Patents by Inventor Tomoyuki Yamaguchi

Tomoyuki Yamaguchi 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: 8926759
    Abstract: An object of the invention is to remove effectively metallic contaminants adhering to the glass substrate surfaces without increasing roughness of the glass substrate surfaces in the glass substrate for a magnetic disk. In a manufacturing method of a glass substrate for a magnetic disk, a cleaning step comprising a treatment of contacting the glass substrate with a cleaning liquid containing peroxodisulfate and having a pH of not less than 2 and not more than 4 is appended. In addition, an example of the cleaning liquid can be prepared by adding sodium peroxodisulfate to an acidic solution.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: January 6, 2015
    Assignee: Hoya Corporation
    Inventors: Takuhiro Hirakawa, Yasunari Hirano, Kouichi Tamoto, Tomoyuki Yamaguchi
  • Publication number: 20140338008
    Abstract: It is revealed that an organ such as pancreas can be regenerated by utilizing a fact that the deficiency of an organ is complemented by injecting an induced pluripotent stem cell (iPS cell) into a developed blastocyst in a blastocyst complementation method. Thus, the present invention has solved the above-described object. This provides a method for producing a target organ, using an iPS cell, in a living body of a non-human mammal having an abnormality associated with a lack of development of the target organ in a development stage, the target organ produced being derived from a different individual mammal that is an individual different from the non-human mammal.
    Type: Application
    Filed: March 5, 2014
    Publication date: November 13, 2014
    Applicant: The University of Tokyo
    Inventors: Hiromitsu Nakauchi, Toshihiro Kobayashi, Tomoyuki Yamaguchi, Sanae Hamanaka
  • Patent number: 8563077
    Abstract: A method of manufacturing a magnetic disk glass substrate has a cleaning step of cleaning the glass substrate. In the cleaning step, the cleaning is performed under an acidic condition using a cleaning liquid containing oxalate ions and bivalent iron ions. In parallel with the cleaning step or before or after the cleaning step, trivalent iron ions generated by oxidation of the bivalent iron ions contained in the cleaning liquid are reduced by ultraviolet irradiation.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 22, 2013
    Assignee: Hoya Corporation
    Inventors: Tomoyuki Yamaguchi, Kyosuke Iiizumi
  • Publication number: 20130028890
    Abstract: An object of the present invention is to provide a technique to distinguish between Treg cells and activated T cells in a live state. Another object of the present invention is to provide a pharmaceutical composition for immunostimulation that can reduce the number of Treg cells in vivo and effectively express the immune response of activated T cells. In the method of the present invention, Treg cells are detected from test cells containing (i) regulatory T cells and (ii) at least one type of cell selected from the group consisting of naive T cells and activated T cells, wherein expressions of folate receptor 4 on the surfaces of cells are measured and Treg cells are detected using the expressions as an indicator. The present invention uses anti-folate receptor 4 antibody or folate receptor 4-binding fragment as an active ingredient contained in a pharmaceutical composition for immunostimulation.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 31, 2013
    Applicants: RIKEN, KYOTO UNIVERSITY
    Inventors: Shimon Sakaguchi, Keiji Hirota, Tomoyuki Yamaguchi
  • Publication number: 20130012104
    Abstract: The present invention has an object to remove effectively metallic contaminants adhering to the glass substrate surfaces without increasing roughness of the glass substrate surfaces in the glass substrate for a magnetic disk. In a manufacturing method of a glass substrate for a magnetic disk having a cleaning step of the glass substrate, cleaning step having a treatment of contacting the glass substrate with a cleaning liquid containing oxalate and divalent iron ions and having a pH of not less than 2 and not more than 4. The divalent iron ions are added by adding ammonium iron (II) sulfate, iron (II) sulfate and iron oxalate (II) to oxalic acid.
