Patents by Inventor Masaki Tsujimoto

Masaki Tsujimoto 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).

  • Publication number: 20250237678
    Abstract: There is provided a current sensor including: a conductor having a first terminal portion for inputting a current and a second terminal portion for outputting the current which are arranged on one side in a first axial direction, the second terminal portion being separated from the first terminal portion in a second axial direction intersecting the first axial direction, a turn portion which is arranged on another side in the first axial direction, a first body portion which connects one end of the turn portion and the first terminal portion, and a second body portion which is separated from the first body portion in the second axial direction, to connect another end of the turn portion and the second terminal portion; a magnetic sensor which is arranged on the conductor or near the conductor; and a package.
    Type: Application
    Filed: January 21, 2025
    Publication date: July 24, 2025
    Inventors: Masato INOUE, Ryuji NOBIRA, Masaki TSUJIMOTO, Toshiaki KAWASAKI
  • Publication number: 20250183589
    Abstract: A floating connector includes a movable housing accommodated in an accommodation portion of a stationary housing in a loosely fitted state and a terminal integrally formed of a single member. The terminal includes a first fixed portion fixed to a first fixing portion of the stationary housing, a second fixed portion fixed to a second fixing portion of the movable housing, a mating terminal fitting portion, and an elastic portion coupling the first fixed portion and the second fixed portion. The elastic portion is elastically deformable along with movement of the movable housing with respect to three orthogonal directions including a connector fitting direction.
    Type: Application
    Filed: November 27, 2024
    Publication date: June 5, 2025
    Applicant: J.S.T. MFG. CO., LTD.
    Inventors: Masaki TSUJIMOTO, Hideya OKAZAKI
  • Patent number: 12292460
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, and a signal processing IC are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed on a side surface of the encapsulating portion and is spaced apart from the conductor; and an element supporting portion that is comprised of a metal plate or a semiconductor substrate, supports the at least one magnetoelectric conversion element and a metal member on a surface on a same side as the first surface, and is spaced apart from the conductor.
    Type: Grant
    Filed: January 23, 2024
    Date of Patent: May 6, 2025
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Ken Tanaka, Masaki Tsujimoto
  • Publication number: 20250110155
    Abstract: A current sensor comprises a first lead frame, a signal processing IC, first and second magnetoelectric conversion elements, and a second lead frame that partially surrounds the first and second magnetoelectric conversion elements. In a plan view, the first and second magnetoelectric conversion elements may oppose each other with an intermediate portion, through which a current flows in a second direction that intersects with a first direction from the first magnetoelectric conversion element toward the second magnetoelectric conversion element, sandwiched therebetween. First wires may extend in a direction different from the second magnetoelectric conversion element side in the plan view, and be electrically connected to the signal processing IC without traversing the second lead frame. Second wires may extend in a direction different from the first magnetoelectric conversion element side in the plan view, and be electrically connected to the signal processing IC without traversing the second lead frame.
    Type: Application
    Filed: September 29, 2024
    Publication date: April 3, 2025
    Inventor: Masaki TSUJIMOTO
  • Patent number: 12153071
    Abstract: A current sensor is configured by at least one magnetoelectric conversion element, a conductor, and a signal processing IC being encapsulated by an encapsulating portion. The current sensor includes a pair of first lead terminals that is partially exposed outside of the encapsulating portion, is electrically connected to the conductor, inputs the measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor; and a supporting portion that supports the at least one magnetoelectric conversion element, the signal processing IC, and the metal member on a first surface, is separated from the conductor, and is separate from the metal member.
    Type: Grant
    Filed: December 25, 2023
    Date of Patent: November 26, 2024
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Masaki Tsujimoto, Takuya Ishida
  • Publication number: 20240322464
    Abstract: An electrical connector includes a housing and a contact having a bellows contact structure. The contact has a substantially rectangular parallelepiped frame body including an upper-surface portion, a lower-surface portion, and a pair of side surface portions facing each other therebetween. At one end of the substantially rectangular parallelepiped frame body in a longitudinal direction, a contact-spring portion for contacting with a mating terminal is provided. At the other end of the substantially rectangular parallelepiped frame body in the longitudinal direction, a fixing portion that is fixed to the housing is provided. The contact has an elastic structure that is included in the substantially rectangular parallelepiped frame body interposed between the contact-spring portion and the fixing portion. The elastic structure of the contact is segmented into the upper-surface portion, the pair of side-surface portions, and the lower-surface portion of the substantially rectangular parallelepiped frame body.
