Patents by Inventor Hidetaka Hoshino
Hidetaka Hoshino 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).
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Publication number: 20240117267Abstract: The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for motorcycle applications including select metal dihydrocarbyl dithiophosphates to achieve low copper corrosion, good TBN retention, and good sulfur retention applicable to motorcycle engines and transmissions.Type: ApplicationFiled: September 27, 2022Publication date: April 11, 2024Inventors: David Edwards, Hidetaka Hoshino, Guillaume Carpentier
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Publication number: 20240110123Abstract: The present disclosure relates to lubricating compositions configured for motorcycles and also to methods of lubricating a motorcycle engine, transmission, and clutch assembly with a single lubricating composition that is generally provided from a common sump or reservoir to achieve improved fuel economy.Type: ApplicationFiled: September 21, 2022Publication date: April 4, 2024Inventors: Hidetaka Hoshino, Akiyuki Honda, Guillaume Carpentier
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Patent number: 11912955Abstract: The present disclosure relates to lubricating compositions including effective amounts of molybdenum from an oil-soluble molybdenum compound and a magnesium boost in the detergent system to achieve passing motor friction and valve train wear performance.Type: GrantFiled: October 28, 2022Date of Patent: February 27, 2024Assignee: Afton Chemical CorporationInventors: Samuel Bruce Field, Kenneth Garelick, Hidetaka Hoshino, Guillaume Carpentier
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Patent number: 10451869Abstract: A light deflector includes: a polygon mirror made of plastic and having a plurality of reflecting surfaces; a motor including a rotor and configured to rotate the polygon mirror; and a pressing member configured to press the polygon mirror toward the rotor in an axial direction of the motor. The polygon mirror has a first surface having a polygonal shape, and a second surface opposite to the first surface in the axial direction and having a polygonal shape. The second surface faces the rotor. The polygon mirror includes a plurality of first contact portions configured to be in contact with and pressed by the pressing member, and the first contact portions are provided on the first surface at positions equally distant from an axis of the motor between each of vertices of the first surface and the axis of the motor.Type: GrantFiled: August 15, 2017Date of Patent: October 22, 2019Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro Hayakawa, Toshio Sakai, Hidetaka Hoshino, Junji Fujitani
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Patent number: 9939566Abstract: A polygon mirror made of plastic is provided. The polygon mirror has a plurality of reflecting surfaces, a first surface intersecting the plurality of reflecting surfaces at a first side, a second surface intersecting the plurality of reflecting surfaces at a second side opposite to the first side, with a through hole provided to extend through the first surface and the second surface at a center of the polygon mirror. The polygon mirror includes a plurality of gate marks of injection molding. When viewed from an extending direction of the through hole, the gate marks are located on straight lines passing through the center and vertices of the first surface, and are rotationally symmetric with respect to the center.Type: GrantFiled: October 3, 2016Date of Patent: April 10, 2018Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka Hoshino, Yutaka Hattori, Toshio Sakai, Kazuhiro Hayakawa
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Patent number: 9851558Abstract: A light deflector and an image forming apparatus including the light deflector are provided. The light deflector includes a polygon mirror made of plastic and a motor including a rotor. The rotor supports the polygon mirror and includes a base and a first protrusion protruding from the base toward the polygon mirror in an axial direction. The polygon mirror includes a main body having a plurality of reflecting surfaces, and a second protrusion protruding from the main body toward the base. The second protrusion has an end face and an inner face. The end face is in contact with the base in the axial direction, and the inner face is in contact with the first protrusion in a radial direction.Type: GrantFiled: May 27, 2015Date of Patent: December 26, 2017Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro Hayakawa, Hidetaka Hoshino, Toshio Sakai, Junji Fujitani, Yasuomi Jibu
