U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 75/342 - Spheroidizing or rounding of existing solid metal particles


Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process in which solid, irregular, or nonspherical particulate
No. of patents: 63
Last issue date: 11/03/2009


1    
NumberTitleIssue Date
7611562Triangular nanoframes and method of making same
The present invention provides nanoprisms etched to generate triangular framework structures. These triangular nanoframes possess no strong surface plasmon bands in the ultraviolet or visible regions of the optical spectrum. By adding a mild reducing agent, metal io...
11/03/2009
7250729Method of spark-processing silicon and resulting materials
The subject invention pertains to a method of spark processing silicon and resulting materials. The subject invention also relates to electroluminescent devices incorporating the materials produced by the subject method. The subject method for spark-processing can e...
07/31/2007
7229485Plasma reduction processing of materials
In a process for the reduction of a metalliferous ore or concentrate the ore or concentrate is first prepared into a particulate form. A reaction chamber (3, 103, 203, 301, 401, 503, 603, 702) is then charged with ore or concentrate, a reductant and an input ...
06/12/2007
7156893Method of making niobium and other metal powders
Methods of forming niobium powders and other metal powders are described. The method involves milling the metal powders at elevated temperatures and in the presence of at least one liquid solvent. The methods of the present invention have the ability to reduce DC le...
01/02/2007
7141110Erosion resistant coatings and methods thereof
Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr)...
11/28/2006
7097686Nickel powders, methods for producing powders and devices fabricated from same
Nickel powder batches and methods for producing nickel powder batches. The powder batches include particles having a small particle size, narrow size distribution and a spherical morphology. The present invention is also directed to devices incorporating the nickel ...
08/29/2006
7081267Nanostructured powders and related nanotechnology
Methods to manufacture nanoscale particles comprising metals, alloys, intermetallics, ceramics are disclosed. The thermal energy is provided by plasma, internal energy, heat of reaction, microwave, electromagnetic, direct electric arc, pulsed electric arc and/or nuc...
07/25/2006
7037463Method for producing a titanium-base alloy having an oxide dispersion therein
A metallic article is prepared by first furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively containing the constituent elements of the metallic article in their respective constituent-element propor...
05/02/2006
6955745Method of spark-processing silicon and resulting materials
The subject invention pertains to a method of spark processing silicon and resulting materials. The subject invention also relates to electroluminescent devices incorporating the materials produced by the subject method. The subject method for spark-processing can e...
10/18/2005
6923842Method and apparatus for producing fine particles, and fine particles
A method and apparatus are invented for producing fine particles, which can readily realize the formation of fine particles of sub-μm order to 100 micron order as well as fine particles of several micrometer which cannot be realized by a conventional method and app...
08/02/2005
6911618Method of producing minute metal balls
An object of the present invention is to provide a producing method by which minute metal balls having a high sphericity or roundness and a uniform diameter. The present invention provides a method of producing minute metal balls, comprising the steps of cutt...
06/28/2005
6780219Method of spheridizing silicon metal powders
A method for spheridizing silicon metal particles is described. The method involves injecting irregular silicon metal particles into a high-temperature plasma reactor to melt at least 50 weight percent of the particles. The molten droplets are solidified to form sub...
08/24/2004
6706324Method of forming nano-crystalline structures and product formed thereof
A product in which at least a portion of the product has a nanocrystalline microstructure, and a method of forming the product. The method generally entails machining a body in a manner that produces chips consisting entirely of nano-crystals as a result of the mach...
03/16/2004
6689192Method for producing metallic nanoparticles
Method for producing metallic nanoparticles. The method includes generating an aerosol of solid metallic microparticles, generating non-oxidizing plasma with a plasma hot zone at a temperature sufficiently high to vaporize the microparticles into metal va...
02/10/2004
6663688Sintered material of spheroidal sintered particles and process for producing thereof
The invention relates to sintered particles for use in wear applications and to a process for producing the sintered particles. The particles are of substantially spheroidal shape, have a grain size of 20 to 180 μm and have a predominantly closed porosit...
12/16/2003
6221125Water-atomized spherical metal powders and method for producing the same
A water-atomized metal powder having a spherical particle shape, an average particle size of 25 μm or less and a tap density ratio of 50-60%. The spherical powder is produced by forming non-spherical metal particles, which have been produced from molten ...
04/24/2001
5850047Production of copper powder
A method of producing copper powder having little variation in its particle size and an excellent monodispersion properties. A copper complex ion solution is prepared from a copper-containing solution and a complexing agent, then a reducing agent is added...
12/15/1998
5761779Method of producing fine metal spheres of uniform size
A method of producing soft fine metal spheres for semiconductor packaging from a material selected from soft metals and soft alloys. A plurality of fine wires made of the material are arranged in parallel on a flat base plate. Each of the wires has a diam...
06/09/1998
5756162Method for manufacturing sendust core powder
A method for manufacturing a powder for sendust core is disclosed which is used in power supplies, converters and invertors, and in which the sendust powder is manufactured by applying the atomizing process, and the powder is coated with a special ceramic...
05/26/1998
5653783Method of producing fine metal balls
A method for efficiently and accurately manufacturing fine metal balls such as solder is provided. A liquid is poured into a vertically elongated cylindrical container, where the liquid is heated up to a temperature higher than the melting point of the me...
08/05/1997
5616164Methods for making metal particle spherical and removing oxide film solder paste and soldering method
Metal such as solder is immersed in a heating medium containing a rosin or derivative thereof and an organic solvent and heated to a temperature above the melting point of the metal, to remove the oxide film of the metal and make the metal spherical. If a...
