Patents by Inventor Yuta IMAIZUMI
Yuta IMAIZUMI 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: 20240072101Abstract: An LED array includes: a substrate having a depressing-projecting structure formed on a surface of the substrate; a planarization layer formed on the depressing-projecting structure; a plurality of micro LED elements each of which is formed on the planarization layer; and a stray light attenuating groove formed between a pair of adjacent micro LED elements among the plurality of micro LED elements, and extending from toward the pair of micro LED elements to toward the depressing-projecting structure at least part way of the planarization layer.Type: ApplicationFiled: August 5, 2023Publication date: February 29, 2024Applicants: SHARP KABUSHIKI KAISHA, Meijo UniversityInventors: YOSHIHIRO UETA, Motoaki IWAYA, Yoshinobu SUEHIRO, Yuta IMAIZUMI, Tatsunari SAITO
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Patent number: 11084199Abstract: The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, and a ring-shaped second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and the honeycomb structure forming die has a groove region where movement of the kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole, in abutment surfaces of the first die and the second die.Type: GrantFiled: July 31, 2017Date of Patent: August 10, 2021Assignee: NGK Insulators, Ltd.Inventors: Yuta Imaizumi, Kazuhiko Hamatsuka
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Patent number: 10688706Abstract: The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, a ring-shaped second die, and a reticulated member interposed between the first die and the second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and movement of a kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole through meshes of the reticulated member.Type: GrantFiled: July 31, 2017Date of Patent: June 23, 2020Assignee: NGK Insulators, Ltd.Inventors: Yuta Imaizumi, Kazuhiko Hamatsuka
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Publication number: 20180169896Abstract: A manufacturing method of a honeycomb structure include a forming step of extruding a kneaded material including a forming raw material by use of a horizontal forming machine include a forming die in which latticed slits are formed in a kneaded material discharge surface, to obtain a round pillar-shaped honeycomb formed body having latticed partition walls; and a firing step of firing the obtained honeycomb formed body to prepare the honeycomb structure. In the forming step, there is used the forming die in which there are formed the slits different in lattice shape between a central portion and a circumferential portion in the kneaded material discharge surface, and the forming die is disposed in an orientation in which an inclination of one row of the latticed slits formed in the central portion is within an angle of ±10° to a vertical direction, to extrude the kneaded material in a horizontal direction.Type: ApplicationFiled: December 4, 2017Publication date: June 21, 2018Applicant: NGK INSULATORS, LTD.Inventors: Yuta Imaizumi, Kazuhiko Hamatsuka
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Publication number: 20180043595Abstract: The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, a ring-shaped second die, and a space forming member interposed between the first die and the second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and in a space formed by the space forming member, movement of a kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole.Type: ApplicationFiled: July 31, 2017Publication date: February 15, 2018Applicant: NGK INSULATORS, LTD.Inventors: Yuta IMAIZUMI, Kazuhiko HAMATSUKA
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Publication number: 20180043596Abstract: The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, and a ring-shaped second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and the honeycomb structure forming die has a groove region where movement of the kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole, in abutment surfaces of the first die and the second die.Type: ApplicationFiled: July 31, 2017Publication date: February 15, 2018Applicant: NGK INSULATORS, LTD.Inventors: Yuta IMAIZUMI, Kazuhiko HAMATSUKA
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Publication number: 20180043597Abstract: The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, a ring-shaped second die, and a reticulated member interposed between the first die and the second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and movement of a kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole through meshes of the reticulated member.Type: ApplicationFiled: July 31, 2017Publication date: February 15, 2018Applicant: NGK INSULATORS, LTD.Inventors: Yuta IMAIZUMI, Kazuhiko HAMATSUKA