Patents by Inventor Yoshiyuki Mizoguchi
Yoshiyuki Mizoguchi 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: 11340316Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: GrantFiled: June 30, 2020Date of Patent: May 24, 2022Assignee: TDK CorporationInventors: Kunihiro Ueda, Yoshiyuki Mizoguchi, Hiroshi Yamazaki, Suguru Watanabe
-
Patent number: 10859405Abstract: A sensor system according to an embodiment of the disclosure includes a physical quantity distribution generation source configured to generate a distribution of a physical quantity, and a plurality of sensor packages including respective sensor chips configured to detect the physical quantity. In a plane including the sensor packages, central positions of the respective sensor chips are shifted in directions from central positions of the respective sensor packages toward a central position of the distribution of the physical quantity, and distances from the central position of the distribution of the physical quantity to the central positions of the respective sensor chips of the respective sensor packages are substantially equal to each other.Type: GrantFiled: November 27, 2018Date of Patent: December 8, 2020Assignee: TDK CORPORATIONInventors: Naoki Ohta, Yoshiyuki Mizoguchi
-
Publication number: 20200348373Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: ApplicationFiled: June 30, 2020Publication date: November 5, 2020Inventors: Kunihiro UEDA, Yoshiyuki MIZOGUCHI, Hiroshi YAMAZAKI, Suguru WATANABE
-
Patent number: 10739419Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: GrantFiled: July 31, 2018Date of Patent: August 11, 2020Assignee: TDK CorporationInventors: Kunihiro Ueda, Yoshiyuki Mizoguchi, Hiroshi Yamazaki, Suguru Watanabe
-
Patent number: 10689181Abstract: A mixing container for mixing multiple materials comprises a container body in which multiple storage chambers are formed in a storage part by a partition wall that is a raised portion of a wall surface forming the storage part, and a lid member attached to the container body such that the multiple storage chambers are separately sealed; the partition wall is configured to be deformable into a concave part recessed in a movement direction of the partition wall through movement in a direction from the lid member toward the container body with a circumferential edge of the storage part sealed to the lid member; and when the partition wall is deformed into the concave part, the multiple storage chambers are deformed into one storage chamber.Type: GrantFiled: March 12, 2018Date of Patent: June 23, 2020Assignee: KABUSHIKI KAISHA SHOFUInventors: Daisuke Hara, Naoya Kitada, Kenzou Yamamoto, Masahiro Kakimoto, Yoshiyuki Mizoguchi, Yuuta Yamada, Hirokazu Muranushi
-
Publication number: 20190162559Abstract: A sensor system according to an embodiment of the disclosure includes a physical quantity distribution generation source configured to generate a distribution of a physical quantity, and a plurality of sensor packages including respective sensor chips configured to detect the physical quantity. In a plane including the sensor packages, central positions of the respective sensor chips are shifted in directions from central positions of the respective sensor packages toward a central position of the distribution of the physical quantity, and distances from the central position of the distribution of the physical quantity to the central positions of the respective sensor chips of the respective sensor packages are substantially equal to each other.Type: ApplicationFiled: November 27, 2018Publication date: May 30, 2019Applicant: TDK CORPORATIONInventors: Naoki OHTA, Yoshiyuki MIZOGUCHI
-
Publication number: 20180364316Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: ApplicationFiled: July 31, 2018Publication date: December 20, 2018Inventors: Kunihiro UEDA, Yoshiyuki MIZOGUCHI, Hiroshi YAMAZAKI, Suguru WATANABE
-
Publication number: 20180265275Abstract: A mixing container for mixing multiple materials comprises a container body in which multiple storage chambers are formed in a storage part by a partition wall that is a raised portion of a wall surface forming the storage part, and a lid member attached to the container body such that the multiple storage chambers are separately sealed; the partition wall is configured to be deformable into a concave part recessed in a movement direction of the partition wall through movement in a direction from the lid member toward the container body with a circumferential edge of the storage part sealed to the lid member; and when the partition wall is deformed into the concave part, the multiple storage chambers are deformed into one storage chamber.Type: ApplicationFiled: March 12, 2018Publication date: September 20, 2018Inventors: Daisuke HARA, Naoya KITADA, Kenzou YAMAMOTO, Masahiro KAKIMOTO, Yoshiyuki MIZOGUCHI, Yuuta YAMADA, Hirokazu MURANUSHI
-
Patent number: 10073150Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: GrantFiled: January 15, 2016Date of Patent: September 11, 2018Assignee: TDK CorporationInventors: Kunihiro Ueda, Yoshiyuki Mizoguchi, Hiroshi Yamazaki, Suguru Watanabe
-