04/01/1997
5516481System for containerless processing of materials under a state of compensate-gravity
A pressure medium composed of plural kinds of fluids each of which have a different density is charged in a pressure chamber forming, for example, fluid layers. A material is suspended by way of buoyancy brought by this pressure medium. By properly contro...
05/14/1996
5445666Method for producing small metal balls approximately equal in diameter
In order to develop a method for producing at least approximately ball-shaped metallic particles at least almost equal in diameter such that a greater yield of particles at least almost equal in diameter is achieved than in known methods, it is suggested ...
08/29/1995
5261942Tantalum powder and method of making same
An improved flaked tantalum powder and process for making the flaked powder are disclosed. The powder is characterized by having a Scott density greater than about 18 g/in3 and preferably at least about 90% of the flake particles having no dime...
11/16/1993
5183493Method for manufacturing spherical particles out of liquid phase
To manufacture spherical particles out of liquid phase with a narrow grain spectrum using melting temperatures of up to 1500° C. by generating droplets by means of vibrating nozzles, the liquid phase, the nozzle and the drop distance for the droplets are...
02/02/1993
5143534Heat processing of particulate material with a quenching gas which swirls around the processing zone
The invention relates to a method of heat processing particles of glass. A first current of a mixture of a combustible gas and a gas capable of oxidizing the combustible gas is introduced into a substantially cylindrical chamber from its lower end. The co...
09/01/1992
5124091Process for producing fine powders by hot substrate microatomization
A process for producing fine powder, which includes entraining a starting powder material in a carrier gas, injecting the starting powder material using the carrier gas into a high temperature jet to form a high velocity stream of molten droplets, fragmen...
06/23/1992
5102452Method for the treatment and production of free-flowing WC-Ni-Co powders
The invention relates to a method for the treatment and production of material, particularly for the treatment and production of free flowing, finely divided metal powder or metal matrix composite powder. The material is composed of tungsten carbide and a...
04/07/1992
5070591Method for clad-coating refractory and transition metals and ceramic particles
Metal and ceramic particles of various morphologies are clad with a coating from the transition metal group consisting of silver, gold, copper, nickel, iron, cobalt, aluminum etc., or combinations thereof, to provide improved coated particles for microele...
12/10/1991
5055240Method and apparatus for producing microshells
A method is described for forming hollow particles, or shells, of extremely small size. The shell material is heated to a molten temperature in the presence of a gas that is at least moderately soluble in the shell material, to form a solution of the molt...
10/08/1991
4944797Low oxygen content fine spherical copper particles and process for producing same by fluid energy milling and high temperature processing
A powder material and a process for producing same are disclosed. The process comprises reducing the size of an electrolytically produced starting dendritic copper powder material by fluid energy milling to produce a finer powder, essentially all of which...
07/31/1990
4859237Hydrometallurgical process for producing spherical maraging steel powders with readily oxidizable alloying elements
A process for producing a blend of maraging steel alloys and an oxidizable metal comprises forming an aqueous solution or iron, cobalt, nickel and molybdenum in a predetermined ratio. Thereafter, a reducible solid material containing the metals is produce...
08/22/1989
4842654Method of heat treatment of low melting-point metal on an electrode of a chip part
Disclosed is a method of heat treatment of a low melting-point metal for production of spheroidal bodies formed of a low melting-point metal or alloy or heat treatment of the low-melting point metal coated on the surface of an electrode of a chip part. Th...
06/27/1989
4816067Process for producing fine spherical particles
A process is disclosed for producing fine spherical particles from a fine powder feed material which comprises entraining the powder feed material in a carrier gas, introducing the feed material and carrier gas through a powder port into a high temperatur...
03/28/1989
4808217Process for producing fine spherical particles having a low oxygen content
A process is disclosed for producing fine spherical particles from a starting fine powder material which comprises entraining the powder material in a carrier gas, passing the powder material and the carrier gas through a high temperature zone, and mainta...
02/28/1989
4802915Process for producing finely divided spherical metal powders containing an iron group metal and a readily oxidizable metal
Alloys of a first group of metals containing at least one iron group metal and one or more easily oxidizable metals can be formed by forming an aqueous solution of the first group of metals, forming solids containing the metals from the solution, reducing...
02/07/1989
4793969Process for producing tungsten heavy alloy sheet using high temperature processing techniques
A process is disclosed for producing a sheet of tungsten heavy alloy which comprises forming metal particles of the alloy wherein each metal particle is a uniform admixture of the alloy components, entraining the particles in a carrier gas, passing the pa...
12/27/1988
4787934Hydrometallurgical process for producing spherical maraging steel powders utilizing spherical powder and elemental oxidizable species
A process for forming maraging steel alloys comprise forming an aqueous solution containing the metal values of iron, cobalt, nickel and molybdenum in a predetermined ratio, forming the reducible solid material from the solution, reducing the solid materi...
11/29/1988
4783215Low oxygen content iron group based and chromium based fine spherical particles and process for producing same by fluid energy milling and temperature processing
A powder material and a process for producing the material are disclosed. The powder material consists essentially of iron group based and chromium based spherical particles. The material is essentially free of elliptical shaped material and elongated par...
11/08/1988
4783218Process for producing spherical refractory metal based powder particles
A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of refractory metal based spherical particles and is essentially free of elliptical shaped material and elongated particles having round...
11/08/1988
1    
 
Sign InRegister
Username  
Password   
forgot password?