Patents by Inventor Masahiko Yamashita
Masahiko Yamashita 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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Publication number: 20240142346Abstract: An AE signal is acquired from an AE sensor disposed on a fixed part of the rotating machine, and the presence or absence of rubbing in the rotating machine is determined, based on the AE signal. As a result, if the rubbing is determined to be present, a rubbing suppression operating condition imposed on control of the rotating machine is decided to suppress the rubbing.Type: ApplicationFiled: March 2, 2022Publication date: May 2, 2024Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Kumagai, Ryo Kawabata, Shuichi Ishizawa, Masahiko Yamashita, Yoshinori Tanaka, Shinnosuke Haga
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Publication number: 20240097219Abstract: A battery system comprises a plurality of battery modules, each of the battery modules includes an assembled battery configured to include a plurality of battery cells connected in series, a monitoring unit configured to monitor the assembled battery, and an external member configured to be electrically connected to the monitoring unit, and the monitoring unit of each of the battery modules has a generation unit configured to generate, based on an electric signal input from the external member, an identification information item on the corresponding one of the battery modules, the identification information items of the respective battery modules being different from one another.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Applicant: DENSO CORPORATIONInventors: Naoto YAMASHITA, Masahiko Ito, Masakazu Kouda, Hisanaga Onishi
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Method for evaluating crack in metal member and method for evaluating fatigue damage in metal member
Patent number: 11898995Abstract: A method for evaluating a crack in a metal member comprises a first removal step (S10) and a second removal step (S20). In the first removal step (S10), a step for electrolyzing a metal member having an oxide scale formed on a surface thereof, a step for acquiring an image of the oxide scale as a first image, and a step for determining whether or not a scale crack has occurred are repeated until occurrence of a scale crack is determined. In the second removal step (S20), a step for electrolyzing the metal member having the scale crack, a second image acquisition step for acquiring an image of the oxide scale as a second image, and a second determination step for determining whether or not the scale crack has disappeared are repeated until disappearance of the oxide scale is determined.Type: GrantFiled: July 2, 2020Date of Patent: February 13, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hiroaki Fukushima, Yuichi Hirakawa, Hiroaki Yoshida, Masahiko Yamashita, Takeo Tokumoto -
METHOD FOR EVALUATING CRACK IN METAL MEMBER AND METHOD FOR EVALUATING FATIGUE DAMAGE IN METAL MEMBER
Publication number: 20220349790Abstract: A method for evaluating a crack in a metal member comprises a first removal step (S10) and a second removal step (S20). In the first removal step (S10), a step for electrolyzing a metal member having an oxide scale formed on a surface thereof, a step for acquiring an image of the oxide scale as a first image, and a step for determining whether or not a scale crack has occurred are repeated until occurrence of a scale crack is determined. In the second removal step (S20), a step for electrolyzing the metal member having the scale crack, a second image acquisition step for acquiring an image of the oxide scale as a second image, and a second determination step for determining whether or not the scale crack has disappeared are repeated until disappearance of the oxide scale is determined.Type: ApplicationFiled: July 2, 2020Publication date: November 3, 2022Inventors: Hiroaki FUKUSHIMA, Yuichi HIRAKAWA, Hiroaki YOSHIDA, Masahiko YAMASHITA, Takeo TOKUMOTO -
Patent number: 8816809Abstract: A reactor is disclosed. The reactor is comprised of a housing, a solenoid coil, a center columnar member, and a core. The center columnar member provides first surfaces contacting with sandwich portions of the housing, and the core is comprised of resin including magnetic powder. The coil and the center columnar member are fixed in the core. A surface roughness (Rz2) of a second surface which contacts to the core is larger than a surface roughness (Rz1) of the first surfaces. The center columnar member further provides a basis surface of which roughness (Rz3) is smaller than the Rz2 and larger than the Rz1.Type: GrantFiled: July 27, 2012Date of Patent: August 26, 2014Assignees: Denso Corporation, Nec Tokin CorporationInventors: Kazuhiro Kosaka, Ryota Tanabe, Souichi Yoshinaga, Masahiko Yamashita, Seigo Satou, Mitsutoshi Kameda, Tsugio Takeda
