Class 148/314 - Manganese base

Subclass of Class 148 - Metal treatment
Definition: Stock material which contains over 50 percent manganese.
No. of patents: 24
Last issue date: 08/07/2001

Number	Title	Issue Date
6270593	Mn alloy materials for magnetic materials, Mn alloy sputtering targets, and magnetic thin films Mn alloy materials for magnetic materials contain 500 ppm or less, preferably 100 ppm or less, oxygen, 100 ppm or less, probably 20 ppm or less, sulfur, and preferably a total of 1000 ppm or less, more preferably 500 ppm or less, impurities (elements othe...	08/07/2001
6165607	Sputtering target and antiferromagnetic film and magneto-resistance effect element formed by using the same A sputtering target consisting essentially of Mn and at least one kind of R element selected from a group of Ni, Pd, Pt, Co, Rh, Ir, V, Nb, Ta, Cu, Ag, Au, Ru, Os, Cr, Mo, W, and Re. The sputtering target, at least as a part of target texture, comprises o...	12/26/2000
6143096	Process for producing alloy, alloy and alloy containing sheets made therefrom A powdery alloy mainly composed of Mn--Bi having particle diameter of 5 μm or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation magnetization, wherein the size of crystallite according to Scheler...	11/07/2000
5648160	Magnetic powder, method for producing the same and use of the same A magnetic powder containing MnBi, in which an average particle size of the magnetic powder is from 0.1 μm to 20 μm; a coercive force is from 3000 to 15,000 Oe at 300 K. and 50 to 1000 Oe at 80 K. when measured with applying a magnetic field of 16 KOe; ...	07/15/1997
5114669	Ferromagnetic materials A ferromagnetic material having the formula MGa2-x Asx where 0.15ࣘxࣘ0.99 and M represents one of Fe3, Fe3 partially substituted by manganese or Fe3 partially substituted by cobalt....	05/19/1992
5049209	Magnetic nitride film The disclosed magnetic nitride T-M-N film (T is at least one metal selected from the group consisting of Fe, Co, Ni and Mn; M is at least one metal selected from the group consisting of Nb, Zr, Ti, Ta, Hf, Cr, W and Mo; N is nitrogen (N)) has excellent we...	09/17/1991
4929275	Magnetic alloy compositions and permanent magnets This invention relates to novel permanent magnet alloy compositions and high energy permanent magnets comprising from about 0.5 to about 27 atomic percent R wherein R is at least one rare earth element including Y and Sc, from about 0.1 to about 53 atomic...	05/29/1990
4836865	Magnetic nitride film The disclosed magnetic nitride T-M-N film (T is at least one metal selected from the group consisting of Fe, Co, Ni and Mn; M is at least one metal selected from the group consisting of Nb, Zr, Ti, Ta, Hf, Cr, W and Mo; N is nitrogen (N)) has excellent we...	06/06/1989
4784703	Directional solidification and densification of permanent magnets having single domain size MnBi particles Directional solidification of Bi and Mn compositions to produce magnetic single domain size MnBi particles with aligned morphologies followed by post heat treating and densification....	11/15/1988
4778541	Directional solidification and densification of permanent magnets having single domain Directional solidification of Bi and Mn compositions to produce magnetic single domain size MnBi particles with aligned morphologies....	10/18/1988
4648915	Permanent Mn-Al-C alloy magnets A billet made of a polycrystalline Mn-Al-C alloy magnet which is obtained by plastically deforming a Mn-Al-C alloy for magnet such as by extrusion at a temperature of 530° to 830° C. is used for compressive working. When the billet is hollow, it is enti...	03/10/1987
4623404	Method for making permanent magnets of Mn-Al-C alloys Anisotropic Mn-Al-C alloy magnets exhibiting excellent magnetic characteristics in multipolar magnetization are described. The magnets are obtained by subjecting a polycrystalline Mn-Al-C alloy magnet, which is rendered anisotropic, to compressive working...	11/18/1986
