Patents by Inventor Naoki Hirakawa
Naoki Hirakawa 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).
-
Publication number: 20230399728Abstract: An austenitic stainless steel material comprises, on a mass basis, 0.200% or less of C, 4.00% or less of Si, 5.00% or less of Mn, 4.00 to 10.00% of Ni, 12.00 to 18.00% of Cr, 3.50% or less of Cu, 1.00 to 5.00% of Mo, and 0.200% or less of N, a total amount of C and N of 0.100% or more, and the balance being Fe and impurities; wherein the austenitic stainless steel material has a value of Md30 of ?40.0 to 0° C., wherein the value of Md30 is represented by the following equation (1): Md30=551?462(C+N)?9.2Si?8.1Mn?29(Ni+Cu)?13.7Cr?18.5Mo??(1) in which the symbols of the elements each represents a content (% by mass) of each element.Type: ApplicationFiled: May 19, 2021Publication date: December 14, 2023Inventors: Masaya TANAKA, Naoki HIRAKAWA
-
Publication number: 20230250522Abstract: An austenitic stainless steel material consisting of, on a mass basis, 0.200% or less of C, 1.00 to 3.50% of Si, 5.00% or less of Mn, 4.00 to 10.00% of Ni, 12.00 to 18.00% of Cr, 3.500% or less of Cu, 1.00 to 5.00% of Mo, and 0.200% or less of N, a total amount of C and N is 0.100% or more, and the balance is Fe and impurities; wherein the austenitic stainless steel material has a composition having a value of Md30 of -40.0 to 0° C.; the austenitic stainless steel material has a metallographic structure comprising 25 to 35% by volume of strain-induced martensite phase; and the austenitic stainless steel material has a tensile strength (TS) of 1450 MPa or more, an elongation at break (EL) of 12.0% or more, TS x EL of 24000 or more, and a stress relaxation percentage of 1.20% or less.Type: ApplicationFiled: May 11, 2021Publication date: August 10, 2023Applicant: NIPPON STEEL STAINLESS STEEL CORPORATIONInventors: Naoki HIRAKAWA, Masaya TANAKA, Eiichiro ISHIMARU
-
Patent number: 10903461Abstract: Provided is a battery armoring stainless steel foil which, without the need for a special treatment such as corona discharge, has excellent adhesiveness to resin after being thermally shocked and after being immersed in an electrolyte solution. A battery armoring stainless steel foil (1) includes an oxide film (1a), having a thickness of not less than 2 nm, which contains (i) one or more metallic elements, existing as a hydroxide, in an amount of not less than 35 mol percent and (ii) SiO2 in an amount of not more than 40 mol percent, the battery armoring stainless steel foil (1) having an arithmetic mean roughness Ra of less than 0.1 ?m but not less than 0.02 ?m in a direction orthogonal to a direction in which the battery armoring stainless steel foil (1) has been rolled.Type: GrantFiled: May 20, 2016Date of Patent: January 26, 2021Assignee: Nisshin Steel Co., Ltd.Inventors: Daichi Ueda, Shoichi Matsuo, Takahiro Fujii, Naoki Hirakawa, Shuichi Sugita, Yukio Oda
-
Patent number: 10087498Abstract: Provided is a battery armoring stainless steel foil which has excellent adhesiveness to resin after being thermally shocked and after being immersed in an electrolyte solution. A battery armoring stainless steel foil (1) includes an oxide film (1a), having a thickness of not less than 2 nm, which contains (i) Fe in an amount of not less than 40 mol percent, (ii) Cr in a lesser amount than Fe, and (iii) Si in an amount of not more than 40 mol percent, the battery armoring stainless steel foil (1) having an arithmetic mean roughness Ra of less than 0.1 ?m but not less than 0.02 ?m in a direction orthogonal to a direction in which the battery armoring stainless steel foil (1) has been rolled.Type: GrantFiled: May 20, 2016Date of Patent: October 2, 2018Assignee: Nisshin Steel Co., Ltd.Inventors: Daichi Ueda, Shoichi Matsuo, Takahiro Fujii, Naoki Hirakawa, Shuichi Sugita, Yukio Oda
-
Patent number: 10025439Abstract: A touch sensing system includes a capacitive sense array. Each sensor has a unique location type. The system includes a capacitance measurement circuit coupled to the array, which measures capacitance changes at each sensor. The system also includes a memory device that stores three or more adjustment parameters. Each parameter corresponds to one or more location types, and is used in computing virtual sensor values. The system receives measured capacitance changes corresponding to a touch on the array and identifies a first sensor whose measured capacitance change is a local maximum. The system determines a location type of the first sensor. According to the location type, the adjustment parameters corresponding to the location type, and the measured capacitance changes, the system computes virtual sensor measurements. The system then computes a centroid of the touch using the measured capacitance changes and the virtual sensor measurements.Type: GrantFiled: April 4, 2016Date of Patent: July 17, 2018Assignee: PARADE TECHNOLOGIES, LTD.Inventor: Naoki Hirakawa
