Patents by Inventor Kenta Yamazaki
Kenta Yamazaki 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).
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Patent number: 11965591Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.Type: GrantFiled: May 25, 2022Date of Patent: April 23, 2024Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Isao Fujii, Yuji Yamazaki, Masatoshi Matsumoto, Kenta Ogasawara
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Publication number: 20240097653Abstract: In a composite filter device, a first acoustic wave resonator includes a functional electrode on a first main surface of a first piezoelectric substrate, and a wiring electrode is on the first main surface and is not connected to a signal potential. A support is on the first main surface and surrounds the first acoustic wave resonator. A second piezoelectric substrate is on the support and includes a third main surface closer to the support than a fourth main surface. A second acoustic wave resonator includes a functional electrode on the third main surface. The second acoustic wave resonator is a parallel-arm resonator higher in resonant frequency than any other parallel-arm resonator or a series-arm resonator lower in resonant frequency than any other series-arm resonator. The second acoustic wave resonator and the wiring electrode overlap each other when viewed in plan.Type: ApplicationFiled: September 14, 2023Publication date: March 21, 2024Inventors: Yasuhiro SHIMIZU, Sunao YAMAZAKI, Kenta MAEDA
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Publication number: 20240052209Abstract: A pressure sensitive adhesive sheet may include a base material and a hot-melt pressure sensitive adhesive layer which contains a softener, and further include a barrier layer disposed between the base material and the hot-melt pressure sensitive adhesive layer, the barrier layer containing at least one selected from the group consisting of a polyester-based resin, a polyurethane-based resin, and a polyolefin-based resin. The polyester-based resin may be at least one of a polyester resin or a modified polyester resin.Type: ApplicationFiled: November 22, 2021Publication date: February 15, 2024Applicant: LINTEC CORPORATIONInventors: Toshiaki NAGASAWA, Ayaka SETO, Kenta YAMAZAKI, Shinya SUZUKI
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Patent number: 11139458Abstract: An organic EL display device is provided in which a change in tint is reduced in a bent portion. This organic EL display device is an organic electroluminescent display device including, from a viewing side, a circularly polarizing plate, a first adhesion layer, and a bendable organic electroluminescent display panel, in which the circularly polarizing plate includes, from the viewing side, a linear polarizer, a second adhesion layer, and a phase difference layer functioning as a ?/4 plate, a complex modulus of elasticity of the first adhesion layer is 2.50×105 Pa or less, the first adhesion layer is thicker than the second adhesion layer, and an absorption axis of the linear polarizer is positioned at an angle of 0°±30° or 90°±30° with respect to an extension direction of a ridge line formed in a case where the organic electroluminescent display device is bent.Type: GrantFiled: January 23, 2020Date of Patent: October 5, 2021Assignee: FUJIFILM CorporationInventors: Toshihiro Konishi, Kenta Yamazaki, Shinpei Yoshida, Ryo Satake, Hiroyuki Okusa
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Publication number: 20210302835Abstract: There are provided a photosensitive resin composition containing at least one precursor selected from the group consisting of a polyimide precursor and a polybenzoxazole precursor, a compound having a sulfurous ester structure, and a photoradical polymerization initiator, and satisfies at least one of the following conditions 1, . . . , or 3; a pattern forming method using a photosensitive film formed from the photosensitive resin composition; a cured film formed from the photosensitive resin composition; a laminate including the cured film; and a device having the cured film or the laminate. the condition 1: the precursor contains a radically polymerizable group, the condition 2: the compound having a sulfurous ester structure contains a radically polymerizable group, and the condition 3: the photosensitive resin composition further contains a compound containing a radically polymerizable group, other than the precursor and the compound having a sulfurous ester structure.Type: ApplicationFiled: June 2, 2021Publication date: September 30, 2021Applicant: FUJIFILM CorporationInventors: Toshihide AOSHIMA, Kenta YAMAZAKI
