Patents by Inventor Tatsuya Kasahara

Tatsuya Kasahara 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: 20250163863
    Abstract: An engine unit, including: a plurality of cylinders respectively cooperating with a plurality of pistons; a plurality of individual exhaust pipes configured to allow exhaust gases from the plurality of cylinders to respectively flow therethrough; an exhaust manifold, including a merge portion into which the individual exhaust pipes merge, and a catalyst disposed downstream thereof; a group of pre-catalyst oxygen sensors disposed between the cylinders and the catalyst for all paths of the exhaust gases flowing into the catalyst from the plurality of cylinders; a post-catalyst oxygen sensor disposed in the exhaust manifold, downstream of the catalyst in the flow direction of the exhaust gas; and a control device configured to detect a cylinder-to-cylinder imbalance in air-fuel ratio between the plurality of cylinders, and a deterioration of the catalyst, using detection results of pre-catalyst and post-catalyst oxygen sensors without using an air-fuel ratio sensor.
    Type: Application
    Filed: January 21, 2025
    Publication date: May 22, 2025
    Inventors: Tatsuya KASAHARA, Yuta SHIMIZU, Tatsuya AOYAMA, Atsushi HIRANO, Kazuteru IWAMOTO, Atsuya HIDAI, Hisatoshi KINOSHITA
  • Patent number: 12098692
    Abstract: A straddled vehicle on which a part used for performing an inspection for a leak of gas from an evaporative emission system is mounted such that a weight balance of the straddled vehicle is maintained and mass concentrates includes a canister-integrated-leak-detection device that detects a leak of gas from an evaporative emission system. The canister-integrated-leak-detection device configured in a state where at least one of a vent valve or a suction pump is integrated with a canister is supported via a common attaching member to intersect with at least one of a virtual-left-right-center plane that includes a center in a left-right direction and is perpendicular to the left-right direction, a virtual-front-rear-center plane that includes a center in a front-rear direction and is perpendicular to the front-rear direction, or a virtual-up-down-center plane that includes a center in an up-down direction and is perpendicular to the up-down direction in the vehicle.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: September 24, 2024
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsuya Hidai, Hisatoshi Kinoshita, Kazuteru Iwamoto, Atsushi Hirano, Tatsuya Kasahara
  • Patent number: 11767076
    Abstract: A vehicle includes at least one of an electric vent valve configured to open and close an outside-air-introduction passage of a canister or an electric suction pump configured to suck gas in a gas passage through which the gas flows. The canister and at least one of the vent valve or the suction pump are disposed such that at least one of a virtual-left-right-center plane that includes a center in a left-right direction and is perpendicular to the left-right direction, a virtual-front-rear-center plane that includes a center in a front-rear direction and is perpendicular to the front-rear direction, or a virtual-up-down-center plane that includes a center in an up-down direction and is perpendicular to the up-down direction is located between a gravity center of the canister and at least one of a gravity center of the vent valve or a gravity center of the suction pump.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: September 26, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsuya Hidai, Hisatoshi Kinoshita, Kazuteru Iwamoto, Atsushi Hirano, Tatsuya Kasahara
  • Patent number: 11754022
    Abstract: A vehicle includes a frame, a seat, a storage box, an engine body at least partially overlapping with the seat when seen from above, an intake system component, a fuel system component, an evaporative emission system, a pressure sensor, and at least one of an electric vent valve or an electric suction pump. At least one of the pressure sensor, the vent valve, or the suction pump is supported by at least one of a frame, a storage box, an engine body, an intake system component, or a fuel system component.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: September 12, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsuya Hidai, Hisatoshi Kinoshita, Kazuteru Iwamoto, Atsushi Hirano, Tatsuya Kasahara
  • Patent number: 11629672