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Publication number: 20130027163Abstract: A reactor is disclosed. The reactor is comprised of a housing, a solenoid coil, a center columnar member, and a core. The center columnar member provides first surfaces contacting with sandwich portions of the housing, and the core is comprised of resin including magnetic powder. The coil and the center columnar member are fixed in the core. A surface roughness (Rz2) of a second surface which contacts to the core is larger than a surface roughness (Rz1) of the first surfaces. The center columnar member further provides a basis surface of which roughness (Rz3) is smaller than the Rz2 and larger than the Rz1.Type: ApplicationFiled: July 27, 2012Publication date: January 31, 2013Applicants: NEC TOKIN CORPORATION, DENSO CORPORATIONInventors: Kazuhiro KOSAKA, Ryota Tanabe, Souichi Yoshinaga, Masahiko Yamashita, Seigo Satou, Mitsutoshi Kameda, Tsugio Takeda
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Patent number: 7835159Abstract: A second member is superposed on a first member. A first recognition mark is described on the surface of the first member. A second recognition mark is described on the surface of the second members. The first recognition mark is fragmented along the edge of the second member when the second member is superposed on the first member. The second recognition mark ends at the edge of the second member. The second recognition mark cooperates with the first recognition mark for establishment of a predetermined geometric pattern. The relative positions of the first and second recognition marks can be adjusted based on an irregular or unshaped geometric pattern. The second member can thus reliably be superposed on the surface of the first member at the correct position.Type: GrantFiled: August 28, 2007Date of Patent: November 16, 2010Assignee: Fujitsu LimitedInventors: Kinuko Mishiro, Yutaka Higashiguchi, Masahiko Yamashita
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Publication number: 20080101048Abstract: A second member is superposed on a first member. A first recognition mark is described on the surface of the first member. A second recognition mark is described on the surface of the second members. The first recognition mark is fragmented along the edge of the second member when the second member is superposed on the first member. The second recognition mark ends at the edge of the second member. The second recognition mark cooperates with the first recognition mark for establishment of a predetermined geometric pattern. The relative positions of the first and second recognition marks can be adjusted based on an irregular or unshaped geometric pattern. The second member can thus reliably be superposed on the surface of the first member at the correct position.Type: ApplicationFiled: August 28, 2007Publication date: May 1, 2008Applicant: FUJITSU LIMITEDInventors: Kinuko Mishiro, Yutaka Higashiguchi, Masahiko Yamashita
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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
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Patent number: 5675600Abstract: A laser diode driver solves problems of APC (Auto Power Control) group, a LD monitor group, and an optical output waveform, which occur when reducing adjusting resistors constituted in a conventional laser diode drive.Type: GrantFiled: June 11, 1996Date of Patent: October 7, 1997Assignee: Fujitsu LimitedInventors: Satoshi Yamamoto, Tetsuya Fukaya, Shuhei Kawauchi, Masahiko Yamashita
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Patent number: 5636048Abstract: In an equalizing amplifier that equalizes an electric signal obtained from a light signal received via an optical transmission path, an AGC circuit generates first and second signals from the electric signal by referring to a threshold voltage. The first and second signals are complementary signals. An offset compensation circuit generates a first difference signal based on a difference between the first and second signals, compares the first difference signal with a first reference signal, and outputs, as the threshold voltage, a resultant error signal to the AGC circuit. The threshold voltage is varied so that it is located in the center of an amplitude of the electric signal whereby an offset of the AGC circuit can be compensated for.Type: GrantFiled: March 16, 1995Date of Patent: June 3, 1997Assignee: Fujitsu LimitedInventors: Kazuhisa Kogure, Hirokazu Osada, Yasuhiro Tanaka, Hiroo Kitasagami, Makoto Miyoshi, Kakuji Inoue, Takayoshi Ikegami, Kenichi Kobayashi, Shinichiro Sano, Setsuo Misaizu, Masahiko Yamashita, Tatsuya Nishimura