Patents by Inventor Hitoshi Abe

Hitoshi Abe 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: 11127844
    Abstract: A semiconductor device includes: a drift layer; a mesa region that is interposed between adjacent trenches on the drift layer; a gate electrode buried in each trench through a gate insulating film; a base region of buried in the mesa region; a plurality of emitter regions that are periodically buried in a surface layer portion of the base region along a longer direction of the trench; and contact regions that are alternately buried in the longer direction together with the emitter regions such that each emitter region is interposed between the contact regions, are deeper than the emitter region, and extend immediately below the emitter region so as to be separated from each other, a contact-region contact-width in the longer direction defined in a surface of the contact region being less than an emitter-region contact-width in the longer direction defined in a surface of the emitter region.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 21, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Hitoshi Abe, Hiroshi Miyata, Hidenori Takahashi, Seiji Noguchi, Naoya Shimada
  • Patent number: 11072268
    Abstract: There is provided a head-rest of a car sheet which is configured to includes: a skin configured to cover a surface of the head-rest; a foamed material filled in the head-rest covered by the skin; and a stay extending to an outside from the skin in which the foamed material is filled, wherein the head-rest has a gate shape by indenting a center portion of a lower surface of the head-rest, and a groove portion is formed at the indented center portion of the gate shape by making end portions of the skin abut against each other, and members which are softer than the skin are seamed to the respective end portions of the skin which abut against each other in the groove portion.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: July 27, 2021
    Assignee: TACHI-S CO., LTD.
    Inventors: Masaki Tsukada, Kouichi Moroi, Hitoshi Abe, Takafumi Kojima, Satoshi Hashimoto, Naoyuki Makita
  • Publication number: 20210134789
    Abstract: Between a source electrode (25) of a main device (24) and a current sensing electrode (22) of a current detection device (21), a resistor for detecting current is connected. Dielectric withstand voltage of gate insulator (36) is larger than a product of the resistor and maximal current flowing through the current detection device (21) with reverse bias. A diffusion length of a p-body region (32) of the main device (24) is shorter than that of a p-body (31) of the current detection device (21). A curvature radius at an end portion of the p-body region (32) of the main device (24) is smaller than that of the p-body (31) of the current detection device (21). As a result, at the inverse bias, electric field at the end portion of the p-body region (32) of the main device (24) becomes stronger than that of the p-body region (31) of the current detection device (21). Consequently, avalanche breakdown tends to occur earlier in the main device 24 than the current detection device (21).
    Type: Application
    Filed: January 7, 2021
    Publication date: May 6, 2021
    Applicants: FUJI ELECTRIC CO., LTD., DENSO CORPORATION
    Inventors: Seiji Momota, Hitoshi Abe, Takashi Shiigi, Takeshi Fujii, Koh Yoshikawa, Tetsutaro Imagawa, Masaki Koyama, Makoto Asai
  • Patent number: 10966862
    Abstract: An ophthalmic laser treatment apparatus for generating plasma by focusing a treatment laser beam to treat a treatment target portion of a patient's eye with the plasma includes: an irradiation optical system configured to irradiate the treatment laser beam to the patient's eye; a position adjusting unit configured to adjust a focusing position of the treatment laser beam in an optical axis direction with respect to a predetermined focusing reference position; an energy adjusting unit configured to adjust irradiation energy of the treatment laser beam; a storage unit configured to store evaluation information to evaluate a permissible combination of the focusing position and the irradiation energy with respect to the focusing position; and an evaluation unit configured to evaluate a combination of the focusing position adjusted by the position adjusting unit and the irradiation energy adjusted by the energy adjusting unit based on the evaluation information.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: April 6, 2021
    Assignee: NIDEK CO., LTD.
