Patents by Inventor Masao Yano

Masao Yano 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: 20160074936
    Abstract: A method for producing a raw material powder of a permanent magnet, includes: preparing a material powder of a permanent magnet, measuring magnetic characteristics of the material powder, and judging the quality of the material powder as the raw material powder based on a preliminarily determined relation between magnetic characteristics and the structure of the material powder. A method for producing a permanent magnet includes integrating material powders judged as good in the step of judging the quality as raw material powders by the method for producing a raw material powder of a permanent magnet. A method for inspecting a permanent magnet material powder includes transmitting a magnetic field to a material powder of a permanent magnet, receiving the magnetic field from the material powder, and measuring a magnetic field difference between the transmitted magnetic field and the received magnetic field as magnetic characteristics of the material powder.
    Type: Application
    Filed: May 24, 2013
    Publication date: March 17, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu SAKUMA, Hidefumi KISHIMOTO, Mikiya NOZAKI, Masao YANO, Tetsuya SHOJI, Akira MANABE
  • Publication number: 20160071635
    Abstract: Provided is a magnetic compound represented by the formula (R(1-x)Zrx)a(Fe(1-y)Coy)bTcMdAe (wherein R represents one or more rare earth elements, T represents one or more elements selected from the group consisting of Ti, V, Mo, and W, M represents one or more elements selected from the group consisting of unavoidable impurity elements, Al, Cr, Cu, Ga, Ag, and Au, A represents one or more elements selected from the group consisting of N, C, H, and P, 0?x?0.5, 0?y?0.6, 4?a?20, b=100?a?c?d, 0<c<7, 0?d?1, and 1?e?18), in which a main phase of the magnetic compound includes a ThMn12 type crystal structure, and a volume percentage of an ?-(Fe,Co) phase is 20% or lower.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 10, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu SAKUMA, Akira KATO, Kota WASHIO, Hidefumi KISHIMOTO, Masao YANO, Akira MANABE, Masaaki ITO, Shunji SUZUKI, Kurima KOBAYASHI
  • Publication number: 20150357100
    Abstract: A nanocomposite magnet includes grains including a shell of a Re-TM-B phase and a core of a TM or TM-B phase. Re is a rare earth element, and TM is a transition metal.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Masao YANO, Tetsuya SHOJI, Akira MANABE, Noritsugu SAKUMA, Masaaki ITO
  • Patent number: 9190196
    Abstract: A rare earth magnet of the invention has a composition represented by the compositional formula RaHbFecCodBeMf, where: R is at least one rare earth element including Y; H is at least one heavy rare earth element from among Dy and Tb; M is at least one element from among Ga, Zn, Si, Al, Nb, Zr, Ni, Cu, Cr, Hf, Mo, P, C, Mg, and V; 13?a?20; 0?b?4; c=100?a?b?d?e?f; 0?d?30; 4?e?20; 0?f?3, and has a structure constituted by a main phase: a (RH)2(FeCo)14B phase, and a grain boundary phase: a (RH)(FeCo)4B4 phase and a RH phase, with a crystal grain size of the main phase of 10 nm to 200 nm.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: November 17, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu Sakuma, Tetsuya Shoji, Masao Yano
  • Publication number: 20150084622
    Abstract: The object of the present invention is to provide a method, system and apparatus that are capable of measuring magnetic characteristic of crystal grains composing magnetic polycrystalline materials in the magnetic field or nonmagnetic field by X-ray magnetic circular dichroism. In particular, the present invention is capable of measuring the magnetic characteristic of comparatively very thick materials.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 26, 2015
    Inventors: Masao YANO, Kanta ONO
  • Publication number: 20150008998
    Abstract: The invention provides a nanocomposite magnet, which has achieved high coercive force and high residual magnetization. The magnet is a non-ferromagnetic phase that is intercalated between a hard magnetic phase with a rare-earth magnet composition and a soft magnetic phase, wherein the non-ferromagnetic phase reacts with neither the hard nor soft magnetic phase. A hard magnetic phase contains Nd2Fe14B, a soft magnetic phase contains Fe or Fe2Co, and a non-ferromagnetic phase contains Ta. The thickness of the non-ferromagnetic phase containing Ta is 5 nm or less, and the thickness of the soft magnetic phase containing Fe or Fe2Co is 20 nm or less. Nd, or Pr, or an alloy of Nd and any one of Cu, Ag, Al, Ga, and Pr, or an alloy of Pr and any one of Cu, Ag, Al, and Ga is diffused into a grain boundary phase of the hard magnetic phase of Nd2Fe14B.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 8, 2015