Patent number: 9810747Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements include at least magnetization direction change layers where a direction of magnetization is changed according to an external magnetic field. The width W1 of a magnetization direction change layer in an initial magnetization direction of the magnetization direction change layer of the first magnetoresistive effect element, and the width W2 of a magnetization direction change layer in an initial magnetization direction of the magnetization direction change layer of the second magnetoresistive effect element have a relationship shown by formula (1) below. Sensitivity of the first magnetoresistive effect element to the external magnetic field is higher than that of the second magnetoresistive effect element.Type: GrantFiled: January 15, 2016Date of Patent: November 7, 2017Assignee: TDK CorporationInventors: Kunihiro Ueda, Yoshiyuki Mizoguchi, Hiroshi Yamazaki, Suguru Watanabe
-
Publication number: 20160282146Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements are a plurality of layers of multilayer body including free layers where their magnetization directions vary due to the external magnetic field. Shapes of the first and second magnetoresistive effect elements viewed from the upper side in the lamination direction are different from each other. The first magnetoresistive effect element has a shape that can increase a slope of an output of the first magnetoresistive effect element relative to the change of the external magnetic field. The second magnetoresistive effect element has a shape that can decrease a slope of an output of the second magnetoresistive effect element relative to the change of the external magnetic field compared to the slope of the output of the first magnetoresistive effect element.Type: ApplicationFiled: January 15, 2016Publication date: September 29, 2016Inventors: Kunihiro UEDA, Yoshiyuki MIZOGUCHI, Hiroshi YAMAZAKI, Suguru WATANABE
-
Publication number: 20160282145Abstract: A magnetic sensor is provided with first and second magnetoresistive effect elements that can detect an external magnetic field. The first and second magnetoresistive effect elements include at least magnetization direction change layers where a direction of magnetization is changed according to an external magnetic field. The width W1 of a magnetization direction change layer in an initial magnetization direction of the magnetization direction change layer of the first magnetoresistive effect element, and the width W2 of a magnetization direction change layer in an initial magnetization direction of the magnetization direction change layer of the second magnetoresistive effect element have a relationship shown by formula (1) below. Sensitivity of the first magnetoresistive effect element to the external magnetic field is higher than that of the second magnetoresistive effect element.Type: ApplicationFiled: January 15, 2016Publication date: September 29, 2016Inventors: Kunihiro UEDA, Yoshiyuki MIZOGUCHI, Hiroshi YAMAZAKI, Suguru WATANABE
-
Patent number: 9389286Abstract: A magnetic sensor includes an MR element and a bias field generation unit. The MR element includes a magnetization pinned layer having a magnetization pinned in a direction parallel to an X direction, a free layer having a magnetization that varies depending on an X-direction component of an external magnetic field, and a nonmagnetic layer interposed between the magnetization pinned layer and the free layer. The magnetization pinned layer, the nonmagnetic layer and the free layer are stacked to be adjacent in a Y direction. The free layer receives an interlayer coupling magnetic field in a direction parallel to the X direction resulting from the magnetization pinned layer. The bias field generation unit applies a bias magnetic field to the free layer. The bias magnetic field includes a first component in a direction opposite to that of the interlayer coupling magnetic field and a second component in a Z direction.Type: GrantFiled: February 25, 2014Date of Patent: July 12, 2016Assignee: TDK CORPORATIONInventors: Hiroshi Yamazaki, Yoshiyuki Mizoguchi, Satoshi Abe, Homare Tokida, Toshiyuki Ayukawa
-
Patent number: 9244136Abstract: A magnetic sensor includes an MR element and a pair of magnets. The MR element includes a magnetization pinned layer having a magnetization pinned in a direction parallel to an X direction, a free layer having a magnetization that varies depending on an X-direction component of an external magnetic field, and a nonmagnetic layer interposed between the magnetization pinned layer and the free layer. The magnetization pinned layer, the nonmagnetic layer and the free layer are stacked to be adjacent in a Y direction. The free layer receives an interlayer coupling magnetic field in a direction parallel to the X direction resulting from the magnetization pinned layer. The pair of magnets applies a bias magnetic field to the free layer. The bias magnetic field includes a first component in a direction opposite to that of the interlayer coupling magnetic field and a second component in a Z direction.Type: GrantFiled: February 11, 2014Date of Patent: January 26, 2016Assignee: TDK CORPORATIONInventors: Hiroshi Yamazaki, Yoshiyuki Mizoguchi, Takahiro Imai, Satoshi Abe, Homare Tokida
-
Publication number: 20140292321Abstract: A magnetic sensor includes an MR element and a pair of magnets. The MR element includes a magnetization pinned layer having a magnetization pinned in a direction parallel to an X direction, a free layer having a magnetization that varies depending on an X-direction component of an external magnetic field, and a nonmagnetic layer interposed between the magnetization pinned layer and the free layer. The magnetization pinned layer, the nonmagnetic layer and the free layer are stacked to be adjacent in a Y direction. The free layer receives an interlayer coupling magnetic field in a direction parallel to the X direction resulting from the magnetization pinned layer. The pair of magnets applies a bias magnetic field to the free layer. The bias magnetic field includes a first component in a direction opposite to that of the interlayer coupling magnetic field and a second component in a Z direction.Type: ApplicationFiled: February 11, 2014Publication date: October 2, 2014Applicant: TDK CORPORATIONInventors: Hiroshi YAMAZAKI, Yoshiyuki MIZOGUCHI, Takahiro IMAI, Satoshi ABE, Homare TOKIDA
