Patents Assigned to MAXELL HOLDINGS, LTD.
  • Patent number: 10614847
    Abstract: In a magnetic recording medium according to the present invention, if a straight line W having a length of 500 nm and a width of 15 nm is displayed parallel to a width direction of the magnetic layer and a straight line L having a length of 500 nm and a width of 15 nm is displayed parallel to a longitudinal direction of the magnetic layer, the number of magnetic particles that intersect the straight line W is N1, and the number of magnetic particles that intersect the straight line L is N2, then, a relationship of N1/0.5>60 and N2/0.5>60 is established where N1/0.5 is the number of magnetic particles per micrometer obtained by dividing N1 by 0.5 ?m and N2/0.5 is the number of magnetic particles per micrometer obtained by dividing N2 by 0.5 ?m.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: April 7, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventors: Shinji Kawakami, Toshio Hiroi, Masao Fujita
  • Patent number: 10586353
    Abstract: Information of plant based on color of a surface of plant is acquired from image data obtained by imaging plant, allowing to acquire information of plant at low cost, compared to chlorophyll meter or spectroscopic analyzer. In crop production like rice plant, fertilization management including fertilizer application management like fertilizer amount determination, or other agricultural works, is supported through a smart phone or the like based on data to be observed, like converted leaf color value is calculated from image data obtained by crop imaging. Camera is connected to smart phone. Converted leaf color value can be obtained from image data obtained by imaging leaf of rice plant by camera. Converted leaf color value is transmitted to management server, for example, amount information of applied fertilizer is required in case where converted leaf color value is less than standard, can be obtained as management information for fertilizer application management.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 10, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventors: Hiroyuki Yoshimura, Kanryo Terasawa, Masashi Yoshimura
  • Patent number: 10587014
    Abstract: A charging control method and a charging mechanism for a lithium ion secondary battery are provided that can determine the life of the lithium ion secondary battery with more accuracy and a simple configuration. A charging control method for a lithium ion secondary battery calculates an integrated value of the number of charged times. The method includes: adding a predetermined value to the integrated value of the number of charged times of the lithium ion secondary battery if both a residual voltage that is a voltage value of the lithium ion secondary battery before the beginning of charging and an elapsed time from the time of the previous charging of the lithium ion secondary battery are not less than predetermined values; and estimating the life of the lithium ion secondary battery based on the integrated value of the number of charged times.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: March 10, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventor: Keiichi Tanii
  • Patent number: 10557032
    Abstract: A composition for a support material according to the present invention is to be used in a support material for supporting a model material used to form a shaped article through ink-jet stereolithography and contains polyalkylene glycol having an oxybutylene group, a water-soluble monofunctional ethylenic unsaturated monomer, and a photopolymerization initiator, and the content of the polyalkylene glycol having an oxybutylene group is 15 parts by mass or more and 75 parts by mass or less with respect to the total mass of the composition for a support material taken as 100 parts by mass.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 11, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventors: Hiroshi Ota, Keisuke Okushiro
  • Patent number: 10541450
    Abstract: An alkaline secondary battery having excellent charge-discharge cycle characteristics is provided. The alkaline secondary battery includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode contains a silver oxide. The negative electrode contains zinc-based particles selected from the group consisting of zinc particles and zinc alloy particles. The separator holds an alkaline electrolyte solution. An anion conductive membrane is disposed between the negative electrode and the separator. The anion conductive membrane includes a polymer as a matrix and particles of at least one metal compound selected from the group consisting of metal oxides, metal hydroxides, metal carbonates, metal sulfates, metal phosphates, metal borates, and metal silicates, which are dispersed in the matrix.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: January 21, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventor: Mitsutoshi Watanabe
  • Patent number: 10535864
    Abstract: A nonaqueous electrolyte primary battery with improved storage properties at high temperatures and excellent reliability, and a method for producing the battery are provided. The nonaqueous electrolyte primary battery includes a negative electrode containing metallic lithium or a lithium alloy, a positive electrode, a separator, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains at least LiClO4 as an electrolyte and 0.1 to 5% by mass of LiB(C2O4)2.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: January 14, 2020
    Assignee: Maxell Holdings, Ltd.
