Patents by Inventor Hirokazu Usami

Hirokazu Usami 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: 11052609
    Abstract: A molding system to manufacture a three-dimensional object corresponding to a three-dimensional model. The molding apparatus includes a slice data generation unit to generate slice data from three-dimensional shape data of the three-dimensional model, and a lamination unit to laminate a layer of a molding material on the basis of the slice data. The slice data generation unit analyzes data, and, if a region in which a layer of a second molding material different from a first molding material is to be laminated on a layer of the first molding material and in which it is difficult to laminate the layers is extracted, modifies the data of a region of at least one of an ith layer and an (i+1)th layer to data in which a portion in which the first molding material is disposed and a portion in which the second molding material is disposed.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 6, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
  • Patent number: 11020520
    Abstract: The present invention is a sterile peritoneal dialysis fluid, including an acidic first liquid containing only icodextrin and 0 to 2.34 g/L of sodium chloride, and an alkaline second liquid containing an alkaline pH regulator, in which the first liquid after sterilization has a pH of 5.0 to 5.5, the second liquid after sterilization has a pH of 6.5 to 7.5, and a mixture of the first liquid and the second liquid after sterilization has a pH of 6.0 to 7.5. The present invention can provide a peritoneal dialysis fluid containing icodextrin, in which the stability of icodextrin during the heat sterilization and the subsequent storage can be improved to the maximum, and the pH of the peritoneal dialysis fluid is close to the physiological range.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: June 1, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Hiroshi Nishitani, Hirokazu Usami, Yoshihiko Koyama, Tsuyoshi Ariizumi
  • Publication number: 20210114107
    Abstract: According to the present invention, it is provided a shaping method including a formation step of forming a powder layer using a first powder, an arrangement step of arranging a second powder having an average particle diameter smaller than that of the first powder in a partial region of the powder layer, and a first heating step of heating the powder layer on which the second powder has been arranged at a temperature at which particles contained in the second powder are sintered or melted. When a compressive strength of the powder layer in the partial region after the first heating step is denoted by P1 and a compressive strength of the first powder outside the partial region is denoted by P2, a relationship of P1?0.5 MPa>P2 is established.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Inventors: Hirokazu Usami, Akira Sugiyama
  • Publication number: 20200384535
    Abstract: A three-dimensional shaping method for forming a shaped object using a powder made up of first particles, on a vertically movable shaping stage within a shaping container, the method includes a step of forming a powder layer made up of the first particles, on the shaping stage on which second particles that have a larger particle size than a particle size of each of the first particles are disposed along a gap between the shaping container and the shaping stage. R1 is an average particle size of the first particles, R2 is an average particle size of the second particles and d is a distance of the gap between the shaping container and the shaping stage. Expression (1) is satisfied: R1?d<R2?? (1).
    Type: Application
    Filed: June 3, 2020
    Publication date: December 10, 2020
    Inventors: Hirokazu Usami, Soma Nakai, Takashi Yoshida
  • Publication number: 20200101213
    Abstract: Provided is a sterilized peritoneal dialysis solution which includes an acidic first solution containing icodextrin and a second solution containing 300 to 3,000 mg/L of L-histidine and a pH controlling agent, in which the first solution contains no pH controlling agent, a pH of the first solution after sterilization is 4.0 to 5.3, a pH of the second solution after sterilization is 6.5 to 8.0, and a pH after mixing the first solution and the second solution after sterilization is 6.5 to 7.5.
