Patents by Inventor Naofumi Nakamura
Naofumi Nakamura 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: 10533934Abstract: According to one embodiment, a particle inspection system includes a voltage driving circuit which applies a driving voltage for a particle inspection to a particle inspection chip, a current-voltage conversion circuit which converts, into a voltage signal, a current signal output from the particle inspection chip when the driving voltage is applied to the particle inspection chip, a detection circuit which detects, based on the voltage signal, whether the sample liquid is introduced into a detection region of the particle inspection chip, and an analysis circuit which analyzes the fine particle, in the sample liquid based on the voltage signal. The voltage driving circuit varies the driving voltage based on the detection result of the detection circuit.Type: GrantFiled: January 18, 2017Date of Patent: January 14, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Michihiko Nishigaki, Hiroshi Hamasaki, Naofumi Nakamura, Kentaro Kobayashi, Hiroko Miki
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Patent number: 10500626Abstract: Provided is a method for producing a molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, in which a width of a punch 31 used in the drawing-out process on a rear end side is wider than a width of the punch on a distal end side, and an ironing process is performed on a region corresponding to a flange of a base metal sheet 2 by pushing the base metal sheet together with the punch 31 into a pushing hole 30a, and the drawing process is carried out using a die and a drawing sleeve, and processing is performed on a region subjected to the ironing process in the drawing-out process, while maintaining a constant mold gap between the die and the drawing sleeve.Type: GrantFiled: February 21, 2017Date of Patent: December 10, 2019Assignee: Nippon Steel Nisshin Co., Ltd.Inventors: Naofumi Nakamura, Yudai Yamamoto
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Publication number: 20190337038Abstract: The present invention provides a method for manufacturing a molded member by carrying out a multi-stage drawing process and at least one finishing ironing process on a base metal sheet, the molded member comprising: a tubular body; and a flange formed at an end portion of the body, wherein the multi-stage drawing process comprises: a preliminary drawing process for forming a preliminary body having a body element from the base metal sheet; and a plurality of compression drawing processes performed after the preliminary drawing process, the compression drawing processes drawing the body element while applying compressive force along a depth direction of the body element to a circumferential wall of the body element; and wherein the at least one finishing ironing process is carried out such that a mold clearance of an upper portion of the body element is narrower than a mold clearance of a lower portion of the body element.Type: ApplicationFiled: June 20, 2017Publication date: November 7, 2019Inventors: Naofumi Nakamura, Yudai Yamamoto
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Patent number: 10456820Abstract: A method for manufacturing a molded member is provided wherein the base metal sheet is subjected to multi-stage drawing to manufacture the molded member, including a tubular body and a flange formed at an end portion of the body. The multi-stage drawing includes: preliminary drawing for forming a preliminary body having a body element from the base metal sheet; at least one compression drawing performed after the preliminary drawing and forming the body by drawing the body element while applying a compressive force to the body element; and at least one finishing ironing performed after the at least one compression drawing.Type: GrantFiled: March 2, 2017Date of Patent: October 29, 2019Assignee: Nippon Steel Nisshin Co., Ltd.Inventors: Naofumi Nakamura, Yudai Yamamoto
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Publication number: 20190321874Abstract: With regard to a part having a cut end surface using a surface-treated steel sheet as the source material, provided are a part for which the cut end surface has excellent durability, and a cutting method therefor. In this part that includes a cut end surface consisting of a surface-treated steel sheet that has been cut, the shape of the cut end surface is such that the length of a first shear droop occurring in the sheet thickness direction is at least 0.10 times the sheet thickness of the surface-treated steel sheet, and the length of a second sheer droop occurring in the planar direction is at least 0.45 times the sheet thickness of the surface-treated steel sheet. Furthermore, in the cutting process a die is used for which the clearance between the punch and the die is 1-20% of the plate thickness of the surface-treated steel plate, and the shoulder portion of the die and/or the punch is provided with a radius of curvature of at least 0.12 times the plate thickness of the surface-treated steel plate.Type: ApplicationFiled: June 25, 2019Publication date: October 24, 2019Inventors: Hirokazu SASAKI, Naofumi NAKAMURA, Yudai YAMAMOTO
