Patents by Inventor Takahiro Fujita

Takahiro Fujita 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: 20210246539
    Abstract: A heat treatment apparatus includes: a treatment chamber unit that is, inside a furnace shell, detachably fixed to the furnace shell; and a power supply portion, in which the treatment chamber unit includes: a treatment container in which a heat treatment is performed on a workpiece; a heat insulating material provided inside the treatment container; a heater that has a heating element located inside the treatment container and has a terminal located outside the treatment container; and a busbar that is provided on the outside of the treatment container and is electrically connected to the terminal of the heater, the power supply portion is provided outside the treatment container, and the busbar and the power supply portion are detachably connected to each other.
    Type: Application
    Filed: August 21, 2019
    Publication date: August 12, 2021
    Applicants: DOWA THERMOTECH CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro FUJITA, Masayoshi IKEYAMA, Mitsue KOGA
  • Patent number: 10883764
    Abstract: In a door structure of a heat treatment furnace performing a heat treatment of a workpiece, there are provided: a first opening member and a second opening member in which workpiece passing ports where the transferred workpiece passes are formed; and a sheet shutter, the sheet shutter is provided with a winding portion and a shutter portion, the shutter portion is disposed between the first opening member and the second opening member, the shutter portion is provided with a first sheet portion which covers the workpiece passing port of the first opening member and a second sheet portion which covers the workpiece passing port of the second opening member at a time that the shutter portion is closed, and it is configured that a gas storage portion is formed between the first opening member and the second opening member at the time that the shutter portion is closed.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 5, 2021
    Assignee: DOWA THERMOTECH CO., LTD.
    Inventors: Kazuya Sasaki, Takahiro Fujita
  • Patent number: 10870909
    Abstract: A heat treatment facility performing a heat treatment on a workpiece, the heat treatment facility includes: a treatment container in which the workpiece is housed; a heater which is provided in the treatment container and heats the workpiece by radiation heat at least from below the workpiece; and a plurality of support posts which are provided in the treatment container and support the workpiece.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: December 22, 2020
    Assignees: DOWA THERMOTECH CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Fujita, Masayoshi Ikeyama
  • Patent number: 10823234
    Abstract: An annular member stopping structure for a friction engaging device includes an end plate 212, a plurality of projecting sections 218 projecting in a radial direction at intervals in a circumferential direction on the end plate 212, a drum 112 having hook parts 220 configured to engage with the projecting sections 218, the drum 112 being non-rotatable relative to the end plate 212, an annular groove 214 provided in the drum 112, and a C-shaped snap ring 216 configured to fit in the annular groove 214. A circumferential direction abutting section 226 freely abutting with circumferential direction end 216a of the snap ring 216 is provided in the end plate 212.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: November 3, 2020
    Assignees: HONDA MOTOR CO., LTD., NSK-WARNER K.K.
    Inventors: Takahiro Fujita, Soichi Sugino, Satoshi Kato, Hidetoshi Nagamine, Tomoyuki Kirino, Moriya Suzuki
  • Publication number: 20190127836
    Abstract: A heat treatment facility performing a heat treatment on a workpiece, the heat treatment facility includes: a treatment container in which the workpiece is housed; a heater which is provided in the treatment container and heats the workpiece by radiation heat at least from below the workpiece; and a plurality of support posts which are provided in the treatment container and support the workpiece.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Applicants: DOWA THERMOTECH CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro FUJITA, Masayoshi IKEYAMA
  • Publication number: 20190024979
    Abstract: In a door structure of a heat treatment furnace performing a heat treatment of a workpiece, there are provided: a first opening member and a second opening member in which workpiece passing ports where the transferred workpiece passes are formed; and a sheet shutter, the sheet shutter is provided with a winding portion and a shutter portion, the shutter portion is disposed between the first opening member and the second opening member, the shutter portion is provided with a first sheet portion which covers the workpiece passing port of the first opening member and a second sheet portion which covers the workpiece passing port of the second opening member at a time that the shutter portion is closed, and it is configured that a gas storage portion is formed between the first opening member and the second opening member at the time that the shutter portion is closed.
    Type: Application
    Filed: March 21, 2017
    Publication date: January 24, 2019
    Applicant: DOWA THERMOTECH CO., LTD.
    Inventors: Kazuya SASAKI, Takahiro FUJITA
  • Publication number: 20180298955
    Abstract: An annular member stopping structure for a friction engaging device includes an end plate 212, a plurality of projecting sections 218 projecting in a radial direction at intervals in a circumferential direction on the end plate 212, a drum 112 having hook parts 220 configured to engage with the projecting sections 218, the drum 112 being non-rotatable relative to the end plate 212, an annular groove 214 provided in the drum 112, and a C-shaped snap ring 216 configured to fit in the annular groove 214. A circumferential direction abutting section 226 freely abutting with circumferential direction end 216a of the snap ring 216 is provided in the end plate 212.
    Type: Application
    Filed: April 3, 2018
    Publication date: October 18, 2018
    Applicants: HONDA MOTOR CO., LTD., NSK-Warner K.K.