    Type: Application
    Filed: February 16, 2018
    Publication date: April 2, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Hirokazu USAMI, Hiroshi NISHITANI, Tsuyoshi ARIIZUMI
  • Publication number: 20200086559
    Abstract: An object shaping method includes a step of forming a powder layer using first powder, a step of placing second powder having an average particle diameter smaller than an average particle diameter of the first powder at a part of a region of the powder layer, and a first heating step of heating the powder layer in which the second powder is placed. The average particle diameter is equal to or larger than 1 nm and equal to or smaller than 500 nm, and the first heating step performs heating the powder layer at a temperature at which particles contained in the second powder are sintered or melted.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Akira Sugiyama, Hirokazu Usami, Yohei Masada, Takaharu Aotani
  • Patent number: 10357956
    Abstract: A shaping apparatus includes a storage section that stores in advance a first relationship between a temperature of a shaping material and a heating time at a time at which oxidation of the shaping material starts as the shaping material is heated; and a control section that estimates a timing at which the oxidation of a material layer starts, based on an acquisition result from a temperature acquisition section, a measurement result from a time measurement section, and the first relationship stored in the storage section when the material layer on a conveyance body is preheated by a preheating section, and reduces a front surface temperature of the material layer on the conveyance body before the oxidation of the material layer starts.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: July 23, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
  • Publication number: 20190056688
    Abstract: Occurrence of layering defects is suppressed in a layering forming method where material layers on a conveyance member are heated and layered. A forming apparatus 1 configured to sequentially layer a plurality of material layers and form a three-dimensional object includes a stage having a forming face on which the material layers are layered, a conveyance member configured to support and convey the material layers to a layering position facing the forming face, and a heating member configured to nip the material layers between itself and the forming face of the stage at the layering position, and pressurize and heat the material layer. When a heating region of the heating member is perpendicularly projected onto a plane where a supporting face at which the conveyance member supports the material layer exists, a projection plane of the heating region has extending regions that extend further to the outer side from both edges of the supporting face, on both edges of the projection plane of the heating region.
    Type: Application
    Filed: October 23, 2018
    Publication date: February 21, 2019
    Inventors: Yuji Wakabayashi, Tatsuya Tada, Hirokazu Usami, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka
  • Publication number: 20190001578
    Abstract: A molding system to manufacture a three-dimensional object corresponding to a three-dimensional model. The molding apparatus includes a slice data generation unit to generate slice data from three-dimensional shape data of the three-dimensional model, and a lamination unit to laminate a layer of a molding material on the basis of the slice data. The slice data generation unit analyzes data, and, if a region in which a layer of a second molding material different from a first molding material is to be laminated on a layer of the first molding material and in which it is difficult to laminate the layers is extracted, modifies the data of a region of at least one of an ith layer and an (i+1)th layer to data in which a portion in which the first molding material is disposed and a portion in which the second molding material is disposed.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 3, 2019
    Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
  • Publication number: 20180296593
    Abstract: The present invention is a sterile peritoneal dialysis fluid, including an acidic first liquid containing 60.0 to 94.0 g/L of icodextrin and 0 to 2.34 g/L of sodium chloride, and an alkaline second liquid containing an alkaline pH regulator, in which the first liquid after sterilization has a pH of 5.0 to 5.5, the second liquid after sterilization has a pH of 6.5 to 7.5, and a mixture of the first liquid and the second liquid after sterilization has a pH of 6.0 to 7.5. The present invention can provide a peritoneal dialysis fluid containing icodextrin, in which the stability of icodextrin during the heat sterilization and the subsequent storage can be improved to the maximum, and the pH of the peritoneal dialysis fluid is close to the physiological range.
