Patents by Inventor Takeshi Yokota

Takeshi Yokota 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: 20150059430
    Abstract: An inertial force sensor includes a fixed part, a beam connected to the fixed part, a plummet connected to another end of the beam and being displaceable due to inertial force to cause the beam to deform, a conductive part provided at the plummet, a strain-sensitive resistor provided at the beam for detecting a deformation of the first beam, first and second fault diagnostic electrodes provided at the fixed part, a first fault diagnostic wiring for connecting the first fault diagnostic electrode to the conductive part through the beam, and a second fault diagnostic wiring for connecting the second fault diagnostic electrode to the conductive part through the beam. The inertial force sensor does not continue to output an erroneous output signal when a crack occurs in the plummet, thus having high reliability.
    Type: Application
    Filed: April 18, 2013
    Publication date: March 5, 2015
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takashi Imanaka, Hiroyuki Aizawa, Takeshi Yokota
  • Publication number: 20150034219
    Abstract: A steel sheet has a microstructure including ferrite phase: 40% to 60%, bainite phase: 10% to 30%, tempered martensite phase: 20% to 40%, and retained austenite phase: 5% to 20% by volume fraction, and satisfying a condition that a ratio of tempered martensite phase having major axis length ?5 ?m to a total volume fraction of the tempered martensite phase is 80% to 100%.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 5, 2015
    Inventors: Hidetaka Kawabe, Takeshi Yokota, Reiko Sugihara, Shigeyuki Aizawa, Kazuki Nakazato
  • Publication number: 20150027594
    Abstract: A thin steel sheet having sheet thickness ?1.6 mm, but tensile strength ?780 MPa and Young's modulus ?240 GPa in transverse direction is provided, where the steel sheet has composition including, in mass %, C: 0.06-0.12%, Si: 0.5-1.5%, Mn: 1.0-3.0%, P: 0.05% or less, S: 0.01% or less, Al: 0.5% or less, N: 0.01% or less, Ti: 0.02-0.20%, and the balance being Fe and incidental impurities, where the composition satisfies relations of Formula (1) and (2), and microstructure such that ferrite phase has area ratio ?60% and martensite phase has area ratio of 15-35%, ferrite and martensite phases are 95% or more in total, average grain size of ferrite is ?4.0 ?m and that of martensite is ?1.5 ?m, 0.05?[% C]?(12/47.9)×[% Ti*]?0.10 ??(1), where Ti*=[% Ti]?(47.9/14)×[% N]?(47.9/32.1)×[% S]??(2).
    Type: Application
    Filed: November 7, 2012
    Publication date: January 29, 2015
    Inventors: Kenji Kawamura, Takeshi Yokota
  • Publication number: 20140332123
    Abstract: Provided are a high-strength steel sheet and a method for producing the same. A high-strength steel sheet has a composition containing 0.10% to 0.18% C, more than 0.5% to 1.5% Si, 0.5% to 1.5% Mn, 0.05% or less P, 0.005% or less S, and 0.05% or less Al on a mass basis, the remainder being Fe and inevitable impurities and also has a microstructure containing ferrite and pearlite. The volume fraction of the ferrite is 70% to 97%. The volume fraction of the pearlite is 3% or more. The volume fraction of cementite present at grain boundaries of the ferrite is 2% or less. The sum of the volume fractions of phases other than the ferrite, the pearlite, and the cementite is less than 3%. The average grain size of the ferrite is 7 ?m or less.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 13, 2014
    Applicant: JFE STEELCORPORATION
    Inventors: Kouichi Nakagawa, Kenji Kawamura, Takeshi Yokota, Kazuhiro Seto
  • Patent number: 8815025
    Abstract: A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: August 26, 2014
    Assignees: JFE Steel Corporation, ThyssenKrupp Steel AG
    Inventors: Takeshi Yokota, Akio Kobayashi, Kazuhiro Seto, Yoshihiro Hosoya, Thomas Heller, Brigitte Hammer, Rolf Bode, Günter Stich
  • Patent number: 8646301
    Abstract: A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: February 11, 2014
    Assignee: JFE Steel Corporation
    Inventors: Takeshi Yokota, Kazuhiro Seto, Satoshi Ueoka, Nobuo Nishiura, Yoichi Tominaga
  • Patent number: 8628630
    Abstract: A hot-pressed steel sheet member has a composition containing, by mass, C: 0.09% to 0.38%, Si: 0.05% to 2.0%, Mn: 0.5% to 3.0%, P: 0.05% or less, S: 0.05% or less, Al: 0.005% to 0.1%, N: 0.01% or less, Sb: 0.002% to 0.03%, and the balance being Fe and inevitable impurities, and having a tensile strength TS of 980 to 2,130 MPa.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: January 14, 2014
