Patents by Inventor Yasushi Ichikawa

Yasushi Ichikawa 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: 20210123918
    Abstract: The invention relates to a pancreatic cancer determination marker, a pancreatic cancer determination method, a method for acquiring data for determining a pancreatic cancer, a pancreatic cancer determination kit, and the like.
    Type: Application
    Filed: June 21, 2019
    Publication date: April 29, 2021
    Applicants: FUJIFILM WAKO PURE CHEMICAL CORPORATION, PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Nana KAWASAKI, Yuki OHTA, Yasushi ICHIKAWA, Yasuo TERAUCHI, Wataru SHIBATA
  • Patent number: 10651486
    Abstract: A fuel cell system includes a fuel cell stack configured to generate power according to a load, a fuel tank configured to store fuel gas, a pressure regulating valve configured to regulate a pressure of the fuel gas supplied from the fuel tank to the fuel cell stack, a purge valve configured to purge the fuel gas discharged from the fuel cell stack and a controller for controlling the system. The controller includes a pulsating unit configured to cause a fuel gas pressure of the fuel cell stack to pulsate, and a pressure increasing rate setting unit configured to set a pressure increasing rate of the pulsation of the fuel gas pressure according to an operating state.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 12, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Susumu Maeshima, Keigo Ikezoe, Yasushi Ichikawa, Takahiro Fujii, Takashi Naka, Daigo Iwasaki
  • Patent number: 10367212
    Abstract: A fuel cell system supplies anode gas and cathode gas to a fuel cell and causes the fuel cell to generate power according to a load. The fuel cell system includes a supply passage configured to supply the anode gas to the fuel cell, a pressure control valve that provided in the supply passage and configured to adjust a pressure of the anode gas supplied to the fuel cell, and a discharge passage configured to discharge the anode gas from the fuel cell. The fuel cell system includes an ejector that provided in the supply passage configured to suck the anode gas discharged to the discharge passage and circulate the anode gas to the fuel cell by the anode gas supplied from the pressure control valve, and a control unit configured to pulsate the pressure of the anode gas supplied to the ejector.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: July 30, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Yasushi Ichikawa
  • Patent number: 10193168
    Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 29, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hidetaka Nishimura, Yasushi Ichikawa
  • Publication number: 20180006318
    Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hidetaka NISHIMURA, Yasushi ICHIKAWA
  • Patent number: 9814940
    Abstract: A golf ball includes a relatively large polymer core and has a soft ball compression. The polymer is, in the illustrated embodiments, a highly neutralized acid polymer. The golf ball may, optionally, include an outer core made of a different material, such as a thermoset polybutadiene rubber. The golf ball may, optionally, include a mantle layer made of an ionomer material. The inner core having a diameter of between 24 mm and 40 mm, and in some designs, between 28 mm and 32 mm, yields increased iron initial velocity and lower iron spin while maintaining driver performance.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Feng Tay Enterprises Co., Ltd.
    Inventors: Yasushi Ichikawa, Arthur Parker Molinari
  • Patent number: 9812718
    Abstract: A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: November 7, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hidetaka Nishimura, Yasushi Ichikawa
  • Patent number: 9786931
    Abstract: A fuel cell system 100 includes: a fuel cell 1 for generating a power by causing an electrochemical reaction between an oxidant gas supplied to an oxidant electrode 34 and a fuel gas supplied to a fuel electrode 67; a fuel gas supplier HS for supplying the fuel gas to the fuel electrode 67; and a controller 40 for controlling the fuel gas supplier HS to thereby supply the fuel gas to the fuel electrode 67, the controller 40 being configured to implement a pressure change when an outlet of the fuel electrode 67 side is closed, wherein based on a first pressure change pattern for implementing the pressure change at a first pressure width ?P1, the controller 40 periodically changes a pressure of the fuel gas at the fuel electrode 67.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: October 10, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yasushi Ichikawa, Keigo Ikezoe, Kenichi Goto, Ken Nakayama, Mitsunori Kumada, Yousuke Tomita
  • Publication number: 20170149077
    Abstract: A fuel cell system supplies anode gas and cathode gas to a fuel cell and causes the fuel cell to generate power according to a load. The fuel cell system includes a supply passage configured to supply the anode gas to the fuel cell, a pressure control valve that provided in the supply passage and configured to adjust a pressure of the anode gas supplied to the fuel cell, and a discharge passage configured to discharge the anode gas from the fuel cell. The fuel cell system includes an ejector that provided in the supply passage configured to suck the anode gas discharged to the discharge passage and circulate the anode gas to the fuel cell by the anode gas supplied from the pressure control valve, and a control unit configured to pulsate the pressure of the anode gas supplied to the ejector.
