Patents by Inventor Masakazu Hosono
Masakazu Hosono has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240071660Abstract: A soft magnetic alloy powder comprises a component having a compositional formula ((Fe(1?(?+?))Co?Ni?)(1??)X1?)(1?(a+b+c+d+e))BaPbSicCdCre in atomic ratio. X1 comprises at least one selected from specific elements. Values of a, b, c, d, e, ?, ?, and ? of the compositional formula satisfy specific ranges. The soft magnetic alloy powder comprises soft magnetic alloy particles including soft magnetic alloy particles having a particle size of (0.95×D90) or more and (1.05×D90) or less. An average Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.75 or more. A variance of Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.035 or less.Type: ApplicationFiled: August 30, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Akito HASEGAWA, Yoshiki KAJIURA, Masakazu HOSONO, Kazuhiro YOSHIDOME
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Publication number: 20240071663Abstract: A soft magnetic alloy powder comprises first particles to fifth particles, each having a particle size within a specific range. Among the first particles to the fifth particles, nth particles have an average particle size xn (?m), an average circularity yn, and a variance zn of circularity, where nth is any ordinal number from first to fifth. Points (xn, yn) (n=1 to 5) plotted in an xy plane define an approximate straight line having a slope “my” of ?0.0030 or more. Points (xn, zn) (n=1 to 5) plotted in an xz plane define an approximate straight line having a slope “mz” of 0.00050 or less.Type: ApplicationFiled: August 30, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Masakazu HOSONO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Yoshiki KAJIURA
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Patent number: 11894169Abstract: Disclosed is a soft magnetic powder including a main component represented by composition formula: (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaBbPcSidCeSf. X1 represents one or more selected from the group consisting of Co and Ni; X2 represents one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, and rare earth elements; and M represents one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, Ti, and V. The following relations are satisfied: 0?a?0.140; 0.020<b?0.200; 0<c?0.150; 0?d?0.060; 0?e?0.030; 0?f?0.010; ??0; ??0; and 0??+??0.50. An oxygen content ratio in the soft magnetic powder is from 300 ppm to 3,000 ppm as a mass ratio.Type: GrantFiled: May 16, 2019Date of Patent: February 6, 2024Assignee: TDK CORPORATIONInventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Masakazu Hosono, Yoshiki Kajiura
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Publication number: 20230095146Abstract: A metal powder producing apparatus includes a molten metal supply unit, a cylinder body, and a cooling liquid introduction unit. The molten metal supply unit discharges a molten metal. The cylinder body is capable of being formed with a layer of a cooling liquid for cooling the molten metal on an inner circumference surface of the cylinder body. The cooling liquid introduction unit supplies the cooling liquid to an upper inside of the cylinder body. The inner circumference surface of the upper inside of the cylinder body has a substantially elliptical shape.Type: ApplicationFiled: September 14, 2022Publication date: March 30, 2023Applicant: TDK CORPORATIONInventors: Masakazu HOSONO, Kazuhiro YOSHIDOME, Yoshiki KAJIURA, Hiroyuki MATSUMOTO
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Patent number: 11495377Abstract: Provided is a soft magnetic alloy which has high saturation flux density and low coercivity and is represented by the compositional formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaPbSicCudX3eBf, wherein X1 is at least one element selected from the group consisting of Co and Ni, X2 is at least one element selected from the group consisting of Ti, V, Mn, Ag, Zn, Al, Sn, As, Sb, Bi, and rare earth elements, X3 is at least one element selected from the group consisting of C and Ge, and M is at least one element selected from the group consisting of Zr, Nb, Hf, Ta, Mo, and W, and wherein 0.030?a?0.120, 0.010?b?0.150, 0?c?0.050, 0?d?0.020, 0?e?0.100, 0?f?0.030, ??0, ??0, and 0??+??0.55.Type: GrantFiled: February 15, 2019Date of Patent: November 8, 2022Assignee: TDK CORPORATIONInventors: Hajime Amano, Akihiro Harada, Kenji Horino, Hiroyuki Matsumoto, Kazuhiro Yoshidome, Akito Hasegawa, Kensuke Ara, Masakazu Hosono
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Patent number: 11401590Abstract: Provided is a soft magnetic alloy having a composition of a compositional formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))PaCbSicCudMe. X1 is one or more selected from a group consisting of Co and Ni, X2 is one or more selected from a group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, 0, and rare earth elements, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W and V. 0.050?a?0.17, 0<b<0.050, 0.030<c?0.10, 0<d?0.020, 0?e?0.030, ??0, ??0, and 0??+??0.50.Type: GrantFiled: May 17, 2018Date of Patent: August 2, 2022Assignee: TDK CORPORATIONInventors: Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Seigo Tokoro, Masakazu Hosono, Takuma Nakano, Satoko Mori
