Patents by Inventor Akitoshi Yoshida

Akitoshi Yoshida 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: 10980416
    Abstract: A blood flow measurement apparatus of an embodiment includes an image acquisition unit, an image region specification unit, a measurement location setting unit, a scanner, and a blood flow information generation unit. The image acquisition unit acquires an image of a living body. The image region specification unit analyzes the image to specify a plurality of blood vessel regions. The measurement location setting unit sets a plurality of measurement locations that intersects with the plurality of blood vessel regions. The scanner scans a plurality of cross sections of the living body corresponding to the plurality of measurement locations using optical coherence tomography. The blood flow information generation unit generates blood flow information on the living body based on data acquired through the scan.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: April 20, 2021
    Assignees: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, KABUSHIKI KAISHA TOPCON
    Inventors: Akitoshi Yoshida, Masahiro Akiba
  • Publication number: 20190010450
    Abstract: The present invention relates to an isolated mesenchymal stem cell-like human multipotent stem cell population characterized by being EphA7 positive, medical materials containing the cell population, and a method for producing the cell population comprising separating EphA7-positive cells from adherent cells derived from a tissue comprising capillary vessels.
    Type: Application
    Filed: July 29, 2016
    Publication date: January 10, 2019
    Applicants: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Junichi KAWABE, Taiji NAGAOKA, Akitoshi YOSHIDA, Naoyuki HASEBE
  • Publication number: 20180279874
    Abstract: A blood flow measurement apparatus of an embodiment includes an image acquisition unit, an image region specification unit, a measurement location setting unit, a scanner, and a blood flow information generation unit. The image acquisition unit acquires an image of a living body. The image region specification unit analyzes the image to specify a plurality of blood vessel regions. The measurement location setting unit sets a plurality of measurement locations that intersects with the plurality of blood vessel regions. The scanner scans a plurality of cross sections of the living body corresponding to the plurality of measurement locations using optical coherence tomography. The blood flow information generation unit generates blood flow information on the living body based on data acquired through the scan.
    Type: Application
    Filed: November 2, 2015
    Publication date: October 4, 2018
    Applicants: NATIONAL UNIVERSITY CORPORATION ASAHIKAWA MEDICAL UNIVERSITY, KABUSHIKI KAISHA TOPCON
    Inventors: Akitoshi YOSHIDA, Masahiro AKIBA
  • Patent number: 9936870
    Abstract: In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image. The display performs the same change as the change to the change operation to the cross sectional image, the phase image and the blood flow image.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: April 10, 2018
    Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERITY
    Inventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
  • Patent number: 9848772
    Abstract: In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image that expresses multiple blood flow information. The display performs the same change as the change to the cross sectional image, the phase image and the blood flow image.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: December 26, 2017
    Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITY
    Inventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
  • Patent number: 9676966
    Abstract: To provide a polishing slurry composition which effectively reduces the occurrence of scratches, and a method of polishing which reduces the occurrence of scratches while realizing an economical polishing step. The aforementioned object is attained by using a polishing slurry composition for polishing a semiconductor substrate containing a metal oxide particle, at least one water-soluble organic polymer and water, said slurry composition characterized in that, when a test substrate having a metal film, a shallow trench isolation film or dielectric film is polished by varying a rate of a polishing pad equipped in a polishing apparatus under a constant polishing pressure to achieve a maximum polishing rate.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: June 13, 2017
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Haruki Nojo, Akitoshi Yoshida, Hirofumi Kashihara, Pascal Berar
  • Patent number: 9492082
    Abstract: An optical system splits light into signal light and reference light and detects interference light between scattered light of signal light from living body and reference light. A scanner performs first scan in which first cross section that intersects interested blood vessel is repeatedly scanned with signal light. An image forming part forms first cross sectional image expressing chronological variation of morphology of first cross section and phase image expressing chronological variation of phase difference based on detection results of interference light acquired during first scan. A blood vessel region specifying part specifies blood vessel region corresponding to interested blood vessel for first cross sectional image and phase image. A blood flow information generator generates blood flow information related to interested blood vessel based on blood vessel region of first cross sectional image and chronological variation of phase difference within blood vessel region of phase image.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: November 15, 2016
    Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITY
    Inventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
  • Publication number: 20160310024
    Abstract: In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image that expresses multiple blood flow information. The display performs the same change as the change to the cross sectional image, the phase image and the blood flow image.
