Patents by Inventor Nobuhiro Yasui

Nobuhiro Yasui 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: 11911877
    Abstract: An article including an inorganic compound according to the present invention includes a porous part and a no-porous frame body surrounding the porous part in a plane direction, and includes a stress relaxation part between the porous part and the frame body.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 27, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kanako Oshima, Nobuhiro Yasui, Hiroshi Saito, Yoshihiro Ohashi
  • Publication number: 20240034683
    Abstract: A powder that is heated by light, the powder comprising a silicon monoxide particle and another particle other than the silicon monoxide particle, wherein the another particle includes, at least one type of particle selected from the group including an aluminum oxide particle, a silicon dioxide particle, and an oxide particle which includes silicon and aluminum as elements, and wherein in a case where the another particle are converted into oxides represented by the Al2O3 and the SiO2, x, y, and z representing mass fractions of Al2O3, SiO2, and SiO, respectively, in an entirety of the powder satisfy relationships.
    Type: Application
    Filed: October 9, 2023
    Publication date: February 1, 2024
    Inventors: Shunsuke Murakami, YASUSHI SHIMIZU, NOBUHIRO YASUI, KANAKO OSHIMA
  • Publication number: 20240033968
    Abstract: A method of producing a manufactured object including forming the manufactured object by performing, once or a plurality of times, a step of forming a powder layer from material powders containing powders of an inorganic compound and a step of irradiating a predetermined region of a surface of the powder layer with an energy beam and thereby fusing/solidifying the material powders. In the step of fusing/solidifying the material powders, an amorphous-rich region and a crystalline-rich region are formed separately by changing at least one of an output of the energy beam, a relative position between the surface of the powder layer and a focus of the energy beam, and a scanning rate.
    Type: Application
    Filed: October 9, 2023
    Publication date: February 1, 2024
    Inventors: Kanako Oshima, Hisato Yabuta, Nobuhiro Yasui
  • Patent number: 11828889
    Abstract: A scintillator unit with less light leakage from a scintillator to an adhesive layer and a radiation detector that can improve sensitivity to radiation and the resolution of an image to be formed. Specifically disclosed is a scintillator unit including an adhesive layer between a scintillator and a supporting member and a low-refractive-index layer with a lower refractive index than the adhesive layer between the scintillator and the adhesive layer.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiro Ohashi, Satoshi Yamabi, Yoshinori Kotani, Nobuhiro Yasui
  • Patent number: 11813769
    Abstract: Provided is a method of producing a manufactured object including forming the manufactured object by performing, once or a plurality of times, a step of forming a powder layer from material powders containing powders of an inorganic compound and a step of irradiating a predetermined region of a surface of the powder layer with an energy beam and thereby fusing/solidifying the material powders. In the step of fusing/solidifying the material powders, an amorphous-rich region and a crystalline-rich region are formed separately by changing at least one of an output of the energy beam, a relative position between the surface of the powder layer and a focus of the energy beam, and a scanning rate.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: November 14, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kanako Oshima, Hisato Yabuta, Nobuhiro Yasui
  • Patent number: 11774605
    Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: October 3, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Saito, Nobuhiro Yasui, Yoshihiro Ohashi, Yoshinori Kotani, Satoshi Yamabi
  • Patent number: 11733402
    Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: August 22, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Saito, Nobuhiro Yasui, Yoshihiro Ohashi, Yoshinori Kotani, Satoshi Yamabi
  • Publication number: 20230255732
    Abstract: A dental prosthesis fabrication system includes: an intraoral information obtaining unit that obtains three-dimensional shape information of a tooth and color information of the tooth; a data generation unit that generates three-dimensional shape data and color data of the tooth based on the three-dimensional shape information of the tooth; a forming unit that forms a dental prosthesis based on the three-dimensional shape data of the tooth; and a coloring unit that applies color to a surface of the dental prosthesis based on the color data of the tooth.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Inventors: HIROSHI SAITO, KANAKO OSHIMA, NOBUHIRO YASUI
  • Patent number: 11718567
    Abstract: Provided are a powder for laser manufacturing which can be stably manufactured and from which a three-dimensional manufactured object ensuring a manufacturing accuracy can be obtained and a using method thereof. A powder for ceramic manufacturing for obtaining a manufactured object by repeatedly sintering or fusing and solidifying in sequence a powder in an irradiation portion with laser light, in which the powder includes a plurality of compositions, at least one composition of the compositions is an absorber that relatively strongly absorbs the laser light compared to other compositions, and at least a part of the absorber changes to a different composition that relatively weakly absorbs the laser light by irradiation with the laser light and a using method of a powder in which the powder is used.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 8, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuhiro Yasui, Hisato Yabuta, Kanako Oshima, Hiroshi Saito, Yoshihiro Ohashi, Makoto Kubota, Akira Uebayashi
  • Publication number: 20230021311
    Abstract: Provided are a powder for laser manufacturing which can be stably manufactured and from which a three-dimensional manufactured object ensuring a manufacturing accuracy can be obtained and a using method thereof. A powder for ceramic manufacturing for obtaining a manufactured object by repeatedly sintering or fusing and solidifying in sequence a powder in an irradiation portion with laser light, in which the powder includes a plurality of compositions, at least one composition of the compositions is an absorber that relatively strongly absorbs the laser light compared to other compositions, and at least a part of the absorber changes to a different composition that relatively weakly absorbs the laser light by irradiation with the laser light and a using method of a powder in which the powder is used.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 26, 2023
    Inventors: Nobuhiro Yasui, Hisato Yabuta, Kanako Oshima, Hiroshi Saito, Yoshihiro Ohashi, Makoto Kubota, Akira Uebayashi
  • Publication number: 20220379369
    Abstract: A casting core containing a ceramic and having sufficient mechanical strength to withstand a casting process over a long period of time and good solubility in alkaline solutions. The casting core includes a core, a surface layer, and an intermediate layer between the core and the surface layer. The intermediate layer has a lower relative density than the surface layer and the core.
