Patents by Inventor Masaru Kihara

Masaru Kihara 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: 20220384786
    Abstract: A nickel metal hydride secondary battery comprises an outer can and an electrode assembly housed in the outer can together with an alkaline electrolytic solution, wherein the electrode assembly is such that a positive electrode including a positive electrode mixture and a negative electrode including a negative electrode mixture are superimposed with a separator interposed therebetween, the positive electrode mixture includes nickel hydroxide forming a solid solution with zinc as a positive electrode active material and zinc oxide as a positive electrode additive, the negative electrode mixture includes hydrogen absorbing alloy particles and a negative electrode additive, the negative electrode additive is a composite in which yttrium fluoride is supported on carbon black, and a surface of the hydrogen absorbing alloy particles is partially coated with the composite.
    Type: Application
    Filed: April 22, 2022
    Publication date: December 1, 2022
    Inventors: Akira Saguchi, Shota Ohata, Jun Ishida, Yuki Ehara, Masaru Kihara
  • Publication number: 20220384779
    Abstract: A hydrogen absorbing alloy negative electrode is provided. The hydrogen absorbing alloy negative electrode has a hydrogen absorbing alloy, and an additive including yttrium fluoride. A mass of the yttrium fluoride is 0.1 parts by mass or more and 0.2 parts by mass or less based on a hydrogen absorbing alloy powder of 100 parts by mass.
    Type: Application
    Filed: May 14, 2022
    Publication date: December 1, 2022
    Inventors: Shota Ohata, Akira Saguchi, Jun Ishida, Yuki Ehara, Masaru Kihara
  • Publication number: 20220384808
    Abstract: A negative electrode for an alkaline storage battery that achieves both an improvement in cycle life and an improvement in low temperature discharge characteristics, and an alkaline storage battery including the negative electrode are disclosed. The negative electrode for an alkaline storage battery includes a negative electrode core body formed of metal, and a negative electrode mixture layer which contains at least a hydrogen storage alloy and yttrium fluoride, and is carried on the negative electrode core body. Particles of the yttrium fluoride are formed so that the average particle size thereof is equal to 1 ?m or more and 7 ?m or less.
    Type: Application
    Filed: May 13, 2022
    Publication date: December 1, 2022
    Inventors: Yuki Ehara, Jun Ishida, Shota Ohata, Akira Saguchi, Masaru Kihara
  • Publication number: 20220069285
    Abstract: A nickel-metal hydride secondary battery includes an outer can and a group of electrodes housed in the outer can together with an alkaline electrolytic solution. The group of electrodes includes a positive electrode and a negative electrode that are superposed with a separator interposed therebetween, and the negative electrode includes a hydrogen absorbing alloy for nickel-metal hydride secondary batteries, the hydrogen absorbing alloy having a single composition and composed of a plurality of crystal phases.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Shota Ohata, Jun Ishida, Yuki Ehara, Masaru Kihara
  • Publication number: 20220052318
    Abstract: A battery 2 includes an outer can 10 and an electrode group 22 that is housed in the outer can 10 together with an alkaline electrolytic solution, in which a positive electrode 24 included in the electrode group 22 includes a positive electrode substrate and a positive electrode mixture supported on the positive electrode substrate, the positive electrode mixture includes nickel hydroxide and a positive electrode additive, the positive electrode additive includes a titanium oxide particle having an anatase-type crystal structure, the titanium oxide particle has an average primary particle size of 5 nm or more and 10 nm or less and a BET specific surface area of 230 m2/g or more and 360 m2/g or less, and includes 0.1% by mass or more of niobium, and a rate of addition of the titanium oxide relative to the nickel hydroxide is 0.1% by mass or more and 1.0% by mass or less.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 17, 2022
    Inventors: Tetsuya Yamane, Yuzo Imoto, Yuya Tanimoto, Masaru Kihara, Hideyuki Asanuma
  • Publication number: 20220052317
    Abstract: A battery 2 includes an outer can 10 and an electrode group 22 that is housed in the outer can 10 together with an alkaline electrolytic solution, in which a positive electrode 24 included in the electrode group 22 includes a positive electrode substrate and a positive electrode mixture supported on the positive electrode substrate, the positive electrode mixture includes nickel hydroxide, yttrium oxide serving as a first additive, and niobium oxide or titanium oxide serving as a second additive, a total amount of the first additive and the second additive is 0.1 parts by mass or more and 2.5 parts by mass or less per 100 parts by mass of the nickel hydroxide, a mass ratio of the first additive and the second additive is in a relationship of 1:0.2 to 5, and the positive electrode mixture after an activation treatment has a resistivity of 1 ?·m or more and 10 ?·m or less.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 17, 2022