-
Publication number: 20180166661Abstract: Provided is a battery armoring stainless steel foil which, without the need for a special treatment such as corona discharge, has excellent adhesiveness to resin after being thermally shocked and after being immersed in an electrolyte solution. A battery armoring stainless steel foil (1) includes an oxide film (1a), having a thickness of not less than 2 nm, which contains (i) one or more metallic elements, existing as a hydroxide, in an amount of not less than 35 mol percent and (ii) SiO2 in an amount of not more than 40 mol percent, the battery armoring stainless steel foil (1) having an arithmetic mean roughness Ra of less than 0.1 ?m but not less than 0.02 ?m in a direction orthogonal to a direction in which the battery armoring stainless steel foil (1) has been rolled.Type: ApplicationFiled: May 20, 2016Publication date: June 14, 2018Inventors: Daichi Ueda, Shoichi Matsuo, Takahiro Fujii, Naoki Hirakawa, Shuichi Sugita, Yukio Oda
-
Publication number: 20180127843Abstract: Provided is a battery armoring stainless steel foil which has excellent adhesiveness to resin after being thermally shocked and after being immersed in an electrolyte solution. A battery armoring stainless steel foil (1) includes an oxide film (1a), having a thickness of not less than 2 nm, which contains (i) Fe in an amount of not less than 40 mol percent, (ii) Cr in a lesser amount than Fe, and (iii) Si in an amount of not more than 40 mol percent, the battery armoring stainless steel foil (1) having an arithmetic mean roughness Ra of less than 0.1 ?m but not less than 0.02 ?m in a direction orthogonal to a direction in which the battery armoring stainless steel foil (1) has been rolled.Type: ApplicationFiled: May 20, 2016Publication date: May 10, 2018Inventors: Daichi Ueda, Shoichi Matsuo, Takahiro Fujii, Naoki Hirakawa, Shuichi Sugita, Yuklo Oda
-
Patent number: 9904427Abstract: The various implementations described herein include systems, methods and/or devices used to enable underwater non-conductive touch tracking. An exemplary method is performed at a touch sensitive device and includes: detecting submersion of a capacitive sense array (CSA), including detecting increased electrode responses from at least a subset of a plurality of sensor electrodes of the CSA that exceed a predetermined electrode response criterion. The method further includes: (1) identifying one or more normalization factors for the CSA based on the detected increased electrode responses from the subset of the plurality of sensor electrodes, and (2) normalizing, using the one or more normalization factors, the CSA to form a substantially uniform baseline response across the CSA. The method further includes during the submersion, and subsequent to the normalizing, identifying one or more subsequent electrode responses that differ from the substantially uniform baseline response by at least a threshold amount.Type: GrantFiled: February 2, 2016Date of Patent: February 27, 2018Assignee: PARADE TECHNOLOGIES, LTD.Inventors: Ryan Lester Tan Co, Naoki Hirakawa
-
Publication number: 20160291737Abstract: A touch sensing system includes a capacitive sense array. Each sensor has a unique location type. The system includes a capacitance measurement circuit coupled to the array, which measures capacitance changes at each sensor. The system also includes a memory device that stores three or more adjustment parameters. Each parameter corresponds to one or more location types, and is used in computing virtual sensor values. The system receives measured capacitance changes corresponding to a touch on the array and identifies a first sensor whose measured capacitance change is a local maximum. The system determines a location type of the first sensor. According to the location type, the adjustment parameters corresponding to the location type, and the measured capacitance changes, the system computes virtual sensor measurements. The system then computes a centroid of the touch using the measured capacitance changes and the virtual sensor measurements.Type: ApplicationFiled: April 4, 2016Publication date: October 6, 2016Inventor: Naoki Hirakawa
