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公开(公告)号：US20220142602A1
公开(公告)日：2022-05-12
申请号：US17579616
申请日：2022-01-20
Applicant: FUJIFILM CORPORATION
Inventor： Tsutomu SASAKI , Tetsu MIYOSHI
IPC: A61B7/04 , B06B1/06 , H01L41/053 , H01L41/18 , A61B5/00 , A61B5/28 , A61B5/33 , H04R1/46 , H04R17/02 , H04R17/00
Abstract: Provided is a stethoscope including: a support base that has an opening portion; a piezoelectric film that is supported by the support base in a state in which a surface exposed from the opening portion is convexly curved, and that detects a vibration caused by a sound which is generated from an object to be measured; and a protective layer that is disposed on a surface of the piezoelectric film on a side which comes into contact with the object to be measured, and that has an acoustic impedance between an acoustic impedance of the object to be measured and an acoustic impedance of the piezoelectric film.
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公开(公告)号：US20190264104A1
公开(公告)日：2019-08-29
申请号：US16409883
申请日：2019-05-13
Applicant: FUJIFILM Corporation
Inventor： Masashi ONO , Tsutomu SASAKI
Abstract: An object of the present invention is to provide a core shell particle having high luminous efficacy and a narrow emission half-width; a method of producing the same; and a film formed of the core shell particle. The core shell particle of the present invention includes: a core which contains a Group III element and a Group V element; a first shell which covers at least a part of a surface of the core; a second shell which covers at least a part of the first shell; and a coordination molecule in at least a part of an outermost surface, in which at least oxygen is detected by X-ray photoelectron spectroscopy analysis, and a molar ratio of the oxygen to the Group III element contained in the core, which is acquired by X-ray photoelectron spectroscopy analysis, is 6.1 or less.
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公开(公告)号：US20190218456A1
公开(公告)日：2019-07-18
申请号：US16367250
申请日：2019-03-28
Applicant: FUJIFILM Corporation
Inventor： Tsutomu SASAKI , Masashi ONO
CPC classification number: C09K11/703 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C01B25/08 , C01G15/00 , C09K11/02 , C09K11/08 , C09K11/70 , H01L29/06
Abstract: An object of the present invention is to provide a semiconductor nanoparticle-containing dispersion liquid having high initial luminous efficacy and exhibiting excellent moisture resistance; and a film produced using the dispersion liquid. The semiconductor nanoparticle-containing dispersion liquid of the present invention contains semiconductor nanoparticles from which zinc, sulfur, and indium are detected by X-ray photoelectron spectroscopy; and acrylate or methacrylate, in which a molar ratio of zinc to indium in the semiconductor nanoparticles which is acquired by the X-ray photoelectron spectroscopy satisfies Expression (1a). 2.25
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公开(公告)号：US20250107449A1
公开(公告)日：2025-03-27
申请号：US18889387
申请日：2024-09-19
Applicant: FUJIFILM CORPORATION
Inventor： Tsutomu SASAKI , SEIGO NAKAMURA
Abstract: In a piezoelectric element and an actuator, the piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode provided on the substrate in this order, in which the first piezoelectric film and the second piezoelectric film each have a perovskite-type oxide as a main component, and one of the first piezoelectric film and the second piezoelectric film is an epitaxial film and the other is a uniaxial alignment film.
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公开(公告)号：US20230071365A1
公开(公告)日：2023-03-09
申请号：US18055836
申请日：2022-11-16
Applicant: FUJIFILM CORPORATION
Inventor： Tsutomu SASAKI
IPC: A61B7/04
Abstract: A stethoscope comprising: a support base having a contact surface that comes into contact with an object to be measured, a rear surface provided on a side opposite to the contact surface, and a side surface that connects the contact surface and the rear surface to each other and has a neck portion having a diameter smaller than a diameter of each of the contact surface and the rear surface; a piezoelectric film that is supported by the support base and detects a vibration caused by a sound generated from the object to be measured; a first sound absorbing material that is provided on an outer surface of the rear surface; and a second sound absorbing material that is provided on an outer surface of the side surface on a side of the contact surface with respect to the neck portion.
