Patents by Inventor Yoshiaki Saito

Yoshiaki Saito 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: 20050202223
    Abstract: A resin-made interior member for an opening and closing body of the invention is a resin-made interior member to be attached to an inside of an outer panel of the opening and closing body and is formed by an injection molding method using a molding material of polypropylene type resin containing a reinforcing fiber and rubber and by properly setting the respective contents of the reinforcing fiber and the rubber component, the modulus of bend elasticity is improved by blending the reinforcing fiber without being accompanied with deterioration of the moldability as the material resin and the appearance of the molded product to improve rigidity of the interior member and impact resistance is assured by blending the rubber component to give the interior member with good moldability and appearance in form of the molded product and having a required rigidity and impact resistance.
    Type: Application
    Filed: April 28, 2003
    Publication date: September 15, 2005
    Inventors: Issei Harima, Yoshiaki Saito, Takahiro Tochioka
  • Publication number: 20050195532
    Abstract: An area of an element can be made small and fluctuation in area can be reduced. A magneto-resistance effect element is provided with a first electrode with an end face; a magneto-resistance effect film which is formed such that a surface thereof comes in contact with the end face of the first electrode; and a second electrode which is formed on another surface of the magneto-resistance effect element opposed from the surface coming in contact with the surface of the first electrode. The magneto-resistance effect film includes a magnetization pinned layer whose magnetization direction is pinned, a magnetization free layer whose magnetization direction is changeable, and a first non-magnetic layer which is provided between the magnetization pinned layer and the magnetization free layer.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 8, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideyuki Sugiyama, Yoshiaki Saito
  • Publication number: 20050185347
    Abstract: A magnetoresistive element has a ferromagnetic double tunnel junction having a stacked structure of a first antiferromagnetic layer/a first ferromagnetic layer/a first dielectric layer/a second ferromagnetic layer/a second dielectric layer/a third ferromagnetic layer/a second antiferromagnetic layer. The second ferromagnetic layer that is a free layer consists of a Co-based alloy or a three-layered film of a Co-based alloy/a Ni—Fe alloy/a Co-based alloy. A tunnel current is flowed between the first ferromagnetic layer and the third ferromagnetic layer.
    Type: Application
    Filed: April 21, 2005
    Publication date: August 25, 2005
    Applicant: KABUSHI KAISHA TOSHIBA
    Inventors: Koichiro Inomata, Kentaro Nakajima, Yoshiaki Saito, Masayuki Sagoi, Tatsuya Kishi
  • Patent number: 6934184
    Abstract: A highly reliable magnetic memory exhibits enhanced data-holding stability at high storage density in a storage layer of a magnetoresistive effect element used for memory cells. A magnetic memory includes a memory cell array having first wirings, second wirings intersecting the first wirings and memory cells each provided at an intersection area of the corresponding first and second wirings. Each memory cell is selected when the corresponding first and second wirings are selected.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: August 23, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Amano, Tatsuya Kishi, Hiroaki Yoda, Yoshiaki Saito, Shigeki Takahashi, Tomomasa Ueda, Katsuya Nishiyama, Yoshiaki Asao, Yoshihisa Iwata
  • Publication number: 20050170218
    Abstract: A magnetoresistive effect element of a tunnel junction type includes a magnetic multi-layered film (1), ferromagnetic film (3) and intervening insulating film (2) such that a current flows between the magnetic multi-layered film and the ferromagnetic film, tunneling through the insulating film. The magnetic multi-layered film includes a first ferromagnetic layer, second ferromagnetic layer and anti-ferromagnetic layer inserted between the first and second ferromagnetic layers.
    Type: Application
    Filed: March 3, 2005
    Publication date: August 4, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Kishi, Yoshiaki Saito, Minoru Amano, Shigeki Takahashi, Katsuya Nishiyama
  • Patent number: 6907384
    Abstract: A method and system for managing a construction machine whereby working time for each of different parts of a hydraulic excavator is measured. Measured data is stored in a memory of a controller and then transferred to a base station computer via satellite communication to be stored in a database. At each repair/replacement of a part in each hydraulic excavator, the base station computer calculates, based on the operation data, a replacement time interval of the part on the basis of the working time per section to which the part belongs, and then stores and accumulates it. The base station computer also reads the stored data for each hydraulic excavator, determines, for each part, a replacement rate of the part having a substantially equal replacement time interval, and calculates a target replacement time interval of the part in accordance with the replacement time interval corresponding to a maximum replacement rate.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: June 14, 2005
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroyuki Adachi, Toichi Hirata, Genroku Sugiyama, Hiroshi Watanabe, Koichi Shibata, Hideki Komatsu, Shuichi Miura, Koji Mitsuya, Yoshiaki Saito, Atsushi Sato
  • Publication number: 20050088788
    Abstract: There are provided a magnetoresistive effect element, which has a large MR ratio, excellent thermostability and a small switching magnetic field even if its size is decreased, and a magnetic memory using the magnetoresistive effect element. The magnetoresistive effect element includes: a storage layer formed by stacking a plurality of ferromagnetic layers via non-magnetic layers; a magnetic film having at least one ferromagnetic layer; and a tunnel barrier layer provided between the storage layer and the magnetic film.
    Type: Application
    Filed: November 1, 2004
    Publication date: April 28, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Katsuya Nishiyama, Yoshiaki Saito, Minoru Amano
  • Publication number: 20050083745
    Abstract: A magnetic memory includes: a magnetoresistance effect element having a magnetic recording layer; a first writing wiring extending in a first direction on or below the magnetoresistance effect element, a center of gravity of an axial cross section of the wiring being apart from a center of thickness at the center of gravity, and the center of gravity being eccentric toward the magnetoresistance effect element; and a writing circuit configured to pass a current through the first writing wiring in order to record an information in the magnetic recording layer by a magnetic field generated by the current.
    Type: Application
    Filed: November 5, 2004
    Publication date: April 21, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Kishi, Minoru Amano, Yoshiaki Saito, Shigeki Takahashi, Katsuya Nishiyama, Yoshiaki Asao, Hiroaki Yoda, Tomomasa Ueda, Yoshihisa Iwata
  • Publication number: 20050078417
    Abstract: Magnetoresistance effect devices for attaining magnetically stability and for reducing a switching magnetic field. One of the ferromagnetic layers of the magnetoresistance effect device has a plane shape in which a width of an end portions is wider than a center portion sandwiched by two end portions. The end portions are not symmetrical with respect to an easy magnetization axis or longer axis of the plane shape of ferromagnetic material layer, but are substantially rotationally symmetrical with a center of the plane shape as a pivot. The plane shape may have an S-shape where its magnetic domain is stabilized and the switching magnetic field is reduced. The manufacturing method uses two linear mask patterns intersecting with each other to form sharp corners of a ferromagnetic tunnel junction. An electron beam (EB) drawing may be used to form the S-shape plane.
    Type: Application
    Filed: July 25, 2003
    Publication date: April 14, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Kishi, Shigeki Takahashi, Kentaro Nakajima, Minoru Amano, Masayuki Sagoi, Yoshiaki Saito
  • Publication number: 20050078418
    Abstract: There is provided a magnetoresistance effect element including a first pinned ferromagnetic layer, a second pinned ferromagnetic layer facing the first pinned ferromagnetic layer, surface regions of the first and second pinned ferromagnetic layer facing each other being different from each other in composition, a free ferromagnetic layer intervening between the first and second pinned ferromagnetic layers, a first tunnel barrier layer intervening between the first pinned ferromagnetic layer and the free ferromagnetic layer, and a second tunnel barrier layer intervening between the second pinned ferromagnetic layer and the free ferromagnetic layer.
    Type: Application
    Filed: October 20, 2004
    Publication date: April 14, 2005
    Inventors: Yoshiaki Saito, Masayuki Sagoi, Minoru Amano, Kentaro Nakajima, Shigeki Takahashi, Tatsuya Kishi
  • Patent number: 6879475
    Abstract: A magnetoresistive effect element of a tunnel junction type includes a magnetic multi-layered film (1), ferromagnetic film (3) and intervening insulating film (2) such that a current flows between the magnetic multi-layered film and the ferromagnetic film, tunneling through the insulating film. The magnetic multi-layered film includes a first ferromagnetic layer, second ferromagnetic layer and anti-ferromagnetic layer inserted between the first and second ferromagnetic layers.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: April 12, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Kishi, Yoshiaki Saito, Minoru Amano, Shigeki Takahashi, Katsuya Nishiyama
  • Patent number: 6873023
    Abstract: A write word line is disposed right under an MTJ element. The write word line extends in an X direction, and a lower surface of the line is coated with a yoke material which has a high permeability. A data selection line (read/write bit line) is disposed right on the MTJ element. A data selection line extends in a Y direction intersecting with the X direction, and an upper surface of the line is coated with the yoke material which has the high permeability. At a write operation time, a magnetic field generated by a write current flowing through a write word line B and data selection line functions on the MTJ element by the yoke material with good efficiency.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: March 29, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Asao, Yoshihisa Iwata, Yoshiaki Saito, Hiroaki Yoda, Tomomasa Ueda, Minoru Amano, Shigeki Takahashi, Tatsuya Kishi
  • Publication number: 20050057960
    Abstract: It is possible to perform a writing operation with low power consumption and a low current, and enhance reliability without causing element breakdown. There are provided a first magnetization-pinned layer including at least one magnetic film in which a magnetization direction is pinned; a second magnetization-pinned layer including at least one magnetic film in which a magnetization direction is pinned; a magnetic recording layer formed between the first magnetization-pinned layer and the second magnetization-pinned layer and including at least one magnetic film in which a magnetization direction is changeable by injecting spin-polarized electrons; a tunnel barrier layer formed between the first magnetization-pinned layer and the magnetic recording layer; and a nonmagnetic intermediate layer formed between the magnetic recording layer and the second magnetization-pinned layer.
    Type: Application
    Filed: July 29, 2004
    Publication date: March 17, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshiaki Saito, Hideyuki Sugiyama
  • Patent number: 6868002
    Abstract: There is provided a magnetic memory including first and second wirings intersecting each other and disposed apart from each other, a magnetoresistance effect film positioned between the first and second wirings, and a first magnetic film including a first portion facing the magnetoresistance effect film with the first wiring interposed therebetween and a pair of second portions positioned on both sides of the first wiring and magnetically connected to the first portion, each of the first and second portions having either one of a high saturation magnetization soft magnetic material containing cobalt and a metal-nonmetal nano-granular film.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: March 15, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Saito, Koichiro Inomata, Minoru Amano, Kentaro Nakajima, Masayuki Sagoi, Tatsuya Kishi, Shigeki Takahashi
  • Publication number: 20050055392
    Abstract: Random control voltages are applied to an oscillating circuit with an oscillation frequency control section from a noise generating circuit to generate random oscillation voltages which correspond to frequency signals from the oscillating circuit. The random oscillation voltages are digitally converted at an A/D converter and input into a personal computer, where a given threshold value is defined to the amplitudes of the random oscillation voltages and numerals “0” and “1” are allotted to the random oscillation voltages on the magnitude relation between the threshold value and the amplitudes of the random oscillation voltages. As a result, a binary random number relating to numerals “0” and “1” can be generated.
    Type: Application
    Filed: October 17, 2003
    Publication date: March 10, 2005
    Applicant: NIIGATA UNIVERSITY
    Inventor: Yoshiaki Saito
  • Publication number: 20050041456
    Abstract: It is possible to obtain excellent heat stability even though the element is miniaturized and keep stable magnetic domains even though switching is repeated any number of times. A magneto-resistive effect element includes: a magnetization-pinned layer including a magnetic film having a spin moment oriented in a direction perpendicular to a film surface thereof and pinned in the direction; a magnetic recording layer having a spin moment oriented in a direction perpendicular to a film surface thereof; a nonmagnetic layer formed between the magnetization-pinned layer and the magnetic recording layer; and an anti-ferromagnetic film formed on at least side surfaces of the magnetization-pinned layer.
    Type: Application
    Filed: July 9, 2004
    Publication date: February 24, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yoshiaki Saito
  • Patent number: 6857003
    Abstract: A method of generating random numbers comprises: generating a first noise and passing the first noise through a first high pass filter which removes a periodic component contained in the first noise to produce a first noise signal having 1/f characteristic; generating a second noise and passing the second noise through a second high pass filter which removes a periodic component contained in the second noise to produce a second noise signal having 1/f characteristic; supplying the first and second noise signals to a differential circuit to derive a different signal between the first noise signal and said second noise signal; and generating, from the different signal, random numbers which do not have a periodicity due to 1/f characteristics of the first and second noise signals.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: February 15, 2005
    Assignee: Niigata University
    Inventor: Yoshiaki Saito
  • Publication number: 20050012129
    Abstract: A magnetic switching element includes: a ferromagnetic layer which is substantially pinned in magnetization in one direction; and a magnetic semiconductor layer provided within a range where a magnetic field from the ferromagnetic layer reaches, where the magnetic semiconductor layer changes its state from a paramagnetic state to a ferromagnetic state by applying a voltage thereto, and a magnetization corresponding to the magnetization of the ferromagnetic layer is induced in the magnetic semiconductor layer by applying a voltage to the magnetic semiconductor layer.
    Type: Application
    Filed: August 16, 2004
    Publication date: January 20, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yoshiaki Saito
  • Patent number: 6839206
    Abstract: There is provided a magnetoresistance effect element including a first pinned ferromagnetic layer, a second pinned ferromagnetic layer facing the first pinned ferromagnetic layer, surface regions of the first and second pinned ferromagnetic layer facing each other being different from each other in composition, a free ferromagnetic layer intervening between the first and second pinned ferromagnetic layers, a first tunnel barrier layer intervening between the first pinned ferromagnetic layer and the free ferromagnetic layer, and a second tunnel barrier layer intervening between the second pinned ferromagnetic layer and the free ferromagnetic layer.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: January 4, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Saito, Masayuki Sagoi, Minoru Amano, Kentaro Nakajima, Shigeki Takahashi, Tatsuya Kishi
  • Publication number: 20040257866
    Abstract: A highly reliable magnetic memory exhibits enhanced data-holding stability at high storage density in a storage layer of a magnetoresistive effect element used for memory cells. A magnetic memory includes a memory cell array having first wirings, second wirings intersecting the first wirings and memory cells each provided at an intersection area of the corresponding first and second wirings. Each memory cell is selected when the corresponding first and second wirings are selected.
    Type: Application
    Filed: July 20, 2004
    Publication date: December 23, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Minoru Amano, Tatsuya Kishi, Hiroaki Yoda, Yoshiaki Saito, Shigeki Takahashi, Tomomasa Ueda, Katsuya Nishiyama, Yoshiaki Asao, Yoshihisa Iwata