Patents by Inventor Yasuo Okamoto

Yasuo Okamoto 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: 9272327
    Abstract: A method for producing an aluminum-alloy shaped product, includes a step of forging a continuously cast rod of aluminum alloy serving as a forging material, in which the aluminum alloy contains Si in an amount of 10.5 to 13.5 mass %, Fe in an amount of 0.15 to 0.65 mass %, Cu in an amount of 2.5 to 5.5 mass % and Mg in an amount of 0.3 to 1.5 mass %, and heat treatment and heating steps including a step of subjecting the forging material to pre-heat treatment, a step of heating the forging material during a course of forging of the forging material and a step of subjecting a shaped product to post-heat treatment, the pre-heat treatment including treatment of maintaining the forging material at a temperature of ?10 to 480° C. for two to six hours.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 1, 2016
    Assignee: SHOWA DENKO K.K.
    Inventor: Yasuo Okamoto
  • Patent number: 9188042
    Abstract: A urea quality diagnosis system capable of accurately diagnosing the quality of an aqueous urea solution in a urea tank. A concentration and a level (L) of an aqueous urea solution inside a urea tank 16 are detected, and the quality of the aqueous urea solution is diagnosed based on a detected value of the concentration of the aqueous urea solution when the level L is equal to or higher than a predetermined value.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: November 17, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Hirotaka Takahashi, Takeshi Fukuoka, Tomoyuki Itou, Yasuo Okamoto, Tatsuo Mashiko
  • Publication number: 20140326368
    Abstract: A method for producing an aluminum-alloy shaped product, includes a step of forging a continuously cast rod of aluminum alloy serving as a forging material, in which the aluminum alloy contains Si in an amount of 10.5 to 13.5 mass %, Fe in an amount of 0.15 to 0.65 mass %, Cu in an amount of 2.5 to 5.5 mass % and Mg in an amount of 0.3 to 1.5 mass %, and heat treatment and heating steps including a step of subjecting the forging material to pre-heat treatment, a step of heating the forging material during a course of forging of the forging material and a step of subjecting a shaped product to post-heat treatment, the pre-heat treatment including treatment of maintaining the forging material at a temperature of ?10 to 480° C. for two to six hours.
    Type: Application
    Filed: June 19, 2014
    Publication date: November 6, 2014
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuo OKAMOTO
  • Patent number: 8828157
    Abstract: A method for producing an aluminum-alloy shaped product, includes a step of forging a continuously cast rod of aluminum alloy serving as a forging material, in which the aluminum alloy contains Si in an amount of 10.5 to 13.5 mass %, Fe in an amount of 0.15 to 0.65 mass %, Cu in an amount of 2.5 to 5.5 mass % and Mg in an amount of 0.3 to 1.5 mass %, and heat treatment and heating steps including a step of subjecting the forging material to pre-heat treatment, a step of heating the forging material during a course of forging of the forging material and a step of subjecting a shaped product to post-heat treatment, the pre-heat treatment including treatment of maintaining the forging material at a temperature of ?10 to 480° C. for two to six hours.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: September 9, 2014
    Assignee: Showa Denko K.K.
    Inventor: Yasuo Okamoto
  • Publication number: 20140227138
    Abstract: 2 A method and a selective-reduction catalyst system to remove foreign matter which may cause closure of a urea water path of a supply module and therearound. A urea water pressure is changed in the urea water path to remove the foreign matter.
    Type: Application
    Filed: August 23, 2012
    Publication date: August 14, 2014
    Applicant: ISUZU MOTORS LIMITED
    Inventors: Yasuo Okamoto, Yuuta Kageyama, Koji Sakumoto
  • Publication number: 20120304744
    Abstract: A urea quality diagnosis system capable of accurately diagnosing a quality of an aqueous urea solution in a urea tank. A concentration and a level L of an aqueous urea solution inside a urea tank 16 are detected, and the quality of the aqueous urea solution is diagnosed based on a detected value of the concentration of the aqueous urea solution when the level L is equal to or higher than a predetermined value.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 6, 2012
    Applicant: Isuzu Motors Limited
    Inventors: Hirotaka Takahashi, Takeshi Fukuoka, Tomoyuki Itou, Yasuo Okamoto, Tatsuo Mashiko
  • Publication number: 20120241055
    Abstract: A brake piston having required mechanical strength is produced through fewer steps than in conventional processes. An aluminum alloy containing Si and Mg, wherein the aluminum alloy has a Si concentration (CSi, mass %) and a Mg concentration (CMg mass %) falling within a range surrounded by four points A (0.75, 1.25), B (1.4, 1), C (1.4, 0.6), and D (0.75, 0.85) in terms of a relationship thereof (CSi, CMg), and further has a Cu concentration of 0.07 to 0.9 mass %, a Mn concentration of 0.1 to 0.9 mass %, a Ti concentration of 0.005 to 0.15 mass %, a Cr concentration of 0.2 mass % or less, and a Fe concentration of 0.5 mass or less %, the balance being A1 and inevitable impurities is cast to obtain a rod-shaped ingot. The rod-shaped ingot, without being subjected to a homogenization treatment, is straightened within 3 (three) days after the casting. The straightened rod-shaped ingot is cut into a given thickness to obtain a forging raw material.
    Type: Application
    Filed: October 15, 2010
    Publication date: September 27, 2012
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuo Okamoto
  • Patent number: 8256939
    Abstract: A straddle-type vehicle that reliably inhibits entry of fluid to a tail lamp unit. An extending member protrudes upward from a rear fender and extends in a vehicle width direction. The extending member covers a sealing member of flasher lenses and a tail lamp lens when the motorcycle is viewed from the rear. A gutter guides fluid that enters a space between the extending member and the tail lamp unit.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 4, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Akira Onoda, Yasuo Okamoto
  • Patent number: 8157934
    Abstract: A wear-resistant aluminum alloy material excellent in workability and wear-resistance is provided. A wear-resistant aluminum alloy material excellent in workability includes Si: 13 to 15 mass %, Cu: 5.5 to 9 mass %, Mg: 0.2 to 1 mass %, Ni: 0.5 to 1 mass %, P: 0.003 to 0.03 mass %, and the balance being Al and inevitable impurities. An average particle diameter of primary Si particles is 10 to 30 ?m, an area occupancy rate of the primary Si particles in cross-section is 3 to 12%, an average particle diameter of intermetallic compounds is 1.5 to 8 ?m, and an area occupancy rate of the intermetallic compounds in cross-section is 4 to 12%.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: April 17, 2012
    Assignee: Showa Denko K.K.
    Inventor: Yasuo Okamoto
  • Patent number: 7731238
    Abstract: A straddle-type vehicle that reliably leads fuel that overflows from a fuel fill opening away to a safe area without specialist components. A fuel tank includes a recess portion that is formed around a fuel fill opening, and a raised section that is formed to the outer side of the recess portion and that is at a higher position than the recess portion.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: June 8, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yasuyuki Otsubo, Yasuo Okamoto
  • Patent number: 7690463
    Abstract: A straddle-type vehicle that adequately and smoothly sucks air into an air cleaner arranged between a front wheel and a leg shield while inhibiting foreign matter from being drawn thereinto. An intake port of the air cleaner is opened rearwardly. The leg shield is formed with a recess that surrounds the air cleaner. The recess includes a round portion along a direction in which the intake 61a is opened.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 6, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yasuo Okamoto
  • Publication number: 20100006192
    Abstract: The present invention are to provide a method for producing an aluminum-alloy shaped product that exhibits high-temperature mechanical strength superior to that of a conventional aluminum-alloy forged product. The present invention provides a method for producing an aluminum-alloy shaped product, comprising a step of forging a continuously cast rod of aluminum-alloy serving as a forging material, in which the aluminum-alloy contains Si in an amount of 10.5 to 13.5 mass %, Cu in an amount of 2.5 to 6 mass %, Mg in an amount of 0.3 to 1.5 mass % and Ni in an amount of 0.8 to 4%, and satisfies a relational expression of “Ni(% bymass)?(?0.68×Cu(% by mass)+4.
