Patents by Inventor Taichi Itoh

Taichi Itoh 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: 20230087499
    Abstract: A semiconductor unit includes a plurality of semiconductor chips, and an insulated circuit board including an insulating plate having, in a plan view of the semiconductor unit, a rectangular shape surrounded by first and second sides opposite to each other and third and fourth sides perpendicular to the first and second sides and opposite to each other, an output circuit pattern and an input circuit pattern on a front surface of the insulating plate. The output and input circuit patterns each extend from the third side to the fourth side, and disposed in this order side by side in a main current direction that is a direction from the first side toward the second side. The plurality of semiconductor chips are bonded to the input circuit pattern at an area extending from the third side to the fourth side and including a center of the third and fourth sides.
    Type: Application
    Filed: November 25, 2022
    Publication date: March 23, 2023
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi ITOH
  • Publication number: 20220399241
    Abstract: A semiconductor device includes first and second conductive parts, a first bonding wire connecting the first and second conductive parts and having a non-flat portion between opposite ends thereof so that a portion between the opposite ends is away from the first and second conductive parts, a case having a housing space to accommodate the first and second conductive parts, including a sidewall having first to fourth lateral faces surrounding the housing space to form a rectangular shape in a plan view, and a cover disposed on the sidewall, a sealing member filling the case to seal the first bonding wire, and a first stress relaxer for relieving a stress in the first bonding wire. The first bonding wire extends from the second lateral face toward the fourth lateral face, and the first stress relaxer is positioned between the first bonding wire and the first lateral face.
    Type: Application
    Filed: April 26, 2022
    Publication date: December 15, 2022
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi ITOH
  • Publication number: 20220330429
    Abstract: A semiconductor device includes a semiconductor chip, an insulated circuit substrate including an insulating board and a circuit pattern on the insulating board electrically connected to the semiconductor chip, and a wiring member having a leg portion bonded to the circuit pattern. The leg portion includes a vertical portion, a first divided portion, and a second divided portion. The vertical portion extends in a vertical direction orthogonal to a plane of the circuit pattern, and has a split end provided at a side of the vertical portion at which the circuit pattern is disposed. The first divided portion extends from the split end in a first direction parallel to the plane of the circuit pattern and is bonded to the circuit pattern. The second divided portion extends from the split end in a second direction opposite the first direction and is bonded to the circuit pattern.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 13, 2022
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi ITOH
  • Publication number: 20220301954
    Abstract: A semiconductor module is provided with a semiconductor element, a case housing the semiconductor element, and an external terminal that electrically connects a main electrode of the semiconductor element to an external conductor. The external terminal projects out from a top face of the case and is bent at a right angle along the top face of the case. The case includes a protruding part that projects in a projection direction to a predetermined height above the top face of the case, and acts as a fulcrum for bending the external terminal, the protruding part having a slit that extends in a direction intersecting the projection direction to divide the protruding part.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 22, 2022
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi ITOH
  • Patent number: 11251101
    Abstract: A main ceramic circuit board on which a semiconductor element is arranged is separate from a sub-ceramic circuit board on which a connection terminal is arranged. Accordingly, heat generated by the semiconductor element is conducted via the main ceramic circuit board and a base plate arranged thereunder and the sub-ceramic circuit board to the connection terminal. That is to say, it is difficult to conduct heat from the semiconductor element to the connection terminal, compared with a case where the connection terminal and the semiconductor element are arranged over the same ceramic circuit board.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: February 15, 2022
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi Itoh
  • Patent number: 10692800
    Abstract: In a semiconductor device, the marginal edge of a resist member on the side closer to a substrate is between first and third positions on a metal base plate. The third position is directly under an outer side surface of a metal plate. The first position is outside the third position and is away from a second position on the metal base plate directly under an outer side surface of the electrical insulating board, by a distance calculated by dividing “the height from a principal surface of the metal base plate to the front surface of the electrical insulating board” by “the tangent of the contact angle of solder created by the marginal edge stopping solder flow”. This makes it possible to ensure sufficient insulation distances between conductive patterns and the solder and to reduce creepage distances of the conductive patterns over the electrical insulating board.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 23, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Taichi Itoh, Seiichi Takahashi
  • Publication number: 20200194329
    Abstract: A main ceramic circuit board on which a semiconductor element is arranged is separate from a sub-ceramic circuit board on which a connection terminal is arranged. Accordingly, heat generated by the semiconductor element is conducted via the main ceramic circuit board and a base plate arranged thereunder and the sub-ceramic circuit board to the connection terminal. That is to say, it is difficult to conduct heat from the semiconductor element to the connection terminal, compared with a case where the connection terminal and the semiconductor element are arranged over the same ceramic circuit board.