    Assignee: JFE Steel Corporation
    Inventors: Akio Kobayashi, Yoshimasa Funakawa, Kazuhiro Seto, Nobuyuki Kageyama, Tetsuo Yamamoto, Toru Hoshi, Takeshi Yokota
  • Patent number: 8577714
    Abstract: A business information management system includes a data connection relationship information storage section storing connection relationships of data items forming a business information database, a data connection accuracy information storage section that stores data connection accuracy between data item pairs having a connection relationship, and a data change section that changes data in the business information database by inputting data thereto. A change affected data extraction section extracts change affected data items by tracing first data items having a connection relationship with an originally changed data item and second data items having a connection relationship with the first data items until there is no connection relationship, a change effect probability calculation section calculates change effect probability of the change affected data based on data connection accuracy, and a change affected data display section displays the change effect probability on a display unit.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: November 5, 2013
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Takeshi Yokota, Kenji Araki, Masanori Takamoto, Masatoshi Takada, Tsuyoshi Niino
  • Publication number: 20130280551
    Abstract: A high strength galvanized steel sheet having tensile strength of 590 MPa or more which is excellent in fatigue property in punching work, and a manufacturing method thereof are provided. The microstructure includes a ferrite phase having an average grain diameter of 15 ?m or less and an area fraction of 60% or more and a martensite phase having an area fraction of 5 to 40%, and an amount of one or more kinds of oxide selected from a group consisting of Fe, Si, Mn, Al, P, Nb, and Ti generated on a surface layer portion of the steel sheet within 100 ?m in a steel-sheet-side depth direction from a surface of a base steel sheet directly below a galvanized layer is less than 0.060 g/m2 per one-side surface of the steel sheet.
    Type: Application
    Filed: September 28, 2011
    Publication date: October 24, 2013
    Applicant: JFE Steel Corporation
    Inventors: Nobusuke Kariya, Hayato Saito, Takeshi Yokota, Yusuke Fushiwaki
  • Patent number: 8566065
    Abstract: An apparatus for supporting arrangement of operation areas layout includes: a storage unit that stores therein data on a position, a shape, and a use period of each operation area which has already been arranged in a prescribed site; a display control unit that references the data stored in the storage unit and makes a display unit display a top view illustrating arrangement of the operation areas at a given point of time on a temporal axis; and an operation areas layout arrangement processing unit that receives an input of a data on a position, a shape, and a use period of an operation area to be added into the prescribed site, references the data stored in the storage unit, and, if the received and added operation area is not determined to interfere with other already-arranged operation area, stores the data on the added operation area in the storage unit.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: October 22, 2013
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Yoshibumi Fukuda, Takeshi Yokota, Hisanori Nonaka, Norito Watanabe, Toshiyuki Miyake, Kenji Akagi, Kensuke Morita
  • Publication number: 20130032253
    Abstract: A galvanized steel sheet having excellent formability is provided including steel having a composition which contains, on a percent by mass basis, 0.03% to 0.15% of C, less than 0.5% of Si, 1.0% to 2.5% of Mn, 0.05% or less of P, 0.01% or less of S, 0.05% or less of Al, 0.0050% or less of N, 0.05% to 0.8% of Cr, 0.01% to 0.1% of V, and the balance being Fe and inevitable impurities; and a zinc plating film on a surface of a steel sheet, and wherein a microstructure of the steel contains ferrite having an average grain diameter of 15 ?m or less and 5% to 40% of martensite in an area ratio, and the ratio of martensite having an aspect ratio of less than 3.0 to all the martensite is more than 95% in area ratio.
    Type: Application
    Filed: April 15, 2011
    Publication date: February 7, 2013
    Applicant: JFE STEEL CORPORATION
    Inventors: Nobusuke Kariya, Hayato Saito, Takeshi Yokota
  • Patent number: 8326664
    Abstract: A carry-in ready period calculation part calculates a candidate of a carry-in ready period which is a period during which a carry-in operation can be conducted and outputs the candidate in an output part so as to make entire construction works efficient. The calculation is performed based on a site arrival time schedule which is a time schedule showing when a carry-in target equipment arrives at a site, a temporary placement time schedule which is a time schedule showing when the equipment arrived is temporarily placed, and a construction time schedule of a building in which the equipment is carried.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: December 4, 2012
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Yoshibumi Fukuda, Takeshi Yokota, Kenichirou Yamane, Kenji Akagi, Kensuke Morita
  • Publication number: 20120221324
    Abstract: In a text document processing apparatus, there is provided standard knowledge network data composed of networked phrases having strong mutual relation to each other, the phrases being selected from a knowledge field including contents of a text document to be examined. In addition, there is provided a document knowledge preparing function that prepares knowledge network data of the document to be examined, the knowledge network data being composed of networked phrases having strong mutual relation to each other, the phrases being selected from the text document. Further, a processing unit that checks a specified word constituting the knowledge network data of the document to be examined and a standard knowledge network data, and in a case when information of phrases which are networked to the specified word are different from each other, outputs difference information including information of the specified word.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 30, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Kimiyoshi Machii, Kaoru Kawabata, Takeshi Yokota, Yoshiyuki Kobayashi, Masakazu Fujio
  • Publication number: 20120216925
    Abstract: A hot-pressed steel sheet member has a composition containing, by mass, C: 0.09% to 0.38%, Si: 0.05% to 2.0%, Mn: 0.5% to 3.0%, P: 0.05% or less, S: 0.05% or less, Al: 0.005% to 0.1%, N: 0.01% or less, Sb: 0.002% to 0.03%, and the balance being Fe and inevitable impurities, and having a tensile strength TS of 980 to 2,130 MPa.
    Type: Application
    Filed: August 19, 2010
    Publication date: August 30, 2012
    Applicant: JFE Steel Corporation
    Inventors: Akio Kobayashi, Yoshimasa Funakawa, Kazuhiro Seto, Nobuyuki Kageyama, Tetsuo Yamamoto, Toru Hoshi, Takeshi Yokota
  • Patent number: 8188466
    Abstract: A resistance variable element is provided, which is capable of performing bipolar operation by a specified mechanism and usable as a memory. The resistance variable element has a laminated structure including an electrode, another electrode, an oxide layer between the electrodes, and an oxide layer in contact with the oxide layer between the oxide layer and the electrode. The oxide layer is switchable from the low-resistance state to the high-resistance state by donating oxygen ions to the oxide layer, and from the high-resistance state to the low-resistance state by accepting oxygen ions from the oxide layer. The oxide layer is switchable from the low-resistance state to the high-resistance state by accepting oxygen ions from the oxide layer, and from the high-resistance state to the low-resistance state by donating oxygen ions to the oxide layer.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: May 29, 2012
    Assignees: Fujitsu Limited, National University Corporation Nagoya Institute of Technology
    Inventors: Hiroyasu Kawano, Keiji Shono, Manabu Gomi, Takeshi Yokota
  • Publication number: 20120107633
    Abstract: A high-strength steel sheet includes a composition containing, in mass percent, 0.08% to 0.20% of carbon, 0.2% to 1.0% of silicon, 0.5% to 2.5% of manganese, 0.04% or less of phosphorus, 0.005% or less of sulfur, 0.05% or less of aluminum, 0.07% to 0.20% of titanium, and 0.20% to 0.80% of vanadium, the balance being iron and incidental impurities.