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Publication number: 20170343798Abstract: A light deflector includes: a polygon mirror made of plastic and having a plurality of reflecting surfaces; a motor including a rotor and configured to rotate the polygon mirror; and a pressing member configured to press the polygon mirror toward the rotor in an axial direction of the motor. The polygon mirror has a first surface having a polygonal shape, and a second surface opposite to the first surface in the axial direction and having a polygonal shape. The second surface faces the rotor. The polygon mirror includes a plurality of first contact portions configured to be in contact with and pressed by the pressing member, and the first contact portions are provided on the first surface at positions equally distant from an axis of the motor between each of vertices of the first surface and the axis of the motor.Type: ApplicationFiled: August 15, 2017Publication date: November 30, 2017Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro HAYAKAWA, Toshio SAKAI, Hidetaka HOSHINO, Junji FUJITANI
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Patent number: 9778457Abstract: A light deflector includes: a polygon mirror made of plastic and having a plurality of reflecting surfaces; a motor including a rotor and configured to rotate the polygon mirror; and a pressing member configured to press the polygon mirror toward the rotor in an axial direction of the motor. The polygon mirror has a first surface having a polygonal shape, and a second surface opposite to the first surface in the axial direction and having a polygonal shape. The second surface faces the rotor. The polygon mirror includes a plurality of first contact portions configured to be in contact with and pressed by the pressing member, and the first contact portions are provided on the first surface at positions equally distant from an axis of the motor between each of vertices of the first surface and the axis of the motor.Type: GrantFiled: February 6, 2015Date of Patent: October 3, 2017Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro Hayakawa, Toshio Sakai, Hidetaka Hoshino, Junji Fujitani
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Publication number: 20170097450Abstract: A polygon mirror made of plastic is provided. The polygon mirror has a plurality of reflecting surfaces, a first surface intersecting the plurality of reflecting surfaces at a first side, a second surface intersecting the plurality of reflecting surfaces at a second side opposite to the first side, with a through hole provided to extend through the first surface and the second surface at a center of the polygon mirror. The polygon mirror includes a plurality of gate marks of injection molding. When viewed from an extending direction of the through hole, the gate marks are located on straight lines passing through the center and vertices of the first surface, and are rotationally symmetric with respect to the center.Type: ApplicationFiled: October 3, 2016Publication date: April 6, 2017Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka HOSHINO, Yutaka HATTORI, Toshio SAKAI, Kazuhiro HAYAKAWA
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Patent number: 9372431Abstract: In a scanning optical apparatus including a light source, a light deflector having a reflecting surface, and a single scanning lens, a light flux deflected in a main scanning direction is focused on an image surface. The reflecting and image surfaces are conjugate to each other with respect to a sub scanning direction, Bmax×Bmin>0, and Dmax×Dmin<0 where Bmax and Bmin are a maximum value and a minimum value, respectively, of paraxial focal points, Dmax and Dmin are a maximum value and a minimum value, respectively, of midpoints of focal depth in the sub scanning plane, the values being determined with reference to the image surface, wherein the value of the image surface is 0 and the values on a farther-from-the-scanning-lens side behind the image surface have positive values.Type: GrantFiled: February 26, 2015Date of Patent: June 21, 2016Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hitoshi Fujino, Yoshifumi Nakamura, Hiroyuki Ominato, Hidetaka Hoshino