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Patent number: 11158443Abstract: A soft magnetic alloy contains a main component having a composition formula of (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d))MaBbPcCd and auxiliary components including at least Ti, Mn and Al. In the composition formula, X1 is one or more selected from the group consisting of Co and Ni, X2 is one or more selected from the group consisting of Ag, Zn, Sn, As, Sb, Bi and a rare earth element, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W and V. In the composition formula, 0.030?a?0.100, 0.050?b?0.150, 0<c?0.030, 0<d?0.030, ??0, ??0, and 0??+??0.50 are satisfied. In the soft magnetic alloy, a content of Ti is 0.001 to 0.100 wt %, a content of Mn is 0.001 to 0.150 wt %, and a content of Al is 0.001 to 0.100 wt %.Type: GrantFiled: September 28, 2018Date of Patent: October 26, 2021Assignee: TDK CORPORATIONInventors: Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Seigo Tokoro, Masakazu Hosono, Takuma Nakano, Satoko Mori
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Patent number: 11145448Abstract: A soft magnetic alloy powder includes a plurality of soft magnetic alloy particles of a soft magnetic alloy represented by a composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe, wherein X1 represents Co and/or Ni; X2 represents at least one selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, ??0, ??0, and 0??+??0.50 are satisfied, and wherein the soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and the surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.Type: GrantFiled: March 8, 2019Date of Patent: October 12, 2021Assignee: TDK CORPORATIONInventors: Masakazu Hosono, Kenji Horino, Hiroyuki Matsumoto, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Isao Nakahata
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Patent number: 11081266Abstract: Soft magnetic alloy powder includes plurality of soft magnetic alloy particles of soft magnetic alloy represented by composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c++e+f+g))MaBbPcSidCeSfTig, wherein X1 represents Co and/or Ni; X2 represents at least one selected from group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, 0?f?0.010, 0?g?0.0010, ??0, ??0, and 0??+??0.50 are satisfied, wherein at least one of f and g is more than 0; and wherein soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from group consisting of P, Si, Bi, and Zn.Type: GrantFiled: March 8, 2019Date of Patent: August 3, 2021Assignee: TDK CORPORATIONInventors: Masakazu Hosono, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Isao Nakahata, Akito Hasegawa, Hajime Amano
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Publication number: 20210062308Abstract: Provided is a soft magnetic alloy having a composition of a compositional formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))PaCbSicCudMe. X1 is one or more selected from a group consisting of Co and Ni, X2 is one or more selected from a group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, 0, and rare earth elements, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W and V. 0.050?a?0.17, 0<b<0.050, 0.030<c?0.10, 0<d?0.020, 0?e?0.030, ??0, ??0, and 0??+??0.50.Type: ApplicationFiled: May 17, 2018Publication date: March 4, 2021Applicant: TDK CORPORATIONInventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO, Masakazu HOSONO, Takuma NAKANO, Satoko MORI
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Publication number: 20210020342Abstract: Provided is a soft magnetic alloy which has high saturation flux density and low coercivity and is represented by the compositional formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaPbSicCudX3eBf, wherein X1 is at least one element selected from the group consisting of Co and Ni, X2 is at least one element selected from the group consisting of Ti, V, Mn, Ag, Zn, Al, Sn, As, Sb, Bi, and rare earth elements, X3 is at least one element selected from the group consisting of C and Ge, and M is at least one element selected from the group consisting of Zr, Nb, Hf, Ta, Mo, and W, and wherein 0.030?a?0.120, 0.010?b?0.150, 0?c?0.050, 0?d?0.020, 0?e?0.100, 0?f?0.030, ??0, ??0, and 0??+??0.55.Type: ApplicationFiled: February 15, 2019Publication date: January 21, 2021Applicant: TDK CORPORATIONInventors: Hajime AMANO, Akihiro HARADA, Kenji HORINO, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Kensuke ARA, Masakazu HOSONO
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Publication number: 20200135369Abstract: A soft magnetic alloy powder includes a main component of (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaBbPcSidCeSf, in which X1 is one or more of Co and Ni, X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements, and M is one or more of Nb, Hf, Zr, Ta, Mo, W, Ti, and V. 0?a?0.160, 0.020?b?0.200, 0?c?0.150, 0?d?0.060, 0?e?0.030, 0.0010?f?0.030, 0.005?f/b?1.50, ??0, ??0, and 0??+??0.50 are satisfied.Type: ApplicationFiled: October 28, 2019Publication date: April 30, 2020Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Masakazu HOSONO, Yoshiki KAJIURA
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Publication number: 20190355498Abstract: Disclosed is a soft magnetic powder including a main component represented by composition formula: (Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e+f))MaBbPcSidCeSf. X1 represents one or more selected from the group consisting of Co and Ni; X2 represents one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, and rare earth elements; and M represents one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, Ti, and V. The following relations are satisfied: 0?a?0.140; 0.020<b?0.200; 0<c?0.150; 0?d?0.060; 0?e?0.030; 0?f?0.010; ??0; ??0; and 0??+??0.50. An oxygen content ratio in the soft magnetic powder is from 300 ppm to 3,000 ppm as a mass ratio.Type: ApplicationFiled: May 16, 2019Publication date: November 21, 2019Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Satoko MORI, Masakazu HOSONO, Yoshiki KAJIURA