    Type: Application
    Filed: June 29, 2010
    Publication date: May 3, 2012
    Applicant: JFE STEEL CORPORATION
    Inventors: Koichi Nakagawa, Takeshi Yokota, Kazuhiro Seto, Satoshi Kinoshiro, Yuji Tanaka, Katsumi Yamada, Tetsuya Mega, Katsumi Nakajima
  • Publication number: 20120005103
    Abstract: In a construction simulation apparatus: a 3-D already-existing model, installation progress data, and a 3-D new-construction model are recorded in databases; a match determination unit determines similarity in one or more installation positions of one or more of pieces of equipment and piping components between the 3-D already-existing model and the 3-D new-construction model; and a progress selection unit selects, as portions of installation schedule data corresponding to the 3-D new-construction model, portions of the installation progress data corresponding to matching portions of the 3-D already-existing model, on the basis of data indicating a correspondence relationship between the 3-D already-existing model and the installation progress data, where the matching portions of the 3-D already-existing model are extracted by the match determination unit and respectively match the portions of the 3-D new-construction model.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Inventors: Hiroshi Seki, Takeshi Yokota
  • Publication number: 20110301995
    Abstract: A carry-in ready period calculation part calculates a candidate of a carry-in ready period which is a period during which a carry-in operation can be conducted and outputs the candidate in an output part so as to make entire construction works efficient. The calculation is performed based on a site arrival time schedule which is a time schedule showing when a carry-in target equipment arrives at a site, a temporary placement time schedule which is a time schedule showing when the equipment arrived is temporarily placed, and a construction time schedule of a building in which the equipment is carried.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 8, 2011
    Inventors: Yoshibumi Fukuda, Takeshi Yokota, Kenichirou Yamane, Kenji Akagi, Kensuke Morita
  • Publication number: 20110290383
    Abstract: A high strength cold rolled steel sheet excellent in weldability and has a TS of 440 MPa or more includes a composition including C: 0.0005 to 0.005%, Si: 0.1 to 1.0%, Mn: 1 to 2.5%, P: 0.01 to 0.2%, S: 0.015% or less, sol. Al: 0.05% or less, N: 0.007% or less, Ti: 0.01 to 0.1%, B: 0.0005 to 0.0020%, Cu: 0.05 to 0.5%, and Ni: 0.03 to 0.5% by mass with the balance Fe and incidental impurities; and a microstructure constituted by a ferrite single phase.
    Type: Application
    Filed: July 24, 2009
    Publication date: December 1, 2011
    Applicant: JFE STEEL CORPORATION
    Inventors: Hiromi Yoshida, Hayato Saito, Takeshi Yokota, Yasushi Tanaka
  • Publication number: 20110271733
    Abstract: A method for manufacturing a high strength hot rolled steel sheet includes heating a slab to a temperature in the range of 1150 to 1300° C.; hot rolling the slab with a finishing rolling temperature being in the range of 800 to 1000° C.; cooling the steel sheet at a mean cooling rate of 30° C./s or higher to a cooling termination temperature in the range of 525 to 625° C.; suspending cooling for a time period in the range of 3 to 10 seconds; cooling the steel sheet in such a manner that cooling of the steel sheet is nucleate boiling; and coiling the steel sheet at a temperature in the range of 400 to 550° C.
    Type: Application
    Filed: August 20, 2008
    Publication date: November 10, 2011
    Applicant: JFE STEEL CORPORATION
    Inventors: Takeshi Yokota, Kazuhiro Seto, Satoshi Ueoka, Nobuo Nishiura, Yoichi Tominaga