    Inventors: Takahiro Fujita, Soichi Sugino, Satoshi Kato, Hidetoshi Nagamine, Tomoyuki Kirino, Moriya Suzuki
  • Publication number: 20160099845
    Abstract: A user interface includes a graphical topological representation of an information system. Information is collected regarding connections between switches, storage nodes and computer nodes in the information system. Any sub networks in the system are identified based on the collected information and classified as LANs or SANs. Connections between the various components are determined, and a layout of any identified LANs, computer nodes, SANs, and storage nodes is established for generating the topological representation in the user interface. The graphical topological representation of the information system is displayed in the user interface with the LAN icons, computer node icons, SAN icons and storage node icons laid out in a matrix-like arrangement of columns and rows, such that for LANs, computer nodes, SANs and/or storage nodes that are connected to each other, the corresponding icons are located on or near a same row in the graphical topological representation.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 7, 2016
    Inventors: Atsushi MURASE, Tetsuya MASUISHI, Takahiro FUJITA
  • Patent number: 9225610
    Abstract: A user interface includes a graphical topological representation of an information system. Information is collected regarding connections between switches, storage nodes and computer nodes in the information system. Any sub networks in the system are identified based on the collected information and classified as LANs or SANs. Connections between the various components are determined, and a layout of any identified LANs, computer nodes, SANs, and storage nodes is established for generating the topological representation in the user interface. The graphical topological representation of the information system is displayed in the user interface with the LAN icons, computer node icons, SAN icons and storage node icons laid out in a matrix-like arrangement of columns and rows, such that for LANs, computer nodes, SANs and/or storage nodes that are connected to each other, the corresponding icons are located on or near a same row in the graphical topological representation.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: December 29, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Murase, Tetsuya Masuishi, Takahiro Fujita
  • Publication number: 20150188752
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Application
    Filed: March 11, 2015
    Publication date: July 2, 2015
    Inventors: Yutaka KUDO, Tetsuya MASUISHI, Takahiro FUJITA, Tomohiro MORIMURA
  • Patent number: 9000601
    Abstract: The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other via the conductor member. This configuration makes it possible to suppress the occurrence of the resonant voltage due to the junction capacity and the parasitic inductance of each semiconductor switching element.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Hitachi Power Semiconductor Device, Ltd.
    Inventors: Katsunori Azuma, Kentaro Yasuda, Takahiro Fujita, Katsuaki Saito, Yoshihiko Koike, Michiaki Hiyoshi
  • Patent number: 9003230
    Abstract: A technique determines which configuration change(s) caused an application invocation failure of a computer application without the need for a knowledge database. To determine which configuration change is the most likely cause, the cause analysis program checks other computers that have experienced the same configuration changes. The cause analysis program checks and counts the application invocation results before and after each configuration change is done. If the same configuration changes are found in the other computers, the program checks whether each configuration change caused or cured the same problem in that computer. The program counts the similar cases for all of the computers. Subsequently, the program calculates the ratio of those instances involving a change from success to failure and the ratio of those instances involving a change from failure to success out of all instances for each configuration change.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: April 7, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Kudo, Tetsuya Masuishi, Takahiro Fujita, Yoshitsugu Ono
  • Patent number: 8990141
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: March 24, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Kudo, Tetsuya Masuishi, Takahiro Fujita, Tomohiro Morimura
  • Publication number: 20140229419
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Application
    Filed: April 16, 2014
    Publication date: August 14, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yutaka KUDO, Tetsuya MASUISHI, Takahiro FUJITA, Tomohiro MORIMURA
  • Patent number: 8732111
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 20, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Kudo, Takahiro Fujita, Tetsuya Masuishi, Tomohiro Morimura
  • Publication number: 20140082423
    Abstract: A technique determines which configuration change(s) caused an application invocation failure of a computer application without the need for a knowledge database. To determine which configuration change is the most likely cause, the cause analysis program checks other computers that have experienced the same configuration changes. The cause analysis program checks and counts the application invocation results before and after each configuration change is done. If the same configuration changes are found in the other computers, the program checks whether each configuration change caused or cured the same problem in that computer. The program counts the similar cases for all of the computers. Subsequently, the program calculates the ratio of those instances involving a change from success to failure and the ratio of those instances involving a change from failure to success out of all instances for each configuration change.
    Type: Application
    Filed: November 21, 2013
    Publication date: March 20, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yutaka KUDO, Tetsuya MASUISHI, Takahiro FUJITA, Yoshitsugu ONO
  • Publication number: 20140025621
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yutaka KUDO, Tetsuya MASUISHI, Takahiro FUJITA, Tomohiro MORIMURA
  • Patent number: 8601319
    Abstract: A technique determines which configuration change(s) caused an application invocation failure of a computer application without the need for a knowledge database. To determine which configuration change is the most likely cause, the cause analysis program checks other computers that have experienced the same configuration changes. The cause analysis program checks and counts the application invocation results before and after each configuration change is done. If the same configuration changes are found in the other computers, the program checks whether each configuration change caused or cured the same problem in that computer. The program counts the similar cases for all of the computers. Subsequently, the program calculates the ratio of those instances involving a change from success to failure and the ratio of those instances involving a change from failure to success out of all instances for each configuration change.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: December 3, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Kudo, Tetsuya Masuishi, Takahiro Fujita, Yoshitsugu Ono
  • Patent number: 8583581
    Abstract: A root cause analysis engine uses event survival times and gradual deletion of events to improve analysis accuracy and reduce the number of required calculations. Certainty factors of relevant rules are recalculated every time notification of an event is received. The calculation results are held in a rule memory in the analysis engine. Each event has a survival time, and when the time has expired, that event is deleted from the rule memory. Events held in the rule memory can be deleted without affecting other events held in the rule memory. The analysis engine can then re-calculate the certainty factor of each rule by only performing the re-calculation with respect to affected rules that are related with the deleted event. The calculation cost can be reduced because analysis engine processes events incrementally or decrementally.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: November 12, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Kudo, Tetsuya Masuishi, Takahiro Fujita, Tomohiro Morimura
  • Publication number: 20130001805
    Abstract: The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other via the conductor member. This configuration makes it possible to suppress the occurrence of the resonant voltage due to the junction capacity and the parasitic inductance of each semiconductor switching element.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 3, 2013
    Inventors: Katsunori AZUMA, Kentaro Yasuda, Takahiro Fujita, Katsuaki Saito, Yoshihiko Koike, Michiaki Hiyoshi