Patents by Inventor Hajime Amano

Hajime Amano 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).

  • Publication number: 20210020342
    Abstract: 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: Application
    Filed: February 15, 2019
    Publication date: January 21, 2021
    Applicant: TDK CORPORATION
    Inventors: Hajime AMANO, Akihiro HARADA, Kenji HORINO, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Kensuke ARA, Masakazu HOSONO
  • Publication number: 20200377982
    Abstract: Provided is a soft magnetic alloy which has high saturation flux density, low coercivity, and a high specific resistance, and is represented by the compositional formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaSibCucX3dBe, 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, 0.020?b?0.175, 0?c?0.020, 0?d?0.100, 0?e?0.030, ??0, ??0, and 0??+??0.55).
    Type: Application
    Filed: February 15, 2019
    Publication date: December 3, 2020
    Applicant: TDK CORPORATION
    Inventors: Hajime AMANO, Akihiro HARADA, Kazuhiro YOSHIDOME, Kenji HORINO, Hiroyuki MATSUMOTO, Kensuke ARA, Akito HASEGAWA, Seigo TOKORO
  • Publication number: 20200291507
    Abstract: Provided is a soft magnetic alloy comprising a composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaBbPcSidCeZnf. X1 denotes at least one selected from Co and Ni; X2 denotes at least one selected from Cu, Mg, Al, Mn, Ag, Sn, Bi, O, N, S, and rare earth elements; M denotes at least one selected from Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W; 0.080?b?0.150, 0?c?0.060, 0?d?0.060, 0?e?0.030, 0.0030?f?0.080, 0.0030?a+f?0.080, b+c?0.100, ??0, ??0, and 0??+??0.50 are satisfied; and the soft magnetic alloy has Fe-based nanocrystals with a bcc structure.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 17, 2020
    Applicant: TDK CORPORATION
    Inventors: Kensuke ARA, Hajime AMANO
  • Patent number: 10748688
    Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b+d+e))MaBbCrdCue)1?fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.030?a?0.14, 0.028?b?0.15, 0.005?d?0.020, 0<e?0.030, 0?f?0.040, ??0, ??0, and 0??+??0.50 are satisfied.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: August 18, 2020
    Assignee: TDK CORPORATION
    Inventors: Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Masahito Koeda, Seigo Tokoro
  • Patent number: 10535455
    Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1?(?+?))X1?X2?)(1?(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020?a?0.14, 0.020?b?0.20, 0?c?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10?C/S?10.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: January 14, 2020
    Assignee: TDK CORPORATION
    Inventors: Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Seigo Tokoro, Shota Otsuka
  • Publication number: 20190385770
    Abstract: A soft magnetic alloy includes a composition of (Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e+f+g))MaTibBcPdSieSfCg. 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+b?0.140, 0.001?b?0.140, 0.020<c?0.200, 0.010?d?0.150, 0?e?0.060, a?0, f?0, g?0, a+b+c+d+e+f+g<1, ??0, ??0, and 0??+??0.50 are satisfied. The soft magnetic alloy has a nanohetero structure or a structure of Fe-based nanocrystalline.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 19, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Hajime AMANO, Akito HASEGAWA
  • Publication number: 20190279796
    Abstract: 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: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: TDK CORPORATION
    Inventors: Masakazu HOSONO, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Isao NAKAHATA, Akito HASEGAWA, Hajime AMANO
  • Publication number: 20190279799
    Abstract: 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: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: TDK CORPORATION
    Inventors: Masakazu HOSONO, Kenji HORINO, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Isao NAKAHATA
  • Publication number: 20190237229
    Abstract: 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: Application
    Filed: January 29, 2019
    Publication date: August 1, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Syota GOTO, Masakazu HOSONO, Hajime AMANO, Isao NAKAHATA
  • Publication number: 20190221342
    Abstract: 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: Application
    Filed: January 10, 2019
    Publication date: July 18, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Kensuke ARA, Hajime AMANO, Masakazu HOSONO
  • Publication number: 20190221341
    Abstract: 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: Application
    Filed: December 28, 2018
    Publication date: July 18, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Kensuke ARA, Hajime AMANO, Masakazu HOSONO
  • Publication number: 20190214171
    Abstract: A soft magnetic alloy which includes nanocrystal parts and amorphous parts is provided. The nanocrystal parts include ?Fe(—Si) as a main component, and include at least one of elements selected from B, P, C, Ti, Zr, Hf, Nb, Ta, Mo, V, W, Cr, Al, Mn, Zn, and Cu as a sub-component. When a total content ratio of the sub-component in the nanocrystal parts is set as ? (at %), and a total content ratio of the sub-components of the nanocrystal parts included in the amorphous parts is set as ? (at %), 0.01?(?/?)?0.40, and a crystallinity degree is 5% or more and 70% or less.
