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公开(公告)号：US10892107B2
公开(公告)日：2021-01-12
申请号：US15515053
申请日：2015-09-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Teppei Yakubo , Shingo Takano
Abstract: The present invention relates to a method for producing titanium oxide particles, comprising a step of producing a mixed solution by mixing a hydrolysis product of a titanium alkoxide or a titanium metal salt and a compound having a five-membered ring containing nitrogen and a step of generating titanium oxide fine particles by heating and pressurizing the mixed solution, titanium oxide particles produced by the same production method, a dispersion solution of titanium oxide particles produced using the same titanium oxide particles, titanium oxide paste, a titanium oxide film, and a dye-sensitized solar cell.
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公开(公告)号：US10598849B2
公开(公告)日：2020-03-24
申请号：US16367726
申请日：2019-03-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Shingo Takano , Yuki Kugimoto , Yoshizumi Ishikawa
Abstract: An optical device including a core layer that includes an EO polymer, and clad layers that are disposed on and beneath the core layer, in which a polymer polymerized in a composition containing a reactive ionic liquid is used in the clad layers.
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公开(公告)号：US12204185B2
公开(公告)日：2025-01-21
申请号：US17757951
申请日：2020-10-20
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kosuke Okahashi , Shingo Takano
Abstract: In order to provides an optical waveguide element and an optical modulator that can prevent the damage to the substrate and the deterioration of the properties of the substrate that may occur due to the stress, by reducing the influence of stress on the substrate by the buffer layer, the optical waveguide 1 is provided with a substrate 5 having an electro-optical effect; an optical waveguide 10 formed on the substrate 5; a first buffer layer 9a provided on the substrate 5; and a second buffer layer 9b provided under the substrate 5, wherein the first buffer layer 9a and the second buffer layer 9b are composed of substantially the same material and have substantially the same thickness, and the first buffer layer 9a and the second buffer layer 9b are formed to be in contact with an upper surface and lower surface of the substrate 5, respectively.
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公开(公告)号：US20180284488A1
公开(公告)日：2018-10-04
申请号：US15939315
申请日：2018-03-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yoshizumi Ishikawa , Shingo Takano
IPC: G02F1/01
Abstract: An optical device includes: an electro-optical element; a connector for input and output of an electric signal; a relay substrate electrically connecting the connector and the optical element; a pair of support parts supporting the relay substrate; and a housing accommodating the optical element, the relay substrate, and the pair of support parts, in which the optical element includes a substrate having an optical waveguide formed therein, and a modulation electrode formed on a surface of the substrate, the relay substrate includes a dielectric substrate, and a signal electrode and a ground electrode provided on one principal surface of the dielectric substrate, the signal electrode and the ground electrode are electrically connected to the modulation electrode and the connector, the support parts clamps the relay substrate, and an air gap is formed between the other principal surface of the relay substrate and an inner bottom surface of the housing.
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公开(公告)号：US10088698B1
公开(公告)日：2018-10-02
申请号：US15939315
申请日：2018-03-29
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yoshizumi Ishikawa , Shingo Takano
Abstract: An optical device includes: an electro-optical element; a connector for input and output of an electric signal; a relay substrate electrically connecting the connector and the optical element; a pair of support parts supporting the relay substrate; and a housing accommodating the optical element, the relay substrate, and the pair of support parts, in which the optical element includes a substrate having an optical waveguide formed therein, and a modulation electrode formed on a surface of the substrate, the relay substrate includes a dielectric substrate, and a signal electrode and a ground electrode provided on one principal surface of the dielectric substrate, the signal electrode and the ground electrode are electrically connected to the modulation electrode and the connector, the support parts clamps the relay substrate, and an air gap is formed between the other principal surface of the relay substrate and an inner bottom surface of the housing.