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Publication number: 20210302836Abstract: There is provided a pattern forming method that includes an exposure step of exposing a photosensitive film to laser light; and a development step of developing the photosensitive film after the exposure to obtain a pattern, where the photosensitive film contains at least one precursor selected from the group consisting of a polyimide precursor and a polybenzoxazole precursor, and an onium salt.Type: ApplicationFiled: June 2, 2021Publication date: September 30, 2021Applicant: FUJIFILM CorporationInventors: Kenta YAMAZAKI, Toshihide AOSHIMA
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Patent number: 10705275Abstract: A composite film includes at least one phase difference layer, a substrate, and an inorganic layer, in which the phase difference layer is a layer formed by curing a composition including a liquid crystal compound, the inorganic layer includes silicon nitride, a distance between the substrate and a surface of the composite film is 60 ?m or less, with respect to each of the layers other than the substrate, a product E×t×1 of a modulus of elasticity E in unit of GPa, a thickness t in unit of ?m, and a distance 1 from a surface of the substrate to a center of each of the layer in unit of ?m satisfies Expression 1, and a total SUM(E×t×1) of E×t×1 of each of the layers other than the substrate satisfies Expression 2, 0.8?E×t×1 (Expression 1), SUM(E×t×1)?1500 (Expression 2); and the composite film.Type: GrantFiled: June 3, 2019Date of Patent: July 7, 2020Assignee: FUJIFILM CorporationInventors: Yuya Motomura, Kenta Yamazaki, Shinichi Morishima
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Publication number: 20200161589Abstract: An organic EL display device is provided in which a change in tint is reduced in a bent portion. This organic EL display device is an organic electroluminescent display device including, from a viewing side, a circularly polarizing plate, a first adhesion layer, and a bendable organic electroluminescent display panel, in which the circularly polarizing plate includes, from the viewing side, a linear polarizer, a second adhesion layer, and a phase difference layer functioning as a ?/4 plate, a complex modulus of elasticity of the first adhesion layer is 2.50×105 Pa or less, the first adhesion layer is thicker than the second adhesion layer, and an absorption axis of the linear polarizer is positioned at an angle of 0°±30° or 90°±30° with respect to an extension direction of a ridge line formed in a case where the organic electroluminescent display device is bent.Type: ApplicationFiled: January 23, 2020Publication date: May 21, 2020Applicant: FUJIFILM CorporationInventors: Toshihiro KONISHI, Kenta YAMAZAKI, Shinpei YOSHIDA, Ryo SATAKE, Hiroyuki OKUSA
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Publication number: 20190285788Abstract: A composite film includes at least one phase difference layer, a substrate, and an inorganic layer, in which the phase difference layer is a layer formed by curing a composition including a liquid crystal compound, the inorganic layer includes silicon nitride, a distance between the substrate and a surface of the composite film is 60 ?m or less, with respect to each of the layers other than the substrate, a product E×t×1 of a modulus of elasticity E in unit of GPa, a thickness t in unit of ?m, and a distance 1 from a surface of the substrate to a center of each of the layer in unit of ?m satisfies Expression 1, and a total SUM(E×t×1) of E×t×1 of each of the layers other than the substrate satisfies Expression 2, 0.8?E×t×1 (Expression 1), SUM(E×t×1)?1500 (Expression 2); and the composite film.Type: ApplicationFiled: June 3, 2019Publication date: September 19, 2019Applicant: FUJIFILM CorporationInventors: Yuya MOTOMURA, Kenta YAMAZAKI, Shinichi MORISHIMA
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Patent number: 9816565Abstract: Provided is a cage (5, 65, 95) for a constant velocity universal joint, which is formed into a ring shape with a substantially uniform thickness, including a plurality of pockets (20, 80, 110) formed in a circumferential direction of the cage (5, 65, 95), for receiving torque transmitting balls, respectively, the cage (5, 65, 95) being formed of carbon steel including 0.41 to 0.51 mass % of C, 0.10 to 0.35 mass % of Si, 0.60 to 0.90 mass % of Mn, 0.005 to 0.030 mass % of P, and 0.002 to 0.035 mass % of S, with the balance being Fe and an element inevitably remaining at the time of steelmaking and refining, the cage (5, 65, 95) being subjected to carburizing, quenching, and tempering as heat treatment, each of the plurality of pockets (20, 80, 110) having a side surface (23, 83, 113) finished after the heat treatment.Type: GrantFiled: August 1, 2013Date of Patent: November 14, 2017Assignee: NTN CORPORATIONInventors: Kazuhiko Yoshida, Masafumi Osugi, Kenta Yamazaki, Masato Chokyu, Rikuou Takagi