    Abstract: A gas-leak-detection device for detecting a gas leakage from an evaporative emission system includes an electric-wire-connection portion and a passage connection portion that are disposed to overlap with at least one of appearance components in a vehicle when the vehicle is seen in a viewing direction, and are disposed closer to the at least one appearance component than a center plane perpendicular to the viewing direction when the vehicle is in an upright state, the center plane being one of an imaginary-lateral-center plane that is an imaginary vertical plane perpendicular to the left-right direction, an imaginary-longitudinal-center plane that is an imaginary vertical plane including a center in the front-rear direction and being perpendicular to the front-rear direction, or an imaginary-vertical-center plane that is an imaginary horizontal plane including a center in the top-bottom direction and being perpendicular to the top-bottom direction.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: April 18, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsuya Hidai, Hisatoshi Kinoshita, Kazuteru Iwamoto, Atsushi Hirano, Tatsuya Kasahara
  • Patent number: 11598291
    Abstract: A gas-leak-detection device for detecting a gas leakage from an evaporative emission system includes an electric-wire-connection portion and a passage connection portion that are disposed to overlap with at least one of appearance components in a vehicle when the vehicle is seen in a viewing direction, and are disposed closer to the at least one appearance component than a center plane perpendicular to the viewing direction when the vehicle is in an upright state, the center plane being one of an imaginary-lateral-center plane that is an imaginary vertical plane perpendicular to the left-right direction, an imaginary-longitudinal-center plane that is an imaginary vertical plane including a center in the front-rear direction and being perpendicular to the front-rear direction, or an imaginary-vertical-center plane that is an imaginary horizontal plane including a center in the top-bottom direction and being perpendicular to the top-bottom direction.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: March 7, 2023
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsuya Hidai, Hisatoshi Kinoshita, Kazuteru Iwamoto, Atsushi Hirano, Tatsuya Kasahara
  • Publication number: 20220389888
    Abstract: A gas-leak-detection device for detecting a gas leakage from an evaporative emission system includes an electric-wire-connection portion and a passage connection portion that are disposed to overlap with at least one of appearance components in a vehicle when the vehicle is seen in a viewing direction, and are disposed closer to the at least one appearance component than a center plane perpendicular to the viewing direction when the vehicle is in an upright state, the center plane being one of an imaginary-lateral-center plane that is an imaginary vertical plane perpendicular to the left-right direction, an imaginary-longitudinal-center plane that is an imaginary vertical plane including a center in the front-rear direction and being perpendicular to the front-rear direction, or an imaginary-vertical-center plane that is an imaginary horizontal plane including a center in the top-bottom direction and being perpendicular to the top-bottom direction.
    Type: Application
    Filed: May 30, 2022
    Publication date: December 8, 2022
    Inventors: Atsuya HIDAI, Hisatoshi KINOSHITA, Kazuteru IWAMOTO, Atsushi HIRANO, Tatsuya KASAHARA
  • Publication number: 20220388594
    Abstract: A vehicle includes at least one of an electric vent valve configured to open and close an outside-air-introduction passage of a canister or an electric suction pump configured. to suck gas in a gas passage through which the gas flows. The canister and at least one of the vent valve or the suction pump are disposed such that at least one of a virtual-left-right-center plane that includes a center in a left-right direction and is perpendicular to the left-right direction, a virtual-front-rear-center plane that includes a center in a front-rear direction and is perpendicular to the front-rear direction, or a virtual-up-down-center plane that includes a center in an up-down direction and is perpendicular to the up-down direction is located between a gravity center of the canister and at least one of a gravity center of the vent valve or a gravity center of the suction pump.
    Type: Application
    Filed: May 30, 2022
    Publication date: December 8, 2022
    Inventors: Atsuya HIDAI, Hisatoshi KINOSHITA, Kazuteru IWAMOTO, Atsushi HIRANO, Tatsuya KASAHARA
  • Publication number: 20220389886
    Abstract: A vehicle includes a frame, a seat, a storage box, an engine body at least partially overlapping with the seat when seen from above, an intake system component, a fuel system component, an evaporative emission system, a pressure sensor, and at least one of an electric vent valve or an electric suction pump. At least one of the pressure sensor, the vent valve, or the suction pump is supported by at least one of a frame, a storage box, an engine body, an intake system component, or a fuel system component.