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Patent number: 9250558Abstract: In a light deflector including a polygon mirror having a plurality of reflecting surfaces; and a motor configured to rotate the polygon mirror, each of the reflecting surfaces, which has leading and trailing edges with respect to a direction of rotation of the polygon mirror and a center between the two edges, is configured to curve with the center displaced with respect to a reference straight line passing through the two edges in a plane perpendicular to an axis of rotation of the polygon mirror, radially, to a first side under a non-operating state in which the motor is not in operation, and to a second side (opposite to the first side) under a first rotating state in which progress of deformation of each of the reflecting surfaces has converged after a lapse of a first period of time from a start of rotation of the motor.Type: GrantFiled: February 26, 2015Date of Patent: February 2, 2016Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka Hoshino, Hitoshi Fujino, Yoshifumi Nakamura
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Publication number: 20150346485Abstract: A light deflector and an image forming apparatus including the light deflector are provided. The light deflector includes a polygon mirror made of plastic and a motor including a rotor. The rotor supports the polygon mirror and includes a base and a first protrusion protruding from the base toward the polygon mirror in an axial direction. The polygon mirror includes a main body having a plurality of reflecting surfaces, and a second protrusion protruding from the main body toward the base. The second protrusion has an end face and an inner face. The end face is in contact with the base in the axial direction, and the inner face is in contact with the first protrusion in a radial direction.Type: ApplicationFiled: May 27, 2015Publication date: December 3, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro HAYAKAWA, Hidetaka HOSHINO, Toshio SAKAI, Junji FUJITANI, Yasuomi JIBU
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Publication number: 20150248077Abstract: In a light deflector including a polygon mirror having a plurality of reflecting surfaces; and a motor configured to rotate the polygon mirror, each of the reflecting surfaces, which has leading and trailing edges with respect to a direction of rotation of the polygon mirror and a center between the two edges, is configured to curve with the center displaced with respect to a reference straight line passing through the two edges in a plane perpendicular to an axis of rotation of the polygon mirror, radially, to a first side under a non-operating state in which the motor is not in operation, and to a second side (opposite to the first side) under a first rotating state in which progress of deformation of each of the reflecting surfaces has converged after a lapse of a first period of time from a start of rotation of the motor.Type: ApplicationFiled: February 26, 2015Publication date: September 3, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka HOSHINO, Hitoshi FUJINO, Yoshifumi NAKAMURA
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Publication number: 20150248076Abstract: In a scanning optical apparatus including a light source, a light deflector having a reflecting surface, and a single scanning lens, a light flux deflected in a main scanning direction is focused on an image surface. The reflecting and image surfaces are conjugate to each other with respect to a sub scanning direction, Bmax×Bmin>0, and Dmax×Dmin<0 where Bmax and Bmin are a maximum value and a minimum value, respectively, of paraxial focal points, Dmax and Dmin are a maximum value and a minimum value, respectively, of midpoints of focal depth in the sub scanning plane, the values being determined with reference to the image surface, wherein the value of the image surface is 0 and the values on a farther-from-the-scanning-lens side behind the image surface have positive values.Type: ApplicationFiled: February 26, 2015Publication date: September 3, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hitoshi FUJINO, Yoshifumi NAKAMURA, Hiroyuki OMINATO, Hidetaka HOSHINO
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Publication number: 20150226958Abstract: A light deflector includes: a polygon mirror made of plastic and having a plurality of reflecting surfaces; a motor including a rotor and configured to rotate the polygon mirror; and a pressing member configured to press the polygon mirror toward the rotor in an axial direction of the motor. The polygon mirror has a first surface having a polygonal shape, and a second surface opposite to the first surface in the axial direction and having a polygonal shape. The second surface faces the rotor. The polygon mirror includes a plurality of first contact portions configured to be in contact with and pressed by the pressing member, and the first contact portions are provided on the first surface at positions equally distant from an axis of the motor between each of vertices of the first surface and the axis of the motor.Type: ApplicationFiled: February 6, 2015Publication date: August 13, 2015Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuhiro HAYAKAWA, Toshio SAKAI, Hidetaka HOSHINO, Junji FUJITANI