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Patent number: 10421113Abstract: A formed material manufacturing method according to present invention includes the steps of forming a convex formed portion by performing at least one forming process on a surface treated metal plate, and performing ironing on the formed portion using an ironing mold after forming the formed portion. The ironing mold includes a punch that is inserted into the formed portion, and a die having a pushing hole into which the formed portion is pushed together with the punch. An inner peripheral surface of the pushing hole extends non-parallel to an outer peripheral surface of the punch, and the inner peripheral surface is provided with a clearance that corresponds to an uneven plate thickness distribution, in the pushing direction, of the formed portion prior to the ironing relative to the outer peripheral surface to ensure that an amount of ironing applied to the formed portion remains constant in the pushing direction.Type: GrantFiled: October 23, 2014Date of Patent: September 24, 2019Assignee: NIPPON STEEL NISSHIN CO., LTD.Inventors: Naofumi Nakamura, Yudai Yamamoto, Jun Kurobe
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Publication number: 20190283101Abstract: Provided are: a method for producing a molded material comprising tubular body and a flange formed at an end portion of the body; and a molded material produced thereby, which can prevent the flange of the molded material becoming unnecessarily thick, avoid the generation of wrinkles and buckling, and allow weight reduction of the molded material and size reduction of a base metal sheet. When producing the molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, a first drawing process is carried out on a region corresponding to the body while opening a die and a drawing sleeve, and an ironing process is carried out on a region corresponding to the flange while keeping a constant interval of a mold gap between the die and the drawing sleeve.Type: ApplicationFiled: February 21, 2017Publication date: September 19, 2019Inventors: Naofumi Nakamura, Yudai Yamamoto
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Publication number: 20190232352Abstract: A formed material manufacturing method according to present invention includes the steps of forming a convex formed portion by performing at least one forming process on a surface treated metal plate, and performing ironing on the formed portion using an ironing mold after forming the formed portion. The ironing mold includes a punch that is inserted into the formed portion, and a die having a pushing hole into which the formed portion is pushed together with the punch. An inner peripheral surface of the pushing hole extends non-parallel to an outer peripheral surface of the punch, and the inner peripheral surface is provided with a clearance that corresponds to an uneven plate thickness distribution, in the pushing direction, of the formed portion prior to the ironing relative to the outer peripheral surface to ensure that an amount of ironing applied to the formed portion remains constant in the pushing direction.Type: ApplicationFiled: April 11, 2019Publication date: August 1, 2019Applicant: NISSHIN STEEL CO., LTD.Inventors: Naofumi NAKAMURA, Yudai YAMAMOTO, Jun KUROBE
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Patent number: 10337976Abstract: According to one embodiment, a microanalysis chip includes a substrate, a flow channel in which a sample liquid is allowed to flow, the flow channel being provided on a main surface side of the substrate, a reservoir in which the sample liquid is allowed to be stored, the reservoir being provided on a main surface of the substrate, including a bank having a go-around shape and further including a liquid introduction inlet for connection to an end of the flow channel, the liquid introduction inlet being provided on the main surface of the substrate in the bank, and a filter which is provided between the liquid introduction inlet and the end of the flow channel and includes a first micropore for allowing passage of a fine particle in the sample liquid.Type: GrantFiled: June 5, 2015Date of Patent: July 2, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Michihiko Nishigaki, Yutaka Onozuka, Kentaro Kobayashi, Hiroshi Hamasaki, Naofumi Nakamura
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Patent number: 10281429Abstract: According to one embodiment, a semiconductor micro-analysis chip includes a first flow channel provided with a substrate surface, the flow channel engraved on the substrate into which a sample liquid can flow, micropore provided with a part of the flow channel, a reservoir provided with at least one end of the flow channel, the reservoir engraved on the substrate for inlet and outlet of the sample liquid, and a first electrode provided with a part of the flow channel or of the reservoir. The electrode is disposed from the bottom surface of the flow channel or of the reservoir to the substrate surface, and a side surface which connects the bottom surface and the substrate surface is tapered for reducing a bend in a height direction of the electrode.Type: GrantFiled: January 18, 2017Date of Patent: May 7, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kentaro Kobayashi, Michihiko Nishigaki, Hiroshi Hamasaki, Naofumi Nakamura
