Patents by Inventor Yoshifumi Ito

Yoshifumi Ito 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: 11965801
    Abstract: A measurement system includes a measurement device including a light source, and a first power meter, and one or a plurality of connection members each configured to optically connect a pair of optical fiber lines of the plurality of optical fiber lines. A first optical fiber line of the pair of optical fiber lines includes a first end and a second end, a second optical fiber line of the pair of optical fiber lines includes a third end and a fourth end, the one or plurality of connection members optically connect the second end to the fourth end, the light source causes testing light to be incident on the first end, and the first power meter measures first intensity of first output light output from the third end by causing the testing light to propagate through the pair of optical fiber lines.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: April 23, 2024
    Assignees: SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuya Masuda, Tomohiko Ueda, Kenichiro Otsuka, Tsuneari Ito, Tetsufumi Tsuzaki, Yoshifumi Hishikawa, Hitoshi Hatayama
  • Publication number: 20240102429
    Abstract: An engine control apparatus includes a control system including one or more memories and one or more processors communicably coupled to one another, and controlling ignition timing of a spark plug. The one or more memories hold first and second ignition timing maps that provide setting of the ignition timing for each engine operation point. The one or more processors determine the number of injection stages of an injector. When the number of injection stages of the injector is the first number of injection stages, the one or more processors control the ignition timing of the spark plug based on the first ignition timing map. When the number of injection stages of the injector is the second number of injection stages greater than the first number of injection stages, the one or more processors control the ignition timing of the spark plug based on the second ignition timing map.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 28, 2024
    Applicant: SUBARU CORPORATION
    Inventors: Gaku ITO, Yoshifumi YAMAZAKI
  • Patent number: 11919547
    Abstract: A vehicle control device includes a driving controller controls one of or both steering and acceleration/deceleration of the vehicle, and a mode determinator determines any of a plurality of driving modes including a first driving mode and a second driving mode as a driving mode of the vehicle, in which tasks imposed on a driver in the second driving mode are less significant than in the first driving mode and one of or both steering and acceleration/deceleration of the vehicle are controlled by the driving controller, the driving controller controls the vehicle in the second driving mode, and the driving mode is changed to the first driving mode when an abnormality occurs in a combination switch, combination switch related equipment which is connected between the driving controller and the combination switch via a communication line, or communication which is performed by the combination switch and the driving controller.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: March 5, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuichi Komori, Yoshifumi Nakamura, Takuma Kobayashi, Shingo Ito, Ayumu Horiba, Tadahiko Kanoh
  • Publication number: 20240035114
    Abstract: Dust Da containing zinc and iron is charged in a rotative cylindrical kiln base body 11 of an indirect-heating rotary kiln 10 and is subjected to heat treatment in the kiln base body so that zinc contained in the dust is volatilized. The volatilized zinc is guided to a treatment device 30 through an exhaust pipe 31 disposed at a discharge part 16 of the rotary kiln and is recovered. A residue Db resulting from the treatment in the kiln base body is transferred from a residue outlet 16b disposed at the discharge part 16 of the rotary kiln to a burner device 40, in which the residue is combusted and heated.
    Type: Application
    Filed: September 9, 2021
    Publication date: February 1, 2024
    Inventors: Yoshifumi ITO, Toshiyuki OKUMURA
  • Patent number: 11786969
    Abstract: Provided is a method for producing a sliding member formed by impregnating a porous base member made of a bronze-based alloy with a resin material, the sliding member including a sliding surface where both the porous base member and the resin material are exposed, the method including: a step of preparing a back metal layer; a porous base member formation step of forming the porous base member by depositing particles of the bronze-based alloy on a surface of the back metal layer and sintering the particles; an impregnation step of impregnating the porous base member with the resin material; a deformation step of deforming an end edge of the back metal layer in a direction away from the sliding surface; and a cutting step of cutting the porous base member impregnated with the resin material to form the sliding surface.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: October 17, 2023
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Ayako Yamamoto, Yoshifumi Ito, Norihito Watanabe, Hirotaka Inoue, Akihiro Matsuoka
  • Publication number: 20220412404
    Abstract: The present invention provides a sliding member which enables further reduction of friction and improvement of seizure resistance without deteriorating wear resistance of a sliding surface. The sliding member includes a porous metal base material, and a resin material with which the porous metal base material is impregnated. The sliding member includes an exposed sliding surface. The sliding surface includes a top surface made of the resin material, and a bottom surface made of the porous metal base material. A height from the bottom surface to the top surface is 10 to 30 ?m, and the resin material includes fluorine resin.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 29, 2022
    Inventors: Ayako YAMAMOTO, Yoshifumi ITO
  • Publication number: 20220314318
    Abstract: Provided is a method for producing a sliding member formed by impregnating a porous base member made of a bronze-based alloy with a resin material, the sliding member including a sliding surface where both the porous base member and the resin material are exposed, the method including: a step of preparing a back metal layer; a porous base member formation step of forming the porous base member by depositing particles of the bronze-based alloy on a surface of the back metal layer and sintering the particles; an impregnation step of impregnating the porous base member with the resin material; a deformation step of deforming an end edge of the back metal layer in a direction away from the sliding surface; and a cutting step of cutting the porous base member impregnated with the resin material to form the sliding surface.