    Inventors: Hitoshi Abe, Seiki Tomita, Masato Kawai
  • Patent number: 10950717
    Abstract: In a surface layer of a rear surface of the semiconductor substrate, an n+-type cathode region and a p-type cathode region are each selectively provided. The n+-type cathode region and the p-type cathode region constitute a cathode layer and are adjacent to each other along a direction parallel to the rear surface of the semiconductor substrate. The n+-type cathode region and the p-type cathode region are in contact with a cathode electrode. In an n?-type drift layer, plural n-type FS layers are provided at differing depths deeper from the rear surface of the semiconductor substrate than is the cathode layer. With such configuration, in a diode, a tradeoff relationship of forward voltage reduction and reverse recovery loss reduction may be improved and soft recovery may be realized.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: March 16, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Masaki Tamura, Hitoshi Abe, Takeshi Fujii
  • Patent number: 10916541
    Abstract: Between a source electrode (25) of a main device (24) and a current sensing electrode (22) of a current detection device (21), a resistor for detecting current is connected. Dielectric withstand voltage of gate insulator (36) is larger than a product of the resistor and maximal current flowing through the current detection device (21) with reverse bias. A diffusion length of a p-body region (32) of the main device (24) is shorter than that of a p-body (31) of the current detection device (21). A curvature radius at an end portion of the p-body region (32) of the main device (24) is smaller than that of the p-body (31) of the current detection device (21). As a result, at the inverse bias, electric field at the end portion of the p-body region (32) of the main device (24) becomes stronger than that of the p-body region (31) of the current detection device (21). Consequently, avalanche breakdown tends to occur earlier in the main device 24 than the current detection device (21).
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 9, 2021
    Assignees: FUJI ELECTRIC CO., LTD., DENSO CORPORATION
    Inventors: Seiji Momota, Hitoshi Abe, Takashi Shiigi, Takeshi Fujii, Koh Yoshikawa, Tetsutaro Imagawa, Masaki Koyama, Makoto Asai
  • Patent number: 10910485
    Abstract: In a surface layer of a rear surface of the semiconductor substrate, an n+-type cathode region and a p-type cathode region are each selectively provided. The n+-type cathode region and the p-type cathode region constitute a cathode layer and are adjacent to each other along a direction parallel to the rear surface of the semiconductor substrate. The n+-type cathode region and the p-type cathode region are in contact with a cathode electrode. In an n?-type drift layer, plural n-type FS layers are provided at differing depths deeper from the rear surface of the semiconductor substrate than is the cathode layer. With such configuration, in a diode, a tradeoff relationship of forward voltage reduction and reverse recovery loss reduction may be improved and soft recovery may be realized.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: February 2, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Masaki Tamura, Hitoshi Abe, Takeshi Fujii
  • Patent number: 10889878
    Abstract: An alloy material includes: a composition, in a composition range of a ternary alloy of silver (Ag), palladium (Pd), and copper (Cu), the composition containing 20 to 30 wt % of Ag, 35 to 55 wt % of Pd, and 20 to 40 wt % of Cu. The composition as a base is added with tin (Sn) in a range of 0.5 to 2.5 wt %, further added with any one of or a combination of cobalt (Co), chromium (Cr), and zinc (Zn) in a range of 0.1 to 1.0 wt %, and added with 0.01 to 0.1 wt % of either one of or a combination of iridium (Ir) and ruthenium (Ru).
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 12, 2021
    Assignees: NHK Spring Co., Ltd., YAMAKIN CO., LTD.
    Inventors: Toshio Kazama, Yoshihisa Tani, Satoshi Shoji, Teruo Anraku, Masayuki Ainoya, Tomohiro Kubota, Kotaro Toyotake, Hitoshi Abe
  • Patent number: 10847641
    Abstract: Among trenches disposed in a striped-shape parallel to a front surface of a semiconductor substrate, a gate electrode at a gate potential is provided in a gate trench, via a gate insulating film; and in a dummy trench, a dummy gate electrode at an emitter electric potential is provided, via a dummy gate insulating film. Among mesa regions, in a first mesa region functioning as a MOS gate, a first p-type base region is provided in a surface region overall. In a second mesa region not functioning as a MOS gate, a second p-type base region is selectively provided at a predetermined interval, along a first direction. At least one of the trenches on each side of a mesa region is a gate trench and at at least one side wall of the gate trench, a MOS gate is driven. As a result, the ON voltage may be reduced.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: November 24, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Hitoshi Abe, Takeshi Fujii, Tomoyuki Obata
  • Patent number: 10759315
    Abstract: A vehicle seat is provided which includes a protruding corner formed by joining a first surface and a second surface. The protruding corner includes a pad, a surface cover covering a surface of the pad, and a contour defining plate that is provided on a back side of the surface cover at a position corresponding to the second surface of the protruding corner, the contour defining plate defining the contour of the protruding corner. The contour defining plate has a first edge arranged along a top portion of the protruding corner and a second edge different from the first edge, the contour defining plate not being fixed to the surface cover at the first edge, but fixed to the surface cover at the second edge.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: September 1, 2020
    Assignee: Tachi-S Co., Ltd.
