Patents by Inventor Tsutomu Yamasaki

Tsutomu Yamasaki 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: 20200315474
    Abstract: A biosignal sensor includes a substrate, first light-emitting elements, second light-emitting elements, and light-receiving elements. The light-receiving elements are positioned individually spaced apart by different distances from the first light-emitting elements and the second light-emitting elements and receive light from the first light-emitting elements and the second light-emitting elements. The plurality of light-receiving elements are linearly or substantially linearly aligned in an X direction. The first light-emitting elements and the second light-emitting elements are located at positions different in a Y direction from positions of the plurality of light-receiving elements.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Tsutomu YAMASAKI, Kaname HANADA
  • Publication number: 20200321750
    Abstract: A light-emitting module includes a substrate, a surface light-emitting element, and an optical waveguide. The surface light-emitting element includes light sources and is attached to the substrate. The optical waveguide is attached to the surface light-emitting element in a state in which the optical waveguide covers the light sources. The optical waveguide extends in an axial direction with a refractive index distribution in a radial direction. The optical waveguide condenses light beams emitted from the surface light-emitting element.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 8, 2020
    Inventor: Tsutomu YAMASAKI
  • Patent number: 10261182
    Abstract: A light-emitting element and a light-receiving element are provided on a surface of a substrate. The light-emitting element and the light-receiving element are sealed by transparent resin members and, respectively. A lens is provided at the transparent resin member at a position above the light-emitting element. The center of the lens and a mounting position of the light-emitting element are disposed being shifted from each other. With this, an optical axis of light outputted via the lens is slanted toward an opposite direction side with respect to the light-receiving element at a predetermined elevation angle. In this case, a beam divergence angle of light outputted from the lens is set to a predetermined value.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 16, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kaname Hanada, Shinichiro Chiku, Tsutomu Yamasaki, Tomiya Sonoda
  • Publication number: 20180306715
    Abstract: A light-emission-side prism accommodates a light-emitting element and is disposed in a light-emission guide hole extending in a light-emission axis direction. A light-reception-side prism accommodates a light-receiving element and is disposed in a light-reception guide hole extending in a light-reception axis direction. The light-emission-side prism has a total-reflection surface that causes light from the light-emitting element to be directed in the light-emission axis direction and a lens surface that causes light emitted from the total-reflection surface to be condensed. The light-reception-side prism includes a lens surface that causes scattered light entering from a smoke monitoring area in the light-reception axis direction to be condensed and a total-reflection surface that causes light condensed by the lens surface to be directed toward the light-receiving element.
    Type: Application
    Filed: November 30, 2017
    Publication date: October 25, 2018
    Inventor: Tsutomu YAMASAKI
  • Publication number: 20150212208
    Abstract: A light-emitting element and a light-receiving element are provided on a surface of a substrate. The light-emitting element and the light-receiving element are sealed by transparent resin members and, respectively. A lens is provided at the transparent resin member at a position above the light-emitting element. The center of the lens and a mounting position of the light-emitting element are disposed being shifted from each other. With this, an optical axis of light outputted via the lens is slanted toward an opposite direction side with respect to the light-receiving element at a predetermined elevation angle. In this case, a beam divergence angle of light outputted from the lens is set to a predetermined value.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Kaname Hanada, Shinichiro Chiku, Tsutomu Yamasaki, Tomiya Sonoda
  • Patent number: 9052390
    Abstract: Three light emitting elements and one light receiving element are provided on a surface of a substrate. The light receiving element is disposed within a first triangular region connecting the three light emitting elements. A first rectangle circumscribed around the triangular region is formed. In addition, a second rectangle circumscribed around a second triangle formed when intersections of a virtually set XY plane and optical axes of light beams emitted from the three light emitting elements are perpendicularly projected on the surface of the substrate, is formed. Directions of the light emitted from the three light emitting elements are set such that at least either one of length and breadth dimensions of the second rectangle is larger than a corresponding one of length and breadth dimensions of the first rectangle.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: June 9, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kaname Hanada, Atsushi Kaji, Tsutomu Yamasaki, Hiroto Ishikawa, Tomiya Sonoda
  • Publication number: 20150022092
    Abstract: Three light emitting elements and one light receiving element are provided on a surface of a substrate. The light receiving element is disposed within a first triangular region connecting the three light emitting elements. A first rectangle circumscribed around the triangular region is formed. In addition, a second rectangle circumscribed around a second triangle formed when intersections of a virtually set XY plane and optical axes of light beams emitted from the three light emitting elements are perpendicularly projected on the surface of the substrate, is formed. Directions of the light emitted from the three light emitting elements are set such that at least either one of length and breadth dimensions of the second rectangle is larger than a corresponding one of length and breadth dimensions of the first rectangle.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 22, 2015
    Inventors: Kaname Hanada, Atsushi Kaji, Tsutomu Yamasaki, Hiroto Ishikawa, Tomiya Sonoda
  • Publication number: 20120188758
    Abstract: A lighting device (3) having a plurality of light-emitting diodes (9a-9d) arranged in a rectilinear fashion, where the plurality of light-emitting diodes (9a-9d) are divided into a plurality of blocks (a-d) in the direction of arrangement thereof, and, in the plurality of blocks (a-d), the values of the current supplied to the light-emitting diodes (9b, 9c) contained in the central blocks in the direction of arrangement are made lower than the values of the current supplied to the light-emitting diodes (9a, 9d) contained in the blocks located on the outside of the central blocks.