4579607	Permanent Mn-Al-C alloy magnets and method for making same A billet made of a polycrystalline Mn-Al-C alloy magnet which is obtained by plastically deforming a Mn-Al-C alloy for magnet such as by extrusion at a temperature of 530° to 830° C. is used for compressive working. When the billet is hollow, it is enti...	04/01/1986
4443276	Mn--Al--C Alloys for anisotropic permanent magnets A permanent magnetic alloy characterized in that phosphorus of 0.6% or less by weight is added with respect to an Mn--Al--C alloy of 100% by weight comprising manganese of 68.0% to 73.0% by weight, carbon of (1/10)Mn--6.6)% to (1/3Mn--22.2)% by weight, an...	04/17/1984
4404046	Method of making permanent magnet of Mn-Al-C alloy There is provided a method of producing a manganese-aluminum-carbon alloy magnet, including the steps of preparing a polycrystalline Mn-Al-C alloy magnet having a specified direction of easy magnetization and subjecting the magnet to compressive working i...	09/13/1983
4342608	Mn-Al Permanent magnets and their manufacture Permanent magnet materials such as Al-Ni-Co-Fe, Mo-Co-Fe, and Co-Cr-Fe alloys comprise cobalt which has become increasingly expensive. Mn-Al is a cobalt-free magnet alloy which, according to the invention, is used to produce isotropic magnets having a max...	08/03/1982
4312684	Selective magnetization of manganese-aluminum alloys A portion of a nonmagnetic body of manganese-aluminum based alloy is tempered in situ to a state of high magnetic coercivity. The magnetically coercive portion may be used, e.g., to store magnetically readable information or to provide a tailored permanen...	01/26/1982
4273595	Method of preparing thermomagnetically treated magnetically anisotropic objects A spinodal decomposition-type alloy is thermomagnetically treated for a specific time period at a temperature determined by calculating the spinodal curves of the alloy....	06/16/1981
4133703	Permanent magnetic Mn-Al-C alloy A permanent magnetic alloy which is obtained by adding copper in amount of 0.5 to 6.2 wt% to the conventional Mn-Al-C alloy comprising 68.0 to 73.0 wt% of manganese, (1/10 Mn -- 6.6) to (1/3 Mn -- 22.2) wt% of carbon and the remainder aluminum and subject...	01/09/1979
4063970	Method of making permanent magnets Method of making an anisotropic permanent magnetic body which has a (B.H)max of at least 1.4 × 106 Gauss . Oersted and a remanence of at least 2500 Gauss, utilizes magnetic powder particles having a coercivity J HC	12/20/1977
4042429	Magnetic alloys having wasp-waisted magnetic hysteresis loop Magnetic alloys consisting of 68.0~73.0 weight % manganese, (1/10 Mn - 6.6)~(1/3 Mn - 22.2) weight % carbon, the balance aluminum, which show wasp-waisted magnetic hysteresis loops with the ratio of the residual magnetization 4πIr to the inten...	08/16/1977
4023991	Anisotropic permanent magnet of Mn-Al-C alloy An anisotropic permanent magnet of an Mn-Al-C alloy containing 68.0% to 73.0% by weight of manganese, (1/10Mn-6.6)% to (1/3Mn-22.2)% by weight of carbon, and the remainder aluminum, which alloy is rendered anisotropic by deforming it plastically at a temp...	05/17/1977
3976519	Machinable anisotropic permanent magnets of Mn-Al-C alloys An anisotropic permanent magnet of an Mn-Al-C alloy containing 68.0% to 73.0% by weight of manganese, (1/10 Mn-6.6)% to (1/3 Mn-22.2)% by weight of carbon, and the remainder aluminum, which alloy is rendered anisotropic by deforming it plastically at a te...	08/24/1976
3944445	Method of making permanent magnets of Mn-Al-C alloy A method of making isotropic Mn-Al-C alloy magnets which comprises the step of subjecting an alloy comprising 71.0% to 73.0% by weight of manganese, (1/10 Mn -- 6.6)% to (1/3 Mn -- 22.2)% by weight of carbon and the remainder aluminum to plastic deformati...	03/16/1976

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Class 148/314 - Manganese base