    Type: Application
    Filed: June 26, 2018
    Publication date: October 18, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Hirokazu USAMI, Yoshihiko KOYAMA, Hiroshi NISHITANI, Tsuyoshi ARIIZUMI
  • Patent number: 10010563
    Abstract: The present invention is a sterile peritoneal dialysis fluid, including an acidic first liquid containing 60.0 to 94.0 g/L of icodextrin and 0 to 2.34 g/L of sodium chloride, and an alkaline second liquid containing an alkaline pH regulator, in which the first liquid after sterilization has a pH of 5.0 to 5.5, the second liquid after sterilization has a pH of 6.5 to 7.5, and a mixture of the first liquid and the second liquid after sterilization has a pH of 6.0 to 7.5. The present invention can provide a peritoneal dialysis fluid containing icodextrin, in which the stability of icodextrin during the heat sterilization and the subsequent storage can be improved to the maximum, and the pH of the peritoneal dialysis fluid is close to the physiological range.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: July 3, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Hirokazu Usami, Yoshihiko Koyama, Hiroshi Nishitani, Tsuyoshi Ariizumi
  • Publication number: 20170232673
    Abstract: A shaping apparatus includes a storage section that stores in advance a first relationship between a temperature of a shaping material and a heating time at a time at which oxidation of the shaping material starts as the shaping material is heated; and a control section that estimates a timing at which the oxidation of a material layer starts, based on an acquisition result from a temperature acquisition section, a measurement result from a time measurement section, and the first relationship stored in the storage section when the material layer on a conveyance body is preheated by a preheating section, and reduces a front surface temperature of the material layer on the conveyance body before the oxidation of the material layer starts.
    Type: Application
    Filed: February 8, 2017
    Publication date: August 17, 2017
    Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
  • Publication number: 20150250819
    Abstract: The present invention is a sterile peritoneal dialysis fluid, including an acidic first liquid containing 60.0 to 94.0 g/L of icodextrin and 0 to 2.34 g/L of sodium chloride, and an alkaline second liquid containing an alkaline pH regulator, in which the first liquid after sterilization has a pH of 5.0 to 5.5, the second liquid after sterilization has a pH of 6.5 to 7.5, and a mixture of the first liquid and the second liquid after sterilization has a pH of 6.0 to 7.5. The present invention can provide a peritoneal dialysis fluid containing icodextrin, in which the stability of icodextrin during the heat sterilization and the subsequent storage can be improved to the maximum, and the pH of the peritoneal dialysis fluid is close to the physiological range.
    Type: Application
    Filed: November 27, 2012
    Publication date: September 10, 2015
    Inventors: Hirokazu Usami, Yoshihiko Koyama, Hiroshi Nishitani, Tsuyoshi Ariizumi
  • Publication number: 20150231321
    Abstract: The present invention is a sterile peritoneal dialysis fluid, including an acidic first liquid containing only icodextrin and 0 to 2.34 g/L of sodium chloride, and an alkaline second liquid containing an alkaline pH regulator, in which the first liquid after sterilization has a pH of 5.0 to 5.5, the second liquid after sterilization has a pH of 6.5 to 7.5, and a mixture of the first liquid and the second liquid after sterilization has a pH of 6.0 to 7.5. The present invention can provide a peritoneal dialysis fluid containing icodextrin, in which the stability of icodextrin during the heat sterilization and the subsequent storage can be improved to the maximum, and the pH of the peritoneal dialysis fluid is close to the physiological range.
    Type: Application
    Filed: November 27, 2012
    Publication date: August 20, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Hiroshi Nishitani, Hirokazu Usami, Yoshihiko Koyama, Tsuyoshi Ariizumi
  • Patent number: 9026011
    Abstract: An image forming apparatus includes a photosensitive member, a first developer carrying member for carrying a developer comprising toner and a carrier for developing an electrostatic image formed on the photosensitive member, and a second developer carrying member for carrying the developer received from the first developer carrying. The second developer carrying member is disposed downstream of the first developer carrying member with respect to a rotational direction of the photosensitive member. In addition, a voltage source applies a developing bias voltage to the first developer carrying member and second developer carrying member, and a driving device rotates the first developer carrying member at a peripheral speed higher than that of the photosensitive member and rotates the second developer carrying member at a peripheral speed which is higher than that of the photosensitive member and which is lower than that of the first developer carrying member.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: May 5, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenta Kubo, Juun Horie, Shuji Moriya, Tomoaki Miyazawa, Hirokazu Usami, Tomohito Ishida, Manami Haraguchi, Takeshi Yamamoto