    Type: Application
    Filed: June 2, 2010
    Publication date: July 26, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kazuhiro Sugiyama, Tsutomu Yamasaki
  • Patent number: 6622686
    Abstract: In a cylinder head 1 of an internal combustion engine, communicating passageways 17, 18, 17′, 18′ for coolant are provided between combustion chambers 3 and pass-through holes 21 to 28 at positions which overlap straight lines L1, L2 connecting centers C2, C3 of the exhaust port openings 6a, 7a with centers C5 to C8 of the pass-through holes 25 to 28 and straight lines L3, L4 connecting centers C9, C10 of the intake port openings 4a, 5a with centers C11 to c14 of the pass-through holes 21 to 24 when a mating surface 2 of the cylinder head 1 with the cylinder block is viewed from the bottom. When peripheries of the exhaust port openings 6a, 7a and intake port openings 4a, 5a thermally expand, the suppression of thermal expansion by the bolts at fastening portions is alleviated by the communicating passageways 17, 18, 17′, 18′.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: September 23, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Komatsuda, Kaoru Aoki, Shinichi Takahashi, Takuya Takagi, Hiromu Nakamura, Tsutomu Yamasaki
  • Publication number: 20010013326
    Abstract: In a cylinder head 1 of an internal combustion engine, communicating passageways 17, 18, 17′, 18′ for coolant are provided between combustion chambers 3 and pass-through holes 21 to 28 at positions which overlap straight lines L1, L2 connecting centers C2, C3 of the exhaust port openings 6a, 7a with centers C5 to C8 of the pass-through holes 25 to 28 and straight lines L3, L4 connecting centers C9, C10 of the intake port openings 4a, 5a with centers C11 to c14 of the pass-through holes 21 to 24 when a mating surface 2 of the cylinder head 1 with the cylinder block is viewed from the bottom. When peripheries of the exhaust port openings 6a, 7a and intake port openings 4a, 5a thermally expand, the suppression of thermal expansion by the bolts at fastening portions is alleviated by the communicating passageways 17, 18, 17′, 18′.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 16, 2001
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Komatsuda, Kaoru Aoki, Shinichi Takahashi, Takuya Takagi, Hiromu Nakamura, Tsutomu Yamasaki
  • Patent number: D260530
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: September 1, 1981
    Assignee: Sharp Corporation
    Inventor: Tsutomu Yamasaki
  • Patent number: D261772
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: November 10, 1981
    Assignee: Sharp Corporation
    Inventors: Masaji Sawada, Tsutomu Yamasaki
  • Patent number: D264600
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: May 25, 1982
    Assignee: Sharp Corporation
    Inventors: Tsutomu Yamasaki, Harumi Tatsugami
  • Patent number: D266669
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: October 26, 1982
    Assignee: Sharp Corporation
    Inventors: Masaji Sawada, Tsutomu Yamasaki
  • Patent number: D267799
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: February 1, 1983
    Assignee: Sharp Corporation
    Inventors: Akira Esaki, Tsutomu Yamasaki, Keiji Sakata
  • Patent number: D268677
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: April 19, 1983
    Assignee: Sharp Corporation
    Inventors: Yoshihisa Ohie, Akira Esaki, Masaji Sawada, Tsutomu Yamasaki
  • Patent number: D297833
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 27, 1988
    Assignee: Sharp Corporation
    Inventors: Kazuo Kawabe, Tsutomu Yamasaki
  • Patent number: D297834
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: September 27, 1988
    Assignee: Sharp Corporation
    Inventors: Kazuo Kawabe, Tsutomu Yamasaki
  • Patent number: D305540
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: January 16, 1990
    Assignee: Sharp Corporation
    Inventors: Kazuo Kawabe, Tsutomu Yamasaki
  • Patent number: D305761
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: January 30, 1990
    Assignee: Sharp Corporation
    Inventors: Kazuo Kawabe, Tsutomu Yamasaki