace into which a hydrocarbon gas and an oxidization gas are introduced, wherein an outlet opening of a valve through which a pusher for pushing a work to be heat treated in the heat treatment furnace is movable is hermetically connec |
| 5676769 |
Gas carburizing process and an apparatus therefor |
October 14, 1997 |
| A treating material W pre-heated to a carburizing temperature of 750.degree.-950.degree. C. is heat-treated in a carburizing atmosphere directly supplied with hydrocarbon and oxidizing gases and heated to 1000.degree.-1100.degree. C. Then, the treating material W is forcibly cooled t |
| 5652042 |
Conductive paste compound for via hole filling, printed circuit board which uses the conductive |
July 29, 1997 |
| A conductive paste compound for via hole filling includes a conductive filler at 80 to 92 weight percent with an average particle size of from 0.5 to 20 .mu.m and specific surface of from 0.1 to 1.5 m.sup.2 /g, a liquid epoxy resin at 4.5 to 20 weight percent containing 2 or more epoxy |
| 5630554 |
Method of separating and recovering valuable metals and non-metals from composite materials |
May 20, 1997 |
| To insure that rejects or scraps of composite materials such as printed wiring boards that consist of the mixture of metal and non-metal parts are separated into the metal and non-metal components with good precision so that both components can be recovered as recyclable valuables, the |
| 5591535 |
Ferromagnetic metal powder |
January 7, 1997 |
| There is provided an accicular ferromagnetic metal powder with which one can produce magnetic media for high-density recording that are improved in storage stability and magnetic characteristics.The improved ferromagnetic metal powder essentially consists of iron and 50 atm % based on th |