    Inventors: Yuya Tanimoto, Yuzo Imoto, Tetsuya Yamane, Masaru Kihara, Hideyuki Asanuma
  • Patent number: 11228027
    Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: January 18, 2022
    Assignees: FDK CORPORATION, FUJITSU LIMITED
    Inventors: Takeshi Ito, Yuzo Imoto, Masaru Kihara, Takayuki Yano, Shigekazu Yasuoka, Shuuichi Doi, Takashi Yamazaki, Yuji Kataoka
  • Patent number: 10693194
    Abstract: A nickel hydrogen secondary battery accommodates an electrode group including a positive electrode and a negative electrode which are stacked one on top of another through a separator, together with an alkaline electrolyte. The battery contains Li, with a total amount of Li in the battery 2 of 15 to 50 mg/Ah, as determined as the mass in terms of LiOH per Ah of the positive electrode capacity. The negative electrode includes particles of rare earth-Mg—Ni-based hydrogen storage alloy which contains a rare earth element, Mg and Ni. The hydrogen storage alloy particles 44 includes, on the surface thereof, a rare earth hydroxide which is the hydroxide of a rare earth element and has a specific surface area of 0.1 to 0.5 m2/g.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: June 23, 2020
    Assignee: FDK CORPORATION
    Inventors: Masaru Kihara, Akira Saguchi, Yusuke Shingai, Jun Ishida, Takuya Kai
  • Publication number: 20200161646
    Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Takeshi Ito, Yuzo Imoto, Masaru Kihara, Takayuki Yano, Shigekazu Yasuoka, Shuuichi Doi, Takashi Yamazaki, Yuji Kataoka
  • Patent number: 10384479
    Abstract: A printer includes a mainframe including a front face part that has an opening through which a recording medium passes; a guide unit connected to the mainframe on a first side of the front face part; a printer mechanism unit configured to perform printing on the recording medium, and connected to the mainframe on a second side of the front face part opposite to the first side thereof; an arm unit having a first end connected to the mainframe; and a shaft unit configured to hold a roll of the recording medium, and connected to a second end of the arm unit, wherein the guide unit is configured to guide the recording medium so as to feed the recording medium to the printer mechanism unit through the opening of the front face part of the mainframe.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: August 20, 2019
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Tsuchiya, Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masaru Kihara
  • Publication number: 20190190083
    Abstract: A nickel hydrogen secondary battery 2 has an outer can 10, and an electrode group 22 accommodated together with an alkali electrolyte solution in the outer can 10. The electrode group 22 includes a positive electrode 24 and a negative electrode 26 stacked through a separator 28. The positive electrode 24 includes a first positive electrode active substance and a second positive electrode active substance. These first and second positive electrode active substances each contain nickel hydroxide as a main component, and the first positive electrode active substance and the second positive electrode active substance differ in the amount of magnesium solid-dissolved.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 20, 2019
    Inventors: Yuzo Imoto, Yuya Tanimoto, Tetsuya Yamane, Masaru Kihara
  • Publication number: 20180248172
    Abstract: A nickel hydrogen secondary battery comprises an outer can and an electrode group accommodated in a hermetically sealed state together with an alkaline electrolyte solution in the outer can, wherein the electrode group comprises a positive electrode and a negative electrode stacked through a separator, wherein the negative electrode contains a hydrogen absorbing alloy powder that is an aggregate of particles of a hydrogen absorbing alloy, wherein the hydrogen absorbing alloy powder is such that when an average particle size of the particles is represented by M; a particle size of ½ of the M is represented by P; and a particle size of ? of the M is represented by Q, a content of the particles having a particle size equal to or smaller than the P is lower than 20% by mass of the whole of the hydrogen absorbing alloy powder; and the content of the particles having a particle size equal to or smaller than the Q is lower than 10% by mass of the whole of the hydrogen absorbing alloy powder.
    Type: Application
    Filed: February 24, 2016
    Publication date: August 30, 2018
    Inventors: Masaru Kihara, Akira Saguchi, Yusuke Shingai, Jun Ishida, Takuya Kai, Takeshi Kajiwara
  • Publication number: 20180114981
    Abstract: A nickel-hydrogen secondary battery includes an electrode group that includes a separator, a positive electrode and a negative electrode, and the negative electrode contains a hydrogen storage alloy having a crystal structure in which an AB2 type unit and an AB5 type unit are laminated, in which a PCT characteristic diagram at 80° C. includes a first plateau region having a hydrogen pressure Pd1 when hydrogen is stored by 0.25 times an effective hydrogen storage amount that is a hydrogen storage amount when a hydrogen pressure is 1 MPa, and a second plateau region having a hydrogen pressure Pd2 when hydrogen is stored by 0.70 times the effective hydrogen storage amount, and Pd1 and Pd2 satisfy a relation of 0.6?log10(Pd2/Pd1).
    Type: Application
    Filed: March 10, 2016
    Publication date: April 26, 2018
    Inventors: Jun Ishida, Masaru Kihara, Akira Saguchi, Yusuke Shingai, Takuya Kai, Takeshi Kajiwara
  • Publication number: 20170237065
    Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 17, 2017
    Inventors: Takeshi Ito, Yuzo Imoto, Masaru Kihara, Takayuki Yano, Shigekazu Yasuoka, Shuuichi Doi, Takashi Yamazaki, Yuji Kataoka
  • Publication number: 20170120637
    Abstract: A printer includes a mainframe including a front face part that has an opening through which a recording medium passes; a guide unit connected to the mainframe on a first side of the front face part; a printer mechanism unit configured to perform printing on the recording medium, and connected to the mainframe on a second side of the front face part opposite to the first side thereof; an arm unit having a first end connected to the mainframe; and a shaft unit configured to hold a roll of the recording medium, and connected to a second end of the arm unit, wherein the guide unit is configured to guide the recording medium so as to feed the recording medium to the printer mechanism unit through the opening of the front face part of the mainframe.
    Type: Application
    Filed: January 13, 2017
    Publication date: May 4, 2017
    Inventors: Masahiro Tsuchiya, Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masaru Kihara
  • Publication number: 20170110764
    Abstract: A nickel hydrogen secondary battery accommodates an electrode group including a positive electrode and a negative electrode which are stacked one on top of another through a separator, together with an alkaline electrolyte. The battery contains Li, with a total amount of Li in the battery 2 of 15 to 50 mg/Ah, as determined as the mass in terms of LiOH per Ah of the positive electrode capacity. The negative electrode includes particles of rare earth-Mg—Ni-based hydrogen storage alloy which contains a rare earth element, Mg and Ni. The hydrogen storage alloy particles 44 includes, on the surface thereof, a rare earth hydroxide which is the hydroxide of a rare earth element and has a specific surface area of 0.1 to 0.5 m2/g.
    Type: Application
    Filed: June 23, 2015
    Publication date: April 20, 2017
    Inventors: Masaru Kihara, Akira Saguchi, Yusuke Shingai, Jun Ishida, Takuya Kai
  • Patent number: 9610786
    Abstract: A printer includes a printing part that performs printing on recording paper, a cutter that cuts the recording paper, a first roller provided on the side to which the recording paper is discharged from the cutter, a second roller that is in contact with the first roller and is rotated by the rotation of the first roller, a third roller that is in contact with the first roller and is rotated by the rotation of the first roller, and a connecting arm that connects the center of the first roller and the center of the second roller, wherein the recording paper is discharged between the first roller and the second roller or between the first roller and the third roller.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: April 4, 2017
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masaru Kihara, Masahiro Tsuchiya, Yoshinari Takabatake, Toshio Yamaguchi
  • Patent number: 9586422
    Abstract: A printer includes a mainframe including a front face part that has an opening through which a recording medium passes; a guide unit connected to the mainframe on a first side of the front face part; a printer mechanism unit configured to perform printing on the recording medium, and connected to the mainframe on a second side of the front face part opposite to the first side thereof; an arm unit having a first end connected to the mainframe; and a shaft unit configured to hold a roll of the recording medium, and connected to a second end of the arm unit, wherein the guide unit is configured to guide the recording medium so as to feed the recording medium to the printer mechanism unit through the opening of the front face part of the mainframe.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: March 7, 2017
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Tsuchiya, Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masaru Kihara
  • Publication number: 20160279977
    Abstract: A printer includes a printing part that performs printing on recording paper, a cutter that cuts the recording paper, a first roller provided on the side to which the recording paper is discharged from the cutter, a second roller that is in contact with the first roller and is rotated by the rotation of the first roller, a third roller that is in contact with the first roller and is rotated by the rotation of the first roller, and a connecting arm that connects the center of the first roller and the center of the second roller, wherein the recording paper is discharged between the first roller and the second roller or between the first roller and the third roller.
    Type: Application
    Filed: June 10, 2016
    Publication date: September 29, 2016
    Inventors: Tetsuhiro ISHIKAWA, Sumio WATANABE, Yukihiro MORI, Masaru KIHARA, Masahiro TSUCHIYA, Yoshinari TAKABATAKE, Toshio YAMAGUCHI
  • Patent number: 9387705
    Abstract: A printer includes a printing part that performs printing on recording paper, a cutter that cuts the recording paper, a first roller provided on the side to which the recording paper is discharged from the cutter, a second roller that is in contact with the first roller and is rotated by the rotation of the first roller, a third roller that is in contact with the first roller and is rotated by the rotation of the first roller, and a connecting arm that connects the center of the first roller and the center of the second roller, wherein the recording paper is discharged between the first roller and the second roller or between the first roller and the third roller.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 12, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masaru Kihara, Masahiro Tsuchiya, Yoshinari Takabatake, Toshio Yamaguchi