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Publication number: 20190064157Abstract: According to one embodiment, a detection device is disclosed. The detection device includes a first region, a first electrode on the first region, a second region, a second electrode on the second region, a partition partitioning the first region and the second region and including a through hole, thereby communicating the first region with the second region. The device further includes a probe which binds specifically to the detection target, and is detachably connected to the first electrode, a detacher to detach the probe from the first electrode, a determination unit to determine whether the first liquid contains a detection target based on a change of electrical condition between the first electrode and the second electrode in a state where the first region and the second region are supplied with the first liquid and the second liquid, respectively.Type: ApplicationFiled: February 28, 2018Publication date: February 28, 2019Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takuya MIYAGAWA, Sadato HONGO, Hiroko MIKI, Hiroshi HAMASAKI, Kentaro KOBAYASHI, Ping WANG, Naofumi NAKAMURA
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Publication number: 20190054515Abstract: An object of the present invention is to provide a method for manufacturing a molded member, which can maintain high accuracy circularity of an inner diameter of a tubular body even if a thickness of a base metal sheet varies and which can prevent occurrence of adhesion, seizure of the like of the base metal sheet to a die used for finishing ironing. The base metal sheet is subjected to multi-stage drawing to manufacture the molded member including a tubular body and a flange formed at an end portion of the body. The multi-stage drawing includes: preliminary drawing for forming a preliminary body having a body element from the base metal sheet; at least one compression drawing performed after the preliminary drawing and forming the body by drawing the body element while applying a compressive force to the body element; and at least one finishing ironing performed after the at least one compression drawing to ensure dimensional accuracy.Type: ApplicationFiled: March 2, 2017Publication date: February 21, 2019Inventors: Naofumi NAKAMURA, Yudai YAMAMOTO
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Publication number: 20190047034Abstract: Provided is a method for producing a molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, in which a width of a punch 31 used in the drawing-out process on a rear end side is wider than a width of the punch on a distal end side, and an ironing process is performed on a region corresponding to a flange of a base metal sheet 2 by pushing the base metal sheet together with the punch 31 into a pushing hole 30a, and the drawing process is carried out using a die and a drawing sleeve, and processing is performed on a region subjected to the ironing process in the drawing-out process, while maintaining a constant mold gap between the die and the drawing sleeve.Type: ApplicationFiled: February 21, 2017Publication date: February 14, 2019Inventors: Naofumi Nakamura, Yudai Yamamoto
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Patent number: 10113947Abstract: According to one embodiment, a semiconductor analysis chip for detecting a particle in a sample liquid includes a semiconductor substrate, a first flow channel provided in a surface portion of the semiconductor substrate, a second flow channel provided in a surface portion of the semiconductor substrate, part of the second flow channel contacting or intersecting the first flow channel, a micropore provided in a contact portion or an intersection of the first and second flow channels, and configured to permit the particle to pass therethrough, a first electrode provided in the first flow channels, a second electrode provided in the second passage, and a third electrode provided in the first flow channel downstream of the first electrode.Type: GrantFiled: March 2, 2016Date of Patent: October 30, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kentaro Kobayashi, Hiroshi Hamasaki, Naofumi Nakamura