    Inventor: Hitoshi Abe
  • Publication number: 20200247293
    Abstract: There is provided a head-rest of a car sheet which is configured to includes: a skin configured to cover a surface of the head-rest; a foamed material filled in the head-rest covered by the skin; and a stay extending to an outside from the skin in which the foamed material is filled, wherein the head-rest has a gate shape by indenting a center portion of a lower surface of the head-rest, and a groove portion is formed at the indented center portion of the gate shape by making end portions of the skin abut against each other, and members which are softer than the skin are seamed to the respective end portions of the skin which abut against each other in the groove portion.
    Type: Application
    Filed: December 30, 2019
    Publication date: August 6, 2020
    Inventors: Masaki TSUKADA, Kouichi MOROI, Hitoshi ABE, Takafumi KOJIMA, Satoshi HASHIMOTO, Naoyuki MAKITA
  • Publication number: 20190308535
    Abstract: A vehicle seat is provided which includes a protruding corner formed by joining a first surface and a second surface. The protruding corner includes a pad, a surface cover covering a surface of the pad, and a contour defining plate that is provided on a back side of the surface cover at a position corresponding to the second surface of the protruding corner, the contour defining plate defining the contour of the protruding corner. The contour defining plate has a first edge arranged along a top portion of the protruding corner and a second edge different from the first edge, the contour defining plate not being fixed to the surface cover at the first edge, but fixed to the surface cover at the second edge.
    Type: Application
    Filed: March 5, 2019
    Publication date: October 10, 2019
    Applicant: Tachi-S Co., Ltd.
    Inventor: Hitoshi Abe
  • Patent number: 10357397
    Abstract: A laser treatment apparatus configured to emit laser light onto a tissue of a patient's eye, the laser treatment apparatus includes: a laser scanner configured to scan laser light emitted from a laser light source and switch a position of the tissue onto which laser light is emitted; a processor; and memory storing computer readable instructions, which are executed by the processor, causing the laser treatment apparatus to: (a) emit the laser light onto a first spot; (b) stop emitting the laser light onto the first spot for a stop time; (c) emit the laser light onto at least one second spot other than the first spot during the stop time; (d) emit the laser light onto the first spot again after the stop time elapses; and repeat (b), (c) and (d) several times to execute intermittent irradiation treatment onto a plurality of spots multiple times.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: July 23, 2019
    Assignee: NIDEK CO., LTD.
    Inventor: Hitoshi Abe
  • Patent number: 10308149
    Abstract: A vehicle seat includes: a pad including: a first pad part; a second pad part; a step portion formed along at least a part of the boundary; and a groove portion extending from the step portion into between the first and second pad parts over the whole length of the step portion; and a trim cover formed by sewing multiple skin pieces together, the skin pieces including: a first body configured to cover the surface of the first pad part following the surface of the step portion; a first gore configured to cover the surface of the step portion; a second body configured to cover the surface of the second pad part following the surface of the step portion; and a second gore jointed to the second body, wherein an edge of the first gore and an edge of the second gore are respectively stored in the groove portion.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: June 4, 2019
    Assignee: TACHI-S CO., LTD.
    Inventors: Hitoshi Abe, Takahiko Suzuki
  • Patent number: 10239428
    Abstract: The vehicle seat is configured to improve child seat mountability, and to prevent deterioration in appearance design when the child seat is demounted. The vehicle seat includes an anchor storage recess formed in a pad that constitutes the seat for storing an anchor to be engaged with an engagement member attached to a child seat. The anchor storage recess is covered with a skin material having a slit. The slit has an inverse T-like shape.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: March 26, 2019
    Assignee: TACHI-S CO., LTD.
    Inventors: Keigo Yamauchi, Kouichi Moroi, Hitoshi Abe, Kengo Kataoka, Makoto Nomura
  • Publication number: 20190067462
    Abstract: In a surface layer of a rear surface of the semiconductor substrate, an n+-type cathode region and a p-type cathode region are each selectively provided. The n+-type cathode region and the p-type cathode region constitute a cathode layer and are adjacent to each other along a direction parallel to the rear surface of the semiconductor substrate. The n+-type cathode region and the p-type cathode region are in contact with a cathode electrode. In an n?-type drift layer, plural n-type FS layers are provided at differing depths deeper from the rear surface of the semiconductor substrate than is the cathode layer. With such configuration, in a diode, a tradeoff relationship of forward voltage reduction and reverse recovery loss reduction may be improved and soft recovery may be realized.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Masaki TAMURA, Hitoshi ABE, Takeshi FUJII
  • Publication number: 20190067463
    Abstract: Among trenches disposed in a striped-shape parallel to a front surface of a semiconductor substrate, a gate electrode at a gate potential is provided in a gate trench, via a gate insulating film; and in a dummy trench, a dummy gate electrode at an emitter electric potential is provided, via a dummy gate insulating film. Among mesa regions, in a first mesa region functioning as a MOS gate, a first p-type base region is provided in a surface region overall. In a second mesa region not functioning as a MOS gate, a second p-type base region is selectively provided at a predetermined interval, along a first direction. At least one of the trenches on each side of a mesa region is a gate trench and at at least one side wall of the gate trench, a MOS gate is driven. As a result, the ON voltage may be reduced.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Inventors: Hitoshi ABE, Takeshi Fujii, Tomoyuki Obata
  • Patent number: 10144357
    Abstract: A seat cover includes: a surface member; and a pocket including: a bag part arranged on a back surface side of the surface member and sewn on a folded portion of the surface member folded toward the back surface side along an edge of a pocket opening; a bead part interposed between the bag part and the folded portion extending along at least one of a pair of longitudinal edges of the pocket opening, sewn on the folded portion and the bag part, and arranged to protruding into the pocket opening; and a core member inserted into the bead part, wherein: the bead part and the core member respectively include extension portions extending beyond a pair of lateral edges of the pocket opening in a longitudinal direction of the pocket opening; and the extension portions of the bead part and the core member are fixed to each other.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: December 4, 2018
    Assignee: TACHI-S CO., LTD.
    Inventor: Hitoshi Abe
  • Patent number: 10113509
    Abstract: In an automotive carburetor, the time delay in the response of the engine to the change in the cross sectional area of the air passage is minimized, and a high level of freedom in selecting the communication cross section area of the air passage and the air fuel ratio for the given load of the engine. The carburetor (1) comprises a fuel passage (13) including a fuel nozzle (16) for supplying fuel to the intake passage, a first air passage (14) communicating with the fuel passage to supply air to the fuel passage, a variable communication unit (21, 41) provided in a part of the first air passage and moveable between an open position for communicating the first air passage and a closed position for shutting off the first air passage and a switch mechanism (22, 43) for moving the variable communication unit between the open position and the closed position in dependence on a load of the engine.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 30, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Koichi Sakurai, Masaki Ando, Eiichi Utsugi, Hitoshi Abe, Takashi Suzuki, Katsuya Tajima, Masayuki Fukuhara
  • Publication number: 20180105902
    Abstract: An alloy material includes: a composition, in a composition range of a ternary alloy of silver (Ag), palladium (Pd), and copper (Cu), the composition containing 20 to 30 wt % of Ag, 35 to 55 wt % of Pd, and 20 to 40 wt % of Cu. The composition as a base is added with tin (Sn) in a range of 0.5 to 2.5 wt %, further added with any one of or a combination of cobalt (Co), chromium (Cr), and zinc (Zn) in a range of 0.1 to 1.0 wt %, and added with 0.01 to 0.1 wt % of either one of or a combination of iridium (Ir) and ruthenium (Ru).
    Type: Application
    Filed: March 31, 2016
    Publication date: April 19, 2018
    Inventors: Toshio Kazama, Yoshihisa Tani, Satoshi Shoji, Teruo Anraku, Masayuki Ainoya, Tomohiro Kubota, Kotaro Toyotake, Hitoshi Abe