    Inventor: Yu Sugioka
  • Publication number: 20200008328
    Abstract: An electromagnetic-wave absorbing sheet is realized which can favorably absorb electromagnetic waves with a high frequency in or above a millimeter-wave band, and has sufficient elasticity. The electromagnetic-wave absorbing sheet includes: an electromagnetic-wave absorbing layer 1 that includes a particulate electromagnetic-wave absorbing material 1a and a rubber binder 1b; and a dielectric layer 2 arranged on a back surface of the electromagnetic-wave absorbing layer. The electromagnetic-wave absorbing material is a magnetic iron oxide that magnetically resonates in a frequency band that is at least a millimeter-wave band. The dielectric layer is non-magnetic and has flexibility, a real part of a complex relative permittivity of the dielectric layer is 2 or more and 6 or less, and the dielectric layer has a thickness of 10 ?m or more and 100 ?m or less.
    Type: Application
    Filed: March 13, 2018
    Publication date: January 2, 2020
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Toshio HIROI, Masao FUJITA
  • Publication number: 20190373778
    Abstract: Provided is an electromagnetic-wave absorbing sheet that can favorably absorb electromagnetic waves while having high flexibility and being handled easily. The electromagnetic-wave absorbing sheet having flexibility includes an electric resistance film 1 and a dielectric layer 2 and an electromagnetic-wave shielding layer 3 that are stacked sequentially. The electric resistance film is formed of a conductive organic polymer.
    Type: Application
    Filed: November 9, 2017
    Publication date: December 5, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventor: Masayuki TOYODA
  • Publication number: 20190363412
    Abstract: Provided are an air cell that has a reduced environmental impact and has favorable discharge characteristics as well as a patch equipped with the air cell. An air cell of the present invention includes, an outer case, which contains a positive electrode having a catalyst layer containing a catalyst and a binder, a negative electrode containing a metal material, a separator, and an electrolytic solution. The electrolytic solution is an aqueous solution with a pH of 3 or more and less than 12. The separator has an air permeability of 10 sec/100 ml or more, or the positive electrode has a porous sheet made of carbon as a current collector. A patch of the present invention includes the air cell of the present invention as a power supply.
    Type: Application
    Filed: September 20, 2017
    Publication date: November 28, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Takahiro FURUTANI, Kunihiko KOYAMA, Mitsutoshi WATANABE, Hiroaki ONO
  • Publication number: 20190356014
    Abstract: The lithium ion secondary battery includes an electrode body and a nonaqueous electrolyte liquid. The negative electrode active material in the negative electrode includes a materials S including Si. Assuming that a total of all negative electrode active materials included in the negative electrode is 100 mass %, a content of the material S is higher than 5 mass %. The nonaqueous electrolyte liquid comprises propylene carbonate and a chain carbonate as a solvent. A volume content of the propylene carbonate in the solvent is 10 to 50 volume %. The positive electrode comprises a positive electrode composition layer comprising a metal oxide comprising Li and a metal M except for Li as a positive electrode active material provided on at least one surface of a positive electrode current collector. The lithium ion secondary battery has an upper limit voltage in charge is 4.35 V of more.
    Type: Application
    Filed: August 28, 2017
    Publication date: November 21, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Hiroshi Abe, Susumu Yoshikawa, Tomohito Sekiya
  • Publication number: 20190350665
    Abstract: Provided is a wearable patch that can reliably interrupt the power supply from the cell after use and can be disposed of as it is. Moreover, provided is a sheet-type cell that can reliably interrupt the power supply after use and can be disposed of safely. The wearable patch is worn on the body and includes a functional element, a drive circuit unit that operates the functional element, and a cell as a power source. A cutting facilitating member is formed to allow a predetermined portion of the wearable patch to be cut with a force of 200 N or less so that the power supply from the cell to the drive circuit unit is interrupted.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 21, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Takahiro FURUTANI, Mitsutoshi WATANABE, Hiroaki ONO
  • Publication number: 20190355990
    Abstract: An alkaline secondary battery disclosed in the present application includes a positive electrode containing a positive electrode active material, a negative electrode, and a separator. The positive electrode active material contains a mixture of a silver oxide and a silver-bismuth complex oxide. A discharge curve is obtained when the battery that is fully charged is discharged with a constant current until a battery voltage drops to 1.0 V. The battery voltage at a point on the discharge curve where x (%) of a total discharge capacity has been discharged from the battery since start of discharge is represented by Vx (V). The discharge curve satisfies V10?V70?0.08, has a step in the range of 70?x?90, and shows that a size of the step represented by V70?V90 is 0.04 or more and 0.15 or less.