    Type: Application
    Filed: December 17, 2018
    Publication date: July 11, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Akihiro HARADA
  • Publication number: 20190108931
    Abstract: 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: Application
    Filed: September 28, 2018
    Publication date: April 11, 2019
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO, Masakazu HOSONO, Takuma NAKANO, Satoko MORI
  • Publication number: 20180247745
    Abstract: Provided is a soft magnetic alloy including Fe, as a main component, and including C. the soft magnetic alloy includes an Fe composite network phase having Fe-rich grids connected in a continuous measurement range including 80000 grids, each of which size is 1 nm×1 nm×1 nm. An average of C content ratio of the Fe-poor grids having cumulative frequency of 90% or more from lower C content is 5.0 times or more to an average of C content ratio of the whole soft magnetic alloy.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Akito HASEGAWA, Yu YONEZAWA, Syota GOTO, Hajime AMANO
  • Publication number: 20180218810
    Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1?(?+?))X1?X2?)(1?(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020?a?0.14, 0.020?b?0.20, 0?c?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10?C/S?10.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 2, 2018
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO, Shota OTSUKA
  • Publication number: 20180218813
    Abstract: A soft magnetic alloy comprising a main component having a compositional formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b+c))MaBbCrc)1?dCd, and a sub component including P, S and Ti, wherein X1 is selected from the group Co and Ni, X2 is selected from the group Al, Mn, Ag, Zn, Sn, As, Sb, Bi and rare earth elements, “M” is selected from the group Nb, Hf, Zr, Ta, Mo, W and V, 0.030?a?0.14, 0.005?b?0.20, 0<c?0.040, 0?d?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when soft magnetic alloy is 100 wt %, P is 0.001 to 0.050 wt %, S is 0.001 to 0.050 wt %, and Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing P by S is P/S, then P/S satisfies 0.10?P/S?10.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 2, 2018
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO
  • Publication number: 20180218811
    Abstract: A soft magnetic alloy comprising a main component having a compositional formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b))MaBb)1?cCc, and a sub component including P, S and Ti, wherein X1 is selected from the group Co and Ni, X2 is selected from the group Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group Nb, Hf, Zr, Ta, Mo, W, and V, 0.030?a?0.14, 0.005?b?0.20, 0?c?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when magnetic alloy is 100 wt %, P is 0.001 to 0.050 wt %, S is 0.001 to 0.050 wt %, and Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing P by S is P/S, then P/S satisfies 0.10?P/S?10.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 2, 2018
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO
  • Publication number: 20180218812
    Abstract: A soft magnetic alloy including a compositional formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b+c+e))MaBbPcCue)1?fCf, wherein X1 is one or more selected from the group consisting Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements, “M” is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W, and V, 0.030<a?0.14, 0.028?b?0.20, 0?c?0.030, 0<e?0.030, 0<f?0.040, ??0, ??0, and 0??+??0.50 are satisfied.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 2, 2018
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Seigo TOKORO, Shota OTSUKA
  • Publication number: 20180122540
    Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e))MaBbPcCrdCue)1-fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.020?a?0.060, 0.020?b?0.060, 0?c?0.030, 0?d?0.050, 0?e?0.030, 0<f?0.040, ??0, ??0, and 0??+??0.50 are satisfied.
    Type: Application
    Filed: October 26, 2017
    Publication date: May 3, 2018
    Applicant: TDK CORPORATION
    Inventors: Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akihiro HARADA, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Masahito KOEDA, Seigo TOKORO
  • Publication number: 20180122542
    Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1-(?+?))X1?X2?)(1-(a+b+c+d+e))MaBbPcCrdCue)1-fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.030?a?0.14, 0.028?b?0.20, 0<c?0.014, 0<d?0.040, 0?e?0.030, 0?f?0.040, ??0, ??0, and 0??+??0.50 are satisfied.
    Type: Application
    Filed: October 26, 2017
    Publication date: May 3, 2018
    Applicant: TDK CORPORATION
    Inventors: Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Akihiro HARADA, Akito HASEGAWA, Hajime AMANO, Kensuke ARA, Masahito KOEDA, Seigo TOKORO