Patents by Inventor Masafumi Sakamoto

Masafumi Sakamoto 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: 20230285627
    Abstract: The air purifier is provided with a housing having an air intake port and an exhaust port, a filter unit including a photocatalytic filter and housed in a unit housing section within the housing, a light source that irradiates the photocatalytic filter with light, an air blowing fan that generates an air flow passing through the unit housing section, and a contamination sensor provided between the photocatalytic filter and the air blowing fan. In a case where a controller determines that organic substances excessively adheres to the photocatalytic filter on the basis of detection values of the contamination sensor, it drives the light source at the maximum light quantity and drives the air blowing fan at the minimum air speed to refresh the photocatalytic filter.
    Type: Application
    Filed: March 7, 2023
    Publication date: September 14, 2023
    Inventors: MASAFUMI SAKAMOTO, TATSUFUMI ATSUMI, NORIAKI TAGUCHI
  • Publication number: 20230243531
    Abstract: An air purifier includes a housing that includes an intake port and an exhaust port, a filter unit that includes a photocatalytic filter and is housed in a unit housing within the housing, a light source that exposes the photocatalytic filter to light, and a blast fan that generates a flow of air passing through the unit housing. The photocatalytic filter is formed in a wavy shape in which ridge portions and trough portions extending in a first direction are alternately arranged in a second direction orthogonal to the first direction, and the photocatalytic filter is housed in the unit housing such that the flow of air flows along the first direction.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 3, 2023
    Inventors: Takaki KAWAGOSHI, NORIAKI TAGUCHI, MASAFUMI SAKAMOTO, TATSUFUMI ATSUMI
  • Patent number: 11209770
    Abstract: An image forming apparatus comprises a housing including a resin frame. The resin frame is divided in a sheet feeding direction to include a conveyance frame, a process frame and a fixation frame. Moreover, the image forming apparatus comprises a driving unit and a drive frame. The driving unit is attachably and detachably provided in the drive frame, and applies a rotational driving force to rotating bodies. The drive frame is positioned with respect to the conveyance frame or the process frame, supports the rotating bodies, and has an attaching portion for the driving unit. Moreover, the drive frame is attached to one surface of the resin frame.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: December 28, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohtaroh Okamoto, Masafumi Sakamoto, Shinichi Takeda, Noriaki Taguchi, Hideaki Kadowaki
  • Patent number: 11054789
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a separating member. The first duct includes a first duct A forming member and a first duct B forming member provided with a plurality of communication ports which form one side surface of a second sheet transport path through which a sheet after heating and fixing is transported, a first exhaust fan for discharging air of the first duct to an outside of the apparatus body, and a filter disposed on a downstream side from the second sheet transport path. The first duct separates the second sheet transport path from spaces other than the first duct in the apparatus body. Further, the separating member separates the second sheet transport path from spaces other than the first duct in the image forming apparatus.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: July 6, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Patent number: 10877435
    Abstract: An image forming apparatus includes an exhaust unit. The exhaust unit includes a first duct. The first duct includes a plurality of communication ports, and an exhaust fan for discharging air of the first duct to an outside. The plurality of communication ports are each formed such that distances to the exhaust fan are different from each other. Further, the first duct includes an inflow port which is formed on an upstream of flow of air from the communication port formed on the most upstream side of the flow of the air among the plurality of communication ports, and to which the auxiliary air is supplied from a first exhaust fan provided in the outside.
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: December 29, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Publication number: 20200393788
    Abstract: An image forming apparatus comprises a housing including a resin frame. The resin frame is divided in a sheet feeding direction to include a conveyance frame, a process frame and a fixation frame. Moreover, the image forming apparatus comprises a driving unit and a drive frame. The driving unit is attachably and detachably provided in the drive frame, and applies a rotational driving force to rotating bodies. The drive frame is positioned with respect to the conveyance frame or the process frame, supports the rotating bodies, and has an attaching portion for the driving unit. Moreover, the drive frame is attached to one surface of the resin frame.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Inventors: SHOHTAROH OKAMOTO, MASAFUMI SAKAMOTO, SHINICHI TAKEDA, NORIAKI TAGUCHI, HIDEAKI KADOWAKI
  • Patent number: 10866148
    Abstract: A detection device according to a first aspect includes a first arm, a second arm, and a detection unit having two states as output. The first arm and the second arm each have a corresponding pressure receiving portion pushed by one of detection targets and are respectively rotatable about rotation axes as rotation centers along the same straight line such that the first arm and the second arm have different positions when the corresponding pressure receiving portion is pushed and not pushed by one of the detection targets. The output of the detection unit is switched to one of the two states in accordance with the positions of the arms.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: December 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideaki Kadowaki, Masafumi Sakamoto
  • Patent number: 10775719
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a first exhaust fan provided in the first duct. The first exhaust fan suctions air inside the first duct and sends the suctioned air to an outside of the apparatus body. The first duct is disposed at a position adjacent to the fixing unit. The first duct is divided into a plurality of air flow paths.
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Publication number: 20190234812
    Abstract: A detection device according to a first aspect includes a first arm, a second arm, and a detection unit having two states as output. The first arm and the second arm each have a corresponding pressure receiving portion pushed by one of detection targets and are respectively rotatable about rotation axes as rotation centers along the same straight line such that the first arm and the second arm have different positions when the corresponding pressure receiving portion is pushed and not pushed by one of the detection targets. The output of the detection unit is switched to one of the two states in accordance with the positions of the arms.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 1, 2019
    Inventors: HIDEAKI KADOWAKI, MASAFUMI SAKAMOTO
  • Patent number: 10359733
    Abstract: A support member connection mechanism includes a plurality of support members that are arranged side by side in a longitudinal direction of a wiring member and are configured to support the wiring member; and a junction configured to couple between two adjacent support members of the plurality of support members in such a manner that the two adjacent support members are bendable to one side about a rotation axis. The wiring member is exposed in a predetermined bent side junction area including an area of the junction on a bent side of the two adjacent support members.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: July 23, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noriaki Taguchi, Masafumi Sakamoto, Shinichi Takeda
  • Publication number: 20190196398
    Abstract: An image forming apparatus includes an exhaust unit. The exhaust unit includes a first duct. The first duct includes a plurality of communication ports, and an exhaust fan for discharging air of the first duct to an outside. The plurality of communication ports are each formed such that distances to the exhaust fan are different from each other. Further, the first duct includes an inflow port which is formed on an upstream of flow of air from the communication port formed on the most upstream side of the flow of the air among the plurality of communication ports, and to which the auxiliary air is supplied from a first exhaust fan provided in the outside.
    Type: Application
    Filed: December 23, 2018
    Publication date: June 27, 2019
    Inventors: MASAFUMI SAKAMOTO, HIDEAKI KADOWAKI
  • Publication number: 20190196397
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a separating member. The first duct includes a first duct A forming member and a first duct B forming member provided with a plurality of communication ports which form one side surface of a second sheet transport path through which a sheet after heating and fixing is transported, a first exhaust fan for discharging air of the first duct to an outside of the apparatus body, and a filter disposed on a downstream side from the second sheet transport path. The first duct separates the second sheet transport path from spaces other than the first duct in the apparatus body. Further, the separating member separates the second sheet transport path from spaces other than the first duct in the image forming apparatus.
    Type: Application
    Filed: December 22, 2018
    Publication date: June 27, 2019
    Inventors: MASAFUMI SAKAMOTO, HIDEAKI KADOWAKI
  • Publication number: 20190196369
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a first exhaust fan provided in the first duct. The first exhaust fan suctions air inside the first duct and sends the suctioned air to an outside of the apparatus body. The first duct is disposed at a position adjacent to the fixing unit. The first duct is divided into a plurality of air flow paths.
    Type: Application
    Filed: December 23, 2018
    Publication date: June 27, 2019
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Patent number: 10199547
    Abstract: A red phosphor including the composition represented by the following general formula. (x?a)MgO.(a/2)Sc2O3.yMgF2.cCaF2.(1?b)GeO2.(b/2)Mt2O3:zMn4+ where x, y, z, a, b, and c satisfy 2.0?x?4.0, 0<y<1.5, 0<z<0.05, 0?a<0.5, 0<b<0.5, 0?c<1.5, and y+c<1.5, and Mt is at least one element selected from the group consisting of Al, Ga, and In.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: February 5, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Shoji Hosokawa, Masafumi Sakamoto, Tomokazu Yoshida
  • Patent number: 10106735
    Abstract: The present disclosure provides a red phosphor represented by formula (1): (x-a-b)MgO.aM1O.bM2O1.5.yMgF2.fM6X2.(1-g)GeO2.gM7O1.5:zMn4+??(1) where x, y, z, a, b, f, and g satisfy 1.144<x?11.0, 0<y<1.597, 0<z<0.1, 0<a<1.0, 0?b?1.0, 0<f?2.0, 0?g<0.484, 1.144<(x-a-b), and b and g satisfy b+g?0; M1 is at least one element selected from the group consisting of Ca, Sr, Ba, and Zn; M2 is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; M6 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; M7 is at least one element selected from the group consisting of B, Al, Ga, and In; and X is at least one element selected from the group consisting of F, Cl, Br, and I, and M6X2 is other than MgF2.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 23, 2018
    Assignee: NICHIA CORPORATION
    Inventor: Masafumi Sakamoto
  • Patent number: 9882442
    Abstract: An axial gap type rotating electric machine, having a stator with first tooth parts protruding in an axial direction and formed in a concentric arc-like manner, and a rotor with magnetic poles arranged in a distributed manner in the circumferential direction, and the magnetic poles include second tooth parts that protrude in the axial direction and are formed in a concentric arc-like manner, the second tooth parts being opposedly arranged so as to respectively engage with the first tooth parts with the intermediation of the air gap. The rotor is incorporated in the rotating member so as to be movable in the axial direction and so as not to be rotatable with respect to the rotating member. The rotating electric machine further includes an urging device that makes the air gap between the rotor and the stator adjustable.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: January 30, 2018
    Assignee: NIPPON PISTON RING CO., LTD
    Inventors: Masafumi Sakamoto, Shigeyoshi Sato, Shunsuke Takeguchi, Shun Yasuda
  • Publication number: 20170222099
    Abstract: A red phosphor including the composition represented by the following general formula. (x-a)MgO·(a/2)Sc2O3·yMgF2·cCaF2·(1-b)GeO2·(b/2)Mt2O3:zMn4+ where x, y, z, a, b, and c satisfy 2.0?x?4.0, 0<y<1.5, 0<z<0.05, 0?a<0.5, 0<b<0.5, 0?c<1.5, and y+c<1.5, and Mt is at least one element selected from the group consisting of Al, Ga, and In.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Inventors: Shoji HOSOKAWA, Masafumi SAKAMOTO, Tomokazu YOSHIDA
  • Patent number: 9653658
    Abstract: A red phosphor including the composition represented by the following general formula. (x?a)MgO.(a/2)Sc2O3.yMgF2.cCaF2.(1?b)GeO2.(b/2)M2O3:zMn4+ where x, y, z, a, b, and c satisfy 2.0?x?4.0, 0<y<1.5, 0<z<0.05, 0?a<0.5, 0<b<0.5, 0?c<1.5, and y+c<1.5, and M is at least one element selected from the group consisting of Al, Ga, and In.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: May 16, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Shoji Hosokawa, Masafumi Sakamoto, Tomokazu Yoshida
  • Publication number: 20170105302
    Abstract: A support member connection mechanism includes a plurality of support members that are arranged side by side in a longitudinal direction of a wiring member and are configured to support the wiring member; and a junction configured to couple between two adjacent support members of the plurality of support members in such a manner that the two adjacent support members are bendable to one side about a rotation axis. The wiring member is exposed in a predetermined bent side junction area including an area of the junction on a bent side of the two adjacent support members.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 13, 2017
    Inventors: Noriaki TAGUCHI, Masafumi SAKAMOTO, Shinichi TAKEDA
  • Publication number: 20160215210
    Abstract: The present disclosure provides a red phosphor represented by formula (1): (x-a-b)MgO.aM1O.bM2O1.5.yMgF2.fM6X2.(1-g)GeO2.gM7O1.5:zMn4+??(1) where x, y, z, a, b, f, and g satisfy 1.144?x?11.0, 0<y<1.597, 0<z<0.1, 0<a<1.0, 0?b?1.0, 0?f?2.0, 0?g<0.484, 1.144<(x-a-b), and b and g satisfy b+g?0; M1 is at least one element selected from the group consisting of Ca, Sr, Ba, and Zn; M2 is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; M6 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; M7 is at least one element selected from the group consisting of B, Al, Ga, and In; and X is at least one element selected from the group consisting of F, Cl, Br, and I, and M6X2 is other than MgF2.
    Type: Application
    Filed: January 27, 2016
    Publication date: July 28, 2016
    Applicant: Nichia Corporation
    Inventor: Masafumi SAKAMOTO