Patents by Inventor Daisuke Furusawa

Daisuke Furusawa 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: 11934360
    Abstract: A database storing data associated with an identifier unique to each sample, the data including first data representative of at least one of composition data, processing data, and property data for the each sample, and second data representative of microstructure data for the each sample. The microstructure data includes a feature determined based on a temperature dependence of magnetization for the each sample.
    Type: Grant
    Filed: June 5, 2023
    Date of Patent: March 19, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Takeshi Nishiuchi, Daisuke Furusawa, Asami Oya
  • Patent number: 11803522
    Abstract: A database storing data associated with an identifier unique to each sample, the data including first data representative of at least one of composition data, processing data, and property data for the each sample, and second data representative of microstructure data for the each sample. The microstructure data includes a feature determined based on a temperature dependence of magnetization for the each sample.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: October 31, 2023
    Assignee: PROTERIAL, LTD.
    Inventors: Takeshi Nishiuchi, Daisuke Furusawa, Asami Oya
  • Publication number: 20230325365
    Abstract: A database storing data associated with an identifier unique to each sample, the data including first data representative of at least one of composition data, processing data, and property data for the each sample, and second data representative of microstructure data for the each sample. The microstructure data includes a feature determined based on a temperature dependence of magnetization for the each sample.
    Type: Application
    Filed: June 5, 2023
    Publication date: October 12, 2023
    Inventors: Takeshi NISHIUCHI, Daisuke FURUSAWA, Asami OYA
  • Publication number: 20230307158
    Abstract: A sintered R-T-B based magnet includes a main phase formed of an R2T14B compound and a grain boundary phase at grain boundaries of the main phase. The grain boundary phase contains an R-T-M compound (M is at least one selected from the group consisting of Ga, Cu, Zn, Al and Si) and an R-M compound. In any cross-section of the sintered R-T-B based magnet, a sum of an area ratio of the R-T-M compound and an area ratio of the R-M compound is not lower than 1.5% and not higher than 3.5%, the area ratio of the R-T-M compound is not lower than 0.4% and not higher than 2.5%, and the area ratio of the R-M compound is not lower than 0.4% and not higher than 2.5%.
    Type: Application
    Filed: February 23, 2023
    Publication date: September 28, 2023
    Inventors: Daisuke FURUSAWA, Futoshi KUNIYOSHI
  • Publication number: 20230041536
    Abstract: A database storing data associated with an identifier unique to each sample, the data including first data representative of at least one of composition data, processing data, and property data for the each sample, and second data representative of microstructure data for the each sample. The microstructure data includes a feature determined based on a temperature dependence of magnetization for the each sample.
    Type: Application
    Filed: August 2, 2022
    Publication date: February 9, 2023
    Inventors: Takeshi NISHIUCHI, Daisuke FURUSAWA, Asami OYA
  • Publication number: 20230040720
    Abstract: A method for manufacturing an R-T-B based sintered magnet according the present disclosure comprises: a step for preparing a coarse ground powder which is made from an alloy for R-T-B based sintered magnets and which has an average particle size of 10-500 ?m; a step for obtaining a fine powder having an average particle size of 2.0-4.5 ?m, by feeding the coarse ground powder to a jet mill device that has a grinding chamber filled with inert gas and grinding the coarse ground powder; and a step for producing a sintered body of the fine powder, wherein the inert gas has been humidified, and the oxygen content of the R-T-B based sintered magnet is 1000-3500 ppm by mass.
    Type: Application
    Filed: December 24, 2020
    Publication date: February 9, 2023
    Inventors: Nobuhiko FUJIMORI, Tohru OBATA, Kazuhiro SONODA, Futoshi KUNIYOSHI, Daisuke FURUSAWA, Tomohito MAKI, Shuji MINO, Kouta SAITOU
  • Patent number: 11527757
    Abstract: A positive electrode used in a secondary cell that is an example of the present embodiment is provided with a positive electrode collector, an intermediate layer formed on the positive electrode collector, and a positive electrode mixture layer formed on the intermediate layer. The positive electrode mixture layer has a thermally expandable material and a positive electrode active material. The thermally expandable material content of the positive electrode mixture layer is at least 0.1% by mass and less than 5% by mass. The intermediate layer has an insulating inorganic material and a conductive agent. The insulating inorganic material content of the intermediate layer is 80-99% by mass.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 13, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahito Nakayama, Tomoki Shiozaki, Hideharu Takezawa, Daisuke Furusawa, Yuji Oura, Takahiro Takahashi
  • Patent number: 11462773
    Abstract: A secondary battery positive electrode is provided with: a positive electrode current collector; a positive electrode mixture layer; and an intermediate layer disposed between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer comprises first particles configured from an electrically conductive material, and second particles which are configured from an insulating inorganic material and have an average grain size greater than an average grain size of the first particles. The volume ratio of the first particles in the intermediate layer is not less than 25% and less than 70%. The volume ratio of the second particles in the intermediate layer is not less than 30% and less than 75%. The density of the intermediate layer is greater than 1 g/cm3 and not more than 2.5 g/cm3.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 4, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuji Oura, Tomoki Shiozaki, Hideharu Takezawa, Takahito Nakayama, Takahiro Takahashi, Daisuke Furusawa
  • Publication number: 20220231282
    Abstract: A negative-electrode active material for secondary batteries according to one aspect of the present invention comprises: core particles comprising a material which occludes and releases lithium metal; a first layer, which has been formed on the surface of each core particle; and a second layer, which has been formed on the first layer. The first layer comprises at least one substance selected from among amorphous carbon, carbon nanotubes, carbon nanofibers, and electroconductive polymers. The second layer comprises at least one inorganic compound selected from among oxides, phosphoric acid compounds, silicic acid compounds, and boric acid compounds.
