Patents by Inventor Toru Den

Toru Den 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: 20110223323
    Abstract: A process for producing a scintillator including the steps of producing a CsI columnar film formed of columnar CsI crystals by a deposition method, and adding an emission center to the CsI columnar film by disposing the CsI columnar film and an emission center material in a non-contact state in a closed space, heating the CsI columnar film in the range of not less than a sublimation temperature or evaporation temperature of the emission center material and not more than a temperature at which a columnar shape of the CsI columnar film can be maintained, and heating the emission center material at a temperature of not less than a sublimation temperature or evaporation temperature thereof.
    Type: Application
    Filed: February 15, 2011
    Publication date: September 15, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiro Ohashi, Nobuhiro Yasui, Toru Den
  • Patent number: 8009797
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 30, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • Publication number: 20110198228
    Abstract: The present invention provides a method of manufacturing a magnetic recording medium having high recording density. The magnetic recording medium manufacturing method of the present invention is directed to a manufacturing method including: disposing at least a silicon layer on a substrate; disposing an uneven structure including regularly arranged projections on the silicon layer; disposing magnetic material on the upper surfaces of the projections and within recessed parts of the uneven structure; and allowing the magnetic material disposed within each recessed part to be changed into silicon compound by heat treatment.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Saito, Toru Den
  • Patent number: 7998333
    Abstract: The present invention provides a method of manufacturing a magnetic recording medium having high recording density. The magnetic recording medium manufacturing method of the present invention is directed to a manufacturing method including: disposing at least a silicon layer on a substrate; disposing an uneven structure including regularly arranged projections on the silicon layer; disposing magnetic material on the upper surfaces of the projections and within recessed parts of the uneven structure; and allowing the magnetic material disposed within each recessed part to be changed into silicon compound by heat treatment.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: August 16, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Saito, Toru Den
  • Patent number: 7976761
    Abstract: A process for producing a patterned structure comprises imprinting a first pattern by pressing a stamper having a projection-depression configuration on the surface against an imprint-work layer, and imprinting a second pattern by displacing relatively the stamper from the position of the first pattern to another position on the imprint-work layer and then pressing the stamper against the imprint-work layer.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: July 12, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Aya Imada, Toru Den
  • Publication number: 20110158493
    Abstract: An analysis method for use in a radiation imaging apparatus employing intensity information of interference fringes of radiation rays that have passed through a detected object includes the steps of generating first phase information of the detected object wrapped into a range of 2? from the intensity information of the interference fringes; generating information on an absorption intensity gradient of the detected object from the intensity information of the interference fringes; generating a weighting function on the basis of an absolute value of a gradient in the information on the absorption intensity gradient; and generating second phase information by unwrapping the first phase information by using the weighting function.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 30, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kentaro Nagai, Toru Den
  • Patent number: 7956346
    Abstract: A light emitting device includes a substrate, a first electrode layer, a light emitting layer, a structure layer and a second electrode layer. The structure layer has first domains composed of a first material having a columnar shape and second domains composed of a second material, and on the substrate the structure layer and the light emitting layer are laminated between the first electrode layer and the second electrode layer.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: June 7, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Iwasaki, Toru Den
  • Patent number: 7916283
    Abstract: A biological information imaging apparatus includes: a light source; an acoustic wave detector that detects an acoustic wave generated from a light absorption material in a living body that has absorbed a part of energy of light irradiated from the light source to the living body, and converts it into a first electric signal; a photodetector that detects optical intensity of a portion of the light irradiated from the light source to the living body and propagating in the living body, and converts it into a second electric signal; and a calculation unit that calculates optical property distribution information on the living body by making use of an analytical result of one of the first electric signal and the second electric signal for analysis of the other electric signal.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: March 29, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Fukutani, Takao Nakajima, Yasufumi Asao, Toru Den
  • Patent number: 7901737
    Abstract: A magnetic recording medium is provided which is contaminated less and improved in magnetic properties. The process for producing a magnetic recording medium having a recording layer constituted of magnetic granule portions dispersed in a nonmagnetic matrix portion comprises a first step of forming, on a base body, a nonmagnetic matrix portion, and Cu or Ag granule portions dispersed therein by a gas-phase deposition method, a second step of laminating magnetic granule portions on the Cu or Ag granule portions and laminating an additional nonmagnetic matrix portion on the nonmagnetic matrix portion formed in the first step, and a third step of heat-treating the laminate.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: March 8, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiro Yasui, Toru Den
  • Patent number: 7888684
    Abstract: There has not been a DC drive type light emitting device capable of providing high brightness. The present invention provides a light emitting device, including: a pair of electrodes; a light emitter placed between the electrodes; and a semiconductor laminated to be adjacent to the light emitter, in which the semiconductor contains one of a chalcopyrite and an oxychalcogenide.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: February 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Oike, Tatsuya Iwasaki, Toru Den
  • Patent number: 7864307
    Abstract: A biological information imaging apparatus includes: a light source; an acoustic wave detector that detects an acoustic wave generated from a light absorption material in a living body that has absorbed a part of energy of light irradiated from the light source to the living body, and converts it into a first electric signal; a photodetector that detect optical intensity of a portion of the light irradiated from the light source to the living body and propagating in the living body, and converts it into a second electric signal; and a calculation unit that calculates optical property distribution information on the living body by making use of an analytical result of one of the first electric signal and the second electric signal for analysis of the other electric signal.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: January 4, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Fukutani, Takao Nakajima, Yasufumi Asao, Toru Den
  • Publication number: 20100331707
    Abstract: A biological information imaging apparatus includes: a light source; an acoustic wave detector that detects an acoustic wave generated from a light absorption material in a living body that has absorbed a part of energy of light irradiated from the light source to the living body, and converts it into a first electric signal; a photodetector that detects optical intensity of a portion of the light irradiated from the light source to the living body and propagating in the living body, and converts it into a second electric signal; and a calculation unit that calculates optical property distribution information on the living body by making use of an analytical result of one of the first electric signal and the second electric signal for analysis of the other electric signal.
