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Class Information
Number: 75/610
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > At 300 degrees c or greater (e.g., pyrometallurgy, etc.) > Nonferrous > Rare earth metal, singly or in combination
Description: Process in which a Rare earth metal (i.e., Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu)) is produced or a metal that contains over 50 percent by weight Rare earth metal, singly or in combination, is treated.










Patents under this class:

Patent Number Title Of Patent Date Issued
8551396 Hydrogen storage material with intermediate bond strength and process for making the same Oct. 8, 2013
8282703 Rare earth recovery from phosphor material and associated method Oct. 9, 2012
7279036 Process for preparation of inorganic colorants from mixed rare earth compounds Oct. 9, 2007
6960240 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet Nov. 1, 2005
6669755 Apparatus and method for treating containerized feed materials in a liquid reactant metal Dec. 30, 2003
6309441 Reduction-melting process to form rare earth-transition metal alloys and the alloys Oct. 30, 2001
5972074 Method for reducing impurities in misch metal and alloys Oct. 26, 1999
5389123 Method for continuously recovering metals using a dual zone chemical reactor Feb. 14, 1995
5314526 Metallothermic reduction of rare earth fluorides May. 24, 1994
5174811 Method for treating rare earth-transition metal scrap Dec. 29, 1992
5087291 Rare earth-transition metal scrap treatment method Feb. 11, 1992
4992096 Metallothermic reduction or rare earth metals Feb. 12, 1991
4767455 Process for the preparation of pure alloys based on rare earths and transition metals by metallothermy Aug. 30, 1988
4725312 Production of metals by metallothermia Feb. 16, 1988
4695427 Method for production of lanthanide-containing alloy Sep. 22, 1987
4680055 Metallothermic reduction of rare earth chlorides Jul. 14, 1987
4609402 Method of forming magnetostrictive rods from rare earth-iron alloys Sep. 2, 1986
4578242 Metallothermic reduction of rare earth oxides Mar. 25, 1986
4439232 Samarium metal production Mar. 27, 1984
4243411 Reduction of metal sulfides Jan. 6, 1981
4047982 Permanent magnet and process for producing the same Sep. 13, 1977











 
 
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