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidefumi Kishimoto, Noritsugu Sakuma, Masao Yano, Weibin Cui, Yukiko Takahashi, Kazuhiro Hono
  • Publication number: 20140238553
    Abstract: Provided are a sintered body for forming a rare-earth magnet with a high degree of orientation and high remanent magnetization, and a method for producing magnetic powder for forming the sintered body. A sintered body S that is a precursor of a rare-earth magnet, the sintered body S including crystal grains g2 of an Nd—Fe—B-based main phase with a nanocrystalline structure, and a grain boundary phase around the main phase, and the rare-earth magnet being adapted to be formed by applying hot deformation processing to the sintered body S for imparting anisotropy thereto and further diffusing an alloy for improving coercivity therein. Each crystal grain g2 that forms the sintered body S has a planar shape that is, when viewed from a direction perpendicular to an easy direction of magnetization (i.e., a c-axis direction), a rectangle having sides in the c-axis direction and sides in a direction (i.e., an a-axis direction) that is perpendicular to the c-axis direction, or a shape that is close to the rectangle.
    Type: Application
    Filed: October 9, 2012
    Publication date: August 28, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu Sakuma, Hidefumi Kishimoto, Masao Yano
  • Publication number: 20120312422
    Abstract: A molten alloy that has a nanocomposite magnet composition is quenched and solidified to fabricate a foil that has a polycrystalline phase composed of a hard magnetic phase with an average crystal grain diameter of 10 to 200 nm and a soft magnetic phase with an average crystal grain diameter of 1 to 100 nm. The foil that includes a low melting point phase that is formed on a surface of the foil and that has a melting point that is lower than that of the polycrystalline phase is sintered.
    Type: Application
    Filed: January 27, 2011
    Publication date: December 13, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masao Yano, Noritsugu Sakuma, Tetsuya Shoji
  • Publication number: 20120247624
    Abstract: A rare earth magnet of the invention has a composition represented by the compositional formula RaHbFecCodBeMf, where: R is at least one rare earth element including Y; H is at least one heavy rare earth element from among Dy and Tb; M is at least one element from among Ga, Zn, Si, Al, Nb, Zr, Ni, Cu, Cr, Hf, Mo, P, C, Mg, and V; 13?a?20; 0?b?4; c=100?a?b?d?e?f; 0?d?30; 4?e?20; 0?f?3, and has a structure constituted by a main phase: a (RH)2(FeCo)14B phase, and a grain boundary phase: a (RH)(FeCo)4B4 phase and a RH phase, with a crystal grain size of the main phase of 10 nm to 200 nm.
    Type: Application
    Filed: December 16, 2010
    Publication date: October 4, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritsugu Sakuma, Tetsuya Shoji, Masao Yano
  • Patent number: 6818123
    Abstract: The invention is a water purification system through denitrifying reduction with faculative anaerobes in which a nitrate harmful in the breeding of creatures such as tropical fishes and coral for appreciation and fishes and shellfishes for food and the like is decomposed and denitrifying-reduced in a short time. In this case, an aerobic circulating pathway of water reduced through a filter using aerobes is separately arranged from an anaerobic circulating pathway of water reduced through a closed type anaerobic filter device (10) using anaerobes. A nitrate produced in the aerobic circulating pathway is exuded into the anaerobic circulating pathway through powdery sand (5). This nitrate is decomposed in the anaerobic circulating pathway. A nitrogen gas inside the anaerobic circulating pathway produced in the decomposition of the nitrate is discharged at an isolated state so as not to contact with water in the aerobic circulating pathway.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: November 16, 2004
    Inventor: Masao Yano
  • Publication number: 20030047496
    Abstract: The invention is a water purification system through denitrifying reduction with faculative anaerobes in which a nitrate harmful in the breeding of creatures such as tropical fishes and coral for appreciation and fishes and shellfishes for food and the like is decomposed and denitrifying-reduced in a short time. In this case, an aerobic circulating pathway of water reduced through a filter using aerobes is separately arranged from an anaerobic circulating pathway of water reduced through a closed type anaerobic filter device (10) using anaerobes. A nitrate produced in the aerobic circulating pathway is exuded into the anaerobic circulating pathway through powdery sand (5). This nitrate is decomposed in the anaerobic circulating pathway. A nitrogen gas inside the anaerobic circulating pathway produced in the decomposition of the nitrate is discharged at an isolated state so as not to contact with water in the aerobic circulating pathway.
    Type: Application
    Filed: July 22, 2002
    Publication date: March 13, 2003
    Inventor: Masao Yano
  • Patent number: 4756593
    Abstract: A connector comprises a plug and a socket. The plug has a main plug body, a plurality of contact pins projecting from the main plug body and including a contact pin for grounding, and a shielding member surrounding the plurality of contact pins. The socket has a main socket body, a plug receiving part provided on the main socket body for receiving the shielding member, a plurality of contact portions provided within the plug receiving part for making contact with corresponding ones of the plurality of contact pins and including a first contact portion for making contact with the contact pin for grounding, and a second contact portion provided on the main socket body for making contact with the shielding member. The plug is detachably coupled to the socket by inserting the shielding member into the plug receiving part. The first and second contact portions are made of a single contact member.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: July 12, 1988
    Assignees: Hitachi, Ltd., Mitsumi Electric Co., Ltd.
    Inventors: Yasumasa Koakutsu, Seiichi Onoda, Masao Yano, Junichi Shimizu, Sadahiro Ohyama, Noriaki Sekine, Noribumi Ishi, Jiro Nakano, Hideji Matsuura, Yasusi Anzo
  • Patent number: 4741595
    Abstract: In a device for coupling optically a light source with an optical transmission path, the present invention interposes an optical transmission path structure at the center of the distance between them in order to improve the optical coupling efficiency. The optical transmission path structure consists of a plurality of light transmitting elements arranged so that the light from the light source is received by the structure as incident light and is sent out therefrom as outgoing light at an outgoing angle which is equal to the angle of incidence. The light transmitting elements are arranged in parallel with the optical path of the light emitted from the light source and according to this arrangement, the system of the present device becomes equivalent to a system in which the positions of the light source are located at points of .+-.l.sub.1 from the light outgoing surface of the optical transmission path structure.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: May 3, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Seiichi Onoda, Yasumasa Koakutsu, Masaaki Kusano, Tamio Takeuchi, Syouji Yamada, Masao Yano, Ichiro Ikushima, Kiyohide Miyake, Toshiki P. Tanaka
  • Patent number: 4720630
    Abstract: An opto-electric transformation connector is provided, which can be used, as if it were an electric connector, without consideration of optical transmission of devices connected therewith, in a connecting system for connecting different devices by means of optical fibers. The connector includes an electronic circuit board, on which not only a light emitting element for transmitting optical signals and a light receiving element for receiving optical signals are disposed, but also a driving circuit for driving the light emitting element and an amplifier circuit for amplifying the light signals received by the light receiving element are mounted.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: January 19, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Tamio Takeuchi, Yasumasa Koakutsu, Junichi Shimizu, Masao Yano, Minoru Ikenoue, Seiichi Onoda
  • Patent number: 4715673
    Abstract: An optical switch having a small number of optical connections includes a substrate in which are provided a first light path for conducting optical signals and a second light path consisting of a photosensitive element and light emitting element in pairs. An optical fiber cable is interrupted by the substrate, and optical signals in the fiber cable are transmitted through the first light path or intervened by an electrical system through the second light path in response to the switching movement of the substrate.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: December 29, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Takanobu Noro, Yasumasa Koakutsu, Tamio Takeuchi, Masao Yano, Seiichi Onoda, Hideo Arima, Hitoshi Yokono, Hirayoshi Tanei
  • Patent number: 4555750
    Abstract: This invention relates to an apparatus for controlling a D.C. power transmission system having a line-commutated converter which is connected between a first A.C. system and D.C. power transmission lines and which performs power conversion between A.C. power and D.C. power, and a forced-commutated converter which is connected between the D.C. power transmission lines and having a second A.C. system and which performs power conversion between A.C. power and D.C. power. In order to control transmission power in the two-terminal D.C. power transmission system wherein the two A.C. systems are associated by direct current, a control apparatus for a D.C. power transmission system according to this invention includes a voltage detector which detects a D.C. voltage of the D.C.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: November 26, 1985
    Assignees: Susumu Matsumura, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Susumu Matsumura, Yasuhiko Hosokawa, Kanji Katsuki, Masao Yano
  • Patent number: 4536816
    Abstract: A thyristor apparatus employing light-triggered thyristors comprises forward voltage detecting circuits (15) and a thyristor number detecting circuit (17). The forward voltage detecting circuits (15) detect forward voltages applied to light-triggered thyristors (13) to provide detected signals. The thyristor number detecting circuit (17) is responsive to the detected signals to cause light-triggered thyristors in a thyristor arm (U) to be turned on simultaneously in the case where the number of the light-triggered thyristors being supplied with forward voltages is one or more but not more than a predetermined number. Accordingly, if and when an overvoltage is applied to the thyristor arm (U), overvoltage suppressing elements (14) are prevented from being damaged even if partial commutation failure occurs in the light-triggered thyristors.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: August 20, 1985
    Assignees: Susumu Jatsumura, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Susumu Matsumura, Masao Yano, Nobuo Sashida, Yoshihiko Yamamoto
  • Patent number: 4515943
    Abstract: Novel highly pure and stable crystals of .beta.-nicotinamide-adenine-dinucleotide tetrahydrate (NAD) which is triclinic system and has a space group of P1 or P1 and lattice constants: a=8.861 .ANG., b=11.181 .ANG., c=8.630 .ANG., .alpha.=90.82.degree., .beta.=103.40.degree. and .gamma.=109.71.degree.. The crystalline NAD is prepared by cooling a 20 to 60 w/v % aqueous solution of amorphous NAD, which has preferably been treated with a porous weakly basic anion exchange resin to remove impurities, at a temperature of 0.degree. to 20.degree. C. When the crystalline NAD is added to the aqueous solution as seeds, the desired high pure crystalline NAD is prepared without conducting the treatment of amorphous NAD with the porous weakly basic anion exchange resin. A high pure amorphous NAD is obtained from the crystalline NAD by dissolving the crystalline NAD in water and subjecting the aqueous solution to freeze drying or precipitation with a solvent.
    Type: Grant
    Filed: April 19, 1983
    Date of Patent: May 7, 1985
    Assignee: Kohjin Co., Ltd.
    Inventors: Toyofumi Miya, Yukiharu Kobayashi, Masao Yano
  • Patent number: 4472674
    Abstract: A method of static reactive power compensation is disclosed wherein the system voltage is compensated by supplying advanced-phase or retarded phase reactive power in dependence upon the difference between the system voltage and a reference voltage. The difference is formed by a comparator which receives a variable reference voltage from a filter containing a time lag circuit and which receives the system voltage as an input. For transients, the output of the filter does not change and thus reactive power is applied. For smooth variations, the output of the filter follows that of the system voltage so that the output of the power compensation circuit is maintained at zero.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: September 18, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Yano, Hiroshi Suzuki, Setsuro Mine, Masatoshi Takeda
  • Patent number: 4411967
    Abstract: In a generating system including a plurality of parallel-operated fuel cells possessing a plurality of stacks, each of the cells is provided with a control circuit comprising chopper means each composed of switching elements which are ignition-controlled and each of which is connected to the output terminal of the respective cells, and ignition circuits each generating an ignition signal for ignition-controlling the switching elements in such manner that output current of the chopper means is made to be a prescribed value in accordance with the output current, whereby output control is effected in respect of each stack of the fuel cells so that load in respect of the respective cells is equalized and parallel operation with a high efficiency is effectuated.
    Type: Grant
    Filed: April 13, 1982
    Date of Patent: October 25, 1983
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masao Yano