-
Publication number: 20140292322Abstract: A magnetic sensor includes an MR element and a bias field generation unit. The MR element includes a magnetization pinned layer having a magnetization pinned in a direction parallel to an X direction, a free layer having a magnetization that varies depending on an X-direction component of an external magnetic field, and a nonmagnetic layer interposed between the magnetization pinned layer and the free layer. The magnetization pinned layer, the nonmagnetic layer and the free layer are stacked to be adjacent in a Y direction. The free layer receives an interlayer coupling magnetic field in a direction parallel to the X direction resulting from the magnetization pinned layer. The bias field generation unit applies a bias magnetic field to the free layer. The bias magnetic field includes a first component in a direction opposite to that of the interlayer coupling magnetic field and a second component in a Z direction.Type: ApplicationFiled: February 25, 2014Publication date: October 2, 2014Applicant: TDK CORPORATIONInventors: Hiroshi YAMAZAKI, Yoshiyuki MIZOGUCHI, Satoshi ABE, Homare TOKIDA, Toshiyuki AYUKAWA
-
Patent number: 8015693Abstract: A method of forming a thin-film magnetic head comprises a lower magnetic pole layer forming step of forming a lower magnetic pole layer; a lower magnetic pole projection forming step of forming the lower magnetic pole layer with a lower magnetic pole projection; a gap layer forming step of laminating a nonmagnetic gap layer on the lower magnetic pole projection; and an upper magnetic pole forming step of forming an upper magnetic pole on the nonmagnetic gap layer. The lower magnetic pole projection forming step forms the lower magnetic pole projection by simultaneously etching an area including parts adjacent to a part to become the lower magnetic pole projection on both sides in a track width direction and a part adjacent to the part to become the lower magnetic pole projection on the side opposite from a medium-opposing surface in a surface of the lower magnetic pole layer.Type: GrantFiled: October 18, 2007Date of Patent: September 13, 2011Assignee: TDK CorporationInventors: Hiraku Hirabayashi, Yoshiyuki Mizoguchi
-
Patent number: 7924533Abstract: A multi-channel head includes a substrate, a plurality of write elements arranged in a track width direction above the substrate in a lamination direction, and a plurality of read elements arranged in the track width direction above the plurality of write elements in the lamination direction. At least one of the plurality of write elements is offset from the others in the lamination direction. All the plurality of read elements are located higher than an uppermost one of the plurality of write elements in the lamination direction.Type: GrantFiled: April 26, 2007Date of Patent: April 12, 2011Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.Inventors: Kazuhiko Maejima, Yoshiyuki Mizoguchi, Nobuya Oyama, Hiraku Hirabayashi, Hiroki Matsukuma, Naoto Matono
-
Patent number: 7911743Abstract: Provided is a multichannel thin-film magnetic head having a plurality of read head elements neighboring with each other, each of which includes shield layers having a desired stable magnetic-domain structure. The head comprises at least one read head part comprising a plurality of read head elements aligned in the track width direction, wherein each of the plurality of read head elements comprises a lower shield layer and an upper shield layer, and the at least one read head part comprises: a lower shield part comprising a plurality of the lower shield layers aligned in the track width direction; and an upper shield part comprising a plurality of the upper shield layers aligned in the track width direction, and wherein dummy shield layers are provided respectively on both sides of at least the lower shield part.Type: GrantFiled: September 4, 2007Date of Patent: March 22, 2011Assignee: TDK CorporationInventors: Nozomu Hachisuka, Yoshiyuki Mizoguchi, Hiroshi Yamazaki, Hideaki Sato
-
Patent number: 7872471Abstract: Provided is a method for testing a head element that enables proper evaluation of the head element based on a characteristic of the head element under high-temperature and high-stress conditions. The testing method can be performed on a thin-film magnetic head including a head element and a heating element capable of applying a heat and stress to the head element, or performed on a row bar or a substrate wafer on which a plurality of the head elements and a plurality of the heating elements are disposed. The testing method comprises the steps of: causing the heating element to generate heat to apply a heat and stress to the head element; and measuring a characteristic of the head element under the heat and stress to evaluate the head element.Type: GrantFiled: August 7, 2007Date of Patent: January 18, 2011Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.Inventors: Noboru Yamanaka, Soji Koide, Yoshiyuki Mizoguchi, Eric Cheuk Wing Leung, Chris Chiu Ming Leung, Leo Wai Kay Lau, Charles Kin Chiu Wong