    Type: Application
    Filed: June 29, 2016
    Publication date: October 27, 2016
    Applicants: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITY
    Inventors: Akitoshi Yoshida, Masahiro AKIBA, Yasufumi FUKUMA, Hideaki TOKORO, Taiki AIMI, Shunsuke NAKAMURA
  • Publication number: 20160302738
    Abstract: In an embodiment, cross sectional image storage stores a cross sectional image group including multiple cross sectional images each of which is associated with time. Phase image storage stores a phase image group including multiple phase images each of which is associated with time. Blood flow information storage stores a blood flow information group including multiple blood flow information each of which is related to blood flow in a blood vessel of the living body and is associated with time. Display synchronously displays a cross sectional image included in the cross sectional image group and a phase image included in the phase image group using time associated with the cross sectional image and the phase image, and displays a blood flow image. The display performs the same change as the change to the change operation to the cross sectional image, the phase image and the blood flow image.
    Type: Application
    Filed: June 29, 2016
    Publication date: October 20, 2016
    Applicants: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITY
    Inventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
  • Publication number: 20150313466
    Abstract: An optical system splits light into signal light and reference light and detects interference light between scattered light of signal light from living body and reference light. A scanner performs first scan in which first cross section that intersects interested blood vessel is repeatedly scanned with signal light. An image forming part forms first cross sectional image expressing chronological variation of morphology of first cross section and phase image expressing chronological variation of phase difference based on detection results of interference light acquired during first scan. A blood vessel region specifying part specifies blood vessel region corresponding to interested blood vessel for first cross sectional image and phase image. A blood flow information generator generates blood flow information related to interested blood vessel based on blood vessel region of first cross sectional image and chronological variation of phase difference within blood vessel region of phase image.
    Type: Application
    Filed: March 8, 2013
    Publication date: November 5, 2015
    Applicants: Kabushiki Kaisha Topcon, National University Corporation Asahikawa Medical University
    Inventor: Akitoshi YOSHIDA
  • Patent number: 8621588
    Abstract: With a terminal apparatus that includes an authentication method deciding unit that selects one of two or more authentication methods according to acquired position information, an authentication screen output unit that outputs a screen corresponding to the one authentication method, an accepting unit that accepts authentication information that is input on that screen, an authentication information sending unit that sends an authentication method identifier that identifies an authentication method and the authentication information to a server, an output information receiving unit that receives, from the server, one or more pieces of output information corresponding to the authentication method identification information in the case of success of authentication, and an output information output unit that outputs output information, information necessary for medical practice can be acquired while appropriately securing the privacy of a patient.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: December 31, 2013
    Assignee: National University Corporation Asahikawa Medical University
    Inventor: Akitoshi Yoshida
  • Publication number: 20120102559
    Abstract: With a terminal apparatus that includes an authentication method deciding unit that selects one of two or more authentication methods according to acquired position information, an authentication screen output unit that outputs a screen corresponding to the one authentication method, an accepting unit that accepts authentication information that is input on that screen, an authentication information sending unit that sends an authentication method identifier that identifies an authentication method and the authentication information to a server, an output information receiving unit that receives, from the server, one or more pieces of output information corresponding to the authentication method identification information in the case of success of authentication, and an output information output unit that outputs output information, information necessary for medical practice can be acquired while appropriately securing the privacy of a patient.
    Type: Application
    Filed: June 14, 2010
    Publication date: April 26, 2012
    Inventor: Akitoshi Yoshida
  • Patent number: 8057039
    Abstract: A fundus imaging apparatus comprises: an irradiation optical system comprising a light source which emits a laser beam and a scanner which two-dimensionally scans the laser beam on a fundus of an examinee's eye, the irradiation optical system being adapted to focus the laser beam emitted from the light source on the fundus to form a confocal region; an imaging optical system comprising a photo-receiving element which receives reflection light of the laser beam reflected from the fundus, the imaging optical system being adapted to focus the reflection light from the fundus and receive the reflection light by the photo-receiving element; and a beam restriction member placed in an optical path of the imaging optical system, the beam restriction member comprising: one of an opening through which part of the reflection light from the fundus outside the confocal region is allowed to pass toward the photo-receiving element and a mirror part which reflects the part of the reflection light from the fundus outside the
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 15, 2011
    Assignee: Nidek Co., Ltd.
    Inventors: Junichi Akita, Akitoshi Yoshida, Satoshi Ishiko
  • Publication number: 20090197412
    Abstract: To provide a polishing slurry composition which effectively reduces the occurrence of scratches, and a method of polishing which reduces the occurrence of scratches while realizing an economical polishing step. The aforementioned object is attained by using a polishing slurry composition for polishing a semiconductor substrate containing a metal oxide particle, at least one water-soluble organic polymer and water, said slurry composition characterized in that, when a test substrate having a metal film, a shallow trench isolation film or dielectric film is polished by varying a rate of a polishing pad equipped in a polishing apparatus under a constant polishing pressure to achieve a maximum polishing rate.