    Type: Application
    Filed: March 31, 2011
    Publication date: January 10, 2013
    Applicant: HOYA CORPORATION
    Inventors: Tomoyuki Yamaguchi, Yasunari Hirano, Takuhiro Hirakawa
  • Publication number: 20130008463
    Abstract: An object of the invention is to remove effectively metallic contaminants adhering to the glass substrate surfaces without increasing roughness of the glass substrate surfaces in the glass substrate for a magnetic disk. In a manufacturing method of a glass substrate for a magnetic disk, a cleaning step comprising a treatment of contacting the glass substrate with a cleaning liquid containing peroxodisulfate and having a pH of not less than 2 and not more than 4 is appended. In addition, an example of the cleaning liquid can be prepared by adding sodium peroxodisulfate to an acidic solution.
    Type: Application
    Filed: March 31, 2011
    Publication date: January 10, 2013
    Applicant: HOYA CORPORATION
    Inventors: Takuhiro Hirakawa, Yasunari Hirano, Kouichi Tamoto, Tomoyuki Yamaguchi
  • Publication number: 20120190606
    Abstract: An object of the invention is to remove effectively metallic contaminants adhering to the glass substrate surfaces without increasing roughness of the glass substrate surfaces in the glass substrate for a magnetic disk. In a manufacturing method of a glass substrate for a magnetic disk having a cleaning step of the glass substrate, the cleaning step comprising a cleaning treatment of contacting the glass substrate with an alkaline aqueous solution having a gluconate in concentration of not less than 0.05 wt % and not more than 2 wt % added thereto and a pH of not less than 9 and not more than 11 is appended.
    Type: Application
    Filed: March 31, 2011
    Publication date: July 26, 2012
    Applicant: HOYA CORPORATION
    Inventors: Takuhiro Hirakawa, Yasunari Hirano, Kouichi Tamoto, Tomoyuki Yamaguchi
  • Publication number: 20110283374
    Abstract: A heterologous chimeric animal can be produced by a method comprising the steps of: (A) injecting a stem cell into a blastocyst cavity in a blastocyst stage of an animal heterologous to that of the stem cell, or mixing the stem cell with a divided fertilized egg of the animal heterologous to that of the stem cell; and (B) growing a cell mass including the stem cell prepared in the step (A) into a chimeric animal between a species of the stem cell and a species of the heterologous animal.
    Type: Application
    Filed: January 29, 2010
    Publication date: November 17, 2011
    Applicants: INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Hiromitsu Nakauchi, Toshihiro Kobayashi, Tomoyuki Yamaguchi, Sanae Hamanaka, Masumi Hirabayashi, Megumi Kato
  • Publication number: 20110258715
    Abstract: It is revealed that an organ such as pancreas can be regenerated by utilizing a fact that the deficiency of an organ is complemented by injecting an induced pluripotent stem cell (iPS cell) into a developed blastocyst in a blastocyst complementation method. Thus, the present invention has solved the above-described object. This provides a method for producing a target organ, using an iPS cell, in a living body of a non-human mammal having an abnormality associated with a lack of development of the target organ in a development stage, the target organ produced being derived from a different individual mammal that is an individual different from the non-human mammal.
    Type: Application
    Filed: August 21, 2009
    Publication date: October 20, 2011
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Hiromitsu Nakauchi, Toshihiro Kobayashi, Tomoyuki Yamaguchi, Sanae Hamanaka
  • Publication number: 20100122360
    Abstract: An object of the present invention is to produce a mammalian organ having a complicated cellular composition composed of multiple kinds of cells, such as kidney, pancreas, thymus and hair, in the living body of a non-human animal. The inventors of the present invention applied the chimeric animal assay described above, to a novel solid organ production method. More specifically, the inventors has shown that a model mouse which is deficient of kidney, pancreas, thymus or hair due to the dysfunction of the metanephric mesenchyme that is differentiated into most of an adult kidney, is rescued by blastocyst complementation by the chimeric animal assay, and whereby a kidney, a pancreas, thymus or hair can be newly produced.