    Type: Application
    Filed: April 1, 2022
    Publication date: October 6, 2022
    Inventors: Ayako YAMAMOTO, Yoshifumi ITO, Norihito WATANABE, Hirotaka INOUE, Akihiro MATSUOKA
  • Patent number: 11236780
    Abstract: A sliding member includes a back-metal layer and a sliding layer on the back-metal layer, and the sliding layer has a sliding surface. The sliding layer includes a synthetic resin and fibrous particles dispersed in the synthetic resin. A volume ratio of the fibrous particles in the sliding layer is 1 to 15%, and the fibrous particles are made of semi-graphite having a nano indenter hardness of 1000 to 5000 MPa. An average aspect ratio of the fibrous particles is not less than 5, where an aspect ratio is defined as a ratio of a major axis to a minor axis of the fibrous particle viewed from the sliding surface. An average grain size of the fibrous particles in cross-sectional view perpendicular to the sliding surface is 5 to 50 ?m.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: February 1, 2022
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Yoshifumi Ito, Yu Suzuki, Takayoshi Yamauchi
  • Patent number: 11015073
    Abstract: An ink jet ink composition contains a disperse dye, and a compound represented by the following formula (1): In the formula, Ar1 and Ar2 each independently represent an aryl group; R1 and R2 each independently represent a chemical species selected from the group consisting of hydrogen, alkyl groups having a carbon number of 1 to 3, a sulfo group, —O—SO3H, a carboxy group, and a hydroxy group; and n's each independently represent an integer of 0 to 5. The content of the compound represented by formula (1) is 0.1% by mass to 20% by mass relative to the total mass of the ink jet ink composition.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 25, 2021
    Inventors: Tomohiro Fujita, Chikako Fujita, Kana Ozaki, Yoshifumi Ito
  • Publication number: 20210140475
    Abstract: A sliding member includes a back-metal layer and a sliding layer on the back-metal layer, and the sliding layer has a sliding surface. The sliding layer includes a synthetic resin and fibrous particles dispersed in the synthetic resin. A volume ratio of the fibrous particles in the sliding layer is 1 to 15%, and the fibrous particles are made of semi-graphite having a nano indenter hardness of 1000 to 5000 MPa. An average aspect ratio of the fibrous particles is not less than 5, where an aspect ratio is defined as a ratio of a major axis to a minor axis of the fibrous particle viewed from the sliding surface. An average grain size of the fibrous particles in cross-sectional view perpendicular to the sliding surface is 5 to 50 ?m.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 13, 2021
    Inventors: Yoshifumi Ito, Yu Suzuki, Takayoshi Yamauchi
  • Publication number: 20200216695
    Abstract: An ink jet ink composition contains a disperse dye, and a compound represented by the following formula (1): In the formula, Ar1 and Ar2 each independently represent an aryl group; R1 and R2 each independently represent a chemical species selected from the group consisting of hydrogen, alkyl groups having a carbon number of 1 to 3, a sulfo group, —O—SO3H, a carboxy group, and a hydroxy group; and n's each independently represent an integer of 0 to 5. The content of the compound represented by formula (1) is 0.1% by mass to 20% by mass relative to the total mass of the ink jet ink composition.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Inventors: Tomohiro FUJITA, Chikako FUJITA, Kana OZAKI, Yoshifumi ITO
  • Patent number: 10626281
    Abstract: An ink jet ink composition contains a disperse dye, and a compound represented by the following formula (1): In the formula, Ar1 and Ar2 each independently represent an aryl group; R1 and R2 each independently represent a chemical species selected from the group consisting of hydrogen, alkyl groups having a carbon number of 1 to 3, a sulfo group, —O—SO3H, a carboxy group, and a hydroxy group; and n's each independently represent an integer of 0 to 5.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: April 21, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Tomohiro Fujita, Chikako Fujita, Kana Ozaki, Yoshifumi Ito
  • Publication number: 20180273763
    Abstract: A printing ink composition contains a disperse dye, a dispersant, and water, in which the dispersant contains one or more compounds represented by: wherein each Ar independently represents an aromatic ring having 6 to 24 carbon atoms, R1 and R2 independently represent a substituent selected from the group consisting of H, OCH3, OH, COOH, SO3H, OSO3H, an alkyl group having 1 to carbon atoms, and a salt thereof, R3 represents a substituent selected from the group consisting of OH, COOH, SO3H, OSO3H, and a salt thereof, R4 represents a substituent selected from the group consisting of H, OCH3, OC2H5, an alkyl group having 1 to 3 carbon atoms, and a salt thereof, the substituent introduction numbers a, b, c, and d each represent an integer of 1 to 8, and the number of repetitions m represents an integer of 1 to 50.
