Keiichi Takahashi 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).
Abstract: A semiconductor device comprises a substrate. A plurality of electrode layers and a plurality of insulating layers are formed in an alternating stack above the substrate. A semiconductor column extends through the plurality of electrode layers and the plurality of insulating layers. The semiconductor column comprises a single-crystal semiconductor material on an outer peripheral surface facing the electrode and insulating layers. First insulating films are formed between the semiconductor column and the electrode layers. The first insulating films are spaced from each other along the column length. Each first insulating film corresponds to one electrode layer. A charge storage layer is between each of the first insulating films and the electrode layers. A second insulating film is between the charge storage layer and each of the electrode layers.
Abstract: A semiconductor memory device includes a channel layer and a gate electrode. A first insulating layer is between the semiconductor layer and the gate electrode. A second insulating layer is between the first insulating layer and the gate electrode. A storage region is between the first insulating layer and the second insulating layer. The storage region comprises metal or semiconductor material. A coating layer comprises silicon and nitrogen and surrounds the storage region. The coating layer is between the storage region and the second insulating layer and between the storage region and the first insulating layer.
Abstract: Single perforating unit is enabled to perforate for file binders and to cut milling grooves, while with a simple structure file-binder storage and booklet-binding can be carried out reliably. Configurations include: a convey-in path for sequentially transferring sheets; a stacker for collating into bundles sheets from the convey-in path; and an adhesive-layer applicator for adding an adhesive layer to the spine-closure edge of sheet bundles from the stacker. A perforating unit is provided in along the convey-in path, and a control unit for controlling position and/or number of perforations made by the perforating unit is provided with (1) a first operation mode in which it effects the punching of a predetermined number of holes in the edge of sheets, and (2) a second operation mode in which it effects the formation of a predetermined number of crenulated grooves in the edge of sheets.
Abstract: A battery is provided. The battery includes a cathode; an anode; an interlayer provided between the cathode and the anode; wherein the interlayer includes an electrolytic solution, a polymer compound, and one or more of a polyphosphate salt, a melamine salt, a metal hydroxide, and a metal hydrate.
September 25, 2017
Date of Patent:
February 11, 2020
Murata Manufacturing Co., Ltd.
Keiichi Kagami, Kimio Takahashi, Kojiro Kita, Kazuhito Hatta
Abstract: A semiconductor device includes a semiconductor element, a packaging material that encapsulates the semiconductor element, and a metal member electrically connected to the semiconductor element and having a protruding portion protruding from an end face of the packaging material, in which the protruding portion has a lateral peripheral edge along the end face of the packaging material, a longitudinal peripheral edge along the normal direction of the end face, and a corner peripheral edge formed by side portions that are disposed at the corners of the protruding portion and continue to the lateral peripheral edge and the longitudinal peripheral edge, and in which the corner peripheral edge includes a first side portion intersecting substantially orthogonally with the lateral peripheral edge and extending toward the end face of the packaging material and a second side portion with one end thereof intersecting substantially orthogonally with the first side portion and the other end intersecting substantially ort
Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces. This display system is suitable for a wearable display.
Abstract: In one embodiment, a semiconductor storage device includes a first interconnect extending in a first direction, a plurality of second interconnects extending in a second direction different from the first direction, and a plurality of first insulators provided alternately with the second interconnects. The device further includes a resistance change film provided between the first interconnect and at least one of the second interconnects and including a first metal layer or a first semiconductor layer that includes a first face provided on a first interconnect side and a second face provided on a second interconnect side, at least any of the first face and the second face having a curved plane shape.
Abstract: An electrode for a nonaqueous electrolyte secondary battery includes an electrode mixture layer. The electrode mixture layer contains a hollow active material particle and a needle-shaped filler having a through-hole that extends through the needle-shaped filler in a longitudinal direction. The needle-shaped filler is arranged on surfaces of the hollow active material particle.
Abstract: A positive electrode of a lithium-ion secondary battery contains first positive electrode active material particles and second positive electrode active material particles. The first positive electrode active material particles have a first composition represented by a compositional formula LiNix1Coy1Mnz1O2 (here, x1, y1, and z1 are numerical values satisfying 0<x1<1, 0<y1<1, 0.3<z1<0.5, and x1+y1+z1=1). The second positive electrode active material particles have a second composition represented by a compositional formula LiNix2Coy2Mnz2O2 (here, x2, y2, and z2 are numerical values satisfying 0<x2<1, 0<y2<1, 0<z2<0.2, and x2+y2+z2=1). The surface of at least one of the first positive electrode active material particles and the second positive electrode active material particles is coated with a transition metal oxide.
Abstract: An intrusion prevention device includes a reception unit, a monitoring unit, and a determination unit. The reception unit receives, from a control target device, a notification indicating a state of the control target device. The monitoring unit receives a control command transmitted from a control device to the control target device. The determination unit determines whether to permit or block passage of the control command received by the monitoring unit in accordance with the state of the control target device received by the reception unit.
September 26, 2017
September 26, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, MITSUBISHI HEAVY INDUSTRIES, LTD.
Abstract: [Purpose] To provide a radiographic imaging apparatus capable of quickly acquiring three-dimensional image data of a target-of-interest when performing an operative procedure such as interventional treatment [Solving Means] A region-of-interest extraction unit 39 extracts a predetermined region as a region-of-interest from each of a series of two-dimensional images. The reconstruction unit 41 reconstructs a three-dimensional image of a region including a stent based on each of the images of the portion corresponding to the region-of-interest. That is, since the reconstruction unit 41 reconstructs each of a series of two-dimensional images P using an image of the region-of-interest corresponding to a part of the whole, the time required to reconstruct the three-dimensional image of the region including the stent can be shortened.