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Patent number: 9581206Abstract: A fixed type constant velocity universal joint has an outer joint member including first track groove portions and second track groove portions. Each of the first track groove portions includes an arc part having a curvature center that is not offset in an axial direction with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with inclination directions opposite to each other. Each of the second track groove portions has a different shape than the first track groove portions. Each of the first track groove portions and each of the second track groove portions are connected to each other at a position on an opening side with respect to the joint center.Type: GrantFiled: September 19, 2013Date of Patent: February 28, 2017Assignee: NTN CORPORATIONInventors: Kisao Yamazaki, Hiroyasu Hirukawa, Kenta Yamazaki
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Patent number: 9556915Abstract: Track grooves of an outer joint member include first and second track groove portions. Each of the first track groove portions is formed into an arc shape having a curvature center at a position offset to an opening side with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with their inclination directions opposite to each other. Each of the second track groove portions includes a linear part and is connected to the each of the first track groove portions at a position on the opening side with respect to the joint center. Track grooves of inner and outer joint members are formed to be mirror-image symmetrical with respect to a joint center plane at an operating angle of 0°.Type: GrantFiled: September 3, 2013Date of Patent: January 31, 2017Assignee: NTN CORPORATIONInventors: Hiroyasu Hirukawa, Kenta Yamazaki, Kisao Yamazaki
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Patent number: 9551382Abstract: Provided is a fixed type constant velocity universal joint, in which: each of first track groove portions positioned on an interior side of an outer joint member includes an arc part having a curvature center that is positioned without being offset in an axial direction with respect to a joint center; the first track groove portions are inclined in a peripheral direction with respect to a joint axial line (N-N) and adjacent to each other in the peripheral direction with their inclination directions opposite to each other; each of second track groove portions positioned on an opening side is formed into a different shape from a shape of the each of the first track groove portions so as to increase an effective track length at a maximum operating angle; the each of the first track groove portions and the each of the second track groove portions are connected to each other at a position on the opening side with respect to the joint center; each of track grooves of an inner joint member is formed so as to be mirrType: GrantFiled: October 10, 2013Date of Patent: January 24, 2017Assignee: NTN CORPORATIONInventors: Hiroyasu Hirukawa, Teruaki Fujio, Kenta Yamazaki
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Patent number: 9464674Abstract: In a fixed type constant velocity universal joint, track grooves of an outer joint member include first track groove portions positioned on an interior side and second track groove portions positioned on an opening side. The first track groove portions each have an arc-shaped ball raceway center line having a curvature center that is prevented from being offset in an axial direction of the outer joint member with respect to a joint center. Planes each including at least the ball raceway center line and the joint center are inclined with respect to a joint axial line with their inclination directions alternately opposite to each other in the first track groove portions that are adjacent to each other in a peripheral direction of the outer joint member.Type: GrantFiled: November 16, 2012Date of Patent: October 11, 2016Assignee: NTN CORPORATIONInventors: Kisao Yamazaki, Kenta Yamazaki, Hiroyasu Hirukawa
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Patent number: 9410581Abstract: In a fixed type constant velocity universal joint, track grooves of an outer joint member include first and second track groove portions positioned on interior and open sides, respectively. Each of the first track groove portions includes an arc-shaped ball raceway center line having a curvature center prevented from being offset in an axial direction of the outer joint member with respect to a joint center. Planes each including at least the ball raceway center line and the joint center are inclined with respect to a joint axial line with their inclination directions opposite to each other in the first track groove portions, which are adjacent to each other in a peripheral direction of the outer joint member. Each of the second track groove portions includes a ball raceway center line having a straight part when being projected onto corresponding one of the planes.Type: GrantFiled: October 19, 2012Date of Patent: August 9, 2016Assignee: NTN CORPORATIONInventors: Hiroyasu Hirukawa, Kenta Yamazaki, Kisao Yamazaki
