Patents by Inventor Yuki OI
Yuki OI 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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Publication number: 20240102813Abstract: The function input means 71 accepts input of a cost function that calculates a cost incurred in at least one of a selection of a candidate relay point and a design of a route, the cost function being represented as a linear sum of terms weighted by degree of importance attached to each of the features that an expert is assumed to intend when selecting the candidate relay point and design of the route. The learning means 72 learns the cost function by inverse reinforcement learning using training data that includes relay point information which is data that maps information indicating a relay point with surrounding information of the relay point and usage information of the relay point, and route result information which is result data of a route that pass through each relay point.Type: ApplicationFiled: February 1, 2021Publication date: March 28, 2024Applicant: NEC CorporationInventors: Asako Fujii, Riki Eto, Yuki Chiba, Norihito Oi
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Publication number: 20230288744Abstract: Provided are a liquid crystal member and a millimeter-wave modulation element with the liquid crystal member including a liquid crystal layer having a non-flat surface. The liquid crystal member includes a liquid crystal layer in which a liquid crystal composition which contains a liquid crystal compound having a polymerizable group and a polymerization initiator is immobilized in an aligned state, with at least one main surface of two main surfaces of the liquid crystal layer at both ends in a thickness direction is a non-flat surface having various shapes in a region on the non-flat surface side of one of the two main surfaces, a slow axis of the liquid crystal compound has an equal angle with respect to an adjacent non-flat surface, and in a region on the other main surface side, slow axes of the liquid crystal compound are parallel to each other.Type: ApplicationFiled: April 26, 2023Publication date: September 14, 2023Applicant: FUJIFILM CorporationInventors: Yuki OI, Takao TAGUCHI
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Publication number: 20230258993Abstract: Provided are a liquid crystal member and a polarizing lens, that can obtain desired optical characteristics in a liquid crystal member including a liquid crystal layer having a concave-convex surface. The liquid crystal member includes a liquid crystal layer in which a liquid crystal composition which contains a liquid crystal compound having a polymerizable group and a polymerization initiator is immobilized in an aligned state, in which the liquid crystal compound has magnetic susceptibility anisotropy, at least one main surface of two main surfaces of the liquid crystal layer at both ends in a thickness direction is a non-flat surface having any of a concave shape, a convex shape, or a concave-convex shape, and slow axes of the liquid crystal compound present in a region in a vicinity of each of the two main surfaces are parallel to each other.Type: ApplicationFiled: April 26, 2023Publication date: August 17, 2023Applicant: FUJIFILM CorporationInventors: Yuki OI, Takao TAGUCHI
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Publication number: 20230166289Abstract: Provided is a manufacturing method for an optically anisotropic film in which a tilt angle of a liquid crystal compound is controlled to be constant in a thickness direction. The method includes, in the following order, steps of applying a photo-alignment composition onto a base material to form a photo-alignment composition layer, irradiating a surface of the photo-alignment composition layer with a non-polarized and collimated ultraviolet ray in an oblique direction, applying the liquid crystal composition onto the photo-alignment composition layer irradiated with the ultraviolet ray to form a liquid crystal composition layer, a applying a magnetic field to the liquid crystal composition layer along a direction substantially parallel to an irradiation direction of the ultraviolet ray in irradiating step at a temperature at which the liquid crystal composition in the liquid crystal composition layer exhibits an alignment state, and curing the liquid crystal composition layer.Type: ApplicationFiled: January 25, 2023Publication date: June 1, 2023Applicant: FUJIFILM CorporationInventors: Takao TAGUCHI, Yuki OI
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Patent number: 10498311Abstract: A crystal resonator includes a flat plate-shaped crystal element and excitation electrodes. The crystal element has principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis in a range of 15 to 25 degrees around a Z-axis. The Z?-axis is an axis of rotating the Z-axis in a range of 33 to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal. The excitation electrodes include a first region with a circular outer shape and a second region. The second region is formed at a peripheral area of the first region. The second region has a thickness thinner than the first region and has an elliptical outer shape. The elliptical shape has a long axis extending in a direction in a range of ?5 to +15 degrees with respect to a direction that the X?-axis extends.Type: GrantFiled: March 17, 2017Date of Patent: December 3, 2019Assignee: NIHON DEMPA KOGYO CO., LTD.Inventors: Shigeru Obara, Tetsuya Sato, Masaaki Nakahara, Tomonori Shibazaki, Yuki Oi, Yuya Nishimura