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Patent Agency Ranking
公开(公告)号：US20240114797A1
公开(公告)日：2024-04-04
申请号：US18454073
申请日：2023-08-23
Applicant: FUJIFILM CORPORATION
Inventor： Hiroyuki KOBAYASHI , Seigo NAKAMURA , Shinya SUGIMOTO , Tsutomu SASAKI
IPC: H10N30/50 , H10N30/20 , H10N30/80 , H10N30/853
CPC classification number: H10N30/50 , H10N30/206 , H10N30/802 , H10N30/8554
Abstract: A piezoelectric element includes a substrate, a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode, in which both the first piezoelectric film and the second piezoelectric film have spontaneous polarizations aligned in a film thickness direction and directions of the spontaneous polarizations are the same, and in a case where in a hysteresis curve of one piezoelectric film, a coercive voltage Vcf+, a coercive voltage Vcf−, |Vcf+−Vcf−|=ΔVcf, and the larger of an absolute value of Vcf+ and an absolute value of Vcf− is denoted by Vcf, and in a hysteresis curve of the other piezoelectric film, a coercive voltage Vcr+, a coercive voltage Vcr−, |Vcr+−Vcr−|=ΔVcr, and the larger of an absolute value of Vcr+ and an absolute value Vcr− is denoted by Vcr, ΔVcr
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公开(公告)号：US20240114796A1
公开(公告)日：2024-04-04
申请号：US18454072
申请日：2023-08-23
Applicant: FUJIFILM CORPORATION
Inventor： Seigo NAKAMURA , Hiroyuki KOBAYASHI , Shinya SUGIMOTO , Tsutomu SASAKI
IPC: H10N30/50 , H10N30/20 , H10N30/80 , H10N30/853
CPC classification number: H10N30/50 , H10N30/206 , H10N30/802 , H10N30/8554
Abstract: A piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode which are provided on the substrate in this order, in which both the first piezoelectric film and the second piezoelectric film contain a perovskite-type oxide containing Pb Zr, Ti, and M, as a main component, Pb composition ratios in the perovskite-type oxides contained in the first piezoelectric film and the second piezoelectric film are different from each other, and polarization-electric field hysteresis measured for the first piezoelectric film with the first electrode grounded and the second electrode as a drive electrode, and polarization-electric field hysteresis measured for the second piezoelectric film with the second electrode grounded and the third electrode as a drive electrode are shifted in the same electric field direction with respect to origins thereof.
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公开(公告)号：US20230070250A1
公开(公告)日：2023-03-09
申请号：US17891850
申请日：2022-08-19
Applicant: FUJIFILM Corporation
Inventor： Tsutomu SASAKI , Fumihiko MOCHIZUKI
IPC: H01L41/047 , H01L41/187
Abstract: The piezoelectric laminate and the piezoelectric element have, on a substrate in the following order, a lower electrode layer and a piezoelectric film containing a perovskite-type oxide, in which the lower electrode layer includes the metal layer containing Ni and a surface layer containing a Ni oxide or a Ni oxynitride, and in the lower electrode layer, the surface layer is arranged on the side closest to the piezoelectric film.
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9.发明申请公开(公告)号：US20200052068A1
公开(公告)日：2020-02-13
申请号：US16660236
申请日：2019-10-22
Applicant: FUJIFILM Corporation
Inventor： Tsutomu SASAKI
IPC: H01L29/06 , H01L29/205 , H01L29/225
Abstract: An object of the present invention is to provide a semiconductor nanoparticle exhibiting excellent air durability, a semiconductor nanoparticle-containing dispersion liquid containing the semiconductor nanoparticle, and a film containing the semiconductor nanoparticle. In the semiconductor nanoparticle of the present invention, zinc, sulfur, and indium are detected by energy dispersive X-ray analysis, and a molar ratio Zn/In of zinc to indium which is acquired by the energy dispersive X-ray analysis satisfies Expression (1a). 7≤Zn/In≤15 (1a)
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公开(公告)号：US20180366674A1
公开(公告)日：2018-12-20
申请号：US16115052
申请日：2018-08-28
Applicant: FUJIFILM Corporation
Inventor： Tsutomu SASAKI
IPC: H01L51/50 , H01L51/00 , H01L31/055
Abstract: It is an object of the present invention to provide a semiconductor nanoparticle having an excellent durability, and a dispersion liquid and a film, each of which uses the semiconductor nanoparticle. The semiconductor nanoparticle according to the present invention includes a core containing a Group III element and a Group V element, in which the nanoparticle contains carbon, oxygen, and sulfur, as detected by X-ray photoelectron spectroscopy, has peak A located at 2800 cm−1 to 3000 cm−1, peak B located at 1000 cm−1 to 1200 cm−1, and peak C located at 2450 cm−1 to 2650 cm−1, as detected by Fourier transform infrared spectroscopy, and contains a ligand having two or more mercapto groups.
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