Patents by Inventor Shinya Kumagai
Shinya Kumagai 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: 10992352Abstract: A base station apparatus includes a transmitter configured to generate a plurality of beams by a plurality of antenna elements so as to transmit a data signal addressed to a plurality of terminal devices, a memory, and a processor coupled to the memory and configured to select, for each terminal device, a combination of terminal devices to which the data signal is transmitted by spatially multiplexed, based on information in which a first beam group including a first beam in which a reception quality of each terminal device is maximized among the plurality of beams is associated with a second beam group including a second beam in which a difference from the reception quality of the first beam is equal to or larger than a predetermined value among the plurality of beams.Type: GrantFiled: August 26, 2019Date of Patent: April 27, 2021Assignee: FUJITSU LIMITEDInventors: Shinya Kumagai, Takashi Seyama
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Publication number: 20200275287Abstract: A base station device includes a central unit; and a distributed unit. The distributed unit includes a first processor configured to form beams in plural directions by using plural antenna elements; and transmit and receive a data signal addressed to a terminal device. The central unit includes a second processor configured to select a first beam and a second beam set, by using: relevant information on the beams, the relevant information being notified by the distributed unit that forms the beams; and reception quality of the beams in the terminal device; cause the distributed unit to transmit a reference signal by application of a beam group formed of: one or more beams in the second beam set; and the first beam; and select a beam group to be applied to the data signal, by using a reception state of the reference signal from the terminal device in a predetermined interval.Type: ApplicationFiled: January 22, 2020Publication date: August 27, 2020Applicant: FUJITSU LIMITEDInventor: Shinya Kumagai
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Patent number: 10623079Abstract: A base station includes a processor. The processor is configured to transmit, to each of terminal devices, a data signal and a reference signal used for demodulating the data signal while the data signal and the reference signal are spatially multiplexed, by forming a plurality of beams while using a plurality of antenna elements. The processor is configured to calculate an index value related to correlation among the terminal devices, on a basis of propagation path information between any of the terminal devices subject to the spatial multiplexing. The processor is configured to assign the reference signals to the terminal devices subject to the spatial multiplexing in accordance with the index values among the terminal devices.Type: GrantFiled: December 16, 2018Date of Patent: April 14, 2020Assignee: FUJITSU LIMITEDInventor: Shinya Kumagai
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Publication number: 20200099421Abstract: A base station apparatus includes a transmitter configured to generate a plurality of beams by a plurality of antenna elements so as to transmit a data signal addressed to a plurality of terminal devices, a memory, and a processor coupled to the memory and configured to select, for each terminal device, a combination of terminal devices to which the data signal is transmitted by spatially multiplexed, based on information in which a first beam group including a first beam in which a reception quality of each terminal device is maximized among the plurality of beams is associated with a second beam group including a second beam in which a difference from the reception quality of the first beam is equal to or larger than a predetermined value among the plurality of beams.Type: ApplicationFiled: August 26, 2019Publication date: March 26, 2020Applicant: FUJITSU LIMITEDInventors: Shinya Kumagai, Takashi Seyama
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Patent number: 10567067Abstract: A wireless base station that includes: a transmitter that employs a plurality of antenna elements to form a beam in each of a plurality of transmission directions and transmit a reference signal; a receiver that receives a value representing reception quality of the reference signal for a user device that has received the reference signal; a memory; and a processor connected to the memory, the processor being configured to employ an indicator value, representing reception quality for a user device group computed from values received by the receiver that represent reception quality for each of a plurality of user devices, in order to select a combination of beams to employ in user data transmission from the plurality of beams transmitted by the transmitter.Type: GrantFiled: February 14, 2018Date of Patent: February 18, 2020Assignee: FUJITSU LIMITEDInventor: Shinya Kumagai
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Patent number: 10541423Abstract: An electrode mixture layer composition for a nonaqueous electrolyte secondary battery contains an active material, water and a binder. The binder contains a crosslinked polymer of a monomer component including an ethylenically unsaturated carboxylic acid monomer, and a salt thereof. The crosslinked polymer is a polymer that is crosslinked with allyl methacrylate, and an amount of the allyl methacrylate used is 0.1 to 2.0 parts by weight relative to total 100 parts by weight of non-crosslinking monomers, and a content of the crosslinked polymer and salt thereof is 0.5% to 5.0% by weight of the active material.Type: GrantFiled: March 29, 2016Date of Patent: January 21, 2020Assignee: TOAGOSEI CO. LTD.Inventors: Hideo Matsuzaki, Naohiko Saito, Morikatsu Matsunaga, Shinya Kumagai