    Type: Application
    Filed: March 20, 2024
    Publication date: September 26, 2024
    Applicant: J.S.T. Mfg. Co., Ltd.
    Inventors: Masaki TSUJIMOTO, Hideya OKAZAKI
  • Publication number: 20240319232
    Abstract: A current sensor may include a first support portion and a first lead frame which is made of a material different from that of the first support portion. The current sensor may include: a signal processing IC which has a first surface supported by a first surface of the first support portion and is electrically connected to the first lead frame; at least one magnetoelectric conversion element which is configured separately from the signal processing IC, is mounted on a second surface on a side opposite to the first surface of the signal processing IC, and outputs, to the signal processing IC, a signal processed by the signal processing IC; and a second lead frame which has a second terminal portion, at least a part of which is arranged to face the second surface of the signal processing IC, and through which a measurement current flows.
    Type: Application
    Filed: March 21, 2024
    Publication date: September 26, 2024
    Inventors: Masaki TSUJIMOTO, Kenji KAI, Kenji SUZUKI
  • Publication number: 20240272206
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, a signal processing IC, an IC supporting portion, and an element supporting portion are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed outside the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; and a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor. The element supporting portion further supports the metal member on a surface on the same side as a first surface on which the IC supporting portion supports the signal processing IC.
    Type: Application
    Filed: April 23, 2024
    Publication date: August 15, 2024
    Inventor: Masaki TSUJIMOTO
  • Patent number: 12050236
    Abstract: A current sensor includes at least one magnetoelectric conversion element, a conductor that at least partially surrounds the at least one magnetoelectric conversion element in a plan view and through which a measurement current to be measured with the at least one magnetoelectric conversion element flows, an element supporting portion comprised of a semiconductor substrate, and supports the at least one magnetoelectric conversion element and the conductor on a first surface, a signal processing IC that processes a signal that is output from the at least one magnetoelectric conversion element, an encapsulating portion that encapsulates the at least one magnetoelectric conversion element, the conductor, and the signal processing IC, and a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion and is electrically connected to the conductor, inputs the measurement current to the conductor and outputs the measurement current from the conductor.
    Type: Grant
    Filed: August 18, 2023
    Date of Patent: July 30, 2024
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Ken Tanaka, Masaki Tsujimoto
  • Patent number: 12044707
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, and a signal processing IC are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed on a side surface of the encapsulating portion and is spaced apart from the conductor; and an element supporting portion that is comprised of a metal plate or a semiconductor substrate, supports the at least one magnetoelectric conversion element and a metal member on a surface on a same side as the first surface, and is spaced apart from the conductor.
    Type: Grant
    Filed: August 27, 2023
    Date of Patent: July 23, 2024
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Ken Tanaka, Masaki Tsujimoto
  • Publication number: 20240230723
    Abstract: A current sensor is configured by at least one magnetoelectric conversion element, a conductor, and a signal processing IC being encapsulated by an encapsulating portion. The current sensor includes a pair of first lead terminals that is partially exposed outside of the encapsulating portion, is electrically connected to the conductor, inputs the measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor; and a supporting portion that supports the at least one magnetoelectric conversion element, the signal processing IC, and the metal member on a first surface, is separated from the conductor, and is separate from the metal member.
    Type: Application
    Filed: December 25, 2023
    Publication date: July 11, 2024
    Inventors: Masaki TSUJIMOTO, Takuya ISHIDA
  • Publication number: 20240213714
    Abstract: Provided is an electrical connector capable of suppressing damage to a contact and facilitating insertion of a plug connector into an insertion opening. A base connector (10), which has an insertion opening (13a) into which a plug connector (2) is inserted, includes a pair of guide portions (14b) that are provided so as to be capable of protruding and retracting from both width-direction sides of the insertion opening (13a), and that guide both width-direction sides of the plug connector (2) that moves toward the insertion opening (13a).
    Type: Application
    Filed: November 30, 2023
    Publication date: June 27, 2024
    Applicant: J.S.T. Mfg. Co., Ltd.
    Inventor: Masaki TSUJIMOTO
  • Publication number: 20240168063
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, and a signal processing IC are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed on a side surface of the encapsulating portion and is spaced apart from the conductor; and an element supporting portion that is comprised of a metal plate or a semiconductor substrate, supports the at least one magnetoelectric conversion element and a metal member on a surface on a same side as the first surface, and is spaced apart from the conductor.