    Type: Application
    Filed: February 25, 2020
    Publication date: June 18, 2020
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Taichi ITOH
  • Publication number: 20180301397
    Abstract: In a semiconductor device, the marginal edge of a resist member on the side closer to a substrate is between first and third positions on a metal base plate. The third position is directly under an outer side surface of a metal plate. The first position is outside the third position and is away from a second position on the metal base plate directly under an outer side surface of the electrical insulating board, by a distance calculated by dividing “the height from a principal surface of the metal base plate to the front surface of the electrical insulating board” by “the tangent of the contact angle of solder created by the marginal edge stopping solder flow”. This makes it possible to ensure sufficient insulation distances between conductive patterns and the solder and to reduce creepage distances of the conductive patterns over the electrical insulating board.
    Type: Application
    Filed: February 28, 2018
    Publication date: October 18, 2018
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Taichi ITOH, Seiichi TAKAHASHI
  • Patent number: 6603567
    Abstract: A plurality of sheets of photofixed-recording medium are stacked on top of each other and stored in a cartridge. An EEPROM is attached to the cartridge. The EEPROM is connecting to a memory connection section. A central processing unit is connected to the memory connecting section. The central processing unit can write information to the EEPROM of the cartridge or read information therefrom. Access to EEPROM can be correctly obtained only when the cartridge is properly inserted into a printing apparatus.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: August 5, 2003
    Assignees: Panasonic Communications Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Taichi Itoh, Akira Takeoka, Hidemi Sasaki, Yutaka Aoki
  • Patent number: 6565194
    Abstract: To keep a toner (1) deposited on a transportation belt (21) from contact with a printhead (4) and prevent the clogging of toner passage holes (6) of the printhead (4), the toner (1) on a toner holding member (2) is ejected toward the transportation belt (21) through the toner passage holes (6) after the movement of the transportation belt (21) is initiated such that the cleaning of the toner passage holes (6) is initiated.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: May 20, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsutoshi Ogawa, Hiroshi Saegusa, Yoshitaka Kitaoka, Taichi Itoh
  • Publication number: 20030011652
    Abstract: The image forming apparatus includes a toner holding element 10 and a toner passage controller 4 having a plurality of toner passage holes 14, for controlling passage of toner 3. In order to prevent shortage of toner supply from the toner holding element 10 and form a high-quality image at a sufficient image density without producing thin white lines in such an image forming apparatus, the traveling speed of the toner holding element 10 is preset based on the traveling speed of an image receiving means 7 and at least one of the weight per unit area or the length in the scanning direction of the toner 3 that is applied to an image receiving means 7, the weight per unit area of the toner 3 held on the toner holding element 10 or the length of a toner-less region in the main scanning direction, and the number of pixels successively formed at different positions in the main scanning direction through the same toner passage hole 14.