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Patent number: 10476472Abstract: A quartz crystal device includes a quartz-crystal vibrating piece, a container, and a pedestal. The container houses the quartz-crystal vibrating piece. The pedestal is located between the quartz-crystal vibrating piece and the container for connecting and fixing the quartz-crystal vibrating piece to the container. The pedestal is configured with a crystal. The pedestal is fixed to the container at three places of a first fixation point, a second fixation point, and a third fixation point in a plan view. The first fixation point, the second fixation point, and the third fixation point are configured so as to become positions where an inner center, an outer center, or a gravity center of a triangle formed by connection of the first, second and third fixation points and a gravity center of the pedestal match.Type: GrantFiled: February 27, 2018Date of Patent: November 12, 2019Assignee: NIHON DEMPA KOGYO CO., LTD.Inventor: Yuki Oi
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Patent number: 10425059Abstract: A crystal resonator includes a crystal element and excitation electrodes. The crystal element has a pair of principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z?-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. Elliptical mesa portions or elliptical inverted mesa portions are formed on the respective principal surfaces. The mesa portions project from outer peripheries of the principal surfaces. The inverted mesa portions are depressed from the outer peripheries of the principal surfaces.Type: GrantFiled: April 13, 2017Date of Patent: September 24, 2019Assignee: NIHON DEMPA KOGYO CO., LTD.Inventors: Shigeru Obara, Tetsuya Sato, Masaaki Nakahara, Tomonori Shibazaki, Yuki Oi, Yuya Nishimura
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Publication number: 20180254762Abstract: A quartz crystal device includes a quartz-crystal vibrating piece, a container, and a pedestal. The container houses the quartz-crystal vibrating piece. The pedestal is located between the quartz-crystal vibrating piece and the container for connecting and fixing the quartz-crystal vibrating piece to the container. The pedestal is configured with a crystal. The pedestal is fixed to the container at three places of a first fixation point, a second fixation point, and a third fixation point in a plan view. The first fixation point, the second fixation point, and the third fixation point are configured so as to become positions where an inner center, an outer center, or a gravity center of a triangle formed by connection of the first, second and third fixation points and a gravity center of the pedestal match.Type: ApplicationFiled: February 27, 2018Publication date: September 6, 2018Applicant: NIHON DEMPA KOGYO CO., LTD.Inventor: Yuki OI
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Publication number: 20170302249Abstract: A crystal resonator includes a crystal element and excitation electrodes. The crystal element has a pair of principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z?-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. Elliptical mesa portions or elliptical inverted mesa portions are formed on the respective principal surfaces. The mesa portions project from outer peripheries of the principal surfaces. The inverted mesa portions are depressed from the outer peripheries of the principal surfaces.Type: ApplicationFiled: April 13, 2017Publication date: October 19, 2017Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Shigeru OBARA, Tetsuya SATO, Masaaki NAKAHARA, Tomonori SHIBAZAKI, Yuki OI, Yuya NISHIMURA
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Publication number: 20170279434Abstract: A crystal resonator includes a flat plate-shaped crystal element and excitation electrodes. The crystal element has principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis in a range of 15 to 25 degrees around a Z-axis. The Z?-axis is an axis of rotating the Z-axis in a range of 33 to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal. The excitation electrodes include a first region with a circular outer shape and a second region. The second region is formed at a peripheral area of the first region. The second region has a thickness thinner than the first region and has an elliptical outer shape. The elliptical shape has a long axis extending in a direction in a range of ?5 to +15 degrees with respect to a direction that the X?-axis extends.Type: ApplicationFiled: March 17, 2017Publication date: September 28, 2017Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Shigeru OBARA, Tetsuya SATO, Masaaki NAKAHARA, Tomonori SHIBAZAKI, Yuki OI, Yuya NISHIMURA
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Publication number: 20170257077Abstract: A crystal resonator includes a flat plate-shaped crystal element and excitation electrodes. The crystal element has principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z?-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. The excitation electrodes are each formed into an elliptical shape. The elliptical shape has a long axis extending in a direction in a range of ?5 degrees to +15 degrees with respect to a direction that the X?-axis extends.Type: ApplicationFiled: March 2, 2017Publication date: September 7, 2017Applicant: NIHON DEMPA KOGYO CO., LTD.Inventors: Shigeru OBARA, Tetsuya SATO, Masaaki NAKAHARA, Tomonori SHIBAZAKI, Yuki OI, Yuya NISHIMURA