    Type: Application
    Filed: November 13, 2003
    Publication date: August 6, 2009
    Inventors: Haruki Nojo, Akitoshi Yoshida, Hirofumi Kashihara, Pascal Berar
  • Publication number: 20090086164
    Abstract: A fundus imaging apparatus comprises: an irradiation optical system comprising a light source which emits a laser beam and a scanner which two-dimensionally scans the laser beam on a fundus of an examinee's eye, the irradiation optical system being adapted to focus the laser beam emitted from the light source on the fundus to form a confocal region; an imaging optical system comprising a photo-receiving element which receives reflection light of the laser beam reflected from the fundus, the imaging optical system being adapted to focus the reflection light from the fundus and receive the reflection light by the photo-receiving element; and a beam restriction member placed in an optical path of the imaging optical system, the beam restriction member comprising: one of an opening through which part of the reflection light from the fundus outside the confocal region is allowed to pass toward the photo-receiving element and a mirror part which reflects the part of the reflection light from the fundus outside the
    Type: Application
    Filed: September 25, 2008
    Publication date: April 2, 2009
    Applicant: NIDEK CO., LTD.
    Inventors: Junichi Akita, Akitoshi Yoshida, Satoshi Ishiko
  • Patent number: 6827752
    Abstract: A problem to be solved is to provide a slurry that is capable of flattening an uneven film on a substrate with good precision, and that has good stability, not separating into two layers, solidifying through flocculated settling or undergoing changes in viscosity. This problem is solved by adding poly ammonium acrylates having different degrees of neutralization to one another as surfactants to a cerium oxide slurry containing cerium oxide particles, and suitably adjusting the total amount of polyacrylates added.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: December 7, 2004
    Assignee: EKC Technology K.K.
    Inventors: Haruki Nojo, Akitoshi Yoshida, Pascal Berar
  • Publication number: 20030182868
    Abstract: A problem to be solved is to provide a slurry that is capable of flattening an uneven film on a substrate with good precision, and that has good stability, not separating into two layers, solidifying through flocculated settling or undergoing changes in viscosity. This problem is solved by adding poly ammonium acrylates having different degrees of neutralization to one another as surfactants to a cerium oxide slurry containing cerium oxide particles, and suitably adjusting the total amount of polyacrylates added.
    Type: Application
    Filed: March 12, 2003
    Publication date: October 2, 2003
    Inventors: Haruki Nojo, Akitoshi Yoshida, Pascal Berar
  • Patent number: 6530706
    Abstract: A paper feed unit has a paper feed tray stacking sheets thereon, a primary paper feed roller and a secondary paper feed member, wherein an uppermost sheet among the sheets stacked on the paper feed tray is transferred toward the secondary paper feed member from the primary paper feed roller, a tip end of the sheet then contacts with the secondary paper feed member, and primary paper feed is then completed while the sheet is being bent. A counter rotation stop mechanism, which allows the primary paper feed roller to rotate in a paper feed direction but prevents the primary paper feed roller from rotating in a counter direction to the paper feed direction, and a rotation stop release mechanism, which releases a state in which the primary paper feed roller is prevented from rotating in the counter direction by the counter rotation stop mechanism, are also provided.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: March 11, 2003
    Assignee: Riso Kagaku Corporation
    Inventors: Hiroyuki Sugimoto, Akitoshi Yoshida
  • Publication number: 20010043831
    Abstract: A paper feed unit has a paper feed tray stacking sheets thereon, a primary paper feed roller and a secondary paper feed member, wherein an uppermost sheet among the sheets stacked on the paper feed tray is transferred toward the secondary paper feed member from the primary paper feed roller, a tip end of the sheet then contacts with the secondary paper feed member, and primary paper feed is then completed while the sheet is being bent. A counter rotation stop mechanism, which allows the primary paper feed roller to rotate in a paper feed direction but prevents the primary paper feed roller from rotating in a counter direction to the paper feed direction, and a rotation stop release mechanism, which releases a state in which the primary paper feed roller is prevented from rotating in the counter direction by the counter rotation stop mechanism, are also provided.
    Type: Application
    Filed: April 26, 2001
    Publication date: November 22, 2001
    Inventors: Hiroyuki Sugimoto, Akitoshi Yoshida
  • Patent number: 6300249
    Abstract: The present invention is a polishing compound comprising a colloidal solution containing 1˜15 wt. % of silicon oxide particles of 8˜500 nanometer average diameter, wherein said colloidal solution is prepared as a buffer solution which has buffering action between pH 8.7˜10.6 by the addition of one combination selected from groups composed by weak acid and strong base, strong acid and weak base or weak acid and weak base, and logarithms of reciprocal number of acid dissociation constant at 25° C. of said weak acid and/or weak base is 8.0˜12.0.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 9, 2001
    Assignee: SpeedFam Co Ltd
    Inventors: Akitoshi Yoshida, Yoshihisa Ogawa, Hiroaki Tanaka