Patents by Inventor Katsuya Kumagai

Katsuya Kumagai 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: 20230378031
    Abstract: A semiconductor module includes a semiconductor chip, a resin molded part, and a connection terminal electrically connected to the semiconductor chip. The connection terminal includes an internal terminal sealed in the resin molded part, an external terminal, and a tie bar remaining portion. The internal terminal is extended in a first direction and exposed from an opening portion of the resin molded part. The external terminal is connected to the internal terminal through the opening portion, and projected outside the resin molded part. The tie bar remaining portion extends from the internal terminal in a second direction intersecting the first direction and projects outside the resin molded part to provide a tie bar projecting portion. The connection terminal has a groove portion covered with the resin molded part, between an exposed portion of the internal terminal and the tie bar projecting portion.
    Type: Application
    Filed: March 10, 2023
    Publication date: November 23, 2023
    Inventors: Hiroshi ISHINO, Katsuya KUMAGAI, Masaru NARIKAWA
  • Patent number: 11557563
    Abstract: A sintered member is provided between a semiconductor chip and a terminal. The sintered member is made of a sinter sheet by heating and pressing the same. The semiconductor chip is connected to the terminal via the sintered member. Convex portions are formed at a front-side surface of the semiconductor chip. Concave portions, each of which has such a shape corresponding to that of each convex portion of the semiconductor chip, are formed at a surface of the sintered member facing to the semiconductor chip.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: January 17, 2023
    Assignee: DENSO CORPORATION
    Inventors: Tomohito Iwashige, Katsuya Kumagai, Takeshi Endoh
  • Publication number: 20220415765
    Abstract: A semiconductor module includes a resin molded part encapsulating a semiconductor chip, a first terminal having a plate shape, and a second terminal having a plate shape. The first terminal and the second terminal are disposed on top of the other in a thickness direction. The first terminal is exposed from a first surface of the resin molded part, and the second terminal is projected from a second surface of the resin molded part to an outside of the resin molded part, the second surface being different from the first surface from which the first terminal is exposed.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 29, 2022
    Inventors: HIROSHI ISHINO, HIROKAZU SAMPEI, KATSUYA KUMAGAI, KOJI DOI
  • Publication number: 20200402944
    Abstract: A sintered member is provided between a semiconductor chip and a terminal. The sintered member is made of a sinter sheet by heating and pressing the same. The semiconductor chip is connected to the terminal via the sintered member. Convex portions are formed at a front-side surface of the semiconductor chip. Concave portions, each of which has such a shape corresponding to that of each convex portion of the semiconductor chip, are formed at a surface of the sintered member facing to the semiconductor chip.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 24, 2020
    Inventors: Tomohito IWASHIGE, Katsuya KUMAGAI, Takeshi ENDOH
  • Patent number: 5525444
    Abstract: An alkaline secondary battery is capable of inhibiting an increase of internal pressure in the charging/discharging cycles and extending life of charging/discharging cycles. This secondary battery comprises, a case, a paste-type positive electrode accommodated in the case and essentially consisting of a conductive substrate filled with a paste containing an active material and a binder, a negative electrode accommodated in the case, a separator interposed between the positive electrode and the negative electrode, and an alkaline electrolyte accommodated in the case, wherein the binder in the positive electrode contains a copolymer consisting of a vinyl alcohol unit and a unit having COOX group, wherein X is an element selected from the group consisting of hydrogen, alkaline metals and alkaline earth metals.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: June 11, 1996
    Assignee: Toshiba Battery Co., Ltd.
    Inventors: Takeo Ito, Eiichi Wakai, Katsuya Kumagai, Kunihiko Miyamoto