-
Patent number: 8900107Abstract: To provide a conductive rubber member which exhibits small variation in electrical resistance and a stable electrical resistance for a long period of time. The conductive rubber member include a conductive elastic layer formed of a rubber material which has been imparted with electrical conductivity, wherein the conductive elastic layer has a surface-treatment layer which has been produced through impregnating a surface portion of the conductive elastic layer with a surface-treating liquid containing an isocyanate compound and carbon black which has undergone dispersion treatment.Type: GrantFiled: September 1, 2008Date of Patent: December 2, 2014Assignee: Synztec Co., Ltd.Inventors: Shinji Motokawa, Naoki Hirakawa
-
Patent number: 8283945Abstract: FPGAs and MPLDs, which are conventional programmable semiconductor devices, have had poor cost performance and did not suitably take long signal lines into account. To solve this, a flip-flop is built into each MLUT block comprised of a plurality of MLUTs, each MLUT comprising a memory and an address-data pair. With respect to the adjacent line between adjacent MLUTs, alternated adjacent line are introduced, while in the case of interconnects between non-adjacent MLUTs, dedicated distant line and, furthermore, a torus interconnect network are provided.Type: GrantFiled: March 24, 2010Date of Patent: October 9, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Tetsuo Hironaka, Kazuya Tanigawa, Hiroaki Toguchi, Naoki Hirakawa, Takashi Ishiguro, Masayuki Sato
-
Patent number: 8273191Abstract: Provided is a high-strength stainless steel material having less deterioration in mechanical strength and improved workability, particularly bending workability compared with conventional steel materials. The high-strength stainless steel material of the present invention has a specific composition, has a metal microstructure composed of two phases, that is a ferrite phase and a martensite phase, has a ?max of from 50 to 85, the ?max being represented by the following equation (1): ?max=420Wc+470WN+23WNi+7WMn?11.5WCr?11.5WSi+189??(1) wherein, Wc, WN, WNi, WMn, WCr, and WSi; represent contents (unit: mass %) of C, N, Ni, Mn, Cr, and Si relative to the total mass of the stainless steel material, respectively; and has a difference of 300 HV or less in hardness between the ferrite phase and the martensite phase.Type: GrantFiled: February 2, 2009Date of Patent: September 25, 2012Assignee: Nisshin Steel Co., Ltd.Inventors: Naoki Hirakawa, Hiroshi Fujimoto, Satoshi Suzuki
-
Patent number: 8163389Abstract: A conductive roll having at least one conductive elastic layer on the outer periphery of a core bar, the conductive elastic layer being granted conductivity by carbon black, is provided. The conductive elastic layer is prepared by reacting at least a polyol consisting essentially of a polyether-based polyol with a diisocyanate with the use of a tetravalent organotin-based compound having a tin content of 18.7% or less by weight as a catalyst. A method for producing the conductive roll is also provided.Type: GrantFiled: April 6, 2005Date of Patent: April 24, 2012Assignee: Synztec Co., LtdInventors: Naoki Hirakawa, Koichi Shizuru, Makoto Iwamura
-
Patent number: 8105653Abstract: The method for performing surface treatment of a rubber member includes impregnating a rubber member with a first surface-treatment liquid containing an isocyanate component and an organic solvent, to thereby form a first impregnation layer, and sequentially treating a surface of the rubber member, without exposure to air, with a second surface-treatment liquid for partially removing the isocyanate component present in the first impregnation layer.Type: GrantFiled: October 6, 2008Date of Patent: January 31, 2012Assignee: Synztec Co., Ltd.Inventors: Naoki Hirakawa, Asami Toki
-
Publication number: 20120007635Abstract: FPGAs and MPLDs, which are conventional programmable semiconductor devices, have had poor cost performance and did not suitably take long signal lines into account. To solve this, a flip-flop is built into each MLUT block comprised of a plurality of MLUTs, each MLUT comprising a memory and an address-data pair. With respect to the adjacent line between adjacent MLUTs, alternated adjacent line are introduced, while in the case of interconnects between non-adjacent MLUTs, dedicated distant line and, furthermore, a torus interconnect network are provided.Type: ApplicationFiled: March 24, 2010Publication date: January 12, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tetsuo Hironaka, Kazuya Tanigawa, Hiroaki Toguchi, Naoki Hirakawa, Takashi Ishiguro, Masayuki Sato