    Type: Application
    Filed: April 6, 2022
    Publication date: December 1, 2022
    Inventors: Nobuhiro Yasui, Yasushi Shimizu, Shunsuke Murakami, Kanako Oshima
  • Patent number: 11440850
    Abstract: A material powder for additive modeling including a nitride, and a eutectic oxide, the nitride having an average density lower than an average density of the eutectic oxide, is used to produce a structure using an additive modeling method.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: September 13, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuhiro Yasui, Hisato Yabuta, Kanako Oshima
  • Patent number: 11401214
    Abstract: A material powder for additive modeling including a nitride, and a eutectic oxide, the nitride having an average density lower than an average density of the eutectic oxide, is used to produce a structure using an additive modeling method.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: August 2, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuhiro Yasui, Hisato Yabuta, Kanako Oshima
  • Publication number: 20220227021
    Abstract: (i) a step of disposing a powder that includes an absorber absorbing light of a wavelength included in a laser beam to be irradiated and silicon dioxide as a main component; (ii) a step of sintering or melting and solidifying the powder by irradiating the powder with a laser beam; and (iii) a step of heat-treating a shaped object formed by repeating the steps (i) and (ii) at 1470° C. or more and less than 1730° C.
    Type: Application
    Filed: April 7, 2022
    Publication date: July 21, 2022
    Inventors: Shunsuke Murakami, Yasushi Shimizu, Nobuhiro Yasui, Kanako Oshima
  • Publication number: 20220227670
    Abstract: A method for manufacturing a ceramic article including (i) a step of irradiating a powder mainly containing a ceramic material with an energy beam to sinter or melt and solidify the powder into a solidified portion, wherein the step is repeated a predetermined number of times to sequentially bond the resulting solidified portions together to obtain a ceramic modeling object, (ii) a step of allowing the shaped ceramic object to absorb a metal component-containing liquid that contains inorganic particles containing a metal element; and (iii) a step of heating the shaped ceramic object that has absorbed the metal component-containing liquid.
    Type: Application
    Filed: April 7, 2022
    Publication date: July 21, 2022
    Inventors: Kanako Oshima, Nobuhiro Yasui, Yasushi Shimizu, Yoshinori Kotani, Shunsuke Murakami
  • Publication number: 20220179105
    Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.
    Type: Application
    Filed: January 25, 2022
    Publication date: June 9, 2022
    Inventors: Hiroshi Saito, Nobuhiro Yasui, Yoshihiro Ohashi, Yoshinori Kotani, Satoshi Yamabi
  • Publication number: 20220146694
    Abstract: A scintillator unit with less light leakage from a scintillator to an adhesive layer and a radiation detector that can improve sensitivity to radiation and the resolution of an image to be formed. Specifically disclosed is a scintillator unit including an adhesive layer between a scintillator and a supporting member and a low-refractive-index layer with a lower refractive index than the adhesive layer between the scintillator and the adhesive layer.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Inventors: Yoshihiro Ohashi, Satoshi Yamabi, Yoshinori Kotani, Nobuhiro Yasui
  • Patent number: 11285661
    Abstract: A powder for ceramic shaping to be used for obtaining a structure by repeating the execution of a process of sequential melting and solidification by irradiation of a laser beam contains inorganic compound particles and an organic compound, the organic compound being provided on the surfaces of the inorganic compound particles, and the organic compound has an absorption band that overlaps the wavelength of the laser beam.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 29, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hisato Yabuta, Nobuhiro Yasui, Kanako Oshima, Akira Tsuboyama
  • Publication number: 20210362417
    Abstract: The packaged 3-dimensional modeling powder material, including 3-dimensional modeling powder material including plural types of particles, and a storage container configured to contain the modeling powder material in an inside of the storage container in a pressured state.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 25, 2021
    Inventors: Yasuhiro Sekine, Yasushi Shimizu, Nobuhiro Yasui, Shunsuke Murakami, Kanako Oshima
  • Publication number: 20210309575
    Abstract: Provided are a method of manufacturing a ceramic article including a porous portion in which improvement in mechanical strength of a modeled article is achieved while high modeling accuracy is obtained, and a ceramic article. The method of manufacturing a ceramic article includes the steps of: (i) irradiating powder of a metal oxide containing aluminum oxide as a main component with an energy beam based on modeling data to melt and solidify or sinter the powder, to thereby form a modeled article including a porous portion; (ii) causing the modeled article formed in the step (i) to absorb a liquid containing a zirconium component; and (iii) heating the modeled article that has absorbed the liquid containing the zirconium component, wherein, in the absorbing step, the liquid is absorbed so that a ratio of the zirconium component in a metal component contained in the porous portion becomes 0.3 to 2.0 mol %.
    Type: Application
    Filed: May 27, 2021
    Publication date: October 7, 2021
    Inventors: Yoshihiro Ohashi, Nobuhiro Yasui, Hiroshi Saito, Kanako Oshima