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Publication number: 20190279796Abstract: Soft magnetic alloy powder includes plurality of soft magnetic alloy particles of soft magnetic alloy represented by composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c++e+f+g))MaBbPcSidCeSfTig, wherein X1 represents Co and/or Ni; X2 represents at least one selected from group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, 0?f?0.010, 0?g?0.0010, ??0, ??0, and 0??+??0.50 are satisfied, wherein at least one of f and g is more than 0; and wherein soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from group consisting of P, Si, Bi, and Zn.Type: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: TDK CORPORATIONInventors: Masakazu HOSONO, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Isao NAKAHATA, Akito HASEGAWA, Hajime AMANO
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Publication number: 20190279799Abstract: A soft magnetic alloy powder includes a plurality of soft magnetic alloy particles of a soft magnetic alloy represented by a composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe, wherein X represents Co and/or Ni; X2 represents at least one selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from the group consisting of Nb, Hf, Zr, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, ??0, ??0, and 0??+??0.50 are satisfied, and wherein the soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and the surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.Type: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: TDK CORPORATIONInventors: Masakazu HOSONO, Kenji HORINO, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Isao NAKAHATA
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Publication number: 20190237229Abstract: A soft magnetic alloy has a main component of Fe. The soft magnetic alloy contains P. A Fe-rich phase and a Fe-poor phase are contained. An average concentration of P in the Fe-poor phase is 1.5 times or larger than an average concentration of P in the soft magnetic alloy by number of atoms.Type: ApplicationFiled: January 29, 2019Publication date: August 1, 2019Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Syota GOTO, Masakazu HOSONO, Hajime AMANO, Isao NAKAHATA
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Publication number: 20190221341Abstract: A soft magnetic alloy includes a main component of (Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e+f+g))MaBbPcSidCeSfTig. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020?a?0.14 is satisfied. 0.020<b?0.20 is satisfied. 0?d?0.060 is satisfied. 0?f?0.010 is satisfied. 0?g?0.0010 is satisfied. ??0 is satisfied. ??0 is satisfied. 0??+??0.50 is satisfied. At least one or more off and g are larger than zero. c and e are within a predetermined range. The soft magnetic alloy has a nanohetero structure or a structure of Fe based nanocrystallines.Type: ApplicationFiled: December 28, 2018Publication date: July 18, 2019Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Kensuke ARA, Hajime AMANO, Masakazu HOSONO
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Publication number: 20190221342Abstract: A soft magnetic alloy includes a main component of (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020?a?0.14 is satisfied. 0.020<b?0.20 is satisfied. 0?d?0.060 is satisfied. ??0 is satisfied. ??0 is satisfied. 0??+??0.50 is satisfied. c and e are within a predetermined range. The soft magnetic alloy has a nanohetero structure or a structure of Fe based nanocrystallines.Type: ApplicationFiled: January 10, 2019Publication date: July 18, 2019Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Kensuke ARA, Hajime AMANO, Masakazu HOSONO
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Publication number: 20190108931Abstract: A soft magnetic alloy contains a main component having a composition formula of (Fe(1?(???))X1?X2?)1?(a+b+c+d))MaBbPcCd and auxiliary components including at least Ti, Mn and Al. In the composition formula, X1 is one or more selected from the group consisting of Co and Ni, X2 is one or more selected from the group consisting of Ag, Zn, Sn, As, Sb, Bi and a rare earth element, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W and V. In the composition formula, 0.030?a?0.100, 0.050?b?0.150, 0?c?0.030, 0?d?0.030, ??0, ??0, and 0??+??0.50 are satisfied. In the soft magnetic alloy, a content of Ti is 0.001 to 0.100 wt %, a content of Mn is 0.001 to 0.150 wt %, and a content of Al is 0.001 to 0.100 wt %.Type: ApplicationFiled: September 28, 2018Publication date: April 11, 2019Applicant: TDK CORPORATIONInventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO, Masakazu HOSONO, Takuma NAKANO, Satoko MORI
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Publication number: 20140370290Abstract: The present invention provides an iron nitride based magnetic powder which comprises the Fe16N2 phases and the Fe4N phases. The iron nitride based magnetic powder of the present invention is obtained by subjecting the iron oxide or the starting material to an reduction treatment and a nitriding treatment, wherein the starting material is obtained by covering the surfaces of the iron oxide particles by a Si-based compound as required. The iron nitride based magnetic powder consists of 70 at % or more and 95 at or less of the phases of Fe16N2. compound and 5 at % or more and 30 at % or less of the phases of Fe4N compound in terms of Fe as measured by the Mossbauer spectra.Type: ApplicationFiled: June 10, 2014Publication date: December 18, 2014Inventors: Hirotaka YOKOTA, Masakazu HOSONO, Kiyoyuki MASUSAWA