-
Patent number: 8090295Abstract: An object of the present invention is to provide a conductive rubber member which exhibits small environmental dependency and stable electrical resistance. The conductive rubber member is formed of a conductive elastic layer which has been imparted with conductivity by means of a conductivity-imparting agent. The conductive elastic layer has, at a surface portion thereof, a surface-treated layer which has been formed through impregnating the surface with a surface-treatment liquid containing an isocyanate component and an ion-conducting polymer.Type: GrantFiled: April 3, 2008Date of Patent: January 3, 2012Assignee: Synztec Co., Ltd.Inventors: Shinji Motokawa, Naoki Hirakawa
-
Patent number: 8066626Abstract: The conductive rubber member of the invention has a conductive elastic layer to which conductivity has been imparted and which serves as an outermost layer, and a surface-treated layer formed through impregnating a surface of the conductive elastic layer with a surface-treatment liquid containing at least an isocyanate component and an organic solvent, wherein the surface-treated layer is formed of an upper portion on the outermost side, and a lower portion beneath the upper portion, the upper portion has a density of the isocyanate component which is greater on the inner side than on the surface side within the upper portion, and the lower portion has a density of the isocyanate component that gradually decreases inwardly.Type: GrantFiled: September 29, 2008Date of Patent: November 29, 2011Assignee: Synztec Co., Ltd.Inventors: Naoki Hirakawa, Asami Toki
-
Patent number: 7973093Abstract: An object of the present invention is to provide a foamed rubber member which has low hardness and excellent durability. The foamed rubber member of the invention, produced through an impregnation treatment of a foamed elastic body with a treatment liquid containing an isocyanate compound and an organic solvent, the foamed elastic body being produced by foaming a base rubber, exhibits a compression set smaller than that of the foamed elastic body before undergoing the impregnation treatment, and exhibits a percent increase in stress, with respect to the stress of the foamed elastic body before undergoing the impregnation treatment, of 50% or less.Type: GrantFiled: August 7, 2009Date of Patent: July 5, 2011Assignee: Synztec Co., Ltd.Inventors: Gouki Sasagawa, Naoki Hirakawa
-
Patent number: 7875331Abstract: A conductive rubber member having at least one conductive elastic layer, wherein the conductive elastic layer, which is at least an outermost layer, in contact with an opposing member during use is a curing product of a rubber composition having a conductivity imparting agent incorporated into a rubber base material containing chloroprene rubber; and a superficial portion of the conductive elastic layer is a surface treatment layer formed by impregnating the conductive elastic layer with a surface treating solution containing at least an isocyanate component and an organic solvent.Type: GrantFiled: October 30, 2006Date of Patent: January 25, 2011Assignee: Synztec Co., Ltd.Inventors: Naoki Hirakawa, Junya Hoshi
-
Publication number: 20100282372Abstract: Provided is a high-strength stainless steel material having less deterioration in mechanical strength and improved workability, particularly bending workability compared with conventional steel materials. The high-strength stainless steel material of the present invention has a specific composition, has a metal microstructure composed of two phases, that is a ferrite phase and a martensite phase, has a ?max of from 50 to 85, the ?max being represented by the following equation (1): ?max=420Wc+470WN+23WNi+7WMn?11.5WCr?11.5WSi+189 (1) wherein, Wc, WN, WNi, WMn, WCr, and WSi; represent contents (unit: mass %) of C, N, Ni, Mn, Cr, and Si relative to the total mass of the stainless steel material, respectively; and has a difference of 300 HV or less in hardness between the ferrite phase and the martensite phase.Type: ApplicationFiled: February 2, 2009Publication date: November 11, 2010Applicant: NISSHIN STEEL CO., LTD.Inventors: Naoki Hirakawa, Hiroshi Fujimoto, Satoshi Suzuki