    Type: Application
    Filed: September 7, 2010
    Publication date: December 30, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiko Fukutani, Takao Nakajima, Yasufumi Asao, Toru Den
  • Publication number: 20100290590
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Application
    Filed: July 23, 2010
    Publication date: November 18, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • Publication number: 20100260315
    Abstract: A source grating for a Talbot-Lau-type interferometer includes a plurality of channels having incident apertures provided on a side irradiated with X-rays and exit apertures provided on an opposite side of the side irradiated with the X-rays; the exit apertures of the channels have an aperture area smaller than an aperture area of the incident apertures; and the exit apertures of the channels are arranged so that interference fringes of Talbot self-images formed by X-rays exiting from the exit apertures of the adjacent channels are aligned with each other.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Genta Sato, Toru Den
  • Patent number: 7794861
    Abstract: To provide patterned media having novel structure. Plural convex members 2991 are provided in an array form on a substrate 2990. The convex member has a shape such that the cross section at each plane in parallel to the substrate tapers toward the substrate. Magnetic recording layers 2992 are provided on upper parts 2993 of the convex members so that they are not in contact with each other between the adjacent upper surface parts.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: September 14, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Saito, Takashi Nakamura, Shigeru Ichihara, Toru Den, Aya Imada, Nobuhiro Yasui
  • Patent number: 7771791
    Abstract: Disclosed herein is a process for producing a structured material, comprising the steps of forming a film on a substrate, forming a plurality of holes in a first region of the film, forming a plurality of holes composed of a hole wall member different from a hole wall member of the holes contained in the first region in a second region other than the first region, filling the holes in the first and second regions with the same material, and modifying the material in at least one region of the first and second regions by a heat treatment.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: August 10, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Miki Ueda, Shigeru Ichihara, Toru Den
  • Patent number: 7768031
    Abstract: To provide a DC drive type inorganic light emitting device excellent in luminous efficiency, provided is a light emitting device, including: a substrate; and a first layer and a second layer laminated on the substrate, in which the second layer is formed of a first portion containing Zn and at least one element chosen from S and Se as its constituent elements; and a second portion containing at least one element chosen from Cu and Ag and at least one element chosen from S and Se as its constituent elements; the first layer is made of a light emitting layer formed of at least one element chosen from S and Se and of Zn; and, in the second layer, the second portion has a cross section parallel to the substrate which tapers toward the first layer.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 3, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naho Itagaki, Tomoyuki Oike, Tatsuya Iwasaki, Toru Den
  • Publication number: 20100109002
    Abstract: Provided is an oxynitride semiconductor comprising a metal oxynitride. The metal oxynitride contains Zn and at least one element selected from the group consisting of In, Ga, Sn, Mg, Si, Ge, Y, Ti, Mo, W, and Al. The metal oxynitride has an atomic composition ratio of N, N/(N+O), of 7 atomic percent or more to 80 atomic percent or less.
    Type: Application
    Filed: April 23, 2008
    Publication date: May 6, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naho Itagaki, Tatsuya Iwasaki, Masatoshi Watanabe, Toru Den
  • Patent number: 7700219
    Abstract: The present invention provides a new method for producing a structure having a three-dimensional network skeleton. The method includes providing a film including a first material and a second material and removing the second material contained in the film by dry etching. The first material contains a noble metal and is dispersed in the second material.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: April 20, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoko Horie, Hiroshi Okura, Nobuhiro Yasui, Toru Den
  • Patent number: 7690910
    Abstract: A mold for imprint capable of forming a reduced seam or seamless pattern, on a surface of a substrate, having larger area than that of the mold includes a first pattern area comprising a plurality of first recesses; and a second pattern area, comprising a plurality of second recesses, for being used as an alignment mark. The first pattern area and the second pattern area have an equal height at their outermost surfaces. The first recesses and the second recesses have different depths. The first pattern area and the second pattern area have an equal cyclic interval.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: April 6, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Nakamura, Toru Den