    Type: Application
    Filed: November 30, 2017
    Publication date: September 27, 2018
    Inventors: Yoshifumi ITO, Tomohiro FUJITA, Toshiki HARA, Yukiko II
  • Patent number: 10041537
    Abstract: According to the present invention, there is provided a slide member for a shock absorber of a vehicle including a back metal, a porous sintered metal layer containing a porous sintered metal formed on the back metal and a resin with which the porous sintered metal is impregnated and covered, and a resin slide layer formed on the porous sintered metal layer and having a smooth slide surface, and the slide member is formed in a cylindrical shape so that the resin slide layer is disposed on an inner peripheral side. The resin slide layer is composed of polytetrafluoroethylene and a plurality of granular elements dispersed in the polytetrafluoroethylene, and the granular element is composed of molybdenum disulfide and molybdenum trioxide, and/or tungsten disulfide and tungsten trioxide.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: August 7, 2018
    Assignee: Daido Metal Company Ltd.
    Inventors: Hideki Iwata, Yoshifumi Ito
  • Publication number: 20180094153
    Abstract: An ink jet ink composition contains a disperse dye, and a compound represented by the following formula (1): In the formula, Ar1 and Ar2 each independently represent an aryl group; R1 and R2 each independently represent a chemical species selected from the group consisting of hydrogen, alkyl groups having a carbon number of 1 to 3, a sulfo group, —O—SO3H, a carboxy group, and a hydroxy group; and n's each independently represent an integer of 0 to 5.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Inventors: Tomohiro FUJITA, Chikako FUJITA, Kana OZAKI, Yoshifumi ITO
  • Patent number: 9841732
    Abstract: A watch external part of the present invention is equipped with a substrate and a coating formed using an aerosol deposition method. The coating is selectively provided at a portion of a site observable in a state with the watch external part incorporated in a watch. The substrate is made of a material including one type or two or more types selected from a group consisting of sapphire glass, quartz, and plastic. The watch external part is further equipped with a ground layer having at least one layer between the substrate and the coating.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: December 12, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Yoshifumi Ito
  • Publication number: 20160273583
    Abstract: According to the present invention, there is provided a slide member for a shock absorber of a vehicle including a back metal, a porous sintered metal layer containing a porous sintered metal formed on the back metal and a resin with which the porous sintered metal is impregnated and covered, and a resin slide layer formed on the porous sintered metal layer and having a smooth slide surface, and the slide member is formed in a cylindrical shape so that the resin slide layer is disposed on an inner peripheral side. The resin slide layer is composed of polytetrafluoroethylene and a plurality of granular elements dispersed in the polytetrafluoroethylene, and the granular element is composed of molybdenum disulfide and molybdenum trioxide, and/or tungsten disulfide and tungsten trioxide.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Inventors: HIDEKI IWATA, YOSHIFUMI ITO
  • Publication number: 20150212493
    Abstract: A watch external part of the present invention is equipped with a substrate and a coating formed using an aerosol deposition method. The coating is selectively provided at a portion of a site observable in a state with the watch external part incorporated in a watch. The substrate is made of a material including one type or two or more types selected from a group consisting of sapphire glass, quartz, and plastic. The watch external part is further equipped with a ground layer having at least one layer between the substrate and the coating.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 30, 2015
    Inventor: Yoshifumi ITO
  • Publication number: 20150212492
    Abstract: A watch external part of the present invention is equipped with a substrate and a coating formed using a gas deposition method. The coating is selectively provided at a portion of a site observable in a state with the watch external part incorporated in a watch. The substrate is made of a material including one type or two or more types selected from a group consisting of sapphire glass, quartz, and plastic. The watch external part is further equipped with a ground layer having at least one layer between the substrate and the coating.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 30, 2015
    Inventor: Yoshifumi ITO
  • Publication number: 20130260097
    Abstract: Disclosed is a resin sliding member, including: 0.5 to 25 vol % of calcium fluoride dispersed as particles; and a polyether ether ketone resin as a remainder. The calcium fluoride is crystalline, and a peak intensity of a (111) plane of the calcium fluoride exposed on a sliding surface is larger than a peak intensity of a (220) plane.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 3, 2013
    Applicant: DAIDO METAL COMPANY LTD.
    Inventors: Yohei TAKADA, Yoshifumi ITO