Patents by Inventor Katsuhiro Doi
Katsuhiro Doi 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: 20240139822Abstract: A roll mold manufacturing method using a roll mold manufacturing apparatus, the apparatus comprising a rotary device configured to rotate a roll base material having either a tubular shape or a circular-column shape, and a predetermined machining stage comprising multiple cutting blades, the method comprising: a P cutting step of cutting a roll base material surface with a P cutting blade on the machining stage while moving the machining stage in a direction of an orientation P along the roll length direction; subsequently a step of switching from the P cutting blade to an N cutting blade on the machining stage; and subsequently an N cutting step of cutting the roll base material surface with the N cutting blade on the machining stage while moving the machining stage in a direction of another orientation N along the roll length direction.Type: ApplicationFiled: March 25, 2022Publication date: May 2, 2024Applicant: Dexerials CorporationInventors: Katsuhiro DOI, Kazuhiko NODA
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Patent number: 11971569Abstract: There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.Type: GrantFiled: March 23, 2017Date of Patent: April 30, 2024Assignee: DEXERIALS CORPORATIONInventors: Shunichi Kajiya, Kyoko Sakurai, Katsuhiro Doi, Kazuya Hayashibe, Naoki Hanashima, Naoto Kaneko
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Publication number: 20230126879Abstract: Provided is a roll mold that has a plurality of linear grooves arranged side by side on its outer peripheral surface and in which an optical step between adjacent linear grooves is sufficiently small. A roll mold comprising, on an outer peripheral surface thereof, n linear grooves extending in a roll axial direction or a direction inclined with respect to the roll axial direction and arranged side by side, where n is 800 or more, wherein the n linear grooves are arranged in a manner that a gradual decrease and a gradual increase in groove depth are repeated, and the number of points at which a transition from the decrease to the increase in groove depth occurs is m or less, where m is selected from 2 to 8.Type: ApplicationFiled: April 5, 2021Publication date: April 27, 2023Applicant: Dexerials CorporationInventors: Katsuhiro DOI, Kazuhiko NODA
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Publication number: 20230045020Abstract: A transfer object comprises a substrate having one or more fine concave portions formed on a surface thereof. At least one of a sidewall and a bottom of each fine concave portion has an oscillation waveform satisfying at least one of the following oscillation waveform conditions: the oscillation waveform is continuous; the oscillation waveform is a composite waveform of a plurality of oscillation waveforms, and the plurality of oscillation waveforms are in phase with each other; fine concave portions of a plurality of rows are formed on the substrate, and oscillation waveforms of adjacent fine concave portions are in phase with each other; and fine concave portions of a plurality of rows are formed on the substrate, and oscillation waveforms of the fine concave portions are in phase with each other for every two pitches.Type: ApplicationFiled: October 4, 2022Publication date: February 9, 2023Applicant: Dexerials CorporationInventors: Kazuhiko NODA, Katsuhiro DOI, Asahiko NOGAMI, Kyoko SAKURAI
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Publication number: 20230025421Abstract: A method for manufacturing a roll mold by cutting a roll, includes generating a control waveform based on a signal corresponding to a rotary position of the roll, and making a plurality of cuts on a surface of the roll by, while the roll is rotated, reciprocating a cutting blade in a radial direction of the roll in accordance with the control waveform. Making the plurality of cuts includes at each of a plurality of predetermined locations, making a predetermined number of cuts of predetermined depth based on the control waveform. Generating the control waveform includes generating a control waveform dictating that, when multiple cuts are made at a predetermined location, each subsequent cut will have a smaller depth than a preceding cut.Type: ApplicationFiled: December 8, 2020Publication date: January 26, 2023Applicant: DEXERIALS CORPORATIONInventors: Kazuhiko NODA, Katsuhiro DOI, Kyoko SAKURAI, Asahiko NOGAMI, Mitsuo ARIMA