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Publication number: 20180099325Abstract: A formed material 1 having a cylindrical trunk portion 10 and a flange portion 11 formed at an end section of the trunk portion is manufactured by performing multi-stage drawing of a material metal sheet. Multi-stage drawing includes: preliminary drawing that forms, from a material metal sheet 2, a preform 20 having a trunk element 20a; compression drawing that is performed at least once after the preliminary drawing and that forms the trunk portion 10 by drawing the trunk element 20a while applying a pressure-adjustable compressive force to the trunk element 20a; and finish-ironing that is performed for securing dimensional precision at least once following the compression drawing.Type: ApplicationFiled: March 15, 2016Publication date: April 12, 2018Applicant: NISSHIN STEEL CO., LTD.Inventors: Naofumi NAKAMURA, Yudai YAMAMOTO
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Publication number: 20180088081Abstract: According to one embodiment, an analysis chip for detection of particles in a sample liquid includes a substrate, a channel provided on a surface portion of the substrate, a liquid storage portion provided on a part of the channel to store the sample liquid, holes being provided at a bottom portion of the liquid storage portion to connect the liquid storage portion and the channel, and first electrodes provided in the channel or the liquid storage portion.Type: ApplicationFiled: March 17, 2017Publication date: March 29, 2018Inventors: Kentaro Kobayashi, Hiroshi Hamasaki, Ping Wang, Naofumi Nakamura
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Patent number: 9914637Abstract: According to one embodiment, an electronic device includes a base region, an element portion located on the base region, the element portion including a movable portion, and a protective film overlying the element portion and forming a cavity on an inner side of the protective film. The protective film includes a first protective layer and a second protective layer located on the first protective layer. A hole extends in a direction parallel to a main surface of the base region, and the second protective layer covers the hole.Type: GrantFiled: August 29, 2016Date of Patent: March 13, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Akira Fujimoto, Naofumi Nakamura, Tamio Ikehashi
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Patent number: 9901970Abstract: A formed material having a tubular body and a flange formed at an end of the body is manufactured by multistage drawing of a blank metal sheet. The multistage drawing includes preliminary drawing in which a preliminary body having a body preform is formed from the blank metal sheet, and at least one compression drawing which is performed after the preliminary drawing and in which the body is formed by drawing the body preform while applying a compressive force to the body preform. The at least one compression drawing is performed so as to be completed before the pad portion of pressurization means reaches bottom dead center, and a support force supporting the pad portion acts as the compressive force upon the body preform when the body preform is drawn.Type: GrantFiled: November 7, 2014Date of Patent: February 27, 2018Assignee: NISSHIN STEEL CO., LTD.Inventors: Naofumi Nakamura, Yudai Yamamoto, Katsuhide Nishio
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Patent number: 9895691Abstract: According to one embodiment, an analysis package, including a board, an analysis chip provided on the board, the chip including a detector for detecting a particle, a flow channel of a sample liquid, and a liquid receiver of the sample liquid, a first mold layer provided on the analysis chip, the first mold layer including an opening above the liquid receiver, and a second mold layer provided on the board and the first mold layer, the second mold layer including an opening above the opening of the first mold layer, wherein the respective openings of the first and second mold layers are connected above the liquid receiver to allow the sample liquid to be introduced into the liquid receiver from outside.Type: GrantFiled: September 8, 2015Date of Patent: February 20, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hiroshi Hamasaki, Michihiko Nishigaki, Yutaka Onozuka, Kentaro Kobayashi, Hiroko Miki, Naofumi Nakamura
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Patent number: 9885680Abstract: According to one embodiment, an analysis package including an analysis chip provided on a main surface of a semiconductor substrate, the chip including a flow channel, both ends of which are open at peripheral parts of the substrate, and a microaperture which is provided in a middle of the flow channel and which allows a particle to pass therethrough, a package board on which the chip is mounted, liquid receivers provided on the package board, the liquid receivers being connected to openings, and electrodes, at least parts of which are provided on parts of bottom surfaces of the liquid receivers, the electrodes being provided at positions corresponding to an upstream side and a downstream side of the microaperture.Type: GrantFiled: September 9, 2015Date of Patent: February 6, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hiroshi Hamasaki, Michihiko Nishigaki, Yutaka Onozuka, Kentaro Kobayashi, Hiroko Miki, Naofumi Nakamura