Patents by Inventor Yoshinobu Ishikawa

Yoshinobu Ishikawa 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: 10634036
    Abstract: The present disclosure provides a method for molding a pipe body that can inexpensively mold a pipe body having a tapered portion radially outwardly projecting relative to a large-diameter portion. The method for molding a pipe body comprises: molding of a tubular body by bending an unfolded stock so as to wrap a core metal; and removal of the core metal from inside the tubular body. The core metal comprises a first core metal piece for molding a projecting portion of the tapered portion. During the molding of the tubular body, the first core metal piece at least partly abuts on an inner surface of the projecting portion of the tapered portion, and does not abut on an area of the inner surface of the large-diameter portion located in an opposite side of a central axis of the large-diameter portion from the projecting portion.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 28, 2020
    Assignee: FUTABA INDUSTRIAL CO., LTD.
    Inventors: Satoshi Ito, Masatoshi Miwa, Hiroki Minoura, Yoshinobu Ishikawa
  • Patent number: 10563870
    Abstract: A radiation heating device includes: a planar heat generation layer; a heat generation portion that is provided in the heat generation layer and that generates heat by energization; a plurality of heat radiation portions that are disposed in the heat generation layer and that radiate heat transferred from the heat generation portion; a low heat conduction portion that is provided around each of the heat radiation portions and that has a lower heat conductivity than the heat radiation portions; and a contact detection unit that detects contact of an object with the heat generation layer. The radiation heating device further includes an energization amount decrease unit that decreases an energization amount of the heat generation portion when the contact detection unit detects the contact of the object with the heat generation layer.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: February 18, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kimitake Ishikawa, Hideaki Kako, Hiroyasu Oide, Hideki Seki, Yoshinobu Sumida, Yasuhiro Sagou
  • Patent number: 10486986
    Abstract: The electrolyzed water-generating apparatus 1 includes: a first electrode chamber Da; a first water inlet path 4a connected to the first electrode chamber Da to supply the first electrode chamber Da with raw water from outside; a first water outlet path 7a connected to the first electrode chamber Da, and dispensing out of the first electrode chamber Da electrolyzed hydrogen water generated by electrolysis in the first electrode chamber Da; and a charge amount adjuster 10 connected to the electrolysis tank D to adjust an amount of electrical charge to be provided to the electrolyzed hydrogen water. The charge amount adjuster 10 adjusts, based on a flow rate of the raw water, the amount of the electrical charge per unit quantity of the generated electrolyzed hydrogen water through control of an electrolytic current or an electrolytic voltage, so that the adjusted amount of the electrical charge is constant.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: November 26, 2019
    Assignees: NIHON TRIM CO., LTD., NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY
    Inventors: Katsumi Ishikawa, Daiji Amenomori, Yoshinobu Koizumi, Yasuomi Hamauzu
  • Publication number: 20180202345
    Abstract: The present disclosure provides a method for molding a pipe body that can inexpensively mold a pipe body having a tapered portion radially outwardly projecting relative to a large-diameter portion. The method for molding a pipe body comprises: molding of a tubular body by bending an unfolded stock so as to wrap a core metal; and removal of the core metal from inside the tubular body. The core metal comprises a first core metal piece for molding a projecting portion of the tapered portion. During the molding of the tubular body, the first core metal piece at least partly abuts on an inner surface of the projecting portion of the tapered portion, and does not abut on an area of the inner surface of the large-diameter portion located in an opposite side of a central axis of the large-diameter portion from the projecting portion.