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Publication number: 20190215050Abstract: A base station includes a processor. The processor is configured to transmit, to each of terminal devices, a data signal and a reference signal used for demodulating the data signal while the data signal and the reference signal are spatially multiplexed, by forming a plurality of beams while using a plurality of antenna elements. The processor is configured to calculate an index value related to correlation among the terminal devices, on a basis of propagation path information between any of the terminal devices subject to the spatial multiplexing. The processor is configured to assign the reference signals to the terminal devices subject to the spatial multiplexing in accordance with the index values among the terminal devices.Type: ApplicationFiled: December 16, 2018Publication date: July 11, 2019Applicant: FUJITSU LIMITEDInventor: Shinya Kumagai
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Publication number: 20190199411Abstract: A base station includes a processor and a plurality of antennas that transmit, to each of terminals, first and second wireless signals to form first and second beams, respectively, and receive, from each terminal, a third wireless signal including feedback information of the terminal in response to the second wireless signal. The processor selects, from among the terminals, based on the feedback information and a correlation value between the first beam and the second beam, a terminal to which the second beam is optimum, as a first terminal that performs communication via the first beam, or selects a terminal as a second terminal that performs communication via the second beam while communication via the first beam is performed in parallel. The plurality of antennas transmit a fourth wireless signal including data to each terminal apparatus to form the first beam or the second beam.Type: ApplicationFiled: December 16, 2018Publication date: June 27, 2019Applicant: FUJITSU LIMITEDInventors: Shinya Kumagai, Teppei Oyama, Takashi Seyama
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Patent number: 10298312Abstract: There is provided a wireless base station that stores information on a plurality of different first precodings and information on a plurality of different reception weights; transmits, from antennas, a plurality of downlink reference signals, each of which is obtained by applying one of the first precodings; receives information on reception quality of the downlink reference signals from wireless terminals; selects at least one from the wireless terminals based on the information on reception quality; determines wireless resource allocation for allowing the selected wireless terminal to transmit an uplink reference signal; notifies the selected wireless terminal of the wireless resource allocation; and receives the uplink reference signal transmitted from the selected wireless terminal by applying each of the reception weights to the uplink reference signal.Type: GrantFiled: January 3, 2018Date of Patent: May 21, 2019Assignee: FUJITSU LIMITEDInventors: Shinya Kumagai, Takashi Seyama
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Publication number: 20180262258Abstract: A wireless base station that includes: a transmitter that employs a plurality of antenna elements to form a beam in each of a plurality of transmission directions and transmit a reference signal; a receiver that receives a value representing reception quality of the reference signal for a user device that has received the reference signal; a memory; and a processor connected to the memory, the processor being configured to employ an indicator value, representing reception quality for a user device group computed from values received by the receiver that represent reception quality for each of a plurality of user devices, in order to select a combination of beams to employ in user data transmission from the plurality of beams transmitted by the transmitter.Type: ApplicationFiled: February 14, 2018Publication date: September 13, 2018Applicant: FUJITSU LIMITEDInventor: Shinya Kumagai
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Publication number: 20180205443Abstract: There is provided a wireless base station that stores information on a plurality of different first precodings and information on a plurality of different reception weights; transmits, from antennas, a plurality of downlink reference signals, each of which is obtained by applying one of the first precodings; receives information on reception quality of the downlink reference signals from wireless terminals; selects at least one from the wireless terminals based on the information on reception quality; determines wireless resource allocation for allowing the selected wireless terminal to transmit an uplink reference signal; notifies the selected wireless terminal of the wireless resource allocation; and receives the uplink reference signal transmitted from the selected wireless terminal by applying each of the reception weights to the uplink reference signal.Type: ApplicationFiled: January 3, 2018Publication date: July 19, 2018Applicant: FUJITSU LIMITEDInventors: Shinya Kumagai, Takashi Seyama
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Publication number: 20180108917Abstract: An electrode mixture layer composition for a nonaqueous electrolyte secondary battery contains an active material, water and a binder. The binder contains a crosslinked polymer of a monomer component including an ethylenically unsaturated carboxylic acid monomer, and a salt thereof. The crosslinked polymer is a polymer that is crosslinked with allyl methacrylate, and an amount of the allyl methacrylate used is 0.1 to 2.0 parts by weight relative to total 100 parts by weight of non-crosslinking monomers, and a content of the crosslinked polymer and salt thereof is 0.5% to 5.0% by weight of the active material.Type: ApplicationFiled: March 29, 2016Publication date: April 19, 2018Applicant: TOAGOSEI CO., LTD.Inventors: Hideo MATSUZAKI, Naohiko SAITO, Morikatsu MATSUNAGA, Shinya KUMAGAI
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Publication number: 20180102542Abstract: A binder for nonaqueous electrolyte secondary battery electrodes, which contains an acrylic crosslinked polymer or salt thereof, and which is characterized in that: the acrylic crosslinked polymer contains, in all the constituent monomers thereof, 30-90% by weight of an ethylenically unsaturated carboxylic acid monomer (component (a)) and 10-70% by weight of an ethylenically unsaturated monomer containing no carboxyl group and having an SP value of a homopolymer of 9.0-12.5 (cal/cm3)1/2 (component (b)); and the ratio of monomers having a ratio of an acryloyl group of the total constituent monomers is 70% by weight or more.Type: ApplicationFiled: April 11, 2016Publication date: April 12, 2018Applicant: TOAGOSEI CO., LTD.Inventors: Hideo MATSUZAKI, Naohiko SAITO, Morikatsu MATSUNAGA, Shinya KUMAGAI
