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).
-
Publication number: 20230218165Abstract: A medical system of an aspect example includes a data acquiring unit and a data processor. The data acquiring unit is configured to acquire data from an eye fundus of a patient using at least one optical method. The data processor is configured to process the data acquired by the data acquiring unit in order to generate information on the circulatory system of the patient.Type: ApplicationFiled: September 21, 2021Publication date: July 13, 2023Applicants: Topcon Corporation, National University Corporation Asahikawa Medical UniversityInventors: Kana MINAMIDE, Masahiro AKIBA, Jun SAKAI, Akitoshi YOSHIDA
-
Publication number: 20210386290Abstract: The blood flow analysis apparatus includes an acquisition unit and an extractor. The acquisition unit is configured to acquire blood flow information representing time-course changes in a blood flow velocity of a single retinal artery or retinal vein. The extractor is configured to extract one or more parameters corresponding to change in the blood flow velocity from the blood flow information.Type: ApplicationFiled: May 13, 2021Publication date: December 16, 2021Applicants: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, Topcon CorporationInventors: Akitoshi YOSHIDA, Kana MINAMIDE, Masahiro AKIBA, Jun SAKAI
-
Patent number: 10980416Abstract: 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: GrantFiled: November 2, 2015Date of Patent: April 20, 2021Assignees: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, KABUSHIKI KAISHA TOPCONInventors: Akitoshi Yoshida, Masahiro Akiba
-
Publication number: 20190010450Abstract: 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: ApplicationFiled: July 29, 2016Publication date: January 10, 2019Applicants: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY, DAIICHI SANKYO COMPANY, LIMITEDInventors: Junichi KAWABE, Taiji NAGAOKA, Akitoshi YOSHIDA, Naoyuki HASEBE
-
Publication number: 20180279874Abstract: 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: ApplicationFiled: November 2, 2015Publication date: October 4, 2018Applicants: NATIONAL UNIVERSITY CORPORATION ASAHIKAWA MEDICAL UNIVERSITY, KABUSHIKI KAISHA TOPCONInventors: Akitoshi YOSHIDA, Masahiro AKIBA
-
Patent number: 9936870Abstract: 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: GrantFiled: June 29, 2016Date of Patent: April 10, 2018Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERITYInventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
-
Patent number: 9848772Abstract: 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: GrantFiled: June 29, 2016Date of Patent: December 26, 2017Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITYInventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
-
Patent number: 9676966Abstract: 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: GrantFiled: November 13, 2003Date of Patent: June 13, 2017Assignee: Air Products and Chemicals, Inc.Inventors: Haruki Nojo, Akitoshi Yoshida, Hirofumi Kashihara, Pascal Berar
-
Patent number: 9492082Abstract: 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: GrantFiled: March 8, 2013Date of Patent: November 15, 2016Assignees: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITYInventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
-
Publication number: 20160310024Abstract: 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: ApplicationFiled: June 29, 2016Publication date: October 27, 2016Applicants: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITYInventors: Akitoshi Yoshida, Masahiro AKIBA, Yasufumi FUKUMA, Hideaki TOKORO, Taiki AIMI, Shunsuke NAKAMURA
-
Publication number: 20160302738Abstract: 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: ApplicationFiled: June 29, 2016Publication date: October 20, 2016Applicants: KABUSHIKI KAISHA TOPCON, National University Corporation ASAHIKAWA MEDICAL UNIVERSITYInventors: Akitoshi Yoshida, Masahiro Akiba, Yasufumi Fukuma, Hideaki Tokoro, Taiki Aimi, Shunsuke Nakamura
-
Publication number: 20150313466Abstract: 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: ApplicationFiled: March 8, 2013Publication date: November 5, 2015Applicants: Kabushiki Kaisha Topcon, National University Corporation Asahikawa Medical UniversityInventor: Akitoshi YOSHIDA
-
Patent number: 8621588Abstract: 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: GrantFiled: June 14, 2010Date of Patent: December 31, 2013Assignee: National University Corporation Asahikawa Medical UniversityInventor: Akitoshi Yoshida
-
Publication number: 20120102559Abstract: 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: ApplicationFiled: June 14, 2010Publication date: April 26, 2012Inventor: Akitoshi Yoshida
-
Patent number: 8057039Abstract: 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 theType: GrantFiled: September 25, 2008Date of Patent: November 15, 2011Assignee: Nidek Co., Ltd.Inventors: Junichi Akita, Akitoshi Yoshida, Satoshi Ishiko
-
Publication number: 20090197412Abstract: 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: ApplicationFiled: November 13, 2003Publication date: August 6, 2009Inventors: Haruki Nojo, Akitoshi Yoshida, Hirofumi Kashihara, Pascal Berar
-
Publication number: 20090086164Abstract: 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 theType: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: NIDEK CO., LTD.Inventors: Junichi Akita, Akitoshi Yoshida, Satoshi Ishiko
-
Patent number: 6827752Abstract: 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: GrantFiled: March 12, 2003Date of Patent: December 7, 2004Assignee: EKC Technology K.K.Inventors: Haruki Nojo, Akitoshi Yoshida, Pascal Berar
-
Publication number: 20030182868Abstract: 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: ApplicationFiled: March 12, 2003Publication date: October 2, 2003Inventors: Haruki Nojo, Akitoshi Yoshida, Pascal Berar
-
Patent number: 6530706Abstract: 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: GrantFiled: April 26, 2001Date of Patent: March 11, 2003Assignee: Riso Kagaku CorporationInventors: Hiroyuki Sugimoto, Akitoshi Yoshida