    Type: Application
    Filed: April 16, 2020
    Publication date: July 21, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahito Nakayama, Tomoki Shiozaki, Daisuke Furusawa
  • Patent number: 11394030
    Abstract: According to the present invention, a positive electrode is provided with: a positive electrode current collector which contains aluminum; a positive electrode mixture layer which contains a positive electrode active material that is configured of a lithium transition metal oxide; and an intermediate layer which is arranged between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer contains inorganic compound particles, a conductive material and a binder; the circularity is from 5% to 75% (inclusive); the void fraction of the intermediate layer is from 30% to 69% (inclusive); and the average circularity of the inorganic compound particles is from 5% to 75% (inclusive).
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 19, 2022
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daisuke Furusawa, Tomoki Shiozaki, Hideharu Takezawa, Takahito Nakayama, Yuji Oura, Takahiro Takahashi
  • Patent number: 11145938
    Abstract: According to the present invention, a positive electrode is provided with: a positive electrode current collector; a positive electrode active material layer which contains a positive electrode active material that is configured from a lithium transition metal oxide; a protective layer which is arranged between the positive electrode current collector and the positive electrode active material layer; and a positive electrode tab which is bonded with the positive electrode current collector at a positive electrode tab bonding part where the positive electrode active material layer and the protective layer are not formed so that the positive electrode current collector is exposed. An end edge of the positive electrode active material layer facing the positive electrode tab and an end edge of the protective layer facing the positive electrode tab are arranged in different positions in the longitudinal direction of the positive electrode.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: October 12, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tomoki Shiozaki, Daisuke Furusawa, Yuji Oura, Takahiro Takahashi, Takahito Nakayama, Hideharu Takezawa
  • Publication number: 20200119362
    Abstract: This positive electrode is provided with: a positive electrode current collector, a protective layer which is formed on the positive electrode current collector and contains a silicone resin and a conductive material; and a positive electrode mixture layer which is formed on the protective layer and contains a positive electrode active material that is configured from a lithium-containing transition metal oxide.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daisuke Furusawa, Hideharu Takezawa, Tomoki Shiozaki
  • Publication number: 20200052348
    Abstract: A secondary battery positive electrode is provided with: a positive electrode current collector; a positive electrode mixture layer; and an intermediate layer disposed between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer comprises first particles configured from an electrically conductive material, and second particles which are configured from an insulating inorganic material and have an average grain size greater than an average grain size of the first particles. The volume ratio of the first particles in the intermediate layer is not less than 25% and less than 70%. The volume ratio of the second particles in the intermediate layer is not less than 30% and less than 75%. The density of the intermediate layer is greater than 1 g/cm3 and not more than 2.5 g/cm3.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 13, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuji Oura, Tomoki Shiozaki, Hideharu Takezawa, Takahito Nakayama, Takahiro Takahashi, Daisuke Furusawa
  • Publication number: 20200052303
    Abstract: Provided is a secondary battery comprising a positive electrode, a negative electrode, and an electrolyte. The positive electrode is provided with a positive electrode collector, a positive electrode mix layer containing positive electrode active substance particles, and an intermediate layer disposed between the positive electrode collector and positive electrode mix layer. The intermediate layer contains a conductor and a cured product of a curable resin having at least one selected from a glycidyl, hydroxy, carboxyl, amino, acryloyl, and methacryloyl groups.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 13, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahiro Takahashi, Takahito Nakayama, Tomoki Shiozaki, Hideharu Takezawa, Daisuke Furusawa, Yuji Oura
  • Publication number: 20200020951
    Abstract: According to the present invention, a positive electrode is provided with: a positive electrode current collector which contains aluminum; a positive electrode mixture layer which contains a positive electrode active material that is configured of a lithium transition metal oxide; and an intermediate layer which is arranged between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer contains inorganic compound particles, a conductive material and a binder; the circularity is from 5% to 75% (inclusive); the void fraction of the intermediate layer is from 30% to 69% (inclusive); and the average circularity of the inorganic compound particles is from 5% to 75% (inclusive).