    Type: Application
    Filed: January 23, 2024
    Publication date: May 23, 2024
    Inventors: Ken TANAKA, Masaki TSUJIMOTO
  • Patent number: 11971432
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, a signal processing IC, an IC supporting portion, and an element supporting portion are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed outside the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; and a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor. The element supporting portion further supports the metal member on a surface on the same side as a first surface on which the IC supporting portion supports the signal processing IC.
    Type: Grant
    Filed: August 14, 2023
    Date of Patent: April 30, 2024
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Masaki Tsujimoto
  • Publication number: 20240133923
    Abstract: A current sensor is configured by at least one magnetoelectric conversion element, a conductor, and a signal processing IC being encapsulated by an encapsulating portion. The current sensor includes a pair of first lead terminals that is partially exposed outside of the encapsulating portion, is electrically connected to the conductor, inputs the measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor; and a supporting portion that supports the at least one magnetoelectric conversion element, the signal processing IC, and the metal member on a first surface, is separated from the conductor, and is separate from the metal member.
    Type: Application
    Filed: December 25, 2023
    Publication date: April 25, 2024
    Inventors: Masaki TSUJIMOTO, Takuya ISHIDA
  • Publication number: 20240110950
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, and a signal processing IC are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed on a side surface of the encapsulating portion and is spaced apart from the conductor; and an element supporting portion that is comprised of a metal plate or a semiconductor substrate, supports the at least one magnetoelectric conversion element and a metal member on a surface on a same side as the first surface, and is spaced apart from the conductor.
    Type: Application
    Filed: August 27, 2023
    Publication date: April 4, 2024
    Inventors: Ken TANAKA, Masaki TSUJIMOTO
  • Publication number: 20240110953
    Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, a signal processing IC, an IC supporting portion, and an element supporting portion are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed outside the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; and a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor. The element supporting portion further supports the metal member on a surface on the same side as a first surface on which the IC supporting portion supports the signal processing IC.
    Type: Application
    Filed: August 14, 2023
    Publication date: April 4, 2024
    Inventor: Masaki TSUJIMOTO
  • Publication number: 20240110949
    Abstract: A current sensor includes at least one magnetoelectric conversion element, a conductor that at least partially surrounds the at least one magnetoelectric conversion element in a plan view and through which a measurement current to be measured with the at least one magnetoelectric conversion element flows, an element supporting portion comprised of a semiconductor substrate, and supports the at least one magnetoelectric conversion element and the conductor on a first surface, a signal processing IC that processes a signal that is output from the at least one magnetoelectric conversion element, an encapsulating portion that encapsulates the at least one magnetoelectric conversion element, the conductor, and the signal processing IC, and a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion and is electrically connected to the conductor, inputs the measurement current to the conductor and outputs the measurement current from the conductor.
    Type: Application
    Filed: August 18, 2023
    Publication date: April 4, 2024
    Inventors: Ken TANAKA, Masaki TSUJIMOTO
  • Patent number: 11867728
    Abstract: A current sensor is configured by at least one magnetoelectric conversion element, a conductor, and a signal processing IC being encapsulated by an encapsulating portion. The current sensor includes a pair of first lead terminals that is partially exposed outside of the encapsulating portion, is electrically connected to the conductor, inputs the measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed outside the encapsulating portion and is spaced apart from the conductor; and a supporting portion that supports the at least one magnetoelectric conversion element, the signal processing IC, and the metal member on a first surface, is separated from the conductor, and is separate from the metal member.
    Type: Grant
    Filed: August 14, 2023
    Date of Patent: January 9, 2024
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Masaki Tsujimoto, Takuya Ishida
  • Patent number: 8968013
    Abstract: A modular jack is composed of: a base connector installed on a printed circuit board, and a socket connector with a parallel crank mechanism at an extremity thereof, the parallel crank mechanism being slidably connected to the base connector and switching an upper housing between a raised state and a lowered state. When the upper housing is laid toward the front side of the socket connector, the socket connector can be housed inside the casing and both faces of the upper housing, the socket housing, and the base housing are made in a flat plate-like shape. This contributes to height reduction in the modular jack. The socket connector is configured such that, when the upper housing is pulled out from a side face of the casing and raised outside the casing, a plug can be electrically connected to the socket connector.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: March 3, 2015
    Assignee: J.S.T. Mfg. Co., Ltd.
    Inventors: Akihiro Tochi, Masaki Tsujimoto