    Type: Application
    Filed: May 30, 2022
    Publication date: December 8, 2022
    Inventors: Atsuya HIDAI, Hisatoshi KINOSHITA, Kazuteru IWAMOTO, Atsushi HIRANO, Tatsuya KASAHARA
  • Publication number: 20220389887
    Abstract: A straddled vehicle on which a part used for performing an inspection for a leak of gas from an evaporative emission system is mounted such that a weight balance of the straddled vehicle is maintained and mass concentrates includes a canister-integrated-leak-detection device that detects a leak of gas from an evaporative emission system. The canister-integrated-leak-detection device configured in a state where at least one of a vent valve or a suction pump is integrated with a canister is supported via a common attaching member to intersect with at least one of a virtual-left-right-center plane that includes a center in a left-right direction and is perpendicular to the left-right direction, a virtual-front-rear-center plane that includes a center in a front-rear direction and is perpendicular to the front-rear direction, or a virtual-up-down-center plane that includes a center in an up-down direction and is perpendicular to the up-down direction in the vehicle.
    Type: Application
    Filed: May 30, 2022
    Publication date: December 8, 2022
    Inventors: Atsuya HIDAI, Hisatoshi KINOSHITA, Kazuteru IWAMOTO, Atsushi HIRANO, Tatsuya KASAHARA
  • Publication number: 20100093973
    Abstract: Herein disclosed is a water-soluble compound represented by the following general formula (I) or a salt thereof. The compound is a novel water-soluble compound having an inhibitory effect on the absorption of phosphorus in vivo. where the structural variables are defined herein.
    Type: Application
    Filed: August 27, 2009
    Publication date: April 15, 2010
    Applicant: AJINOMOTO CO., INC.
    Inventors: Tadakiyo Nakagawa, Hironobu Tsugeno, Naomi Matsutani, Masayuki Sugiki, Haruko Hirashima, Tatsuya Okuzumi, Tatsuya Kasahara, Wataru Miyanaga, Takashi Yamamoto, Masatsugu Noguchi, Kayo Matsumoto, Hideyuki Tanaka, Tomoyuki Konda
  • Patent number: 6696134
    Abstract: An objective of the invention is to provide a blown film which is excellent in terms of the optical characteristics, the tear strength and the rigidity as well as a method for producing the same, and the present invention provides a blown film whose surface morphology is a spherulite structure in which spherulites having diameters of about 3 &mgr;m or more exist and whose surface mean roughness Ra is about 30 nm or less as well as a method for producing the same.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: February 24, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masanori Fukada, Tatsuya Kasahara
  • Patent number: 6659610
    Abstract: A corneal endothelium analysis service method which provides an analysis service of corneal endothelium image data to a client through a network, includes a receiving step for receiving the corneal endothelium image data which is transmitted from a terminal owned by a client. The received corneal endothelium image data is analyzed and the analysis result is transmitted to the client terminal.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: December 9, 2003
    Assignee: Konan Medical, Inc.
    Inventor: Tatsuya Kasahara
  • Publication number: 20020127421
    Abstract: The object of this invention is to provide a blown film which even if it is thin, is strong, feels firm and has high transparency and this invention provides a blown film comprising a multi-layer film of 3 or more layers comprising surface layers made of linear low-density polyethylene 1 satisfying the following requirements (A) to (C) and middle layers, wherein at least one of the middle layers is a layer comprising a resin composition comprising low-density polyethylene and linear low-density polyethylene 2 having a crystallization temperature higher by at least 2° C. than the crystallization temperature of the linear low-density polyethylene 1, as well as a blown film having a haze value of 7% or less, a tear strength of at least 110 kN/m in the MD direction, and a 1% secant modulus (1% SM) of at least 190 MPa.