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Publication number: 20230015044Abstract: A method for manufacturing a roll mold by cutting a roll, includes generating a control waveform based on a signal corresponding to a rotary position of the roll, and making a plurality of cuts on a surface of the roll by, while the roll is rotated, reciprocating a cutting blade in a radial direction of the roll in accordance with the control waveform. Making the plurality of cuts includes at each of a plurality of predetermined locations, making a predetermined number of cuts of predetermined depth based on the control waveform. Generating the control waveform includes generating a control waveform dictating that the predetermined locations, the predetermined depths, or both are randomly selected. Generating the control waveform includes generating a control waveform dictating that, when multiple cuts are made at a predetermined location, each subsequent cut will have a smaller depth than a preceding cut.Type: ApplicationFiled: December 8, 2020Publication date: January 19, 2023Applicant: DEXERIALS CORPORATIONInventors: Kazuhiko NODA, Katsuhiro DOI, Kyoko SAKURAI, Asahiko NOGAMI, Mitsuo ARIMA
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Patent number: 11513270Abstract: An optical body including: a first optical layer which has a surface having a convex profile in which a plurality of one-directionally extending elongated convex portions are one-dimensionally aligned in one direction; an inorganic layer disposed on the surface of the first optical layer on a side having the convex profile and a second optical layer disposed on a side of the inorganic layer so that the convex profile is embedded; wherein the convex profile meets at least one of the following (1) to (4): (1) a height varies in an extending direction in each of the elongated convex portions, (2) a ridge portion meanders in a direction perpendicular to both the extending direction and a height direction of the convex portion in each of the elongated convex portions, (3) heights of the elongated convex portions adjacent to each other are different from each other, and (4) a triangular prism-shaped convex portion and an elongated convex portion having a curved surface are adjacent to each other.Type: GrantFiled: October 2, 2018Date of Patent: November 29, 2022Assignee: Dexerials CorporationInventors: Eiji Ohta, Tsutomu Nagahama, Shigehisa Ohkawara, Tatsuya Harimara, Katsuhiro Doi, Kazuhiko Noda, Akihiro Shibata, Kazuo Goto, Yasuyuki Kudo
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Patent number: 11491672Abstract: A new and improved microfabrication device, microfabrication method, transfer mold, and transfer object that can suppress a defect are provided. A microfabrication device comprises a tool mounting portion, a predetermined cutting tool, an oscillator, and a controller, wherein the controller performs a cutting process to satisfy at least one of: a cutting condition (1) that oscillations at a start point and an end point of each set are in phase with each other; and a cutting condition (2) that oscillations of the sets are in phase with each other.Type: GrantFiled: September 18, 2019Date of Patent: November 8, 2022Assignee: Dexerials CorporationInventors: Kazuhiko Noda, Katsuhiro Doi, Asahiko Nogami, Kyoko Sakurai
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Publication number: 20220347879Abstract: A transfer mold comprises a substrate having one or more fine concave portions formed on a surface thereof. At least one of a sidewall and a bottom of each fine concave portion has an oscillation waveform satisfying at least one of the following oscillation waveform conditions: (1) the oscillation waveform is continuous; (2) the oscillation waveform is a composite waveform of a plurality of oscillation waveforms, and the plurality of oscillation waveforms are in phase with each other; (3) fine concave portions of a plurality of rows are formed on the substrate, and oscillation waveforms of adjacent fine concave portions are in phase with each other; and (4) fine concave portions of a plurality of rows are formed on the substrate, and oscillation waveforms of the fine concave portions are in phase with each other for every two pitches.Type: ApplicationFiled: July 14, 2022Publication date: November 3, 2022Applicant: Dexerials CorporationInventors: Kazuhiko NODA, Katsuhiro DOI, Asahiko NOGAMI, Kyoko SAKURAI
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Publication number: 20220162035Abstract: A laminated film, including an adhesive layer peelably laminated on a base film, and a carrier film overlapping each other are passed between a bladed roller including a plurality of disk-shaped slitting blades arranged at a pitch of 0.5 mm or less and an anvil roller with the laminated film on the bladed roller side to slit the laminated film by score cutting. The slitting blades have a blade angle of 30° or less. By doing so, the laminated film including the adhesive layer peelably laminated on the base film is silt to have a tape width of 0.5 mm or less in such a way that the base film and the adhesive layer do not peel apart and the protrusion of the adhesive layer is suppressed.Type: ApplicationFiled: March 31, 2020Publication date: May 26, 2022Applicant: DEXERIALS CORPORATIONInventors: Hiroki TAMANO, Katsuhiro DOI, Kazuhiko NODA, Tomohisa KAWAI