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Daisuke Furusawa, Tomoki Shiozaki, Hideharu Takezawa, Takahito Nakayama, Yuji Oura, Takahiro Takahashi
  • Publication number: 20200020950
    Abstract: A positive electrode used in a secondary cell that is an example of the present embodiment is provided with a positive electrode collector, an intermediate layer formed on the positive electrode collector, and a positive electrode mixture layer formed on the intermediate layer. The positive electrode mixture layer has a thermally expandable material and a positive electrode active material. The thermally expandable material content of the positive electrode mixture layer is at least 0.1% by mass and less than 5% by mass. The intermediate layer has an insulating inorganic material and a conductive agent. The insulating inorganic material content of the intermediate layer is 80-99% by mass.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahito Nakayama, Tomoki Shiozaki, Hideharu Takezawa, Daisuke Furusawa, Yuji Oura, Takahiro Takahashi
  • Publication number: 20200020921
    Abstract: According to the present invention, a positive electrode is provided with: a positive electrode current collector; a positive electrode active material layer which contains a positive electrode active material that is configured from a lithium transition metal oxide; a protective layer which is arranged between the positive electrode current collector and the positive electrode active material layer; and a positive electrode tab which is bonded with the positive electrode current collector at a positive electrode tab bonding part where the positive electrode active material layer and the protective layer are not formed so that the positive electrode current collector is exposed. An end edge of the positive electrode active material layer facing the positive electrode tab and an end edge of the protective layer facing the positive electrode tab are arranged in different positions in the longitudinal direction of the positive electrode.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoki Shiozaki, Daisuke Furusawa, Yuji Oura, Takahiro Takahashi, Takahito Nakayama, Hideharu Takezawa
  • Publication number: 20200020924
    Abstract: A positive electrode is disclosed including a positive electrode collector containing aluminum, a positive electrode mixture layer containing a positive electrode active substance constituted from a lithium transition metal oxide, and a protective layer provided between the positive electrode collector and the positive electrode mixture layer. The protective layer contains inorganic compound particles and a conductive material, and has a recessed structure wherein the positive electrode mixture layer is recessed into the protective layer.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideharu Takezawa, Daisuke Furusawa, Yuji Oura, Takahiro Takahashi, Takahito Nakayama, Tomoki Shiozaki
  • Publication number: 20170018342
    Abstract: An R-T-B based sintered magnet has a composition represented by the following formula (1) which satisfies the following inequality expressions (2) to (9): uRwBxGazAlvCoqTigFejM??(1) (R is at least one of rare-earth elements and indispensably includes Nd, M is an element except for R, B, Ga, Al, Co, Ti, and Fe, and u, w, x, z, v, q, g, and j are expressed in terms of % by mass). 29.0?u?32.0??(2) (heavy rare-earth elements RH account for 10% by mass or less of the R-T-B based sintered magnet) 0.93?w?1.00??(3) 0.3?x?0.8??(4) 0.05?z?0.5??(5) 0?v?3.0??(6) 0.15?q?0.28??(7) 60.42?g?69.57??(8) 0?j?2.0??(9) and satisfies other requirements.
    Type: Application
    Filed: February 27, 2015
    Publication date: January 19, 2017
    Applicant: HITACHI METALS, LTD.
    Inventors: Tomoki FUKAGAWA, Noriyuki NOZAWA, Takeshi NISHIUCHI, Daisuke FURUSAWA, Shinichiroh SAKASHITA
  • Patent number: 6434580
    Abstract: A client computer 100 enters with a draft preparation means 100 a piece of draft data prepared by an inventor, and transmits with a draft uploading means 103 the draft data and a piece of invention report information to a server computer 300. The server computer 300 receives with a draft receiving means 301 the transmitted pieces of draft data and invention report information, and enters them with a draft entry means 302 into a specification file 303, the data and the information being associated with each other. A client computer 200 transfers with a draft downloading means 201 the draft data entered in the server computer 300, revises with a draft revision means 202 the draft data, and transmits with a draft uploading means 203 the revised draft data to the server computer 300.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: August 13, 2002
    Assignee: NEC Corporation
    Inventors: Kouichi Takano, Akira Shiramizu, Hiroyuki Kubo, Fumio Imoto, Kouichi Shimamura, Daisuke Furusawa