    Type: Application
    Filed: May 9, 2014
    Publication date: May 25, 2017
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Yasushi ICHIKAWA
  • Patent number: 9631391
    Abstract: Provided are a buckling restrained brace including a core material that has a plate shape and extends along an axis, a restraining member that extends along the axis and covers the core material from an outer peripheral side in a state where both end portions of the core material in an axis direction protrude outside, a filler that is filled between the restraining member and the core material, and a pair of first reinforcing members that each have a plate shape and are installed in both end portions of the core material in the axis direction so as to interpose the core material therebetween from both sides of the core material in a plate width direction, and a load-bearing structure installed with the buckling restrained brace.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: April 25, 2017
    Assignee: NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD
    Inventors: Yasushi Ichikawa, Kouhei Higuchi, Kohji Nishimoto, Nobuhiro Mochizuki, Masatoshi Wada, Toyoki Kuroiwa, Shunji Endo
  • Patent number: 9601790
    Abstract: In a fuel cell system which executes a stop process of stopping an output from a fuel cell when a required power generation amount for the fuel cell is smaller than a predetermined power generation amount and supplies oxidant during a stop process period, fuel gas is intermittently supplied to a fuel electrode at a basic supply interval, which is set in advance and at which carbon dioxide is not generated in an oxidant electrode, during the stop process period.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: March 21, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Shinichi Makino, Yasushi Ichikawa, Michihiko Matsumoto, Mitsunori Kumada, Yoshitomo Asai
  • Patent number: 9597548
    Abstract: A golf ball having an inner core layer, an outer core layer enclosing the inner core layer, and a cover layer enclosing the outer core layer. The inner core layer includes a blend of a first highly neutralized acid polymer having a first Vicat softening temperature and a first specific gravity, a second highly neutralized acid polymer having a second Vicat softening temperature and a second specific gravity, and an ionomer-based masterbatch comprising an additive and an ionomer resin having a third Vicat softening temperature and a third specific gravity. The absolute values of the differences among the Vicat softening temperatures is no more than about 15° C. and the absolute value of the difference between the specific gravities is no more than about 0.015. The cover layer may include an inner cover layer enclosing the outer core layer and an outer layer enclosing the inner cover layer.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: March 21, 2017
    Assignee: NIKE, Inc.
    Inventors: Hideyuki Ishii, Yasushi Ichikawa, Chien-Hsin Chou, Chen-Tai Liu, Arthur Parker Molinari
  • Patent number: 9566474
    Abstract: A golf ball has a cover with a Shore D hardness of at least about 59 and a coating on the cover that has at least one of (a) a pencil hardness of 2 B or less, (b) a Sward hardness of about 40 or less, or (c) a Hit (Young's Modulus)<20 N/mm2 and hmax>0.55 micrometer.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 14, 2017
    Assignee: NIKE, Inc.
    Inventors: Nicholas Yontz, Bradley C. Tutmark, Yasushi Ichikawa, Hideyuki Ishii, Thomas J. Kennedy, III
  • Patent number: 9526950
    Abstract: Golf balls having one or more structural components that include a highly neutralized acid polymer with a high acid content and a uniformly increased density. The core of the golf ball may be made up of the highly neutralized acid polymer. The highly neutralized acid polymer may have desired hardness and flexural modulus values. The highly neutralized acid polymer enables the golf ball to provide consistent play characteristics.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: December 27, 2016
    Assignee: NIKE, Inc.