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Patent number: 9223211Abstract: Provided is a photosensitive resin composition having high sensitivity and storage stability.Type: GrantFiled: January 28, 2015Date of Patent: December 29, 2015Assignee: FUJIFILM CorporationInventors: Kyouhei Sakita, Shinji Fujimoto, Mikio Nakagawa, Kenta Yamazaki
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Patent number: 9206855Abstract: Track grooves of an outer joint member include first and second track groove portions positioned on interior and opening sides, respectively. Each first track groove portion has an arc shape with a curvature center at a position offset to the opening side with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with their inclination directions opposite to each other. Each second track groove portion has a shape that is different than each of the first track groove portions so as to increase an effective track length at a maximum operating angle. The second track groove portions are connected to the first track groove portions at a position on the opening side with respect to the joint center.Type: GrantFiled: October 22, 2012Date of Patent: December 8, 2015Assignee: NTN CORPORATIONInventors: Kenta Yamazaki, Hiroyasu Hirukawa
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Publication number: 20150316108Abstract: Provided is a fixed type constant velocity universal joint, in which: each of first track groove portions positioned on an interior side of an outer joint member includes an arc part having a curvature center that is positioned without being offset in an axial direction with respect to a joint center; the first track groove portions are inclined in a peripheral direction with respect to a joint axial line (N-N) and adjacent to each other in the peripheral direction with their inclination directions opposite to each other; each of second track groove portions positioned on an opening side is formed into a different shape from a shape of the each of the first track groove portions so as to increase an effective track length at a maximum operating angle; the each of the first track groove portions and the each of the second track groove portions are connected to each other at a position on the opening side with respect to the joint center; each of track grooves of an inner joint member is formed so as to be mirrType: ApplicationFiled: October 10, 2013Publication date: November 5, 2015Applicant: NTN CORPORATIONInventors: Hiroyasu HIRUKAWA, Teruaki FUJIO, Kenta YAMAZAKI
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Patent number: 9169877Abstract: An outer joint member has first and second track groove portions located respectively on depth and opening sides. The first track groove portions each have a circular-arc ball-raceway center line having a curvature center that is not offset in an axial direction with respect to a joint center. The second track groove portions each have a ball-raceway center line including a straight part to increase an effective track length at a maximum operating angle. Track grooves of an inner joint member each have a ball-raceway center line that is mirror-image symmetrical with a ball-raceway center line of the paired track groove of the outer joint member with respect to a plane passing through the joint center at an operating angle of 0°.Type: GrantFiled: May 7, 2012Date of Patent: October 27, 2015Assignee: NTN CORPORATIONInventors: Hiroyasu Hirukawa, Kenta Yamazaki
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Patent number: 9163672Abstract: A fixed type constant velocity universal joint has track grooves of an outer joint member including first and second track groove portions located on depth and opening sides, respectively. The first track groove portions each have a circular-arc part having a curvature center that is not offset in an axial direction with respect to a joint center, are inclined in a circumferential direction with respect to a joint axial line, and are adjacent to each other in the circumferential direction with their inclination directions opposite to each other. The second track groove portions have a different shape than the first track groove portions to increase an effective track length with respect to a maximum operating angle. The first and second track groove portions are connected respectively to each other on the opening side with respect to the joint center.Type: GrantFiled: May 2, 2012Date of Patent: October 20, 2015Assignee: NTN CORPORATIONInventors: Kenta Yamazaki, Kisao Yamazaki, Teruaki Fujio