Patents by Inventor Atsushi Mizuno

Atsushi Mizuno 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).

  • Patent number: 12143273
    Abstract: It is an objective of the present disclosure to reduce computational complexity for obtaining a network topology configuration capable of efficiently accommodating a plurality of traffic demands assumed between nodes present in a network. A device of the present disclosure includes: a computation traffic generation unit that creates a traffic demand matrix whose elements are values individually obtained by demands between nodes present in a target network area from a plurality of traffic demand matrices created based on predicted traffic demands between the nodes; and a network topology generation unit that generates a network topology based on the traffic demand matrix generated by the computation traffic generation unit and port information of the nodes in the network area.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: November 12, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kazuya Anazawa, Toru Mano, Takeru Inoue, Atsushi Taniguchi, Kohei Mizuno
  • Patent number: 12133114
    Abstract: An event regarding control of a terminal that significantly affects communication quality with which communication between the terminal and an external communication device is performed is predicted by acquiring surrounding information of the terminal using a surrounding environment information collection unit, and a packet loss caused in communication, communication disconnection, and communication quality that does not meet required performance are prevented using communication control to change setting related to communication, such as selection/addition/deletion of a communication counterpart, selection/change of a communication scheme, a change in modulation scheme, coding rate, and number of spatial multiplexings of communication, and a change in setting of an automatic gain controller of a receiver for communication.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: October 29, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Riichi Kudo, Takeru Inoue, Atsushi Taniguchi, Kohei Mizuno
  • Publication number: 20240250501
    Abstract: A surface-emitting type semiconductor laser includes a substrate, and a structure that includes a first multilayer-film reflective mirror of a first conductivity type formed on the substrate, an active layer formed on the first multilayer-film reflective mirror, and a second multilayer-film reflective mirror of a second conductivity type that is formed on the active layer and includes a current confinement layer, and that is a structure in which a shape of an aperture formed in the current confinement layer to represent a part not subjected to oxide confinement is a shape not including an axially symmetrical or point symmetrical part.
    Type: Application
    Filed: October 25, 2023
    Publication date: July 25, 2024
    Applicants: FUJIFILM BUSINESS INNOVATION CORP., FUJIFILM CORPORATION
    Inventors: Naoya SEKITA, Takeshi MINAMIRU, Yuto IWANE, Koga MIZUNO, Kazutaka TAKEDA, Atsushi MUKAI
  • Patent number: 10493394
    Abstract: Provided is a porous material which is not easily damaged even when being exposed to a high temperature in a low oxygen atmosphere, and has heat resistance improved. A porous material includes aggregates formed of a nonoxide containing silicon and a binding material formed of an oxide ceramic binding the aggregates to each other while keeping a plurality of pores. The porous material has a phase containing oxygen on a surface of the aggregates including a boundary surface with the binding material. In the porous material, a content ratio of oxygen in the aggregates is preferably from 2 to 25% by mass relative to the mass of the aggregates.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 3, 2019
    Assignee: NGK Insulators, Ltd.
    Inventors: Atsushi Mizuno, Ryuta Kouno, Shuichi Ichikawa
  • Publication number: 20170282108
    Abstract: Provided is a porous material which is not easily damaged even when being exposed to a high temperature in a low oxygen atmosphere, and has heat resistance improved. A porous material includes aggregates formed of a nonoxide containing silicon and a binding material formed of an oxide ceramic binding the aggregates to each other while keeping a plurality of pores. The porous material has a phase containing oxygen on a surface of the aggregates including a boundary surface with the binding material. In the porous material, a content ratio of oxygen in the aggregates is preferably from 2 to 25% by mass relative to the mass of the aggregates.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Atsushi MIZUNO, Ryuta KOUNO, Shuichi ICHIKAWA
  • Patent number: 9777343
    Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: October 3, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa
  • Patent number: 9764990
    Abstract: A honeycomb structure includes a honeycomb structure body having a partition wall which is constituted of a porous body. The porous body includes a refractory aggregate and a bonding material. The porous body constituting includes the bonding material at a mass proportion of 20 to 35 mass %. In an observation of a cross section of the partition wall with an electron microscope, when observing any given ten visual fields meeting a following condition (1), the number of refractory aggregates meeting a following condition (2) is five pieces or more in all of the ten visual fields. Condition (1): a proportion of an area occupied by the bonding material is 30% or more. Condition (2): the refractory aggregate has a particle diameter of 5 ?m or more, and 60% or more of an outer circumference of the refractory aggregate is surrounded by the bonding material.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: September 19, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Shuichi Ichikawa, Atsushi Mizuno, Yukio Miyairi
  • Patent number: 9725783
    Abstract: Steel for machine structure use excellent in tool lifetime in a broad range of cutting speeds regardless of continuous machining, intermittent machining, or other systems and further in various machining environments such as use of a cutting fluid or a dry, semidry, and oxygen enriched environment, having a chemical composition containing, by mass %, C: 0.01 to 1.2%, Si: 0.005 to 3.0%, Mn: 0.05 to 3.0%, P: 0.0001 to 0.2%, S: 0.0001 to 0.35%, N: 0.0005 to 0.035%, and Al: 0.05 to 1.0%, satisfying [Al %]?(27/14)×[N %]?0.05%, and having a balance of Fe and unavoidable impurities and forming an Al2O3 coating on the surface of a cutting tool by machining using a cutting tool coated on the surface contacting the machined material by metal oxides with a value of a standard free energy of formation at 1300° C. of that value of Al2O3 or more, and a machining method of the same.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: August 8, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Toshiharu Aiso, Hajime Saitoh, Atsushi Mizuno
