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).
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Patent number: 11887762Abstract: 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: GrantFiled: March 8, 2019Date of Patent: January 30, 2024Assignee: TDK CORPORATIONInventors: Satoko Mori, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
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Patent number: 11798719Abstract: 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: GrantFiled: March 8, 2019Date of Patent: October 24, 2023Assignee: TDK CORPORATIONInventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
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Patent number: 11763969Abstract: 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: GrantFiled: March 8, 2019Date of Patent: September 19, 2023Assignee: TDK CORPORATIONInventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
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Publication number: 20190279798Abstract: 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: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: TDK CORPORATIONInventors: Satoko MORI, Hiroyuki MATSUMOTO, Kenji HORINO, Kazuhiro YOSHIDOME, Takuma NAKANO, Seigo TOKORO, Shota OTSUKA, Toru UJIIE, Kentaro MORI
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Publication number: 20190279802Abstract: 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: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: TDK CorporationInventors: Kazuhiro YOSHIDOME, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
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Publication number: 20190279801Abstract: 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: ApplicationFiled: March 8, 2019Publication date: September 12, 2019Applicant: TDK CORPORATIONInventors: Kazuhiro YOSHIDOME, Hiroyuki MATSUMOTO, Kenji HORINO, Satoko MORI, Takuma NAKANO, Seigo TOKORO, Shota OTSUKA, Toru UJIIE, Kentaro MORI
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Publication number: 20110115324Abstract: 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: ApplicationFiled: December 9, 2010Publication date: May 19, 2011Applicant: SONY CORPORATIONInventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Patent number: 7073946Abstract: 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: GrantFiled: July 21, 2005Date of Patent: July 11, 2006Assignee: Sony CorporationInventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Patent number: 7044640Abstract: 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: GrantFiled: July 21, 2005Date of Patent: May 16, 2006Assignee: Sony CorporationInventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Patent number: 7011449Abstract: 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: GrantFiled: September 12, 2002Date of Patent: March 14, 2006Assignee: Sony CorporationInventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Publication number: 20050265641Abstract: 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: ApplicationFiled: July 21, 2005Publication date: December 1, 2005Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Publication number: 20050254736Abstract: 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: ApplicationFiled: July 21, 2005Publication date: November 17, 2005Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie
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Publication number: 20040028299Abstract: 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: ApplicationFiled: May 15, 2003Publication date: February 12, 2004Inventors: Yuji Shishido, Kenichiro Yazawa, Shinichiro Kato, Shuichi Kikuchi, Toru Ujiie