    Type: Application
    Filed: August 21, 2009
    Publication date: May 13, 2010
    Applicant: The University of Tokyo
    Inventors: Hiromitsu Nakauchi, Toshihiro Kobayashi, Younsu Lee, Joichi Usui, Tomoyuki Yamaguchi, Sanae Hamanaka
  • Publication number: 20090181012
    Abstract: An object of the present invention is to provide a technique to distinguish between Treg cells and activated T cells in a live state. Another object of the present invention is to provide a pharmaceutical composition for immunostimulation that can reduce the number of Treg cells in vivo and effectively express the immune response of activated T cells. In the method of the present invention, Treg cells are detected from test cells containing (i) regulatory T cells and (ii) at least one type of cell selected from the group consisting of naive T cells and activated T cells, wherein expressions of folate receptor 4 on the surfaces of cells are measured and Treg cells are detected using the expressions as an indicator. The present invention uses anti-folate receptor 4 antibody or folate receptor 4-binding fragment as an active ingredient contained in a pharmaceutical composition for immunostimulation.
    Type: Application
    Filed: December 19, 2008
    Publication date: July 16, 2009
    Applicants: KYOTO UNIVERSITY, RIKEN
    Inventors: Shimon SAKAGUCHI, Keiji Hirota, Tomoyuki Yamaguchi
  • Patent number: 7488474
    Abstract: An object of the present invention is to provide a technique to distinguish between Treg cells and activated T cells in a live state. Another object of the present invention is to provide a pharmaceutical composition for immunostimulation that can reduce the number of Treg cells in vivo and effectively express the immune response of activated T cells. In the method of the present invention, Treg cells are detected from test cells containing (i) regulatory T cells and (ii) at least one type of cell selected from the group consisting of naive T cells and activated T cells, wherein expressions of folate receptor 4 on the surfaces of cells are measured and Treg cells are detected using the expressions as an indicator. The present invention uses anti-folate receptor 4 antibody or folate receptor 4-binding fragment as an active ingredient contained in a pharmaceutical composition for immunostimulation.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: February 10, 2009
    Assignees: Kyoto University, Riken
    Inventors: Shimon Sakaguchi, Keiji Hirota, Tomoyuki Yamaguchi
  • Patent number: 7402772
    Abstract: Embodiments of the invention provide a laser processing apparatus and method. The laser processing apparatus includes a holder that holds a processing target, a first laser source that emits pulsed laser beam, and a second laser source that emits continuous-wave laser beam. The apparatus further includes an optical system that transmits the pulsed laser beam from the first laser source and the continuous-wave laser beam from the second laser source on a surface of the processing target held by the holder in such a manner that a beam spot of the pulsed laser beam is included inside a beam spot of the continuous-wave laser beam, and a moving mechanism that moves the beam spots of the pulsed laser beam and the continuous-wave laser beam on the surface of the processing target.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: July 22, 2008
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Shiro Hamada, Jiro Yamamoto, Tomoyuki Yamaguchi
  • Patent number: 7222784
    Abstract: A transmission base flow control device including a first credit counter, shared by an active system and a preparatory system of a reception device, managing a credit value of the active system; a second credit counter and a third credit counter counting the credit values for each system of the active system and the preparatory system of the reception device; a differential counter holding a difference between the credit value counted by the second credit counter and the credit value counted by the third credit counter; and a control unit matching, according to the difference held by the differential counter, the credit values of the first credit counter and the second credit counter or the credit values of the first credit counter and the third credit counter with a credit value corresponding to the reception device of a new active system after switching the system of the reception device.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: May 29, 2007
    Assignee: Fujitsu Limited
    Inventors: Tomoyuki Yamaguchi, Shinji Wakasa, Yasuyuki Mitsumori
  • Publication number: 20070062919
    Abstract: Laser beam is irradiated to a surface of a processing target after reforming a cross section of the laser beam with a mask having a pierced hole by concentrating the laser beam passing through the pierced hole by a lens to form an image of the pierced hole of the mask on the surface of the processing target. The laser beam passing through the lens is scanned to move an irradiating position of the laser beam on the surface of the processing target, and the image of the pierced hole of the mask is formed on the surface of the processing target during the scanning for processing the processing target. A high quality laser process can be carried out.
    Type: Application
    Filed: November 14, 2006
    Publication date: March 22, 2007
    Inventors: Shiro Hamada, Jiro Yamamoto, Tomoyuki Yamaguchi
  • Publication number: 20060246063
    Abstract: An object of the present invention is to provide a technique to distinguish between Treg cells and activated T cells in a live state. Another object of the present invention is to provide a pharmaceutical composition for immunostimulation that can reduce the number of Treg cells in vivo and effectively express the immune response of activated T cells. In the method of the present invention, Treg cells are detected from test cells containing (i) regulatory T cells and (ii) at least one type of cell selected from the group consisting of naive T cells and activated T cells, wherein expressions of folate receptor 4 on the surfaces of cells are measured and Treg cells are detected using the expressions as an indicator. The present invention uses anti-folate receptor 4 antibody or folate receptor 4-binding fragment as an active ingredient contained in a pharmaceutical composition for immunostimulation.
    Type: Application
    Filed: October 3, 2005
    Publication date: November 2, 2006
    Inventors: Shimon Sakaguchi, Keiji Hirota, Tomoyuki Yamaguchi
  • Publication number: 20060243714
    Abstract: A laser processing method has the steps of: (a) irradiating a laser beam from a laser source; and (b) applying the laser beam irradiated from the laser source to a first surface area of a processing object having a resin layer and a transparent conductive layer made of metal oxide and formed on the surface of the resin layer, to remove the transparent conductive layer and form a concave portion exposing the resist layer on the bottom of the first concave portion.
    Type: Application
    Filed: March 9, 2006
    Publication date: November 2, 2006
    Inventors: Shiro Hamada, Tomoyuki Yamaguchi, Jiro Yamamoto
  • Publication number: 20060077898
    Abstract: A transmission base flow control device performs data transmission/reception based on a packet form between a transmission device and a reception device having a redundant structure by utilizing a credit value to carry out a flow control of a credit base on a flow basis.
    Type: Application
    Filed: November 22, 2005
    Publication date: April 13, 2006
    Inventors: Tomoyuki Yamaguchi, Shinji Wakasa, Yasuyuki Mitsumori
  • Publication number: 20050155956
    Abstract: Laser beam is irradiated to a surface of a processing target after reforming a cross section of the laser beam with a mask having a pierced hole by concentrating the laser beam passing through the pierced hole by a lens to foreman image of the pierced hole of the mask on the surface of the processing target. The laser beam passing through the lens is scanned to move an irradiating position of the laser beam on the surface of the processing target, and the image of the pierced hole of the mask is formed on the surface of the processing target during the scanning for processing the processing target. A high quality laser process can be carried out.
    Type: Application
    Filed: February 25, 2005
    Publication date: July 21, 2005
    Inventors: Shiro Hamada, Jiro Yamamoto, Tomoyuki Yamaguchi
  • Patent number: 6856594
    Abstract: A method and system including ATM switching equipment provided for switching between a working channel and a protection channel in an ATM network. The method and system include the following processes: In each cell for transmission providing an indication of whether the cell belongs connection currently in a working state via a working channel; cells are duplicated on each connection basis; the duplicated cells are transmitted simultaneously on both a working channel and a protection channel; and valid cells are selected from received cells according to the indication in each cell indicating whether the relevant connection is currently in a working state.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: February 15, 2005
    Assignee: Fujitsu Limited
    Inventors: Naoki Aihara, Hichiro Hayami, Iwao Tada, Tomoyuki Yamaguchi