Patents by Inventor Yoshiaki Fukunaga
Yoshiaki Fukunaga 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: 11370053Abstract: An aspect of the present disclosure provides a welding torch that includes a torch head and a torch body removably connected to the torch head. The torch head includes first and second torch-head flow paths for flowing cooling water, first and second inlets/outlets communicating with the first and second torch-head flow paths, respectively, and a movable part movable in an axial direction of the torch head. The torch body includes a torch-body flow path for flowing cooling water, and first and second connection ports communicating with opposite ends of the torch-body flow path, respectively. The first and second inlets/outlets communicate with the first and second connection ports, respectively, when the torch head and the torch body are connected to each other. The first and second inlets/outlets are closed with the movable part when the torch head and the torch body are separated.Type: GrantFiled: May 10, 2018Date of Patent: June 28, 2022Assignee: DAIHEN CorporationInventors: Tetsushi Minamoto, Yukiya Morita, Yoshiaki Fukunaga
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Publication number: 20200094344Abstract: An aspect of the present disclosure provides a welding torch that includes a torch head and a torch body removably connected to the torch head. The torch head includes first and second torch-head flow paths for flowing cooling water, first and second inlets/outlets communicating with the first and second torch-head flow paths, respectively, and a movable part movable in an axial direction of the torch head. The torch body includes a torch-body flow path for flowing cooling water, and first and second connection ports communicating with opposite ends of the torch-body flow path, respectively. The first and second inlets/outlets communicate with the first and second connection ports, respectively, when the torch head and the torch body are connected to each other. The first and second inlets/outlets are closed with the movable part when the torch head and the torch body are separated.Type: ApplicationFiled: May 10, 2018Publication date: March 26, 2020Inventors: Tetsushi MINAMOTO, Yukiya MORITA, Yoshiaki FUKUNAGA
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Patent number: 9109449Abstract: A turbine rotor has suitable strength and toughness without causing soaring manufacturing costs and prolonged manufacturing time. The turbine rotor is constructed by welding a rotor member for high temperature made of high Cr steel to a rotor member for low temperature made of low Cr steel. The high temperature rotor member is formed from high Cr steel of which the nitrogen content is 0.02% or higher by mass %. A filler material welds the high temperature rotor member and the low temperature rotor member together, and is a 9% Cr-based filler material of which the nitrogen content is 0.025% or lower by mass %.Type: GrantFiled: July 15, 2009Date of Patent: August 18, 2015Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Takashi Shige, Shin Nishimoto, Kimmitsu Maruyama, Kenji Kawasaki, Yoshiaki Fukunaga, Takashi Nakano
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Patent number: 8983498Abstract: In a method for controlling a communication system, the reception device reports a first size of a free space of a buffer in the reception device to the transmission device. The transmission device controls transmission of first data with a first priority to the reception device based on the first size. The transmission device controls transmission of second data with a second priority lower than the first priority to the reception device based on a threshold less than the first size.Type: GrantFiled: March 5, 2013Date of Patent: March 17, 2015Assignee: Fujitsu LimitedInventors: Takahiro Fujii, Satoru Hirasawa, Yoshiaki Fukunaga, Takayuki Ohtsuka, Nobuaki Kitazumi, Tomohiro Sakai, Takeshi Masubuchi
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Patent number: 8897441Abstract: When being triggered by a call setting request that has been made, dummy information that is different from information to be transmitted and is information used for creating a path on which encrypted communication is to be performed is generated. The path on which the encrypted communication is to be performed is established by using the generated dummy information. A responding process of responding to the call setting request is performed after the path on which the encrypted communication is to be performed has been established. Thus, in the case where information that is obtained after the responding process of responding to the call setting request is encrypted and transmitted, it is possible to transmit the information while maintaining the real-time characteristics of the information to be transmitted.Type: GrantFiled: May 17, 2010Date of Patent: November 25, 2014Assignee: Fujitsu LimitedInventors: Toshifumi Inoue, Isamu Fukuda, Kenji Fukuda, Kiyohisa Hoshino, Nobuyuki Fukuda, Yoshiaki Fukunaga, Satoru Hirasawa
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Publication number: 20130281098Abstract: In a method for controlling a communication system, the reception device reports a first size of a free space of a buffer in the reception device to the transmission device. The transmission device controls transmission of first data with a first priority to the reception device based on the first size. The transmission device controls transmission of second data with a second priority lower than the first priority to the reception device based on a threshold less than the first size.Type: ApplicationFiled: March 5, 2013Publication date: October 24, 2013Applicant: Fujitsu LimitedInventors: Takahiro FUJII, Satoru Hirasawa, Yoshiaki Fukunaga, Takayuki Ohtsuka, Nobuaki Kitazumi, Tomohiro Sakai, Takeshi Masubuchi
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Patent number: 8159997Abstract: A wireless communication system includes a multi service supplying unit which transmits the same data to a plurality of user equipment and a quality evaluation result collecting unit which collects quality evaluation results of a multi service from the plurality of user equipment. The wireless communication system includes a resource controlling unit which controls shared wireless communication resources used for the multi service according to the quality evaluation results.Type: GrantFiled: March 19, 2009Date of Patent: April 17, 2012Assignee: Fujitsu LimitedInventors: Yoshiaki Fukunaga, Hajime Hasegawa
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Publication number: 20110228935Abstract: A communication apparatus includes: connection-source terminating units, each constituting an independent communication path with a corresponding one of connection-destination terminating units; and an establishing unit that establishes a single piece of encryption information with a connection-destination apparatus having the connection-destination terminating units, the encryption information being used for encryption processing for communication performed between the connection-source terminating units and the corresponding connection-destination terminating units and being common to the communication paths.Type: ApplicationFiled: March 11, 2011Publication date: September 22, 2011Applicant: FUJITSU LIMITEDInventor: Yoshiaki Fukunaga
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Publication number: 20110206525Abstract: There are provided a turbine rotor having suitable strength and toughness without causing soaring manufacturing costs and prolonged manufacturing time, and a manufacturing method of the turbine rotor. In a turbine rotor constructed by welding a rotor member for high temperature made of high Cr steel, and a rotor member for low temperature made of low Cr steel, the high temperature rotor member is formed from high Cr steel of which the nitrogen content is 0.02% or higher by mass %, and a filler material which welds the high temperature rotor member and the low temperature rotor member together is a 9% Cr-based filler material of which the nitrogen content is 0.025% or lower by mass %.Type: ApplicationFiled: July 15, 2009Publication date: August 25, 2011Inventors: Takashi Shige, Shin Nishimoto, Kimmitsu Maruyama, Kenji Kawasaki, Yoshiaki Fukunaga, Takashi Nakano
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Publication number: 20100303233Abstract: When being triggered by a call setting request that has been made, dummy information that is different from information to be transmitted and is information used for creating a path on which encrypted communication is to be performed is generated. The path on which the encrypted communication is to be performed is established by using the generated dummy information. A responding process of responding to the call setting request is performed after the path on which the encrypted communication is to be performed has been established. Thus, in the case where information that is obtained after the responding process of responding to the call setting request is encrypted and transmitted, it is possible to transmit the information while maintaining the real-time characteristics of the information to be transmitted.Type: ApplicationFiled: May 17, 2010Publication date: December 2, 2010Applicant: FUJITSU LIMITEDInventors: Toshifumi INOUE, Isamu Fukuda, Kenji Fukuda, Kiyohisa Hoshino, Nobuyuki Fukuda, Yoshiaki Fukunaga, Satoru Hirasawa
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Publication number: 20100296395Abstract: A first apparatus includes a sending unit which attaches a sequence number which is numbered for each priority of QoS set in a first packet, the sequence number is numbered for each priority of QoS set in the first packet, and sends the first packet with the sequence number. A second apparatus includes a storage unit which stores, for each priority, a history of sequence numbers attached to packets received, a determining unit which receives the first packet from the first apparatus, identifies the sequence number of the first packet, and determines whether the first packet has been previously received by comparing the identified sequence number with the history of sequence numbers according to the priority of QoS set in the first packet stored in the storage unit, and a unit which discards, when the determining unit determines the first packet has been previously received, the first packet.Type: ApplicationFiled: May 20, 2010Publication date: November 25, 2010Applicant: FUJITSU LIMITEDInventors: Isamu Fukuda, Katsuhiko Negoto, Toshifumi Inoue, Kiyohisa Hoshino, Nobuyuki Fukuda, Yoshiaki Fukunaga, Satoru Hirasawa, Kenji Fukuda
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Publication number: 20090245155Abstract: A wireless communication system includes a multi service supplying unit which transmits the same data to a plurality of user equipment and a quality evaluation result collecting unit which collects quality evaluation results of a multi service from the plurality of user equipment. The wireless communication system includes a resource controlling unit which controls shared wireless communication resources used for the multi service according to the quality evaluation results.Type: ApplicationFiled: March 19, 2009Publication date: October 1, 2009Applicant: FUJITSU LIMITEDInventors: Yoshiaki Fukunaga, Hajime Hasegawa
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Publication number: 20050246893Abstract: A turbine rotor repair method capable of forming a repair part by applying a deposit welding to a rotor material, the deposit welding being a thin deposit welding with a high deposition rate, wherein the repair part is formed by stacking beads by the thin deposit welding, and the thin deposit welding with the high deposition rate is performed by a submerged arc welding using a conductive flux.Type: ApplicationFiled: November 25, 2003Publication date: November 10, 2005Inventors: Yoshiaki Fukunaga, Takashi Shige, Masahiko Yamashita, Hidenori Kanki