Patents by Inventor Toru Ujiie

Toru Ujiie 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: 11887762
    Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 30, 2024
    Assignee: TDK CORPORATION
    Inventors: Satoko Mori, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Patent number: 11798719
    Abstract: A soft magnetic metal powder having soft magnetic metal particles, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part, a second coating part, and a third coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Si as a main component, the second coating part includes oxides of Fe as a main component, and the third coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: October 24, 2023
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Patent number: 11763969
    Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 19, 2023
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Publication number: 20190279798
    Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.
    Type: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: TDK CORPORATION
    Inventors: Satoko MORI, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Takuma NAKANO, Seigo TOKORO, Shota OTSUKA, Toru UJIIE, Kentaro MORI
  • Publication number: 20190279802
    Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.
    Type: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: TDK Corporation
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Publication number: 20190279801
    Abstract: A soft magnetic metal powder having soft magnetic metal particles, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part, a second coating part, and a third coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Si as a main component, the second coating part includes oxides of Fe as a main component, and the third coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
    Type: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Satoko MORI, Takuma NAKANO, Seigo TOKORO, Shota OTSUKA, Toru UJIIE, Kentaro MORI
  • Publication number: 20110115324
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter.
    Type: Application
    Filed: December 9, 2010
    Publication date: May 19, 2011
    Applicant: SONY CORPORATION
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Patent number: 7073946
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: July 11, 2006
    Assignee: Sony Corporation
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Patent number: 7044640
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: May 16, 2006
    Assignee: Sony Corporation
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Patent number: 7011449
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: March 14, 2006
    Assignee: Sony Corporation
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Publication number: 20050265641
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Application
    Filed: July 21, 2005
    Publication date: December 1, 2005
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Publication number: 20050254736
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Application
    Filed: July 21, 2005
    Publication date: November 17, 2005
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
  • Publication number: 20040028299
    Abstract: A bearing unit is provided which includes a shaft (51) to support rotatably, radial bearing (55) to support the shaft (51) circumferentially, a thrust bearing (66) to support the shaft (51) in the direction of thrusting, and a housing (56) having the radial bearing (55) and thrust bearing (66) disposed therein and in which a viscous fluid (57) is filled. The housing (56) has a sealed structure except for a shaft insertion hole (65) formed therein and through which the shaft 51 is introduced. Between the outer surface of the shaft (51) and the inner surface of the shaft insertion hole (65), there is defined a gap (69) having a sufficient width to prevent the viscous fluid (57) filled in the housing (56) from leaking out of the latter. The housing (56) is formed as a one-piece structure by molding a synthetic resin.
    Type: Application
    Filed: May 15, 2003
    Publication date: February 12, 2004
    Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie