Patents by Inventor Masaru Tomita

Masaru Tomita 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).

  • Patent number: 7046110
    Abstract: There is established a superconducting magnet made of a high-temperature bulk superconductor and capable of trapping a high magnetic field with ease and stably. The superconducting magnet made of the high-temperature bulk superconductor, for use by trapping a magnetic field, is made of the bulk superconductor provided with an artificial hole, a low melting metal impregnated into, and filling up at least the artificial hole, and a heat conducting metal material embedded with portions of the high-temperature bulk superconductor, impregnated with, and filled with the low melting metal. The superconducting magnet can be produced by a process comprising the steps of providing the artificial hole in the high-temperature bulk superconductor, disposing the heat conducting metal material in at least the artificial hole, applying a process of impregnating and filling up at least the artificial hole with the low melting metal, and subsequently, executing a process of magnetizing.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 16, 2006
    Assignees: International Superconductivity Technology Center, The Juridical Foundation, Railway Technical Research Institute, The Juridical Foundation
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 6870452
    Abstract: In order to provide an inexpensive mechanical persistent current switch with a short operation time and a large capacity without causing energy loss, a mechanical persistent current switch comprises a bulk member which is made of RE—Ba—Cu—O superconductor (RE is a rare earth element), connector material, and the bulk member made of RE—Ba—Cu—O superconductor is made by a melt process in which resin is impregnated, and an current terminal and a voltage terminal pasted onto the bulk member.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: March 22, 2005
    Assignees: International Supperconductivity Technology Center, the Juridical Foundation, Railway Technical Research Institute
    Inventors: Masaru Tomita, Masato Murakami, Koichiro Sawa
  • Patent number: 6721626
    Abstract: A central position of a wafer 10 set on a place table 41 is calculated, a turn angle of the place table 41 when the wafer 10 is in the predetermined orientation is calculated based on the calculation result of the central position and positional information of an ID mark 11 received in advance and the quantity of expanding and contracting a transfer arm 30 and the turn angle of a turntable 39 are calculated for setting the wafer 10 such that the ID mark 11 is in the predetermined position and orientation to an OCR 43, and the turn angle of the place table 41 calculated based on the turn angle of the turntable 39 is corrected, the place table 41 is turned only by the corrected turn angle and the wafer 10 is turned and transferred to the OCR 43 by the transfer unit 3.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: April 13, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Masaru Tomita, Shuji Akiyama
  • Publication number: 20030231091
    Abstract: There is established means for providing a superconducting magnet made of a high-temperature bulk superconductor, capable of trapping a high magnetic field with ease and stably. The superconducting magnet made of the high-temperature bulk superconductor, for use by trapping a magnetic field, comprises the bulk superconductor provided with an artificial hole, a low melting metal impregnated into, and filling up at least the artificial hole, and a heat conducting metal material embedded with portions of the high-temperature bulk superconductor, impregnated with, and filled with the low melting metal. The superconducting magnet can be produced by a process comprising steps of providing the artificial hole in the high-temperature bulk superconductor, disposing the heat conducting metal material in at least the artificial hole, applying a process of impregnating and filling up at least the artificial hole with the low melting metal, and subsequently, executing a process of magnetizing.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 18, 2003
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 6657526
    Abstract: There is provided a power lead for a superconductive magnet capable of controlling the invasion of heat to liquid helium for storing superconductive coils therein and of sufficiently feeding power to the superconductive coils. The power lead for a superconductive magnet of a superconductor magneto unit for supplying a current to the superconductive coils which are cooled at a liquid helium temperature through a radiant heat shielded section which is cooled at a liquid nitrogen temperature, wherein at least a part of sections positioned inside the radiant heat shielded section of a current lead member of the superconductive magnet comprises a high temperature oxide superconductor bulk body having a critical temperature exceeding a liquid nitrogen temperature. In this case, it is preferable to apply a resin impregnation treatment to the bulk body to enforce the high temperature oxide superconductor bulk body section.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 2, 2003
    Assignees: International Superconductivity Technology Center, Railway Technical Research Institute
    Inventors: Ken Nagashima, Masaru Tomita, Kaoru Nemoto, Toshiki Herai, Masato Murakami
  • Publication number: 20030023343
    Abstract: A wafer transfer system which reduces time for orienting a wafer in transferring the wafer and improving the efficiency of transferring the wafer.
    Type: Application
    Filed: July 1, 2002
    Publication date: January 30, 2003
    Applicant: Murata Kikai Kabushiki Kaisha
    Inventors: Masaru Tomita, Shuji Akiyama
  • Publication number: 20020190824
    Abstract: In order to provide an inexpensive mechanical persistent current switch with a short operation time and a large capacity without causing energy loss, a mechanical persistent current switch comprises a bulk member which is made of RE-Ba—Cu—O superconductor (RE is a rare earth element), connector material, and the bulk member made of RE-Ba—Cu—O superconductor is made by a melt process in which resin is impregnated, and an current terminal and a voltage terminal pasted onto the bulk member.
