Patents by Inventor Kentaro Sakata
Kentaro Sakata 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: 11981088Abstract: Disclosed is a molded article including a modified fibroin and a water resistance-imparting material. The modified fibroin and the water resistance-imparting material may be covalently bonded.Type: GrantFiled: April 1, 2019Date of Patent: May 14, 2024Assignee: Spiber Inc.Inventors: Kazuki Sakata, Kentaro Takahashi
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Publication number: 20240121530Abstract: A light detector is configured such that a light receiving portion having APDs and a peripheral portion are provided on a first principal surface of a p-type semiconductor substrate, and further includes a back electrode provided on a second principal surface of the semiconductor substrate and a p-type first separation portion provided between the light receiving portion and the peripheral portion. The APD has, on a first principal surface side, an n-type region and a p-epitaxial layer contacting the n-type region in a Z-direction. The peripheral portion has an n-type MISFET provided at a p-well and an n-well provided to surround entire side and bottom portions of the p-well.Type: ApplicationFiled: December 15, 2023Publication date: April 11, 2024Inventors: Tatsuya KABE, Hideyuki ARAI, Hisashi AIKAWA, Yuki SUGIURA, Akito INOUE, Mitsuyoshi MORI, Kentaro NAKANISHI, Yusuke SAKATA
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Patent number: 11592059Abstract: A thrust magnetic bearing device includes: a thrust disc fixed to a rotating body; and a pair of electromagnets provided so as to sandwich the thrust disc and be spaced apart from the thrust disc in a direction along a rotation axis. Each of the pair of electromagnets includes: a coil wound around the rotation axis of the rotating body; and a ring-shaped core accommodating the coil. The core includes a slit which is located at at least one circumferential position of the core and extends from an outside outer peripheral surface as a starting point toward a center of the core. The slit is formed in a range including at least an inside outer peripheral surface.Type: GrantFiled: December 14, 2018Date of Patent: February 28, 2023Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryoma Yamamoto, Yoshihiko Ozaki, Kentaro Sakata, Masanori Kuroda, Masashi Sawada
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Publication number: 20200340525Abstract: A thrust magnetic bearing device includes: a thrust disc fixed to a rotating body; and a pair of electromagnets provided so as to sandwich the thrust disc and be spaced apart from the thrust disc in a direction along a rotation axis. Each of the pair of electromagnets includes: a coil wound around the rotation axis of the rotating body; and a ring-shaped core accommodating the coil. The core includes a slit which is located at at least one circumferential position of the core and extends from an outside outer peripheral surface as a starting point toward a center of the core. The slit is formed in a range including at least an inside outer peripheral surface.Type: ApplicationFiled: December 14, 2018Publication date: October 29, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryoma YAMAMOTO, Yoshihiko OZAKI, Kentaro SAKATA, Masanori KURODA, Masashi SAWADA
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Patent number: 9698603Abstract: A first internal phase difference angle calculator for integrating a deviation between a first frequency command value and a frequency obtained by frequency obtaining device to calculate a first internal phase difference angle, a first internal electromotive voltage command value calculator for proportioning and calculating a deviation between a first reactive power command value and a reactive power obtained based on the value measured by first measuring device, and adding a reference voltage to the deviation so as to calculate a first internal electromotive voltage command value, and a first current command value calculator for calculating a command value of an output current from a first power converter based on the first internal phase difference angle, the first internal electromotive voltage command value, and a voltage measured by the voltage measuring device. The apparatus controls the first power converter based on an output from the first current command value calculator.Type: GrantFiled: December 5, 2013Date of Patent: July 4, 2017Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazushige Sugimoto, Masahide Kawamura, Kentaro Sakata, Mitsuchika Ogawa, Kentaro Tsuda, Takefumi Iizaka, Yuko Hirase