  • Patent number: 8835089
    Abstract: A toner containing toner base particles and an external additive, wherein regions with different tribocharging polarities with respect to a magnetic carrier are present in a domain-matrix structure on the surface of the toner base particles. The island region B has a predetermined height, the external additive has a reverse polarity to the region B in terms of tribocharging polarity to the magnetic carrier, the external additive contains a first external additive having a number-average primary particle size of 80-150 nm and a second external additive having a number-average primary particle size of 10-60 nm, and an average coverage Cb (%) with the first external additive in the region B is 27-100% and a coverage Ca (%) with the first external additive in the sea region A is 12% or less.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Emi Hagiwara, Yasunori Chigono, Hirokazu Usami, Manami Haraguchi, Ryo Inoue, Shintaro Ishida, Tomoaki Miyazawa
  • Publication number: 20110111337
    Abstract: In the formation of images by a two-component development system, provided is a magnetic carrier that can be used to output an image which has sufficient density, in which few white spots are present in a low-density portion located near the boundary between a high-density region and a low-density region, and in which the low-density portion has good graininess. The magnetic carrier contains magnetic carrier particles each of which has resin and a magnetic particle. The magnetic particle contains ferrite phases and phases comprising a perovskite-structured compound. The ferrite phases and phases comprising a perovskite-structured compound are combined.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 12, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Juun Horie, Kenta Kubo, Tomoaki Miyazawa, Takeshi Yamamoto, Manami Haraguchi, Hirokazu Usami, Yoshinobu Baba, Koh Ishigami, Hitoshi Oda
  • Patent number: 7877030
    Abstract: An image forming apparatus includes a developer carrying member to which a developing bias is applied. A frequency f of a developing bias waveform, a developing area S1 which is a time-integrated value of a difference between a voltage value of the developing bias and a solid electrostatic image potential VL in a developing period of the developing bias, a collecting area S2 which is a time-integrated value of a difference between the voltage value of the developing bias and VL in a collecting period of the developing bias, and a developing contrast value Vcon are used for defining a range of a value of the developing bias frequency f, a range of a value of a voltage change rate ? at VL during transition of the developing bias voltage value from a developing-side voltage to a collecting-side voltage, and a range of a value represented by the formula: {(S1?1.28×S2)×f/Vcon}×exp(?2.0×10?5×f/Hz).
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: January 25, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Juun Horie, Takeshi Yamamoto, Manami Haraguchi, Kenta Kubo, Tomoaki Miyazawa, Hirokazu Usami
  • Publication number: 20100159382
    Abstract: A carrier has an impedance Z having a frequency dependence, obtained by alternating current impedance measurement. When the frequency dependence is fitted by a fitting function, parameter ? lies in a range of 0.70 to 0.90 in an electric field of 103 V/cm.
    Type: Application
    Filed: December 7, 2009
    Publication date: June 24, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Juun Horie, Takeshi Yamamoto, Manami Haraguchi, Kenta Kubo, Tomoaki Miyazawa, Hirokazu Usami, Yoshinobu Baba, Koh Ishigami, Kazuo Uchida, Katsuhiro Watanabe, Jumpei Shirono
  • Publication number: 20100034564
    Abstract: An image forming apparatus includes a developer carrying member to which a developing bias is applied. A frequency f of a developing bias waveform, a developing area S1 which is a time-integrated value of a difference between a voltage value of the developing bias and a solid electrostatic image potential VL in a developing period of the developing bias, a collecting area S2 which is a time-integrated value of a difference between the voltage value of the developing bias and VL in a collecting period of the developing bias, and a developing contrast value Vcon are used for defining a range of a value of the developing bias frequency f, a range of a value of a voltage change rate ? at VL during transition of the developing bias voltage value from a developing-side voltage to a collecting-side voltage, and a range of a value represented by the formula: {(S1?1.28×S2)×f/Vcon}×exp(?2.0×10?5×f/Hz).
    Type: Application
    Filed: August 5, 2009
    Publication date: February 11, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Juun Horie, Takeshi Yamamoto, Manami Haraguchi, Kenta Kubo, Tomoaki Miyazawa, Hirokazu Usami