  • Patent number: 9640804
    Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body (20), and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions. The connector contact portions include asperities (19e) on outside surfaces of the connector contact portions on the side where the connector contact portions are in contact with the IC 13, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: May 2, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
  • Patent number: 9455453
    Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body, and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions, the connector contact portions, the cell body contact portions, and the connecting portions being formed in line. The current collecting members (19) include asperities (19e) on inside surfaces oriented inward, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: September 27, 2016
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
  • Patent number: 9259721
    Abstract: There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: February 16, 2016
    Assignee: NGK Insulators, Ltd
    Inventors: Shuichi Ichikawa, Atsushi Mizuno
  • Patent number: 9217344
    Abstract: A honeycomb filter includes a honeycomb structure and plugged portions. Partition walls of the honeycomb structure are made of a partition wall material including a plurality of aggregates containing silicon carbide or silicon nitride as a main component, and a binding material at a content of 15 to 35 mass %. The binding material is made of a material in which mullite particles as reinforcing particles may be dispersed in cordierite. A thermal expansion coefficient of the partition walls at 40 to 800° C. is 4.2×10?6 1/K or less. When a value of a stress applied to the partition wall material at 900° C. is normalized by the maximum value of the stress applied to the partition wall material, a percentage of a plastic deformation displacement in a total displacement at a normalized stress value of 0.9 is in a range of 0.3 to 10%.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: December 22, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Atsushi Mizuno, Suguru Kodama, Yasushi Uchida, Takahiro Kondo, Yukio Miyairi
  • Patent number: 9156231
    Abstract: Steel for machine structure use for surface hardening containing, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 1.5% to 3.0%, W: 0.0025 to 0.5%, Al: 0.001 to 0.5%, N: 0.003 to 0.02%, S: 0.0001 to 0.025%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, having an Mn/S of 70 to 30000, and having a balance of substantially Fe and unavoidable impurities.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 13, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi Mizuno, Masayuki Hashimura, Hajime Saitoh, Shuji Kozawa, Kei Miyanishi
  • Publication number: 20150259254
    Abstract: A honeycomb structure includes a honeycomb structure body having a partition wall which is constituted of a porous body. The porous body includes a refractory aggregate and a bonding material. The porous body constituting includes the bonding material at a mass proportion of 20 to 35 mass %. In an observation of a cross section of the partition wall with an electron microscope, when observing any given ten visual fields meeting a following condition (1), the number of refractory aggregates meeting a following condition (2) is five pieces or more in all of the ten visual fields. Condition (1): a proportion of an area occupied by the bonding material is 30% or more. Condition (2): the refractory aggregate has a particle diameter of 5 ?m or more, and 60% or more of an outer circumference of the refractory aggregate is surrounded by the bonding material.
    Type: Application
    Filed: January 8, 2015
    Publication date: September 17, 2015
    Inventors: Shuichi ICHIKAWA, Atsushi MIZUNO, Yukio MIYAIRI
  • Patent number: 9127336
    Abstract: Provided is a hot-working steel excellent in machinability and impact value comprising, in mass %, C: 0.06 to 0.85%, Si: 0.01 to 1.5%, Mn: 0.05 to 2.0%, P: 0.005 to 0.2%, S: 0.001 to 0.35%, and Al: 0.06 to 1.0% and N: 0.016% or less, in contents satisfying Al×N×105?96, and a balance of Fe and unavoidable impurities, total volume of AlN precipitates of a circle-equivalent diameter exceeding 200 nm accounting for 20% or less of total volume of all AlN precipitates.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: September 8, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kei Miyanishi, Masayuki Hashimura, Atsushi Mizuno
  • Publication number: 20150214557
    Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body (20), and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions. The connector contact portions include asperities (19e) on outside surfaces of the connector contact portions on the side where the connector contact portions are in contact with the IC 13, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.
    Type: Application
    Filed: July 25, 2013
    Publication date: July 30, 2015
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
  • Publication number: 20150200404
    Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body, and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions, the connector contact portions, the cell body contact portions, and the connecting portions being formed in line. The current collecting members (19) include asperities (19e) on inside surfaces oriented inward, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.
    Type: Application
    Filed: July 25, 2013
    Publication date: July 16, 2015
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
  • Publication number: 20150093540
    Abstract: There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide.
    Type: Application
    Filed: September 5, 2014
    Publication date: April 2, 2015
    Inventors: Shuichi ICHIKAWA, Atsushi MIZUNO
  • Publication number: 20140251507
    Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and 0:0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.
    Type: Application
    Filed: April 14, 2014
    Publication date: September 11, 2014
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa
  • Patent number: 8802005
    Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: August 12, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa