Patents by Inventor Akihiro Harada

Akihiro Harada 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: 20210323064
    Abstract: A metal powder producing apparatus comprising a melted metal supplying part discharging a melted metal, a cylinder body provided below the melted metal supplying part, and a cooling liquid layer forming part forming a flow of a cooling liquid for cooling the melted metal discharged from the melted metal supplying part along an inner circumference face of the cylinder body, wherein the cooling liquid layer forming part has a primary pressure reservoir, and the primary pressure reservoir is provided on an outer circumference part of the cylinder body.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: TDK CORPORATION
    Inventors: Kenji HORINO, Kazuhiro YOSHIDOME, Akihiro HARADA, Hiroyuki MATSUMOTO
  • Patent number: 11084094
    Abstract: A metal powder producing apparatus comprising a melted metal supplying part discharging a melted metal, a cylinder body provided below the melted metal supplying part, and a cooling liquid layer forming part forming a flow of a cooling liquid for cooling the melted metal discharged from the melted metal supplying part along an inner circumference face of the cylinder body, wherein the cooling liquid layer forming part has a primary pressure reservoir, and the primary pressure reservoir is provided on an outer circumference part of the cylinder body.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: August 10, 2021
    Assignee: TDK CORPORATION
    Inventors: Kenji Horino, Kazuhiro Yoshidome, Akihiro Harada, Hiroyuki Matsumoto
  • Patent number: 10991495
    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: Grant
    Filed: December 17, 2018
    Date of Patent: April 27, 2021
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Akito Hasegawa, Hajime Amano, Kensuke Ara, Akihiro Harada
  • Publication number: 20210116047
    Abstract: Provided is a fluid control device that can have a small size, while a member for detecting abnormality of the fluid control device is incorporated. In addition, a result of detecting an abnormality of the fluid control device is made easily recognizable from the outside. A fluid control device 1 includes an information processing module 5 provided in the device, a valve body 11 having a flow path, an actuator body 12 fixed to the valve body 11, a hollow casing 13 that is fixed to the actuator body 12 and has a side surface on which a through hole 133d is formed, a piston 126 that is provided in the actuator body 12 and in which a driving pressure introduction path 126b that communicates with a driving pressure introduction chamber S2 is formed, and an introduction pipe 21 through which driving pressure is introduced, the introduction pipe having one end inserted to the driving pressure introduction path 126b and another end leading to an outside through the through hole 133d of the casing 13.
    Type: Application
    Filed: March 13, 2018
    Publication date: April 22, 2021
    Applicant: Fujikin Incorporated
    Inventors: Yuya Suzuki, Katsunori Komehana, Masahiko Ochiishi, Akihiro Harada, Ryutaro Tanno, Tsutomu Shinohara
  • Publication number: 20210062308
    Abstract: 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: Application
    Filed: May 17, 2018
    Publication date: March 4, 2021
    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
  • Patent number: 10923258
    Abstract: A dust core excellent in DC superimposition characteristics and low in eddy current loss at a high frequency band of several MHz, and an inductor element using the dust core. A dust core contains large and small particles of insulated soft magnetic material powder, wherein the large and small particles have a saturation magnetic flux density of 1.4 T or more, and wherein in the soft magnetic material powder observed in a cross section of the dust core, a ratio of an area occupied by large particles to an area occupied by small particles in the cross section is 9:1 to 5:5, when a group of particles having particle size of 3 ?m or more and 15 ?m or less is defined as the large particles, and group of particles having a particle size of 300 nm or more and 900 nm or less is defined as the small particles.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: February 16, 2021
    Assignee: TDK CORPORATION
    Inventors: Hideharu Moro, Akihiro Harada, Yu Yonezawa
  • 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: 20210018103
    Abstract: A diaphragm valve configured to allow for adjustment of a Cv value during assembly of the diaphragm valve is provided. A valve body, a diaphragm, an actuator, a bonnet, a stem, and a diaphragm holder are provided, the bonnet includes a through hole coaxial with the stem and formed with a female thread, the cylindrical body formed with a male thread on an outer surface is screwed into the through hole in engagement with the female thread, the stem is inserted into the cylindrical body, a diaphragm side end surface of the cylindrical body protrudes from an opening surface of the through hole on the diaphragm side toward a diaphragm, a stem side end surface of the diaphragm holder comes into abutment with the diaphragm side end surface of the cylindrical body, so that a position of the abutted surfaces in an axial direction of the stem is adjusted by a degree of adjustment between the male thread and the female thread.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 21, 2021
    Applicant: FUJIKIN INCORPORATED
    Inventors: Tadayuki Yakushijin, Keisuke Ishibashi, Michio Yamaji, Akihiro Harada
  • Publication number: 20200393060
    Abstract: To enable accurate and simple diagnosis of an operation abnormality of a valve. A valve V1 capable of detecting an operation abnormality has a magnet M1 that is attached in the vicinity of a pressing adapter 52 of a stem 53 that slides according to an opening/closing operation of the valve V1, and a magnetic sensor M2 that is attached to a surface acing the stem 53, inside the pressing adapter 52 that presses a peripheral edge of a diaphragm 51, and detects a change in a distance between the magnet M1 and the magnetic sensor M2. Further, an abnormality determination mechanism compares the change in the distance between the magnet M1 and the magnetic sensor M2 at the time of abnormality diagnosis detected by the magnetic sensor M2 and a previously measured change in the distance between the magnet M and the magnetic sensor M2 at the time of normality, and determines whether or not there is an abnormality.
    Type: Application
    Filed: October 5, 2018
    Publication date: December 17, 2020
    Applicant: Fujikin Incorporated
    Inventors: Ryutaro Tanno, Kenji Aikawa, Akihiro Harada, Yuya Suzuki, Takahiro Matsuda, Katsunori Komehana, Masahiko Ochiishi, Tsutomu Shinohara
  • 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
  • Patent number: 10854376
    Abstract: A coil component includes a coil and a composite magnetic material containing magnetic particles. The magnetic particles have an average minor-axis length of more than 5.0 nm and 50 nm or less and an average aspect ratio of 2.0 or more and 10.0 or less. The magnetic particles are orientated substantially perpendicularly to a central axis of the coil and are orientated randomly within a perpendicular plane to the central axis of the coil. The composite magnetic material has a saturation magnetization ?s of 80.0 emu/g or more.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Akihiro Harada, Yoshihiro Shinkai, Kyohei Takahashi, Tomoya Hanai
  • Patent number: 10847292
    Abstract: A soft magnetic alloy is composed of a Fe-based nanocrystal and an amorphous phase. In the soft magnetic alloy, S2-S1>0 is satisfied, where S1 (at %) denotes an average content rate of Si in the Fe-based nanocrystal and S2 (at %) denotes an average content rate of Si in the amorphous phase. In addition, the soft magnetic alloy has a composition formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e+f))MaBbSicPdCreCuf)1?gCg. 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 Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, S and a rare earth element, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, V and W. In the composition formula, a to g, ? and ? are in specific ranges.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 24, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Akito Hasegawa, Hiroyuki Matsumoto, Kenji Horino, Akihiro Harada, Syota Goto, Isao Nakahata
  • Publication number: 20200363826
    Abstract: To diagnose an abnormality of a fluid control device from an operation of an entire fluid supply line including a plurality of fluid control devices. Provided is an abnormality diagnosis method of a fluid supply line including a plurality of fluid control devices F, V1, and V2 communicating with each other fluid-tightly.
    Type: Application
    Filed: October 5, 2018
    Publication date: November 19, 2020
    Applicant: Fujikin Incorporated
    Inventors: Ryutaro Tanno, Kenji Aikawa, Akihiro Harada, Yuya Suzuki, Takahiro Matsuda, Katsunori Komehana, Masahiko Ochiishi, Tsutomu Shinohara
  • Publication number: 20200357546
    Abstract: A soft magnetic alloy or the like combines high saturated magnetic flux density, low coercive force and high magnetic permeability ??. A soft magnetic alloy having the composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))BaSibCcCudMe. X1 is one or more elements selected from the group consisting of Co and Ni, X2 is one or more elements selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O and rare earth elements, and M is one or more elements selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, ?? and V. 0.090?a?0.240, 0.
    Type: Application
    Filed: August 21, 2018
    Publication date: November 12, 2020
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Akito HASEGAWA, Kazuhiro YOSHIDOME, Kenji HORINO, Hiroyuki MATSUMOTO
  • Publication number: 20200357547
    Abstract: A soft magnetic alloy or the like combining high saturated magnetic flux density, low coercive force and high magnetic permeability ?? having the composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))BaSibCcCudMe. X1 is one more elements selected from the group consisting of Co and Ni, X2 is one or more elements selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O and rare earth elements, and M is one or more elements selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W and V. 0.140<a?0.240, 0?b?0.030, 0<c<0.080, 0<d?0.020, 0?e?0.030, ??0, ??0, and 0??+??0.50 are satisfied.
    Type: Application
    Filed: August 21, 2018
    Publication date: November 12, 2020
    Applicant: TDK CORPORATION
    Inventors: Akihiro HARADA, Akito HASEGAWA, Kazuhiro YOSHIDOME, Kenji HORINO, Hiroyuki MATSUMOTO
  • Patent number: 10830367
    Abstract: A fluid flow path of a joining block includes a vertical flow path and a horizontal flow path. The joining block is constrained on a rail member so as to be capable of moving in a longitudinal direction. A fluid control device is supported by the rail member via the joining block and includes a screw hole, and a tightening bolt that has passed through a body of the fluid control device is screwed into the screw hole. A gasket between the joining block and the body is compressed between the body and the joining block by a tightening force of the tightening bolt. The screw hole includes the tip portion closed above the horizontal flow path and at least partially overlaps the horizontal flow path in a planar view.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 10, 2020
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kenji Aikawa, Tsutomu Shinohara, Hajime Nakagawa, Takahiro Matsuda, Akihiro Harada
  • Publication number: 20200303097
    Abstract: An R-T-B based permanent magnet wherein R is one or more rare earth elements, T is Fe and Co, and B is boron. The R-T-B based permanent magnet includes M, C and N, wherein M is two or more selected from Cu, Ga, Mn, Zr, and Al, and includes at least Cu and Ga. A total content of R is ?29.0 and ?33.5 mass %, Co content is ?0.10 and ?0.49 mass %, B content is ?0.80 and ?0.96 mass %, a total content of M is ?0.63 and ?4.00 mass %, Cu content is ?0.51 and ?0.97 mass %, Ga content is ?0.12 and ?1.07 mass %, C content is ?0.065 and ?0.200 mass %, N content is ?0.023 and ?0.323 mass %, and Fe is a substantial balance.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 24, 2020
    Applicant: TDK CORPORATION
    Inventors: Makoto IWASAKI, Akihiro HARADA
  • Publication number: 20200301401
    Abstract: A tool is equipped with a torque sensor, suited for a tightening task of a fastening component of a device such as a fluid control system that requires a large number of fastening components for assembly and has a narrow space for access to the fastening components, and capable of automatically detecting a tightening torque. The tool includes a torque sensor capable of detecting a tightening torque for tightening a fastening component acting on a bit. The torque sensor initiates measurement of the tightening torque when the tightening torque detected exceeds a set threshold value, completes measurement when the tightening torque detected falls below the set threshold value and a set time elapses, and outputs torque-related data formed on the basis of measurement data from measurement initiation to measurement completion and including a measurement time. The torque-related data includes a peak value of the measurement data.
    Type: Application
    Filed: December 3, 2018
    Publication date: September 24, 2020
    Applicants: CONNECTEC JAPAN Corporation, FUJIKIN INCORPORATED
    Inventors: Kazutoshi HORIKAWA, Toru NEBASHI, Hidekazu MACHIDA, Nozomi SHIMOISHIZAKA, Akihiro HARADA, Masahiko OCHIISHI, Yoshiaki YAMATO, Hiroki KARUBE, Mutsunori KOYOMOGI, Tsutomu SHINOHARA
  • Publication number: 20200285256
    Abstract: An entire fluid supply line constituted by a plurality of fluid control devices is precisely monitored. In addition, the control accuracy of the fluid supply line is improved by suppressing variations in operations of the fluid control devices. A fluid supply line L1 formed from a plurality of fluid control devices F1 and V11 to V14 communicating with each other in a fluid-tight manner includes: a first connection means that connects between a mechanism outside the fluid supply line L1 and a fluid control device on the fluid supply line L1 and F1; and a second connection means that branches from the first connection means on the fluid supply line L1 and is connected to other fluid control devices F1 and V11 to V14.
    Type: Application
    Filed: August 28, 2018
    Publication date: September 10, 2020
    Applicant: Fujikin Incorporated
    Inventors: Ryutaro Tanno, Kenji Aikawa, Akihiro Harada, Yuya Suzuki, Takahiro Matsuda, Katsunori Komehana, Masahiko Ochiishi, Tsutomu Shinohara
  • 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