Patents by Inventor Youichi Arai

Youichi Arai 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: 10403890
    Abstract: A negative electrode active material which has a ternary alloy composition represented by Si—Sn-M (M is one or two or more transition metal elements) and has a microstructure which has a first phase (silicide phase) having a silicide of a transition metal as a main component and a second phase partially containing Sn and having amorphous or low crystalline silicon as a main component, and further has partially a plurality of independent first phases and partially a eutectic structure of the first phase and the second phase is used for an electric device. The negative electrode active material improves cycle durability of an electric device such as a lithium ion secondary battery.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: September 3, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Nobutaka Chiba, Youichi Yoshioka, Tomohiro Kaburagi, Manabu Watanabe, Masaya Arai
  • Patent number: 10340519
    Abstract: To provide a means capable of improving the cycle durability of an electric device such as a lithium ion secondary battery. A negative electrode active material containing a silicon-containing alloy having ternary alloy composition represented by Si—Sn-M (M is one or two or more transition metal elements) or quaternary alloy composition represented by Si—Sn-M-Al (M is one or two or more transition metal elements) and having a structure wherein an a-Si phase containing amorphous or low crystalline silicon containing tin in a silicon crystal structure in form of a solid solution is dispersed in a silicide phase containing a silicide of a transition metal as a main component is used in an electric device. The negative electrode active material improves the cycle durability of an electric device such as a lithium ion secondary battery.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 2, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Nobutaka Chiba, Tomohiro Kaburagi, Youichi Yoshioka, Manabu Watanabe, Masaya Arai
  • Publication number: 20190173081
    Abstract: A negative electrode active material containing a Si-containing alloy having a composition to be represented by Chemical Formula (1): SixSnyMzAlwAa (in Chemical Formula (1) above, M is one or two or more transition metal elements, A is an unavoidable impurity, and x, y, z, w, and a represent values of percentage by mass, where y, z, and w are 2?y?10, 25?z?35, and 0.3?w?3, respectively, and x and a are remainder) is used in an electrical device, providing a means capable of improving the cycle durability of the electrical device such as a lithium ion secondary battery.
    Type: Application
    Filed: June 16, 2016
    Publication date: June 6, 2019
    Inventors: Masaya Arai, Nobutaka Chiba, Youichi Yoshioka, Manabu Watanabe
  • Patent number: 9956246
    Abstract: A solid composition comprising the following components (A) and (B): (A) from 20 to 65 mass % of a fat globule membrane component; and (B) from 0.2 to 4 mass % of a water-soluble dietary fiber having a weight average molecular weight of 10,000 or more.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: May 1, 2018
    Assignee: KAO CORPORATION
    Inventors: Yuki Ishida, Youichi Arai, Yasushi Shioya
  • Publication number: 20170157166
    Abstract: A solid composition comprising the following components (A) and (B): (A) from 20 to 55 mass % of a fat globule membrane component; and (B) from 0.2 to 4 mass % of a water-soluble dietary fiber having a weight average molecular weight of 10,000 or more.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 8, 2017
    Applicant: KAO CORPORATION
    Inventors: Yuki ISHIDA, Youichi ARAI, Yasushi SHIOYA
  • Patent number: 9649322
    Abstract: A solid supplement comprising the following components (A) and (B): (A) sphingomyelin in an amount of from 0.15 to 7% by mass; and (B) phosphatidyl inositol or a salt thereof, wherein the mass ratio of the content of phosphatidyl inositol or the salt thereof (B) in terms of phosphatidyl inositol content to the content of sphingomyelin (A) in the solid supplement, i.e., [(B)/(A)], is from 0.05 to 3.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: May 16, 2017
    Assignee: KAO CORPORATION
    Inventors: Youichi Arai, Yuki Ishida, Yasushi Shioya
  • Publication number: 20150342971
    Abstract: A solid supplement comprising the following components (A) and (B): (A) sphingomyelin in an amount of from 0.15 to 7% by mass; and (B) phosphatidyl inositol or a salt thereof, wherein the mass ratio of the content of phosphatidyl inositol or the salt thereof (B) in terms of phosphatidyl inositol content to the content of sphingomyelin (A) in the solid supplement, i.e., [(B)/(A)], is from 0.05 to 3.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 3, 2015
    Applicant: KAO CORPORATION
    Inventors: Youichi ARAI, Yuki ISHIDA, Yasushi SHIOYA
  • Patent number: 8498067
    Abstract: An optical element holding apparatus includes an annular vibration attenuation plate, which covers a peripheral portion of a lens, and a connection member, which is formed of a damping alloy and which fixes the vibration attenuation plate to a frame body in a state of non-contact with the surface of the lens. The vibration attenuation plate and nitrogen gas in a clearance between the vibration attenuation plate and the surface of the lens form a squeeze film damper.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: July 30, 2013
    Assignee: Nikon Corporation
    Inventor: Youichi Arai
  • Patent number: 8363340
    Abstract: An optical element holding apparatus includes an annular vibration attenuation plate, which covers a peripheral portion of a lens, and a connection member, which is formed of a damping alloy and which fixes the vibration attenuation plate to a frame body in a state of non-contact with the surface of the lens. The vibration attenuation plate and nitrogen gas in a clearance between the vibration attenuation plate and the surface of the lens form a squeeze film damper.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: January 29, 2013
    Assignee: Nikon Corporation
    Inventor: Youichi Arai
  • Publication number: 20110235014
    Abstract: An optical element holding apparatus includes an annular vibration attenuation plate, which covers a peripheral portion of a lens, and a connection member, which is formed of a damping alloy and which fixes the vibration attenuation plate to a frame body in a state of non-contact with the surface of the lens. The vibration attenuation plate and nitrogen gas in a clearance between the vibration attenuation plate and the surface of the lens form a squeeze film damper.