    Type: Application
    Filed: December 21, 2001
    Publication date: September 12, 2002
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Masanori Fukada, Tatsuya Kasahara, Tatsuhiro Nagamatsu
  • Publication number: 20020113942
    Abstract: A corneal endothelium analysis service method which provides an analysis service of corneal endothelium image data to a client through a network, includes a receiving step for receiving the corneal endothelium image data which is transmitted from a terminal owned by a client. The received corneal endothelium image data is analyzed and the analysis result is transmitted to the client terminal.
    Type: Application
    Filed: December 13, 2001
    Publication date: August 22, 2002
    Inventor: Tatsuya Kasahara
  • Publication number: 20020086139
    Abstract: An objective of the invention is to provide a blown film which is excellent in terms of the optical characteristics, the tear strength and the rigidity as well as a method for producing the same, and the present invention provides a blown film whose surface morphology is a spherulite structure in which spherulites having diameters of about 3 &mgr;m or more exist and whose surface mean roughness Ra is about 30 nm or less as well as a method for producing the same.
    Type: Application
    Filed: November 13, 2001
    Publication date: July 4, 2002
    Inventors: Masanori Fukada, Tatsuya Kasahara
  • Publication number: 20020080329
    Abstract: A corneal endothelium analysis system comprises: a terminal; and a server connected to the terminal through a network. The terminal comprises means for photographing corneal endothelium and first transmission/receiving means for transmitting an image of the photographed corneal endothelium to the server and receiving an analysis result from the server, and the server comprises second transmission/receiving means for receiving the image of the corneal endothelium from the terminal and transmitting the analysis result to the terminal, and means for analyzing the image of the corneal endothelium.
    Type: Application
    Filed: November 14, 2001
    Publication date: June 27, 2002
    Inventor: Tatsuya Kasahara
  • Patent number: 5757461
    Abstract: A method for displaying a photographing point of a cornea which is used in an apparatus for obtaining video images of corneal cells.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: May 26, 1998
    Assignee: Konan Inc.
    Inventors: Tatsuya Kasahara, Yoichi Hamada, Yoshizo Ikegami
  • Patent number: 5557351
    Abstract: An apparatus for obtaining visual images of cornea cells, which allows magnified images of cornea cells to be easily obtained at required important sites of the cornea cells including a center site one by one by changing over the site, by leading the view axis of the subject and without requiring the decision of the operator in obtaining magnified images of cornea cells. Also, in order to allow a correct imaging site to be known, an imaging position mark is displayed at a correct position on the eyeball surface on the eye-front imaging screen of a TV camera. For illuminating through a slit an eyeball surface (2) and forming a magnified image of cornea cells of the subject part on an image-receiving surface (34) of a TV camera (35) via a magnification-imaging optical system based on the illumination light, a center view target and a plurality of view targets of required positions around the center view target are set by visible-light emitting diodes (27), (27.sub.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: September 17, 1996
    Assignee: Konan Inc.
    Inventors: Tatsuya Kasahara, Yoichi Hamada, Yoshizo Ikegami
  • Patent number: 5548354
    Abstract: An apparatus for observing and photographing cornea cells including an indicator projecting means, and eye-front observation optical system, an illuminating system for illuminating through a slit the eyeball surface obliquely, an enlarged imaging optical system for forming an enlarged image of the subject part by a TV camera based on the illuminating light, and a cornea self-focusing detector which is automatically moved in X and Y directions with respect to the optical axis of the eye-front observation optical system such that the light spot on the monitor screen by the reflected light from the subject part of the position detection indicator is brought to a specified position on the screen whereby an enlarged image of the cells is recorded and photographed and displayed simultaneously with the eye-front image in which the light spot of the photographing sight is positioned.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: August 20, 1996
    Assignee: Konan Common Co., Ltd.
    Inventors: Tatsuya Kasahara, Hamada Yoichi