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Patent number: 9356448Abstract: The present invention provides an electric power converting unit that does not require a change in a control method in, for example, system interconnection by calculating a target value of an output current of an electric power converter from an internal phase angle calculated from an active electric power control loop and an internal electromotive voltage calculated from a reactive electric power control loop. Thus, a stand-alone power supply system that is easy to handle can be configured.Type: GrantFiled: July 4, 2012Date of Patent: May 31, 2016Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazushige Sugimoto, Masahide Kawamura, Kentaro Sakata, Mitsuchika Ogawa, Kentaro Tsuda, Takefumi Iizaka, Yuko Hirase
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Publication number: 20150357820Abstract: A first internal phase difference angle calculator for integrating a deviation between a first frequency command value and a frequency obtained by frequency obtaining device to calculate a first internal phase difference angle, a first internal electromotive voltage command value calculator for proportioning and calculating a deviation between a first reactive power command value and a reactive power obtained based on the value measured by first measuring device, and adding a reference voltage to the deviation so as to calculate a first internal electromotive voltage command value, and a first current command value calculator for calculating a command value of an output current from a first power converter based on the first internal phase difference angle, the first internal electromotive voltage command value, and a voltage measured by the voltage measuring device. The apparatus controls the first power converter based on an output from the first current command value calculator.Type: ApplicationFiled: December 5, 2013Publication date: December 10, 2015Inventors: Kazushige SUGIMOTO, Masahide KAWAMURA, Kentaro SAKATA, Mitsuchika OGAWA, Kentaro TSUDA, Takefumi IIZAKA, Yuko HIRASE
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Publication number: 20140152110Abstract: The present invention provides an electric power converting unit that does not require a change in a control method in, for example, system interconnection by calculating a target value of an output current of an electric power converter from an internal phase angle calculated from an active electric power control loop and an internal electromotive voltage calculated from a reactive electric power control loop. Thus, a stand-alone power supply system that is easy to handle can be configured.Type: ApplicationFiled: July 4, 2012Publication date: June 5, 2014Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazushige Sugimoto, Masahide Kawamura, Kentaro Sakata, Mitsuchika Ogawa, Kentaro Tsuda, Takefumi Iizaka, Yuko Hirase
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Publication number: 20100248597Abstract: The equipment for cleaning polishing cloth is capable of increasing pressure of washing water received by the polishing cloth, securely removing deposits from the polishing cloth and improving polishing efficiency. The equipment is used in a polishing apparatus, in which a work piece is pressed onto the polishing cloth adhered on a polishing plate and the work piece is relatively moved with respect to the polishing plate with supplying slurry to the polishing cloth so as to polish the work piece. The equipment comprises a nozzle unit having a nozzle capable of spraying high-pressure washing water toward the polishing cloth so as to clean the polishing cloth. The nozzle is a straight nozzle capable of linearly spraying the washing water and perpendicularly spraying the washing water with respect to the polishing cloth.Type: ApplicationFiled: March 26, 2010Publication date: September 30, 2010Inventor: Kentaro SAKATA
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Patent number: 5170642Abstract: A reusable ear piercing earring includes a piercing pin with a circumferential groove formed therein. The groove is positioned between a pointed end of said piercing pin and a proximate end of said piercing pin. A distal end portion of the piercing pin including the pointed end is adapted to be broken off from the proximate end of the piercing pin at the groove. The circumferential groove is formed into a substantially V-shaped cross-section wherein one surface of the circumferential groove on the same side as the pointed end is inclined at an inclination angle .theta. of about 20.degree..+-.10.degree. with respect to a plane perpendicular to the axis of the piercing pin. The other surface of the groove opposite to the one surface is arcuate or round. The earring is first inserted through the ear. To reuse the earring the distal end portion of the piercing pin is separated from the proximate end of the piercing pin at the groove to provide a piercing pin with a new distal end.Type: GrantFiled: February 20, 1991Date of Patent: December 15, 1992Assignee: Universe Yamaki Co., Ltd.Inventor: Kentaro Sakata