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    OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME
    1.
    发明公开
    OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME 审中-公开

    公开(公告)号：EP4286923A1

    公开(公告)日：2023-12-06

    申请号：EP22745616.7

    申请日：2022-01-14

    Applicant: Sumitomo Osaka Cement Co., Ltd.

    Inventor： KATO Kei ,  ICHIMEI Hideki

    IPC: G02F1/01 ,  B23K11/06 ,  H04B10/516

    Abstract: An optical modulator that suppresses poor welding between a case main body and a lid portion is provided. There is provided an optical modulator including: a case that is a rectangular parallelepiped and accommodates at least an optical waveguide element, in which the case includes a case main body 1 in which one surface of the rectangular parallelepiped forms an opening portion, and a lid portion 2 that has a rectangular shape and that closes the opening portion, the lid portion includes a peripheral part that has a thin thickness, and a protruding part 20 that is formed on the lid portion excluding the peripheral part and that protrudes toward an inside of the case, and when the lid portion is fitted into the case main body, a distance between an inner peripheral side of an end surface forming the opening portion of the case main body and an outer edge of the protruding part is set such that a distance d1 formed on a short-side side of the lid portion is larger than a distance d2 formed on a long-side side of the lid portion.

    OPTICAL WAVEGUIDE ELEMENT, AND OPTICAL MODULATION DEVICE AND OPTICAL TRANSMISSION APPARATUS USING OPTICAL WAVEGUIDE ELEMENT
    3.
    发明公开
    OPTICAL WAVEGUIDE ELEMENT, AND OPTICAL MODULATION DEVICE AND OPTICAL TRANSMISSION APPARATUS USING OPTICAL WAVEGUIDE ELEMENT 审中-公开

    公开(公告)号：EP3978993A1

    公开(公告)日：2022-04-06

    申请号：EP21200131.7

    申请日：2021-09-30

    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

    Inventor： KATAOKA, Yu ,  TAKANO, Shingo ,  MIYAZAKI, Norikazu

    IPC: G02F1/035 ,  G02F1/21 ,  G02F1/225

    Abstract: [Task] Provided is an optical waveguide element which suppresses polarization rotation.
    [Means for Resolution] An optical waveguide element includes a substrate (10) and an optical waveguide (2) that is disposed on the substrate (10). The optical waveguide (2) has an effective refractive index change portion in which an effective refractive index of the optical waveguide (2) related to a fundamental mode A parallel to a plane of polarization of a light wave propagated through the optical waveguide (2) changes according to propagation of the light wave. In the effective refractive index change portion, a cross-sectional shape of the optical waveguide (2) which is perpendicular to a propagation direction of the light wave is set such that the effective refractive index of the optical waveguide (2) related to the fundamental mode A is higher than an effective refractive index of the optical waveguide (2) related to another fundamental mode B perpendicular to the fundamental mode A.

    POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY
    6.
    发明公开
    POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY 审中-公开

    公开(公告)号：EP3799160A1

    公开(公告)日：2021-03-31

    申请号：EP20161840.2

    申请日：2020-03-09

    Applicant: Sumitomo Osaka Cement Co., Ltd.

    Inventor： NOZOE, Tsutomu ,  NAKANO, Toyomasa

    IPC: H01M4/136 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525

    Abstract: A positive electrode material for a lithium ion secondary battery capable of obtaining a lithium ion secondary battery having a high discharge capacity and excellent cycle characteristics, a positive electrode for a lithium ion secondary battery using the positive electrode material, and a lithium ion secondary battery having the positive electrode are provided.
    Provided is the positive electrode material for a lithium ion secondary battery, including core particles and a carbonaceous film coating a surface of the core particles, in which in a Raman spectrum analysis of the carbonaceous film, in a case where a peak intensity of a spectrum in a wave number band of 1,200 to 1,400 cm -1 is set as D, a minimum intensity of 1,400 to 1,550 cm -1 is set as V, and a peak intensity of the spectrum of 1,550 to 1,700 cm -1 is set as G, an average D/G is 0.77 or more and 0.98 or less and an average V/G is 0.50 or more and 0.66 or less, and each of variation coefficients of D/G and V/G is 2% or less.

    TITANIUM OXIDE POWDER, AND DISPERSION LIQUID AND COSMETIC USING SAID POWDER
    8.
    发明公开
    TITANIUM OXIDE POWDER, AND DISPERSION LIQUID AND COSMETIC USING SAID POWDER 审中-公开

    公开(公告)号：EP3733607A1

    公开(公告)日：2020-11-04

    申请号：EP18893702.3

    申请日：2018-12-27

    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

    Inventor： YAKUBO Teppei ,  ITO Naoko ,  ITAGAKI Tetsuro

    IPC: C01G23/053 ,  A61K8/29 ,  A61Q1/00

    Abstract: The titanium oxide powder of the present invention is a titanium oxide powder which has a BET specific surface area of 5 m 2 /g or more and 15 m 2 /g or less, and contains octahedral-shaped particles, wherein each octahedral-shaped particle thereof has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or higher and 1000 nm or lower, and a value (D90/D10) is 1 or higher and 3 or lower, wherein the value is obtained by dividing a value (D90), which corresponds to 90% in a cumulative number percentage of the maximum values of line segments each of which connects two apexes which face each other, by a value (D10) which corresponds to 10% in the cumulative number percentage.

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