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Class Information
Number: 420/83
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Rare earth metal containing
Description: Alloy or metallic composition which additionally contains one or more of scandium, yttrium or a lanthanide metal.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
6391450 Spindle-shaped goethite particles, spindle-shaped hematite particles, spindle-shaped magnetic iron-based alloy particles, and process for producing the same May. 21, 2002
6383662 Light weight steel and its use for car parts and facade linings May. 7, 2002
RE37666 Iron-based permanent magnets and their fabrication as well as iron-based permanent magnet alloy powders for permanent bonded magnets and iron-based bonded magnets Apr. 23, 2002
6334908 Sm-Fe-N alloy powder and process for the production thereof Jan. 1, 2002
6322637 Thin ribbon of rare earth-based permanent magnet alloy Nov. 27, 2001
6319335 Quenched thin ribbon of rare earth/iron/boron-based magnet alloy Nov. 20, 2001
6309479 Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main component Oct. 30, 2001
6309441 Reduction-melting process to form rare earth-transition metal alloys and the alloys Oct. 30, 2001
6302972 Nanocomposite magnet material and method for producing nanocomposite magnet Oct. 16, 2001
6296720 Rare earth/iron/boron-based permanent magnet alloy composition Oct. 2, 2001
6280536 Fe based hard magnetic alloy having super-cooled liquid region Aug. 28, 2001
6210496 High-strength high-workability cold rolled steel sheet having excellent impact resistance Apr. 3, 2001
6183868 Spindle-shaped goethite particles, spindle-shaped hematite particles and spindle-shaped magnetic iron based alloy particles Feb. 6, 2001
6183571 Permanent magnetic material and permanent magnet Feb. 6, 2001
6177045 Composition and method for inoculating low sulphur grey iron Jan. 23, 2001
6149862 Iron-silicon alloy and alloy product, exhibiting improved resistance to hydrogen embrittlement and method of making the same Nov. 21, 2000
6117389 Titanium killed steel sheet and method Sep. 12, 2000
6048412 Spindle-shaped goethite particles, spindle-shaped hematite particles and spindle-shaped magnetic iron based alloy particles Apr. 11, 2000
6039920 Process for making rhenium-containing alloys Mar. 21, 2000
6019859 Iron-based permanent magnets and their fabrication as well as iron-based permanent magnet alloy powders for permanent bonded magnets and iron-based bonded magnets Feb. 1, 2000
6004407 Hard magnetic materials and method of producing the same Dec. 21, 1999
5985049 Magnetostrictive composites Nov. 16, 1999
5976273 Hard magnetic material Nov. 2, 1999
5968289 Permanent magnetic material and bond magnet Oct. 19, 1999
5963774 Method for producing cast alloy and magnet Oct. 5, 1999
5942053 Composition for permanent magnet Aug. 24, 1999
5932513 Container packed with powder of hydrogen absorbing alloy Aug. 3, 1999
5908513 Cast alloy used for production of rare earth magnet and method for producing cast alloy and magnet Jun. 1, 1999
5866066 Age hardenable alloy with a unique combination of very high strength and good toughness Feb. 2, 1999
5858123 Rare earth permanent magnet and method for producing the same Jan. 12, 1999
5803992 Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making Sep. 8, 1998
5800728 Permanent magnetic material made of iron-rare earth metal alloy Sep. 1, 1998
5769969 Rare earth-iron-nitrogen magnet alloy Jun. 23, 1998
5750044 Magnet and bonded magnet May. 12, 1998
5743972 Heavy-wall structural steel and method Apr. 28, 1998
5730810 Non-oriented electromagnetic steel sheet with low iron loss after stress relief annealing, and core of motor or transformer Mar. 24, 1998
5690889 Production method for making rare earth compounds Nov. 25, 1997
5674327 Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet Oct. 7, 1997
5656100 Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet Aug. 12, 1997
5645651 Magnetic materials and permanent magnets Jul. 8, 1997
5643491 Rare earth magnetic powder, its fabrication method, and resin bonded magnet Jul. 1, 1997
5634987 Magnetic materials and method of making them Jun. 3, 1997
5626690 Low boron amorphous alloy having excellent soft magnetic characteristics May. 6, 1997
5597425 Rare earth cast alloy permanent magnets and methods of preparation Jan. 28, 1997
5591535 Ferromagnetic metal powder Jan. 7, 1997
5591276 Magnetic alloy with ultrafine crystal grains and method of producing same Jan. 7, 1997
5589009 RE-Fe-B magnets and manufacturing method for the same Dec. 31, 1996
5580399 Magnetic recording medium Dec. 3, 1996
5578266 Alloys suitable for hydrogen storage, method of producing the same and electrode using the same Nov. 26, 1996
5565043 Rare earth cast alloy permanent magnets and methods of preparation Oct. 15, 1996

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