Patents by Inventor Yuki Hatano

Yuki Hatano 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: 11487114
    Abstract: The purpose of the present invention is to provide a head-up display having enhanced evenness of display image luminance. This head-up display is provided with: a backlight unit having a light source, the backlight unit emitting illumination light; a liquid crystal display element for displaying an image, the image being irradiated by the illumination light, whereby the liquid crystal display element emits display light; a control means for controlling the illuminance of the backlight unit and display by the liquid crystal display element; a housing having an opening through which the display light passes, the housing housing the liquid crystal display element and the backlight unit; and a cover glass for reflecting and/or transmitting in at least one location in a display light path and projecting the reflected and/or transmitted display light.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: November 1, 2022
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Yuki Watanabe, Takayuki Hatano, Akinori Koiida, Chiaki Shibuya, Yujiro Inoue
  • Patent number: 11000906
    Abstract: In an end mill body made of ceramic, a corner R rake face is formed in such a manner as to contain a point B and at least a region B, not a region A located on a side toward an end cutting edge. In other words, a first end portion of a cutting edge on a peripheral edge portion of the corner R rake face is formed on a peripheral edge of the region B of a corner R cutting edge, and a second end portion of the cutting edge reaches at least the point B. As a result, partial breakage of the corner R cutting edge is unlikely to occur in the course of cutting. That is, since the corner R rake face is formed in such a manner as to start from the first end portion located apart from a point A, which is the intersection of the end cutting edge and the corner R cutting edge, and such that the second end portion reaches the point B, a large cutting load is unlikely to be imposed on the starting point of the corner R rake face. Therefore, the corner R cutting edge is unlikely to be chipped.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 11, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shusuke Kitagawa, Yuki Hatano
  • Publication number: 20200030895
    Abstract: In an end mill body made of ceramic, a corner R rake face is formed in such a manner as to contain a point B and at least a region B, not a region A located on a side toward an end cutting edge. In other words, a first end portion of a cutting edge on a peripheral edge portion of the corner R rake face is formed on a peripheral edge of the region B of a corner R cutting edge, and a second end portion of the cutting edge reaches at least the point B. As a result, partial breakage of the corner R cutting edge is unlikely to occur in the course of cutting. That is, since the corner R rake face is formed in such a manner as to start from the first end portion located apart from a point A, which is the intersection of the end cutting edge and the corner R cutting edge, and such that the second end portion reaches the point B, a large cutting load is unlikely to be imposed on the starting point of the corner R rake face. Therefore, the corner R cutting edge is unlikely to be chipped.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 30, 2020
    Inventors: Shusuke KITAGAWA, Yuki HATANO
  • Patent number: 8492300
    Abstract: An insert includes a silicon nitride sintered body including ?-Si3N4 as a main component, Mg, and a rare-earth element Re (Y, La, Ce, Er, Dy, Yb). A content of Mg in terms of MgO is 1.0-7.0 mol %, a content of Re in terms of an oxide thereof is 0.4-1.0 mol %, and a total content of Mg and Re is from 1.7 to less than 7.5 mol %. The insert has a graded composition in which oxygen content increases from a surface of the sintered body toward an inside thereof such that 0.8-1.5 mass % of oxygen is contained in a region of less than 0.5 mm inside from the surface, 1.1-2.3 mass % of oxygen is contained in a region of 0.5 mm or more inside from the surface, and a difference in oxygen content between the regions is 0.1-1.0 mass %.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: July 23, 2013
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Ryoji Toyoda, Yusuke Suzuki, Yuki Hatano
  • Publication number: 20100040424
    Abstract: An insert includes a silicon nitride sintered body including ?-Si3N4 as a main component, Mg, and a rare-earth element Re (Y, La, Ce, Er, Dy, Yb). A content of Mg in terms of MgO is 1.0-7.0 mol %, a content of Re in terms of an oxide thereof is 0.4-1.0 mol %, and a total content of Mg and Re is from 1.7 to less than 7.5 mol %. The insert has a graded composition in which oxygen content increases from a surface of the sintered body toward an inside thereof such that 0.8-1.5 mass % of oxygen is contained in a region of less than 0.5 mm inside from the surface, 1.1-2.3 mass % of oxygen is contained in a region of 0.5 mm or more inside from the surface, and a difference in oxygen content between the regions is 0.1-1.0 mass %.
    Type: Application
    Filed: March 14, 2008
    Publication date: February 18, 2010
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Ryoji Toyoda, Yusuke Suzuki, Yuki Hatano
  • Patent number: 6939607
    Abstract: A ceramic cutting tool including a ceramic base member 4 of a tool main body 1 which is formed of a composite ceramic which contains a hard phase dispersed within an alumina matrix phase. The hard phase contains, as a predominant component, one or more elements selected from hard-phase-forming metal elements M in the form of at least one of a carbide, nitride, or boride, or in the form of a solid solution of at least two selected from the carbide, nitride and boride. The hard-phase-forming metal elements M include Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Si. The surface of the ceramic base member 4 is covered with a coating layer 1f, which contains titanium carbonitride or titanium nitride as a predominant component. The coating layer 1f has an average crystal-grain size of 0.1 to 0.5 ?m as observed on the surface, and an average thickness of 0.5 to 2 ?m. The coating layer 4f is formed by a CVD at a low to medium temperature range of 750 to 900° C.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: September 6, 2005
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hideki Kato, Yuki Hatano, Hideaki Yukimachi
  • Patent number: 6740611
    Abstract: An alumina-based composite sintered material comprising alumina as a main ingredient and containing one or more carbonitridation products of groups IVa, Va and VIa of the periodic table and/or two or more carbonitridation products of solid solutions of groups IVa, Va and VIa of the periodic table. The content of nitrogen solid solute in the carbonitridation product increases from the interior to the surface of the sintered material, and the Vickers hardness at the surface of the sintered material is 19.5 GPa or more.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: May 25, 2004
    Assignee: NGK Spark Plug Co., Ltd.
    Inventor: Yuki Hatano
  • Publication number: 20020054794
    Abstract: A ceramic cutting tool including a ceramic base member 4 of a tool main body 1 which is formed of a composite ceramic which contains a hard phase dispersed within an alumina matrix phase. The hard phase contains, as a predominant component, one or more elements selected from hard-phase-forming metal elements M in the form of at least one of a carbide, nitride, or boride, or in the form of a solid solution of at least two selected from the carbide, nitride and boride. The hard-phase-forming metal elements M include Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Si. The surface of the ceramic base member 4 is covered with a coating layer 1f, which contains titanium carbonitride or titanium nitride as a predominant component. The coating layer 1f has an average crystal-grain size of 0.1 to 0.5 &mgr;m as observed on the surface, and an average thickness of 0.5 to 2 &mgr;m. The coating layer 4f is formed by a CVD at a low to medium temperature range of 750 to 900° C.
    Type: Application
    Filed: September 7, 2001
    Publication date: May 9, 2002
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Hideki Kato, Yuki Hatano, Hideaki Yukimachi
  • Publication number: 20010029230
    Abstract: An alumina-based composite sintered material comprising alumina as a main ingredient and containing one or more carbonitridation products of groups IVa, Va and VIa of the periodic table and/or two or more carbonitridation products of solid solutions of groups IVa, Va and VIa of the periodic table. The content of nitrogen solid solute in the carbonitridation product increases from the interior to the surface of the sintered material, and the Vickers hardness at the surface of the sintered material is 19.5 GPa or more.
    Type: Application
    Filed: March 7, 2001
    Publication date: October 11, 2001
    Inventor: Yuki Hatano