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Patent number: 8728771Abstract: The present invention provides a L-succinylacylase consisting of: (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; or (d) a protein which consists of an amino acid sequence where one or several amino acid(s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity. This enzyme is able to produce a sterically bulky unnatural amino acid such as L-tert-leucine etc. which is useful as an intermediate for pharmaceuticals.Type: GrantFiled: December 10, 2009Date of Patent: May 20, 2014Assignees: Toyo Boseki Kabushiki Kaisha, Sekisui Medical Co., Ltd.Inventors: Atsushi Toda, Sachio Iwai, Yoshiaki Nishiya, Shinya Kumagai
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Patent number: 8712297Abstract: A transfer device includes an endless member caused to circulate by a driving unit, plural transfer members coming in contact with a rear surface of the endless member and transferring toner images on image holding members to the endless member, a support member movably supporting a specific transfer member of the transfer members located at a position which is more upstream in a circulation direction of the endless member than a contact position where a recording medium comes in contact with the endless member and which is closest to the contact position, a regulation member regulating the movement of the specific transfer member in a state where the specific transfer member is disposed at a position where the toner image formed on the corresponding image holding member is transferred to the endless member, and a first impelling member impelling the support member to the regulation member.Type: GrantFiled: October 12, 2011Date of Patent: April 29, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Shiro Ohashi, Hiroshi Nishikawa, Hiroki Shiba, Shinya Kumagai
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Patent number: 8470574Abstract: The present invention provides an L-aminoacylase which is able to produce L-tert-leucine being useful as an intermediate for pharmaceuticals. A protein which is characterized in being represented by any of the following (a) to (d): (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; and (d) a protein which consists of an amino acid sequence where one or several amino acid (s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity.Type: GrantFiled: May 7, 2009Date of Patent: June 25, 2013Assignees: Toyo Boseki Kabushiki Kaisha, Sekisui Medical Co., Ltd.Inventors: Atsushi Toda, Sachio Iwai, Yoshiaki Nishiya, Takeshi Miyata, Aya Oosato, Shinya Kumagai, Toshihide Yamada
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Publication number: 20120251193Abstract: A transfer device includes an endless member caused to circulate by a driving unit, plural transfer members coming in contact with a rear surface of the endless member and transferring toner images on image holding members to the endless member, a support member movably supporting a specific transfer member of the transfer members located at a position which is more upstream in a circulation direction of the endless member than a contact position where a recording medium comes in contact with the endless member and which is closest to the contact position, a regulation member regulating the movement of the specific transfer member in a state where the specific transfer member is disposed at a position where the toner image formed on the corresponding image holding member is transferred to the endless member, and a first impelling member impelling the support member to the regulation member.Type: ApplicationFiled: October 12, 2011Publication date: October 4, 2012Applicant: FUJI XEROX CO., LTD.Inventors: Shiro OHASHI, Hiroshi NISHIKAWA, Hiroki SHIBA, Shinya KUMAGAI
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Publication number: 20110250653Abstract: The present invention provides a L-succinylacylase consisting of: (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; or (d) a protein which consists of an amino acid sequence where one or several amino acid(s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity. This enzyme is able to produce a sterically bulky unnatural amino acid such as L-tert-leucine etc. which is useful as an intermediate for pharmaceuticals.Type: ApplicationFiled: December 10, 2009Publication date: October 13, 2011Applicants: SEKISUI MEDICAL CO., LTD., TOYO BOSEKI KABUSHIKI KAISHAInventors: Atsushi Toda, Sachio Iwai, Yoshiaki Nishiya, Shinya Kumagai
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Publication number: 20110244530Abstract: The present invention provides an L-aminoacylase which is able to produce L-tert-leucine being useful as an intermediate for pharmaceuticals. A protein which is characterized in being represented by any of the following (a) to (d): (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; and (d) a protein which consists of an amino acid sequence where one or several amino acid (s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity.Type: ApplicationFiled: May 7, 2009Publication date: October 6, 2011Applicants: TOYO BOSEKI KABUSHIKI KAISHA, SEKISUI MEDICAL CO., LTD.Inventors: Atsushi Toda, Sachio Iwai, Yoshiaki Nishiya, Takeshi Miyata, Aya Oosato, Shinya Kumagai, Toshihide Yamada
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Patent number: 7919596Abstract: To provide a method of arranging ferritin by which a high rate of the number of the molecular film spots on which sole ferritin molecule was arranged in effect, with respect to total number of the molecular film spots provided for arranging ferritin (sole arrangement rate) is achieved is objected to. Specifically, in Fer8 ferritin having a sequence excluding 7 amino acids of from the second to the eighth, from an amino acid sequence (Fer0 sequence) translated from a naturally occurring DNA sequence, lysine at position 91 is substituted with glutamic acid.Type: GrantFiled: January 29, 2009Date of Patent: April 5, 2011Assignee: Panasonic CorporationInventors: Shigeo Yoshii, Kazuaki Nishio, Shinya Kumagai, Ichiro Yamashita