    Type: Application
    Filed: March 12, 2018
    Publication date: November 21, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Yusuke INOUE, Mitsutoshi WATANABE
  • Publication number: 20190348730
    Abstract: One aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte solution that are housed in a sheet-like outer case. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12. The electrolyte solution contains a water-soluble high-boiling solvent with a boiling point of 150° C. or more in an amount of 3 to 30% by mass of the total solvent. Another aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte that are housed in a sheet-like outer case. The electrolyte is obtained by blending an electrolyte solution and a thickening agent. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12.
    Type: Application
    Filed: March 12, 2018
    Publication date: November 14, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Takahiro FURUTANI, Hiroaki ONO
  • Publication number: 20190315986
    Abstract: An ink composition according to the present invention contains a polymerizable compound and a photopolymerization initiator, wherein an amount of organic sulfonic acid measured at a temperature of 25° C. by using a water extraction method is 50 ppm or less, and an amount of water measured by a Karl Fischer method is 0.50 mass % or less with respect to a total mass of the ink composition. Also, an ink-jet ink set according to the present invention includes the above-described ink composition of the present invention. Also, an ink-jet printing system according to the present invention uses the above-described ink composition of the present invention and an ink-jet recording apparatus, and the ink-jet recording apparatus includes an ink heating portion and an ink filter.
    Type: Application
    Filed: May 30, 2019
    Publication date: October 17, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Tomohisa NISHIMOTO, Yoshiro NISHIMURA, Masaru NAKAYAMA, Satoshi KUBO
  • Publication number: 20190309104
    Abstract: There is provided a hyper-branched polymer represented by the following formula (1) and having a weight-average molecular weight in a range of 1,000 to 1,000,000. In the formula (1), A1 is a group containing an aromatic ring, A2 is a group containing an amide group, A3 is a group containing sulfur, R0 is hydrogen or a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms, ml is in a range of 0.5 to 11, and n1 is in a range of 5 to 100.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 10, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Naoki USUKI, Akiko KITO, Atsushi YUSA
  • Publication number: 20190312356
    Abstract: An electromagnetic wave absorbing sheet is provided that can adequately absorb electromagnetic waves at high frequencies in and above the millimeter wave band, can have excellent flexibility, and can easily be placed in any desired portion. The electromagnetic wave absorbing sheet includes an electromagnetic wave absorbing layer 1 containing a magnetic iron oxide 1a that magnetically resonates at frequencies in and above the millimeter wave band and a resin binder 1b. The electromagnetic wave absorbing sheet absorbs radiated electromagnetic waves by magnetic resonance of the magnetic iron oxide.
    Type: Application
    Filed: November 2, 2017
    Publication date: October 10, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Masao FUJITA, Toshio HIROI
  • Publication number: 20190287562
    Abstract: The magnetic recording medium disclosed in the present application includes a non-magnetic support, an undercoat layer, a magnetic layer containing magnetic particles, and a back coat layer. The coercive force Hc of the magnetic layer in the thickness direction at 25° C. is not 4100 oersteds (Oe) or more, and the coercive force Hc of the magnetic layer in the thickness direction at a temperature between 55° C. and 80° C. inclusive is not less than 1200 oersteds (Oe) and not more than 3700 oersteds (Oe).
    Type: Application
    Filed: March 13, 2019
    Publication date: September 19, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Shinji KAWAKAMI, Masao FUJITA, Toshio HIROI
  • Publication number: 20190269048
    Abstract: Provided is an electromagnetic-wave absorber that can favorably absorb electromagnetic waves of a plurality of different frequencies in a high frequency band equal to or higher than the millimeter-wave band. The electromagnetic-wave absorber includes an electromagnetic-wave absorbing layer 1 in which a plurality of magnetic layers 1a-1e are stacked, each magnetic layer containing magnetic iron oxide that magnetically resonates at a high frequency in a band equal to or higher than the millimeter-wave band. A value of an anisotropic magnetic field (HA) of the magnetic iron oxide contained in at least one of the magnetic layers is different from that of the magnetic iron oxide contained in another of the magnetic layers.
    Type: Application
    Filed: July 19, 2017
    Publication date: August 29, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Masao FUJITA, Toshio HIROI
  • Patent number: D871231
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: December 31, 2019
    Assignee: Maxell Holdings, Ltd.
    Inventors: Tadahiro Kuwa, Keiko Yamanaka
  • Patent number: D880311
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: April 7, 2020
    Assignee: Maxell Holdings, Ltd.
    Inventors: Tadahiro Kuwa, Keiko Yamanaka