    Type: Application
    Filed: January 16, 2018
    Publication date: July 19, 2018
    Inventors: Satoshi Ito, Masatoshi Miwa, Hiroki Minoura, Yoshinobu Ishikawa
  • Patent number: 9352937
    Abstract: An escalator step includes a tread having a body section on which a plurality of convex sections are arranged in parallel, a riser connected to a rear end portion of the tread and having thereon a plurality of convex sections and a plurality of concave sections formed between the adjacent convex sections, and a shock absorbing cleat provided on a corner at which the riser and tread are connected to each other. The shock absorbing cleat includes a plurality of long convex sections which are arranged in parallel and a plurality of short convex sections which are arranged in parallel between the adjacent long convex sections. The shock absorbing cleat is formed of a polymeric material having a Young's modulus of 1000 MPa or less.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 31, 2016
    Assignee: TOSHIBA ELEVATOR KABUSHIKI KAISHA
    Inventors: Shigeo Nakagaki, Kosei Kamimura, Yoshinobu Ishikawa, Hideo Takahashi, Takayuki Kikuchi, Satoshi Yamaguchi
  • Patent number: 9309093
    Abstract: An escalator step includes: a tread that includes a body section wherein a plurality of convex sections, which are parallel in a travelling direction, are arranged in a width direction; a riser that is coupled at a rear end portion of the body section of the tread and on which a plurality of convex sections are arranged in a width direction, with troughs being formed between adjacent convex sections; and a shock absorbing cleat located in a notch formed in a corner portion where the riser and the tread are coupled together. On the shock absorbing cleat, a plurality of convex sections, arranged in a width direction and parallel to the travelling direction, rear end surfaces are flush with troughs of the riser, each of the convex sections of the shock absorbing cleat is shifted a half pitch from each of the convex sections of the riser.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: April 12, 2016
    Assignee: TOSHIBA ELEVATOR KABUSHIKI KAISHA
    Inventors: Shigeo Nakagaki, Kosei Kamimura, Yoshinobu Ishikawa, Takayuki Kikuchi, Hideo Takahashi, Satoshi Yamaguchi
  • Publication number: 20150251879
    Abstract: An escalator step includes: a tread that includes a body section wherein a plurality of convex sections, which are parallel in a travelling direction, are arranged in a width direction; a riser that is coupled at a rear end portion of the body section of the tread and on which a plurality of convex sections are arranged in a width direction, with troughs being formed between adjacent convex sections; and a shock absorbing cleat located in a notch formed in a corner portion where the riser and the tread are coupled together. On the shock absorbing cleat, a plurality of convex sections, arranged in a width direction and parallel to the travelling direction, rear end surfaces are flush with troughs of the riser, each of the convex sections of the shock absorbing cleat is shifted a half pitch from each of the convex sections of the riser.
    Type: Application
    Filed: February 12, 2015
    Publication date: September 10, 2015
    Applicant: TOSHIBA ELEVATOR KABUSHIKI KAISHA
    Inventors: Shigeo NAKAGAKI, Kosei Kamimura, Yoshinobu Ishikawa, Takayuki Kikuchi, Hideo Takahashi, Satoshi Yamaguchi
  • Publication number: 20150136563
    Abstract: An escalator step includes a tread having a body section on which a plurality of convex sections are arranged in parallel, a riser connected to a rear end portion of the tread and having thereon a plurality of convex sections and a plurality of concave sections formed between the adjacent convex sections, and a shock absorbing cleat provided on a corner at which the riser and tread are connected to each other. The shock absorbing cleat includes a plurality of long convex sections which are arranged in parallel and a plurality of short convex sections which are arranged in parallel between the adjacent long convex sections. The shock absorbing cleat is formed of a polymeric material having a Young's modulus of 1000 MPa or less.
    Type: Application
    Filed: August 25, 2014
    Publication date: May 21, 2015
    Applicant: TOSHIBA ELEVATOR KABUSHIKI KAISHA
    Inventors: Shigeo NAKAGAKI, Kosei KAMIMURA, Yoshinobu ISHIKAWA, Hideo TAKAHASHI, Takayuki KIKUCHI, Satoshi YAMAGUCHI
  • Patent number: 8562857
    Abstract: A process of producing positive electrode active material particles for a battery, comprising a step of providing a slurry comprising resin particles, a cationic surfactant and/or a polyvinyl alcohol derivative, lithium complex oxide particles, and a polar solvent; removing the polar solvent from the slurry to give a composition; and firing the composition and at the same time, removing the resin particles from the composition, wherein the cationic surfactant is a quaternary ammonium salt, the polyvinyl alcohol derivative is a polyvinyl alcohol into which a quaternary ammonium salt group has been introduced or which has been substituted by a quaternary ammonium salt group, and the resin particles have an average particle size of 0.1 to 20 ?m.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: October 22, 2013
    Assignee: Kao Corporation
    Inventors: Ryuichi Akagi, Yoshinobu Ishikawa, Kenichi Nishimura
  • Patent number: 8083048
    Abstract: A footstep guide rail (3) (rail body 3a) is arranged so that a level H of a horizontal surface is set at the position obtained by adding a designated offset ? to a tangential line L of a drive sprocket (9) and the footstep guide rail (3) is provided, at its one end on an introductory side of the drive sprocket (9), with a curved part (13). At a reference position closest to the drive sprocket (9), the horizontal surface of the footstep guide rail (3) is changed to the curved part (13). Consequently, it is possible to absorb velocity unevenness of one footstep roller approaching the drive sprocket (9).