    Type: Application
    Filed: June 20, 2002
    Publication date: January 16, 2003
    Inventors: Taichi Itoh, Takuya Kitahara, Yoshihiro Teshima, Akira Fukano, Masahiro Aizawa, Akira Kumon, Yoshitaka Kitaoka
  • Publication number: 20030001926
    Abstract: An image forming device including a toner holder 10 and a toner passage control device 4 including a plurality of toner passage holes 14 for controlling the passage of a toner 3, wherein a spacer member 22 arranged between the toner holder 10 and the toner passage control device 4 for maintaining the distance therebetween to be substantially constant has a predetermined surface roughness and a predetermined hardness while having a rigidity such that irregularities on the surface of the toner passage control device 4 are not transferred onto a toner layer 3a, so as to prevent the toner layer 3a on the toner holder 10 from being scratched and to form a high-quality image both in an initial stage of a recording operation and in a long-term use.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 2, 2003
    Inventors: Taichi Itoh, Katsutoshi Ogawa, Takuya Kitahara, Akira Kumon, Yoshitaka Kitaoka, Yasutaka Tamai, Ken Morishima, Kotaro Takada, Koichi Baba
  • Publication number: 20030001925
    Abstract: To keep a toner (1) deposited on a transportation belt (21) from contact with a printhead (4) and prevent the clogging of toner passage holes (6) of the printhead (4), the toner (1) on a toner holding member (2) is ejected toward the transportation belt (21) through the toner passage holes (6) after the movement of the transportation belt (21) is initiated such that the cleaning of the toner passage holes (6) is initiated.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 2, 2003
    Inventors: Katsutoshi Ogawa, Hiroshi Saegusa, Yoshitaka Kitaoka, Taichi Itoh
  • Patent number: 6412772
    Abstract: A cartridge comprises a shutter for opening and closing an opening portion formed on a ceiling plate of an upper side member. The shutter slides on an outer surface of the ceiling plate by attaching and detaching the cartridge. Lifter projections are projected on a back portion of a lifter provided in the cartridge. The lifter projections are projected to an outer section through an opening portion formed on a bottom plate of a lower side member. If the cartridge is put on the plane, the lifter projections are pressed to an interior, so that the lifter is pushed up. Thereby, a recording paper is pressed onto the back surface of the ceiling plate. As a result, a space of the cartridge is lessened, the flow of air from the outer section is reduced, and a variation in internal moisture is controlled.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: July 2, 2002
    Assignees: Matsushita Graphic Communication Systems, Inc., Fuji Photo Film Co., Ltd.
    Inventors: Taichi Itoh, Jun Kawai, Kazuhiro Tokuda, Michihiro Miyake
  • Patent number: 5051756
    Abstract: In a thermal printer for thermo-sensitive recording, a plurality of heating resistors are electrically divided into N units each having M heating resistors, and N driver circuits, N latch circuits and N shift registers which are interconnected in tandem are respectively provided in association with the N units of M heating resistors. Dot data signals and associated hysteresis correction signals are collectively applied to the shift registers so that a pulse for print data and a pulse for hysteresis correction data can be applied continuously for printing.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: September 24, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshikazu Nomura, Ryuji Nishiyama, Yoshikazu Tsuru, Taichi Itoh
  • Patent number: 4797690
    Abstract: The present invention relates to a ribbon feed mechanism for use in a heat transfer printer. The ribbon feed mechanism includes first, second, and third ribbon feed components fitted on a shaft, a friction plate mounted between the first and second ribbon feed components, a spring mounted between the second and third ribbon feed components, a cylinder which is in contact with the third ribbon feed component at one end thereof, and a ribbon feed presser for pressing the other end of the cylinder toward the third ribbon feed component. The rotational torque is always kept constant, and therefore no unmatching of colors occurs when the mechanism is applied to a printer.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: January 10, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaaki Takita, Yoshikazu Tsuru, Masaharu Ushihara, Taichi Itoh, Masumi Tanaka
  • Patent number: D884662
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: May 19, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Taichi Itoh, Hiroaki Ichikawa, Mitsuhiro Kakefu, Akio Yamano, Takuya Yamamoto