Patents by Inventor Wakiko SATO

Wakiko SATO 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: 11462339
    Abstract: A dielectric film may be exposed to an acid solution such as hydrochloric acid, nitric acid, or sulfuric acid during a wet process after film formation. The inventors have newly found that when a dielectric film includes Zr having a lower ionization tendency than Ti in a main component of a metal oxide expressed by a general formula (Ba, Ca)(Ti, Zr)O3 is provided and satisfies at least one between relationships such that degree of orientation of (100) plane is higher than degree of orientation of (110) plane, and degree of orientation of (111) plane is higher than degree of orientation of (110) plane in a film thickness direction, the dielectric film is less likely to be damaged during a wet process, and the resistance to a wet process is improved.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 4, 2022
    Assignee: TDK CORPORATION
    Inventors: Saori Takahashi, Masahito Furukawa, Masamitsu Haemori, Hiroki Uchiyama, Wakiko Sato, Hitoshi Saita
  • Patent number: 11445605
    Abstract: A printed wiring board and the like in which local deviations of characteristics of a bamse member using a liquid crystal polymer are reduced. A printed wiring board uses a liquid crystal polymer having wiring formed on at least one surface as a bamse member, in which the bamse member has a degree of crystal orientation of the liquid crystal polymer of 0.3 or less in a plane direction.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: September 13, 2022
    Assignee: TDK CORPORATION
    Inventors: Takaaki Morita, Seiko Komatsu, Seiichi Tajima, Wakiko Sato
  • Patent number: 11380482
    Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+?, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20?y?0.50, and 2/3?x/z?3/2.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 5, 2022
    Assignee: TDK CORPORATION
    Inventors: Shota Suzuki, Nobuyuki Okuzawa, Daisuke Hirose, Shirou Ootsuki, Wakiko Sato
  • Publication number: 20220059753
    Abstract: Provided is a dielectric thin film including a metal oxide. The metal oxide includes bismuth, sodium, barium, and titanium, at least a part of the metal oxide is a tetragonal crystal having a perovskite structure, and a (100) plane of at least a part of the tetragonal crystal is oriented in a normal direction do of a surface of the dielectric thin film 3.
    Type: Application
    Filed: September 11, 2019
    Publication date: February 24, 2022
    Applicants: TDK Corporation, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Yusuke SATO, Mirai ISHIDA, Wakiko SATO, Hiroshi FUNAKUBO, Takao SHIMIZU, Miyu HASEGAWA, Keisuke ISHIHAMA
  • Publication number: 20210238037
    Abstract: A capacitive element and a dielectric thin film having a small dielectric loss and a large relative permittivity, particularly at low frequencies. [Solution] This dielectric thin film includes an A-B—O—N oxynitride. When the A-B—O—N oxynitride is represented by the compositional formula AaBbOoNn, (o+n)/a<3.00 is satisfied.
    Type: Application
    Filed: August 27, 2019
    Publication date: August 5, 2021
    Applicant: TDK CORPORATION
    Inventors: Kumiko YAMAZAKI, Wakiko SATO, Junichi YAMAZAKI
  • Patent number: 10991510
    Abstract: A dielectric membrane may be exposed to an acid solution such as hydrochloric acid, nitric acid, or sulfuric acid during a wet process after membrane formation. The inventors have newly found that when a dielectric membrane includes Ca having a lower ionization tendency than Ba and Zr having a lower ionization tendency than Ti in a main component of a metal oxide expressed by a general formula (Ba, Ca)(Ti, Zr)O3 and satisfies at least one of degree of orientation of (100) plane>degree of orientation of (110) plane and degree of orientation of (111) plane>degree of orientation of (110) plane in a membrane thickness direction, the dielectric membrane is less likely to be damaged during a wet process, and the resistance to a wet process is improved.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: April 27, 2021
    Assignee: TDK CORPORATION
    Inventors: Saori Takahashi, Masahito Furukawa, Masamitsu Haemori, Hiroki Uchiyama, Wakiko Sato, Hitoshi Saita
  • Publication number: 20210012961
    Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+?, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20?y?0.50, and 2/3?x/z?3/2.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 14, 2021
    Applicant: TDK CORPORATION
    Inventors: Shota SUZUKI, Nobuyuki OKUZAWA, Daisuke HIROSE, Shirou OOTSUKI, Wakiko SATO
  • Publication number: 20210014966
    Abstract: A printed wiring board and the like in which local deviations of characteristics of a bamse member using a liquid crystal polymer are reduced. A printed wiring board uses a liquid crystal polymer having wiring formed on at least one surface as a bamse member, in which the bamse member has a degree of crystal orientation of the liquid crystal polymer of 0.3 or less in a plane direction.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 14, 2021
    Applicant: TDK CORPORATION
    Inventors: Takaaki MORITA, Seiko KOMATSU, Seiichi TAJIMA, Wakiko SATO
  • Publication number: 20200312484
    Abstract: This dielectric film is a dielectric film comprising an oxide having a perovskite structure. The oxide comprises (1) Bi, Na and Ti, (2) at least one of Ba and Ca, and (3) at least one element Ln selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb and Y. When ratios of the numbers of atoms of Bi, Ba and Ca to the total of the numbers of atoms of Bi, Na, Ba and Ca in the oxide are represented by XBi, XBa and XCa, respectively, the ratios satisfy 0.2?XBi/(XBa+XCa)?5.
    Type: Application
    Filed: March 14, 2020
    Publication date: October 1, 2020
    Applicant: TDK Corporation
    Inventors: Shirou OOTSUKI, Aiko TAKAHASHI, Wakiko SATO
  • Publication number: 20200105438
    Abstract: A dielectric film may be exposed to an acid solution such as hydrochloric acid, nitric acid, or sulfuric acid during a wet process after film formation. The inventors have newly found that when a dielectric film includes Zr having a lower ionization tendency than Ti in a main component of a metal oxide expressed by a general formula (Ba, Ca)(Ti, Zr)O3 is provided and satisfies at least one between relationships such that degree of orientation of (100) plane is higher than degree of orientation of (110) plane, and degree of orientation of (111) plane is higher than degree of orientation of (110) plane in a film thickness direction, the dielectric film is less likely to be damaged during a wet process, and the resistance to a wet process is improved.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicant: TDK CORPORATION
    Inventors: Saori TAKAHASHI, Masahito FURUKAWA, Masamitsu HAEMORI, Hiroki UCHIYAMA, Wakiko SATO, Hitoshi SAITA
  • Publication number: 20190304688
    Abstract: A dielectric membrane may be exposed to an acid solution such as hydrochloric acid, nitric acid, or sulfuric acid during a wet process after membrane formation. The inventors have newly found that when a dielectric membrane includes Ca having a lower ionization tendency than Ba and Zr having a lower ionization tendency than Ti in a main component of a metal oxide expressed by a general formula (Ba, Ca)(Ti, Zr)O3 and satisfies at least one of degree of orientation of (100) plane>degree of orientation of (110) plane and degree of orientation of (111) plane>degree of orientation of (110) plane in a membrane thickness direction, the dielectric membrane is less likely to be damaged during a wet process, and the resistance to a wet process is improved.
    Type: Application
    Filed: March 20, 2019
    Publication date: October 3, 2019
    Applicant: TDK CORPORATION
    Inventors: Saori TAKAHASHI, Masahito FURUKAWA, Masamitsu HAEMORI, Hiroki UCHIYAMA, Wakiko SATO, Hitoshi SAITA