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Patent number: 8953236Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM and a refractive power ?nM in a main scanning direction, and a ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-22 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(1.897×107)Z2+6744Z+0.5255, B(Z)=(2.964×107)Z2+5645Z+0.6494, C(Z)=(3.270×107)Z2+3589Z+0.5250, D(Z)=(5.016×107)Z2+4571Z+0.8139, g1(fi)=fi{D(Z)?B(Z)}/12?5D(Z)/6+11B(Z)/6, g2(fi)=fi{C(Z)?D(Z)}/12?5C(Z)/6+11A(Z)/6.Type: GrantFiled: December 6, 2013Date of Patent: February 10, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Hidetaka Hoshino, Yoshifumi Nakamura, Hitoshi Fujino
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Patent number: 8913313Abstract: A scanning optical apparatus includes: a light source; a light deflector configured to deflect the light beam from the light source in a main scanning direction; an incident optical system disposed between the light source and the light deflector and configured to render the light beam from the light source nearly parallel in the main scanning direction and to converge the light beam in a sub-scanning direction to bring the light beam to a focus in proximity to the light deflector; and a scanning lens configured to focus the light beam deflected by the light deflector onto a target surface to form spot-like images. The incident optical system includes one or more lenses which provide at least one refracting surface and at least one diffraction surface, and ?nS/?ds<0 is satisfied, where ?nS is a refractive power in the sub-scanning direction and ?dS is a diffraction power in the sub-scanning direction.Type: GrantFiled: September 24, 2012Date of Patent: December 16, 2014Assignee: Brother Kogyo Kabushiki KaishaInventors: Yoshifumi Nakamura, Hitoshi Fujino, Hidetaka Hoshino
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Patent number: 8797622Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM in a main scanning direction, a diffractive power ?dS in a sub-scanning direction, a refractive power ?nM in the main scanning direction, and a refractive power ?nS in the sub-scanning direction. A ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-30 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(3.532×107)Z2+3023Z+0.7010, B(Z)=(5.719×107)Z2+4169Z+0.7678, C(Z)=(1.727×107)Z2+3244Z+0.4217, D(Z)=(1.373×108)Z2+3232Z+1.224, g1(fi)=fi{D(Z)?B(Z)}/20?0.5D(Z)+1.5B(Z), g2(fi)=fi{C(Z)?D(Z)}/20?0.5C(Z)+1.5A(Z), and a ratio ?nS/?dS in the sub-scanning direction satisfies: ?nS/?dS<1.3.Type: GrantFiled: September 26, 2013Date of Patent: August 5, 2014Assignee: Brother Kogyo Kabushiki KaishaInventors: Hidetaka Hoshino, Yoshifumi Nakamura, Hitoshi Fujino
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Publication number: 20140160546Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM and a refractive power ?nM in a main scanning direction, and a ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-22 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(1.897×107)Z2+6744Z+0.5255, B(Z)=(2.964×107)Z2+5645Z+0.6494, C(Z)=(3.270×107)Z2+3589Z+0.5250, D(Z)=(5.016×107)Z2+4571Z+0.8139, g1(fi)=fi{D(Z)?B(Z)}/12?5D(Z)/6+11B(Z)/6, g2(fi)=fi{C(Z)?D(Z)}/12?5C(Z)/6+11A(Z)/6.Type: ApplicationFiled: December 6, 2013Publication date: June 12, 2014Inventors: Hidetaka HOSHINO, Yoshifumi NAKAMURA, Hitoshi FUJINO
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Patent number: RE47001Abstract: In a scanning optical apparatus, an illumination optical system has a diffractive power ?dM and a refractive power ?nM in a main scanning direction, and a ratio ?nM/?dM in the main scanning direction for a focal length fi in a range of 10-22 mm satisfies: g2(fi)??nM/?dM?g1(fi), where A(Z)=(1.897×107)Z2+6744Z+0.5255, B(Z)=(2.964×107)Z2+5645Z+0.6494, C(Z)=(3.270×107)Z2+3589Z+0.5250, D(Z)=(5.016×107)Z2+4571Z+0.8139, g1(fi)=fi{D(Z)?B(Z)}/12?5D(Z)/6+11B(Z)/6, g2(fi)=fi{C(Z)?D(Z)}/12?5C(Z)/6+11A(Z)/6 g2(fi)=fi{C(Z)?A(Z)}/12?5C(Z)/6+11A(Z)/6.Type: GrantFiled: November 2, 2016Date of Patent: August 21, 2018Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hidetaka Hoshino, Yoshifumi Nakamura, Hitoshi Fujino