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Publication number: 20220110217Abstract: To prevent defects in microparticles from occurring in a case of arraying the microparticles having a diameter of less than or equal to 50 ?m on a base material. Provided is a microparticle arraying mask for arraying microparticles having a diameter of less than or equal to 50 ?m on a base material. The microparticle arraying mask has through-holes into which the microparticles are inserted. An opening plane of the through-holes on a microparticle supply side has an area smaller than an area of an opening plane of the through-holes on a microparticle discharge side. In a case of assuming that a direction from the opening plane on the microparticle supply side to the opening plane on the microparticle discharge side is a positive direction of a z-axis, and a sectional area of the through-holes vertical to the z-axis is A, dA(z)/dz>0 holds in a whole region in the through-holes along the z-axis, and Expression (1) below is satisfied: 0.4?t/d?1.0??(1).Type: ApplicationFiled: January 24, 2020Publication date: April 7, 2022Applicant: DEXERIALS CORPORATIONInventors: Akihiro SHIBATA, Masahiro NISHIMOTO, Yusuke TANAKA, Hirokazu ODAGIRI, Katsuhiro DOI
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Publication number: 20210191024Abstract: There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.Type: ApplicationFiled: March 23, 2017Publication date: June 24, 2021Applicant: DEXERIALS CORPORATIONInventors: Shunichi KAJIYA, Kyoko SAKURAI, Katsuhiro DOI, Kazuya HAYASHIBE, Naoki HANASHIMA, Naoto KANEKO
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Publication number: 20200241186Abstract: An optical body including: a first optical layer which has a surface having a convex profile in which a plurality of one-directionally extending elongated convex portions are one-dimensionally aligned in one direction; an inorganic layer disposed on the surface of the first optical layer on a side having the convex profile and a second optical layer disposed on a side of the inorganic layer so that the convex profile is embedded; wherein the convex profile meets at least one of the following (1) to (4): (1) a height varies in an extending direction in each of the elongated convex portions, (2) a ridge portion meanders in a direction perpendicular to both the extending direction and a height direction of the convex portion in each of the elongated convex portions, (3) heights of the elongated convex portions adjacent to each other are different from each other, and (4) a triangular prism-shaped convex portion and an elongated convex portion having a curved surface are adjacent to each other.Type: ApplicationFiled: October 2, 2018Publication date: July 30, 2020Inventors: Eiji OHTA, Tsutomu NAGAHAMA, Shigehisa OHKAWARA, Tatsuya HARIMARA, Katsuhiro DOI, Kazuhiko NODA, Akihiro SHIBATA, Kazuo GOTO, Yasuyuki KUDO
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Publication number: 20200094430Abstract: A new and improved microfabrication device, microfabrication method, transfer mold, and transfer object that can suppress a defect are provided. A microfabrication device comprises a tool mounting portion, a predetermined cutting tool, an oscillator, and a controller, wherein the controller performs a cutting process to satisfy at least one of: a cutting condition (1) that oscillations at a start point and an end point of each set are in phase with each other; and a cutting condition (2) that oscillations of the sets are in phase with each other.Type: ApplicationFiled: September 18, 2019Publication date: March 26, 2020Applicant: Dexerials CorporationInventors: Kazuhiko NODA, Katsuhiro DOI, Asahiko NOGAMI, Kyoko SAKURAI
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Publication number: 20190276791Abstract: A cell culture sheet including: at least one cell culture region contributing to cell culture; and at least one antimicrobial region exhibiting antimicrobial action, which is adjacent to the cell culture region, recessed with respect to the cell culture region, and has a plurality of fine projections that do not exceed a surface of the cell culture region in height.Type: ApplicationFiled: March 5, 2019Publication date: September 12, 2019Inventors: Hirokazu Odagiri, Kazuya Hayashibe, Katsuhiro Doi
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Patent number: 10128056Abstract: The present invention is a dye-sensitized solar cell that has a pair of electrodes that oppose each other, a sealing section that joins the pair of electrodes, an electrolyte that fills a cell space that is surrounded by the pair of electrodes and the sealing section, wherein the sealing section has a resin sealing section that contains a resin, the resin sealing section has a changing-thickness section, the thickness of which increases or decreases as a distance from the electrolyte is increased and which has an inclined face, and the resin sealing section comes into contact, along the inclined face of the changing-thickness section, with an electrode of the pair of electrodes that opposes the inclined face.Type: GrantFiled: February 11, 2013Date of Patent: November 13, 2018Assignee: FUJIKURA LTD.Inventor: Katsuhiro Doi
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Patent number: 10049823Abstract: A dye-sensitized solar cell comprises a pair of electrodes that face each other; an electrolyte that is disposed between the pair of electrodes; and a sealing section that connects the pair of electrodes and is provided around the electrolyte. In the dye-sensitized solar cell, the sealing section comprises at least one corner section when the sealing section is viewed in planar view from the electrode side, and a first contact surface at the corner section with at least one of the pair of electrodes comprises a first curve line-containing surface containing a curved curve line on the electrolyte side.Type: GrantFiled: February 20, 2014Date of Patent: August 14, 2018Assignee: FUJIKURA LTD.Inventor: Katsuhiro Doi
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Patent number: 10020120Abstract: The present invention is an electronic device comprising a first substrate, a second substrate arranged opposite the first substrate, a sealed portion arranged between the first substrate and the second substrate, and a sealing portion that connects the first and the second substrate and is provided around the sealed portion, wherein at least a portion of the sealing portion following along the periphery of the sealed portion has outer resin sealing portions respectively fixed to the first substrate and the second substrate and an intermediate resin sealing portion arranged so as to be interposed by the outer resin sealing portions between the first substrate and the second substrate, the outer resin sealing portions and the intermediate resin sealing portion contain resin, and a melt flow rate or melting point of the intermediate resin sealing portion differs from a melt flow rate or melting point of the outer resin sealing portions.Type: GrantFiled: October 1, 2012Date of Patent: July 10, 2018Assignee: FUJIKURA LTD.Inventor: Katsuhiro Doi
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Patent number: 9536677Abstract: A dye-sensitized solar cell includes a first electrode; a second electrode that faces the first electrode; an electrolyte that is disposed between the first electrode and the second electrode; and an annular encapsulation unit that surrounds the electrolyte together with the first electrode and the second electrode, and connects the first electrode and the second electrode. In the dye-sensitized solar cell, the sealing portion has a resin sealing section formed of a resin. At least one interface of a first interface between the first electrode and the sealing portion, and a second interface between the second electrode and the sealing portion, constitutes a wide width section having the broadest sealing width among the sealing widths of the sealing portion, and the sealing portion has a narrow width section having a narrower sealing width than the wide width section.Type: GrantFiled: December 30, 2013Date of Patent: January 3, 2017Assignee: FUJIKURA LTD.Inventors: Kenichi Okada, Katsuhiro Doi
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Publication number: 20140166104Abstract: A dye-sensitized solar cell comprises a pair of electrodes that face each other; an electrolyte that is disposed between the pair of electrodes; and a sealing section that connects the pair of electrodes and is provided around the electrolyte. In the dye-sensitized solar cell, the sealing section comprises at least one corner section when the sealing section is viewed in planar view from the electrode side, and a first contact surface at the corner section with at least one of the pair of electrodes comprises a first curve line-containing surface containing a curved curve line on the electrolyte side.Type: ApplicationFiled: February 20, 2014Publication date: June 19, 2014Applicant: FUJIKURA LTD.Inventor: Katsuhiro DOI