    Type: Application
    Filed: January 25, 2002
    Publication date: December 19, 2002
    Applicant: International Superconductivity Technology Center, the Juridical Foundation
    Inventors: Masaru Tomita, Masato Murakami, Koichiro Sawa
  • Publication number: 20020132738
    Abstract: There is provided a power lead for a superconductive magnet capable of controlling the invasion of heat to liquid helium for storing superconductive coils therein and of sufficiently feeding power to the superconductive coils. The power lead for a superconductive magnet of a superconductor magneto unit for supplying a current to the superconductive coils which are cooled at a liquid helium temperature through a radiant heat shielded section which is cooled at a liquid nitrogen temperature, wherein at least a part of sections positioned inside the radiant heat shielded section of a current lead member of the superconductive magnet comprises a high temperature oxide superconductor bulk body having a critical temperature exceeding a liquid nitrogen temperature. In this case, it is preferable to apply a resin impregnation treatment to the bulk body to enforce the high temperature oxide superconductor bulk body section.
    Type: Application
    Filed: December 21, 2001
    Publication date: September 19, 2002
    Inventors: Ken Nagashima, Masaru Tomita, Kaoru Nemoto, Toshiki Herai, Masato Murakami
  • Patent number: 6413624
    Abstract: An oxide superconductor is capable of assuring a high trapped magnetic field and maintaining its performance for a long period of time without being affected by internal or external forces, such as thermal strain or by corrosive environments. The oxide superconductor contains a resin impregnated layer incorporated with a filler material having a low value of linear thermal expansion coefficient, or contains the resin impregnated layer or a resin impregnated layer incorporated with a filler material and covered with a resin layer incorporated with the filler material having a low value of linear thermal expansion coefficient, or contains an oxide superconductive bulk body having an adhesively covering layer of resin impregnated fabric on the outside surface, or contains an oxide superconductive bulk body having on the surface thereof a resin or a resin-impregnated layer dispersedly incorporated with a filler material.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: July 2, 2002
    Assignees: International Superconductivity Technology Center, Railway Technical Research Institute
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 6365553
    Abstract: The invention provides an oxide superconductor capable of sufficiently withstanding external forces such as a large electromagnetic force and thermal stresses accompanying rapid heating and cooling while in service, and internal stresses so as to be able to exhibit a high trapped magnetic field stably over a long period of time. The oxide superconductor such as, for example, “a copper oxide superconductor containing rare earth elements”, is composed of an oxide superconductive bulk body impregnated with a low melting metal or an oxide superconductive bulk body impregnated with a low melting metal and having a thin film of the low melting metal formed on the external surface thereof. Such oxide superconductors as described above can be produced by a process whereby the oxide superconductive bulk body kept in an atmosphere of reduced pressure is brought into contact with the low melting metal.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: April 2, 2002
    Assignees: International Superconductivity Technology Center, Railway Technical Research Institute
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 6297199
    Abstract: There are disclosed an oxide superconductor which is made of an oxide superconductive bulk body (e.g. a rare earth element base copper-oxide superconductive bulk body) which has a resin impregnated layer (e.g. epoxy base resin impregnated layer), and, optionally, a proper amount of silver or a silver oxide; and a process for producing the above oxide superconductor which comprises impregnating a resin into an oxide superconductive bulk body by bringing the resin in liquid form into contact with the bulk body which is preserved in an atmosphere of reduced pressure. The above superconductor is capable of assuring a high trapped magnetic field and maintaining its performance for a long period of time without being affected by internal or external forces such as electromagnetic forces or thermal strains or by corrosive environments.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: October 2, 2001
    Assignees: International Superconductvity Technology Center, Railway Technical Research Institute
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 6268837
    Abstract: A display control device comprises a navigation unit for generating route guidance data; a small-sized display unit for displaying information concerning audio-system; and a main unit connected via an interface to the navigation unit and the small-sized display unit with a communication cable, said main unit including: recognizing means for recognizing the connection of the small-sized display unit; and control means for sending out a request for route guidance display to the navigation unit when the recognizing means recognizes the connection of the small-sized display unit, and causing the received route guidance data to be displayed through interruption on the small-sized display unit when the route guidance data generated by the navigation unit is received via the communication cable and the interface.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: July 31, 2001
    Assignee: Clarion Co., LTD
    Inventors: Kazutomo Kobayashi, Eiichi Iwasa, Masaru Tomita
  • Patent number: 6118441
    Abstract: A display device is provided with a center unit 10 having a center display unit 12, a slave unit 20 having a slave display unit 21 and a communication line for communicatively connecting the center unit 10 and the slave unit 20. When the center control microcomputer 15 of the center unit 10 detects a predetermined operation through a key operating unit 14, the center control microcomputer 15 and the slave control microcomputer 24 make two of the center display unit 12 and the slave display unit 21 provide a linking display as if these display units operate as one display unit.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: September 12, 2000
    Assignee: Clarion Co., Ltd.
    Inventors: Kazutomo Kobayashi, Eiichi Iwasa, Masaru Tomita