    Inventors: Yasushi Ichikawa, Thomas J. Kennedy, III
  • Patent number: 9492715
    Abstract: A golf ball having an inner core layer, an outer core layer essentially enclosing the inner core layer, an inner cover layer essentially enclosing the outer core layer, and an outer cover layer essentially enclosing the inner cover layer. The golf ball includes a blend of at least first and second highly neutralized acid polymers, each having a Vicat softening temperature and a specific gravity. The absolute value of the difference between the Vicat softening temperatures is no more than about 15° C. and the absolute value of the difference between the specific gravities is no more than about 0.015. Also, the method of making the blend and the golf ball is disclosed.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: November 15, 2016
    Assignee: NIKE, Inc.
    Inventors: Hideyuki Ishii, Hsin Cheng, Chien-Hsin Chou, Yasushi Ichikawa, Chen-Tai Liu, Arthur Molinari
  • Patent number: 9480883
    Abstract: Methods for evaluating and providing selections of recommended golf balls, golf ball constructions, and configurations of golf ball construction components are provided. Such methods may involve obtaining or measuring spin measurements for a plurality of golf clubs for each of a plurality of golf balls. A linear relationship may be used to determine a spin slope for each golf ball on the basis of the set of spin measurements associated with that golf ball. In turn, a selection of a recommended golf ball, golf ball construction, or configuration of a ball construction component may be made based upon which golf ball has the larger spin slope.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: November 1, 2016
    Assignee: NIKE, Inc.
    Inventors: Hideyuki Ishii, Yasushi Ichikawa, Nicholas A. Leech, Arthur Parker Molinari
  • Patent number: 9447596
    Abstract: The present invention relates to an axially yielding elasto-plastic hysteresis brace including an H-section steel as a steel core, a buckling-restraining member covering an outer periphery of the H-section steel, an unbonded layer filled between the steel core and the buckling-restraining member, and a square steel pipe covering the outer periphery of the buckling-restraining member for reinforcement. For both ends of the H-section steel, one reinforcing plate is welded to each outer surface of each flange so as to be overlapped therewith. The buckling-restraining member is installed so that each reinforcing plate is inserted to the buckling-restraining member through an end thereof by a predetermined length L. And, where the width of the H-section steel as a steel core is given as B and the height thereof is given as H, an insertion length L of each reinforcing plate is set in a range of 2B?L?3B and also 2H?L?3H.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 20, 2016
    Assignee: NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.
    Inventors: Yasushi Ichikawa, Kohji Nishimoto
  • Patent number: 9441105
    Abstract: There are disclosed a biodegradable resin composition including a starch (a1), a biodegradable resin (a2) other than a polylactic acid-based polymer and a non-crystalline polylactic acid-based polymer (b), a mass ratio of the starch (a1) to the biodegradable resin (a2) other than a polylactic acid-based polymer (a1/a2) being from 20/80 to 50/50, and a mass ratio of a sum of the components other than the polymer (b) to the polymer (b) (sum of components other than polymer (b)/polymer (b)) being from 95/5 to 50/50, and a biodegradable film using the biodegradable resin composition.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 13, 2016
    Assignee: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Yuuki Tetsuka
  • Patent number: 9444111
    Abstract: A fuel cell system includes a fuel cell, a control valve and a controller. The fuel cell is configured to receive anode gas and cathode gas to generate electric power. The control valve is configured to control pressure of the anode gas being fed to the fuel cell through an anode flow channel. The controller controls the control valve to periodically increase and decrease the pressure of the anode gas flowing through the anode flow channel in an area downstream of the control valve. The controller sets an anode pressure differential value for the anode gas resulting from periodic increasing and decreasing of the pressure of the anode gas based on a requested fuel cell output. The controller determines a quantity of liquid in the anode flow channel. The controller decreases the anode pressure differential value that was set based on the requested fuel cell output.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: September 13, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasushi Ichikawa, Shinichi Makino, Ryouichi Shimoi, Susumu Maeshima, Hayato Chikugo
  • Patent number: 9409059
    Abstract: A golf ball has a core, core center, or core layer containing a thermoset elastomer and a polyurethane prepared by combining a thermosetting elastomer and an isocyanate-functional polyurethane, which may be an elastomeric polyurethane, then curing the thermosetting elastomer.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: August 9, 2016
    Assignee: NIKE, Inc.
    Inventors: Yasushi Ichikawa, Thomas J. Kennedy, III