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: December 27, 2011
    Assignee: Toshiba Elevator Kabushiki Kaisha
    Inventors: Yoshinobu Ishikawa, Tadashi Munakata, Yoshio Ogimura, Nobuhiko Teshima, Shigeo Nakagaki, Hitoshi Kawamoto, Kenichi Fujii, Yoshifumi Ikeda, Kazuhisa Hara, Takayuki Kikuchi
  • Publication number: 20110206990
    Abstract: A sintered lithium complex oxide characterized in that the sintered lithium complex oxide is constituted by sintering fine particles of a lithium complex oxide, the peak pore size giving the maximum differential pore volume is 0.80-5.00 ?m, the total pore volume is 0.10-2.00 mL/g, the average particle size is not less than the above-specified peak pore size but not more than 20 ?m, there is a sub-peak giving a differential pore volume not less than 10% of the maximum differential pore volume on the smaller pore size side with respect to the above-specified peak pore size, the pore size corresponding to the sub-peak is more than 0.50 ?m but not more than 2.00 ?m, the BET specific surface area of the sintered lithium complex oxide is 1.0-10.0 m2/g, and the half width of the maximum peak among X-ray diffraction peaks in an X-ray diffraction measurement is 0.12-0.30 deg.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 25, 2011
    Inventors: Ryuichi Akagi, Hiroaki Kitayama, Yoshinobu Ishikawa, Kenichi Nishimura, Takamitsu Saito, Tamaki Miura, Hiroshi Miyakubo
  • Publication number: 20110204301
    Abstract: A process of producing positive electrode active material particles for a battery, comprising a step of providing a slurry comprising resin particles, a cationic surfactant and/or a polyvinyl alcohol derivative, lithium complex oxide particles, and a polar solvent; removing the polar solvent from the slurry to give a composition; and firing the composition and at the same time, removing the resin particles from the composition, wherein the cationic surfactant is a quaternary ammonium salt, the polyvinyl alcohol derivative is a polyvinyl alcohol into which a quaternary ammonium salt group has been introduced or which has been substituted by a quaternary ammonium salt group, and the resin particles have an average particle size of 0.1 to 20 ?m.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 25, 2011
    Inventors: Ryuichi Akagi, Yoshinobu Ishikawa, Kenichi Nishimura
  • Patent number: 7887983
    Abstract: The present invention relates to a process for preparing a toner for electrophotography containing a resin binder and a colorant, including the step of preparing fine particles of the resin binder to have a volume-median particle size (D50) of from 0.05 to 3 ?m in an aqueous medium in the presence of a nonionic surfactant within a temperature range of from 10° C. below to 10° C. above a cloud point of the nonionic surfactant; and a toner for electrophotography obtained by the process as defined above, wherein the toner contains 60% by weight or more of a crystalline polyester and has a volume-median particle size (D50) of from 1 to 7 ?m. The toner obtained according to the process of the present invention can be suitably used, for example, in development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: February 15, 2011
    Assignee: Kao Corporation
    Inventors: Shinichi Sata, Yoshinobu Ishikawa, Nobumichi Kamiyoshi
  • Patent number: 7811739
    Abstract: The present invention relates to a process for producing a resin emulsion which includes the steps of (a) dispersing a resin containing acidic group in a basic aqueous medium at a temperature lower than a softening point of the resin; (b) neutralizing a dispersion obtained in the step (a) at a temperature not lower than a glass transition point of the resin and not higher than the softening point of the resin; and (c) adding an aqueous liquid to the dispersion neutralized in the step (b) at the temperature not lower than the glass transition point of the resin and not higher than the softening point of the resin to emulsify the resin in the aqueous medium. According to the present invention, the resin emulsion suitably usable for production of a toner for electrophotography can be efficiently produced without using an organic solvent and a special apparatus.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: October 12, 2010
    Assignee: KAO Corporation
    Inventors: Nobumichi Kamiyoshi, Shinichi Sata, Yoshinobu Ishikawa
  • Patent number: 7665594
    Abstract: Provided is a passenger conveyor including a plurality of steps (2) having step rollers (6 and 7), a step chain (8) circulatingly moving in conjunction with each of the plurality of steps (2), guide rails (13a, 13b, 14a and 14b) provided in an intermediate portion of a truss and guiding the step rollers (6 and 7) of each step (2), and an intermediate driving device (12) provided in the intermediate portion of the truss and configured to transmit a driving force to the step chain (8). A step-attitude changing zone (Z) for changing the attitude of each step (2) on a return path side is provided on the traveling path of the steps (2) on the return path side.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: February 23, 2010
    Assignee: Toshiba Elevator Kabushiki Kaisha
    Inventors: Takayuki Kikuchi, Yoshinobu Ishikawa, Yasuhiro Matsumoto
  • Patent number: 7600627
    Abstract: A conveyor apparatus is provided that is free of a pulsing motion in the circulating chains so as to provide a comfortable ride quality on its steps. The conveyor apparatus includes a step guide rail, a plurality of steps, a step chain, and a chain driving mechanism for driving the step chain. The chain driving mechanism includes a rotating and driving unit, a driving sprocket which is rotated by a driving force given by the rotating and driving unit, and a circulating chain for giving a thrust to the step chain. The circulating chain has chain links and hinges that are to be connected to the adjacent chain links. The chain link includes a placing surface on which the step roller is placed, and pressing surfaces that are in contact with step rollers.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: October 13, 2009
    Assignee: Toshiba Elevator Kabushiki Kaisha
    Inventors: Yoshinobu Ishikawa, Kenzo Tonoki, Taihei Koyama, Yoshio Ogimura, Takayuki Kikuchi, Nobuhiro Oku, Shin Murakami, Hitoshi Kawamoto
  • Patent number: 7568571
    Abstract: In order to suppress speed irregularity of step rollers (5) in a passenger conveyor, a bent section (17) is formed in a step guide rail (3) and a restraining member (18) is provided upstream thereof, the shape of the height of the bent section (17) and the restraining member (18) is corrected beforehand by the amount of the compression of resilient members of the step rollers (5), which are formed with such resilient members around their shafts, by the compressive force acting between the bent section (17) and restraining member (18). Thus generation of speed irregularity of the steps (4) is suppressed and passenger comfort is improved. Also, by providing a recess (3aa) in the step guide rail (3), gripping of the step rollers (5) as they execute rolling movement along the undersurface of the restraining member (18) from below can be avoided, thereby preventing damage to the step rollers (5), restraining member (18) and step guide rail (3).
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: August 4, 2009
    Assignee: Toshiba Elevator Kabushiki Kaisha
    Inventors: Yoshio Ogimura, Takayuki Kikuchi, Kazuya Yuge, Yoshinobu Ishikawa
  • Patent number: 7544459
    Abstract: The present invention relates to a process for producing a toner which includes the steps of emulsifying a resin binder containing a polyester in an aqueous medium to prepare an emulsion of the resin binder and adding a water-soluble nitrogen-containing compound having a molecular weight of 350 or less to the emulsion obtained in the previous step to aggregate emulsified particles contained in the emulsion. According to the present invention, the shape of toner particles can be controlled simply for a short production time by using a resin binder containing a polyester and using substantially no organic solvent, and further a toner having a narrow and sharp particle size distribution can be produced.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: June 9, 2009
    Assignee: KAO Corporation
    Inventors: Shinichi Sata, Yoshinobu Ishikawa, Nobumichi Kamiyoshi
  • Patent number: 7521166
    Abstract: A process for preparing a toner for electrophotography comprising a resin binder and a colorant, including the steps of (1) forming primary particles containing the resin binder and the colorant in an aqueous medium in the presence of a nonionic surfactant; and (2) aggregating the primary particles, and unifying the aggregated particle; and a toner for electrophotography obtainable by the process defined above, containing a crystalline polyester in an amount of 60% by weight or more in the toner, wherein the toner has a volume-median particle size (D50) of from 1 to 7 ?m. The toner for electrophotography obtained by the present invention can be suitably used in, for example, development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: April 21, 2009
    Assignee: Kao Corporation
    Inventors: Shinichi Sata, Yoshinobu Ishikawa, Nobumichi Kamiyoshi
  • Publication number: 20090008216
    Abstract: Provided is a passenger conveyor including a plurality of steps (2) having step rollers (6 and 7), a step chain (8) circulatingly moving in conjunction with each of the plurality of steps (2), guide rails (13a, 13b, 14a and 14b) provided in an intermediate portion of a truss and guiding the step rollers (6 and 7) of each step (2), and an intermediate driving device (12) provided in the intermediate portion of the truss and configured to transmit a driving force to the step chain (8). A step-attitude changing zone (Z) for changing the attitude of each step (2) on a return path side is provided on the traveling path of the steps (2) on the return path side.
    Type: Application
    Filed: February 17, 2006
    Publication date: January 8, 2009
    Applicant: Toshiba Elevator Kabushiki Kaisha
    Inventors: Takayuki Kikuchi, Yoshinobu Ishikawa, Yasuhiro Matsumoto