    Type: Application
    Filed: June 13, 2011
    Publication date: September 29, 2011
    Inventor: Youichi Arai
  • Publication number: 20080259469
    Abstract: An optical element holding apparatus includes an annular vibration attenuation plate, which covers a peripheral portion of a lens, and a connection member, which is formed of a damping alloy and which fixes the vibration attenuation plate to a frame body in a state of non-contact with the surface of the lens. The vibration attenuation plate and nitrogen gas in a clearance between the vibration attenuation plate and the surface of the lens form a squeeze film damper.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 23, 2008
    Inventor: Youichi Arai
  • Publication number: 20080188563
    Abstract: A blood fluidity-improving agent, a blood circulation promoter or a cerebrovascular disease-improving agent, containing as an active ingredient thereof one or more ingredients selected from the group consisting of chlorogenic acids, caffeic acids, ferulic acids and pharmaceutically acceptable salts of these acids. The present blood fluidity-improving agent, blood circulation promoter or cerebrovascular disease-improving agent is highly safe and can be orally taken over longer periods of time.
    Type: Application
    Filed: March 31, 2008
    Publication date: August 7, 2008
    Applicant: KAO CORPORATION
    Inventors: Youichi Arai, Takuya Watanabe, Atsushi Suzuki, Hiroko Joukura
  • Publication number: 20070279005
    Abstract: Voltage V2 is calculated by subtracting a terminal voltage at an end of discharge F. V. and a voltage drop (Rn+Rpolsat)*Ip caused by a maximum internal resistance (Rn+Rpolsat) of a battery at a given time. A quotient is calculated by dividing V2 by terminal voltage drop V1 after all charged capacity SOC2 (Ah) of a given battery is fully discharged. A dischargeable capacity (Ah) is calculated by multiplying the quotient by a given charged capacity SOC2 (Ah).
    Type: Application
    Filed: August 8, 2005
    Publication date: December 6, 2007
    Inventor: Youichi Arai
  • Publication number: 20070120534
    Abstract: The present invention provides a method of measuring an intrinsic resistance of a battery at a low rate discharge and an apparatus of the same.
    Type: Application
    Filed: January 20, 2005
    Publication date: May 31, 2007
    Inventor: Youichi Arai
  • Publication number: 20070096743
    Abstract: A method and apparatus for judging deterioration of a battery are provided, thereby a correct judgement for the deterioration of the battery can be timely carried out so as to replace the battery with another if it is necessary.
    Type: Application
    Filed: June 15, 2004
    Publication date: May 3, 2007
    Applicant: YAZAKI CORPORATION
    Inventors: Youichi Arai, Tsutomu Saigo, Shuji Satake, Hisashi Takemoto, Ken Ito, Yoshiya Miyazaki
  • Publication number: 20070052423
    Abstract: [PROBLEM] To provide a method and an apparatus for estimating saturated polarization voltage drops, and a method for estimating residual discharge capacity of the battery in order to measure accurately the state of the battery.
    Type: Application
    Filed: October 19, 2004
    Publication date: March 8, 2007
    Applicant: YAZAKI CORPORATION
    Inventor: Youichi Arai
  • Publication number: 20060273763
    Abstract: A microcomputer 23 monitors the battery condition by detecting a first deterioration degree caused by increase of an internal resistance of a battery 13 and a second deterioration degree caused by inactivation of an activation material in the battery 13 based on outputs of a current sensor 15 and a voltage sensor 17.
    Type: Application
    Filed: March 23, 2004
    Publication date: December 7, 2006
    Applicant: YAZAKI CORPORATION
    Inventors: Youichi Arai, Yoshiya Miyazaki
  • Publication number: 20060273761
    Abstract: A CPU 23a detects a charging efficiency which is a ratio of an electrical quantity to be stored in a battery 13 as electromotive force to an electrical quantity flowed into the battery 13 at any time point from a start of charging to an end of charging of the battery 13 on the basis of a charging current and charging voltage obtained by using a current sensor 15 and voltage sensor 17. Then, a fully charged state of the battery 13 is detected when the detected charging efficiency can be regarded as zero.
    Type: Application
    Filed: March 31, 2004
    Publication date: December 7, 2006
    Applicant: YAZAKI CORPORATION
    Inventors: Youichi Arai, Kenichi Amano
  • Publication number: 20060238167
    Abstract: A unit for estimating voltage drop 23a-1 estimates voltage drop of a battery terminal when maximum current is continuously supplied at high rate discharge. A unit for estimating residual discharge capacity 23a-2 estimates residual discharge capacity of the battery for allowing the maximum current to be continuously supplied to a load by subtracting the undischargeable electric charge calculated from the voltage drop estimated by the unit for estimating voltage drop 23a-1 from the dischargeable charge in any state of charge.
    Type: Application
    Filed: March 23, 2004
    Publication date: October 26, 2006
    Applicant: YAZAKI CORPORATION
    Inventors: Youichi Arai, Michito Enomoto, Kenichi Amano
  • Publication number: 20060214636
    Abstract: The present invention is to provide an equalizing method and an apparatus thereof for preventing unit cells from being over charged and discharged. After an ignition switch is turned off, CPU checks a voltage of a main battery and judges whether the main battery is in a state of equilibrium or not. When the main battery is in the state of equilibrium, the CPU controls a first and second switch groups to equalize voltages of unit cells included in the main battery by repeating a charge transfer from a maximum voltage cell to a minimum voltage cell for a predetermined period of time.
    Type: Application
    Filed: December 22, 2005
    Publication date: September 28, 2006
    Applicant: Yazaki Corporation
    Inventors: Youichi Arai, Kouichi Yamamoto