March 16, 2018
September 19, 2019
Michel Dargis, Wataru TAKAHASHI, Keiichi GOTO
Abstract: A semiconductor memory device includes a plurality of first interconnections extending in a first direction, and a second interconnection extending in a second direction different from the first direction. The device further includes a resistance change film provided between the plurality of first interconnections and the second interconnection, the resistance change film including (a) silicon and a semiconductor layer including one or more elements selected from among oxygen, carbon, nitrogen, phosphorus, boron, and germanium, or (b) a first layer containing the germanium and a second layer containing the silicon.
Abstract: A compact illuminator for a see-through image display system with highly uniform light distribution is disclosed. This invention enables wearable displays such as eye-glass type see-through display. This system provides a wide divergent beam from a display device so that a viewer can have a large eyebox.
Abstract: A method of manufacturing a non-aqueous electrolyte solution secondary battery includes: (A) preparing a first composite material by mixing a first positive electrode active material, a first conductive material and a first binder; (B) preparing a second composite material by mixing a second positive electrode active material, a second conductive material and a second binder; and (C) manufacturing a positive electrode by forming a positive electrode composite layer including the first composite material and the second composite material. The first positive electrode active material has an average discharge potential lower than that of the second positive electrode active material. The first conductive material has a first OAN. The second conductive material has a second OAN. A ratio of the second OAN to the first OAN is 1.3 or more and 2.1 or less. A sum of the first OAN and the second OAN is 31.64 ml/100 g or less.
Abstract: Provided is a superfine polyester fiber containing at least 98 wt % of a polyethylene terephthalate component, and characterized by fulfilling the following conditions: (1) the reduced viscosity (?sp/c) is at least 0.80 dl/g; (2) the total fineness is 7-120 dtex, and the single filament fineness is no more than 0.5 dtex; and (3) the toughness parameter (X) indicated by formula (1) is at least 2.0, the tensile strength is at least 3.5 cN/dtex and the tensile elongation is at least 12%. X=(tensile strength×?tensile elongation)/(total fineness×single filament fineness)??formula (1).
Abstract: An attention attracting device for a vehicle includes an electronic control unit configure to: detect a plurality of types of attention information around an own vehicle; apply vibration, by using a vibrator, to a vehicular seat; display, using a display, an attention information content corresponding to each of the plurality of types of attention information; when the information detection unit detects attention information, operate the vibrator when the attention information is detected and cause a display to display the attention information content corresponding to the detected attention information when the attention information is detected.
Abstract: A positive electrode includes first positive electrode active material particles and second positive electrode active material particles. The first positive electrode active material particles include 0.1% by mass or more and 1% by mass or less of lithium carbonate and a first lithium transition metal oxide as a remainder. The first lithium transition metal oxide is represented by LiM1(1-z1)Mnz1O2 (0.05?z1?0.20). The second positive electrode active material particles include 0.01% by mass or more and 0.05% by mass or less of lithium carbonate and a second lithium transition metal oxide as a remainder. The second lithium transition metal oxide is represented by LiM2(1-z2)Mnz2O2 (0.40?z2?0.60). An electrolytic solution includes 1% by mass or more and 5% by mass or less of an overcharging additive and a solvent and a lithium salt as a remainder.
Abstract: A non-aqueous electrolyte secondary battery includes at least an electrode composite material layer, an intermediate layer, and an electrode current collector. The intermediate layer is arranged between the electrode composite material layer and the electrode current collector. The intermediate layer contains at least a foaming filler, a resin, and a conductive material. A value calculated by dividing an amount (mass %) of the foaming filler by an amount (mass %) of the resin is not smaller than 1.1 and not greater than 2.8 and a value calculated by dividing an amount (mass %) of the foaming filler by an amount (mass %) of the conductive material is not smaller than 8 and not greater than 14. The intermediate layer has a thickness not smaller than 2 ?m and not greater than 7 ?m.
October 23, 2018
April 25, 2019
Koji Torita, Keiichi Takahashi, Yusuke Fukumoto
Abstract: Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNiaCobMncO2 wherein a, b and c satisfy the following conditions: 0.35?a?0.45, 0.15?b?0.25, 0.35?c?0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNixCoyMnzO2 wherein x, y and z satisfy the following conditions: 0.35?x?0.45, 0.45?y?0.55, 0.05?z?0.
Abstract: A positive electrode mixture layer (12) includes a first layer (12a) that has a main surface MS and a second layer (12b) formed closer to the positive electrode current collector (11) side than the first layer (12a). A ratio of the volume of the first layer (12a) to the volume of the positive electrode mixture layer (12) is 20 to 75 vol %. The first layer (12a) contains lithium iron phosphate (LFP) (1) and lithium nickel cobalt manganese composite oxide (NCM) (2). A ratio of the mass of the LFP (1) to the total mass of the LFP (1) and the NCM (2) in the first layer (12a) is more than 0 and 80 mass % or less. The second layer (12b) contains NCM (2). A ratio of the mass of the LFP (1) to the total mass of the positive electrode active material in the positive electrode mixture layer (12) is 7.5 to 20 mass %. A maximum pore size of the first layer (12a) is 0.50 to 0.70 ?m.