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Patent Agency Ranking
公开(公告)号：US11977284B2
公开(公告)日：2024-05-07
申请号：US17827022
申请日：2022-05-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Shotaro Hirata , Kosuke Okahashi , Yu Kataoka , Shingo Takano
CPC classification number: G02F1/0356 , G02B6/12004 , G02B6/136 , G02F1/212 , G02F1/2255 , G02B2006/12126 , G02B2006/12142
Abstract: There is provided an optical waveguide device including: a substrate; an optical waveguide formed on the substrate; and a working electrode that controls a light wave propagating through the optical waveguide, in which the working electrode includes a first base layer made of a first material, a first conductive layer on the first base layer, a second base layer made of a second material different from the first material, which is on the first conductive layer, and a second conductive layer on the second base layer, and an edge of the second base layer is covered with the second conductive layer, in a cross-section perpendicular to an extending direction of the optical waveguide.
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公开(公告)号：US11656487B2
公开(公告)日：2023-05-23
申请号：US17490590
申请日：2021-09-30
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yu Kataoka , Shingo Takano , Norikazu Miyazaki
IPC: G02F1/035
CPC classification number: G02F1/0353 , G02F2201/063
Abstract: An optical waveguide element includes a substrate and an optical waveguide that is disposed on the substrate. The optical waveguide has an effective refractive index change portion in which an effective refractive index of the optical waveguide related to a fundamental mode A parallel to a plane of polarization of a light wave propagated through the optical waveguide changes according to propagation of the light wave. In the effective refractive index change portion, a cross-sectional shape of the optical waveguide which is perpendicular to a propagation direction of the light wave is set such that the effective refractive index of the optical waveguide related to the fundamental mode A is higher than an effective refractive index of the optical waveguide related to another fundamental mode B perpendicular to the fundamental mode A.
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公开(公告)号：US20230367170A1
公开(公告)日：2023-11-16
申请号：US18246358
申请日：2021-09-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Kenta Oishi , Yu Kataoka , Shingo Takano
CPC classification number: G02F1/2255 , G02F1/212
Abstract: An optical waveguide element includes: a substrate on which an optical waveguide is formed; and an electrode that is formed on the substrate and controls a light wave propagating through the optical waveguide. The optical waveguide includes a protruding portion extending on the substrate, and the electrode includes a base layer made of Nb, and an upper layer formed on the base layer, the base layer being formed between the substrate and the upper layer. The occurrence of loss in propagating light is effectively suppressed due to the existence of the electrode that controls the propagating light in the optical waveguide element using the protruding optical waveguide
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公开(公告)号：US20220381977A1
公开(公告)日：2022-12-01
申请号：US17827022
申请日：2022-05-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Masayuki Motoya , Shotaro Hirata , Kosuke Okahashi , Yu Kataoka , Shingo Takano
Abstract: There is provided an optical waveguide device including: a substrate; an optical waveguide formed on the substrate; and a working electrode that controls a light wave propagating through the optical waveguide, in which the working electrode includes a first base layer made of a first material, a first conductive layer on the first base layer, a second base layer made of a second material different from the first material, which is on the first conductive layer, and a second conductive layer on the second base layer, and an edge of the second base layer is covered with the second conductive layer, in a cross-section perpendicular to an extending direction of the optical waveguide.
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10.发明公开公开(公告)号：US20230400718A1
公开(公告)日：2023-12-14
申请号：US18250622
申请日：2021-10-22
Applicant: SUMITOMO OSAKA CEMENT CO., LTD. , National Institute of Information and Communications Technology
Inventor： Shingo Takano , Yu Kataoka , Satoshi Oikawa , Junichiro Ichikawa , Yuya Yamaguchi , Atsushi Kanno , Naokatsu Yamamoto , Tetsuya Kawanishi
CPC classification number: G02F1/035 , G02F1/0102 , G02F2201/02 , G02F2201/18
Abstract: An optical waveguide element includes a substrate, an optical waveguide disposed inside the substrate or on the substrate, and an electrode provided along the optical waveguide, working on the optical waveguide to generate a phase change in a light wave propagating through the optical waveguide. The electrode is a traveling-wave electrode. In a modulation section where the light wave is controlled by the electrode, the electrode and the optical waveguide are configured so that the phase change generated in a first modulation section located within a predetermined distance range from a downstream side end portion along a propagation direction of a traveling wave of an electrical signal propagating through the electrode has a sign opposite to a sign of the phase change generated in a second modulation section located within a predetermined distance range from an input end of the electrical signal on an upstream side along the propagation direction.
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