    Type: Application
    Filed: July 31, 2007
    Publication date: January 14, 2010
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuo Okamoto
  • Publication number: 20090301616
    Abstract: A wear-resistant aluminum alloy material excellent in workability and wear-resistance is provided. A wear-resistant aluminum alloy material excellent in workability includes Si: 13 to 15 mass %, Cu: 5.5 to 9 mass %, Mg: 0.2 to 1 mass %, Ni: 0.5 to 1 mass %, P: 0.003 to 0.03 mass %, and the balance being Al and inevitable impurities. An average particle diameter of primary Si particles is 10 to 30 ?m, an area occupancy rate of the primary Si particles in cross-section is 3 to 12%, an average particle diameter of intermetallic compounds is 1.5 to 8 ?m, and an area occupancy rate of the intermetallic compounds in cross-section is 4 to 12%.
    Type: Application
    Filed: November 8, 2007
    Publication date: December 10, 2009
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuo Okamoto
  • Patent number: 7434555
    Abstract: A number of embodiments of double overhead cam shaft V type engines wherein the drive arrangement for the camshafts permits not only a compact design but also one in which the timing loadings are decreased to improve engine life, performance and reduced servicing.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: October 14, 2008
    Assignee: Yamaha Motor Company Ltd
    Inventor: Yasuo Okamoto
  • Publication number: 20080239998
    Abstract: There is provided a SIP communication system or the like which, by performing SIP communication between a terminal and a call control server, performs position registration or calling control of the terminal and provides one or multiple supplementary services for an incoming/outgoing call in accordance with subscriber information managed by a home subscriber server, wherein the call control server is provided with supplementary service function sections for providing the multiple supplementary services, respectively, and a service management section for causing the services of the multiple supplementary service function sections to be distributed and executed while managing conflicts.
    Type: Application
    Filed: March 17, 2008
    Publication date: October 2, 2008
    Inventors: KENICHI OGAMI, Yasuo Okamoto, Hajime Komura
  • Publication number: 20080156558
    Abstract: A straddle-type vehicle that reliably leads fuel that overflows from a fuel fill opening away to a safe area without specialist components. A fuel tank includes a recess portion that is formed around a fuel fill opening, and a raised section that is formed to the outer side of the recess portion and that is at a higher position than the recess portion.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 3, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Yasuyuki OTSUBO, Yasuo OKAMOTO
  • Publication number: 20080158895
    Abstract: A straddle-type vehicle that reliably inhibits entry of fluid to a tail lamp unit. An extending member protrudes upward from a rear fender and extends in a vehicle width direction. The extending member covers a sealing member of flasher lenses and a tail lamp lens when the motorcycle is viewed from the rear. A gutter guides fluid that enters a space between the extending member and the tail lamp unit.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 3, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Akira ONODA, Yasuo OKAMOTO
  • Publication number: 20080156557
    Abstract: A straddle-type vehicle that adequately and smoothly sucks air into an air cleaner arranged between a front wheel and a leg shield while inhibiting foreign matter from being drawn thereinto. An intake port of the air cleaner is opened rearwardly. The leg shield is formed with a recess that surrounds the air cleaner. The recess includes a round portion along a direction in which the intake 61a is opened.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 3, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yasuo OKAMOTO
  • Publication number: 20070144629
    Abstract: A method for producing an aluminum-alloy shaped product, includes a step of forging a continuously cast rod of aluminum alloy serving as a forging material, in which the aluminum alloy contains Si in an amount of 10.5 to 13.5 mass %, Fe in an amount of 0.15 to 0.65 mass %, Cu in an amount of 2.5 to 5.5 mass % and Mg in an amount of 0.3 to 1.5 mass %, and heat treatment and heating steps including a step of subjecting the forging material to pre-heat treatment, a step of heating the forging material during a course of forging of the forging material and a step of subjecting a shaped product to post-heat treatment, the pre-heat treatment including treatment of maintaining the forging material at a temperature of ?10 to 480° C. for two to six hours.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 28, 2007
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuo Okamoto
  • Publication number: 20060266315
    Abstract: A number of cylinder head arrangements that provide low cost and easy assembly of their various components with minimum labor and reduced necessity for line boring to reduce both manufacturing and assembly operation without adversely affecting performance.
    Type: Application
    Filed: May 30, 2006
    Publication date: November 30, 2006
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tsunero Hamada, Yasuo Okamoto