Patents by Inventor Toshio Ishizuka

Toshio Ishizuka 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: 11936500
    Abstract: An in-vehicle network system deployed in a vehicle includes a plurality of first nodes configured to perform an operation relevant to a first function in the vehicle, a second node configured to perform an operation relevant to a second function different from the first function in the vehicle; and a relay device configured to relay communication between the first nodes and the second node. The relay device is configured to start relay of communication between the first nodes earlier than the relay of communication between the first node and the second node at a time of startup.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: March 19, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shu Ishizuka, Hiroya Ando, Taichi Matsumura, Masashi Amesara, Yutaka Ueda, Toshio Kawamura, Tomomi Kawamura, Yoshifumi Ohmori, Toshio Shimada, Yoshiro Hirata
  • Patent number: 6411625
    Abstract: In an ATM-LAN network, a number of ports of a bridge are uniquely identified by port numbers and connected to LAN segments and an ATM network. A MAC frame from a source terminal is received at a first port and buffered in a FIFO and a search is made through a memory for an entry containing the destination address of the frame. If the entry is found, the frame is forwarded onto a second port identified by a port number contained in the entry. If the entry is not found, an address resolution request is sent to a LAN emulation server via the ATM network to obtain an ATM address corresponding to the destination address of the frame. A connection setup request is sent to the ATM network to establish a virtual connection in the ATM network according to the destination ATM address. The frame is then forwarded onto the port to which the ATM network is connected.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: June 25, 2002
    Assignee: NEC Corporation
    Inventors: Shingo Furuhashi, Toshio Ishizuka
  • Patent number: 5603904
    Abstract: A light-weight and easily manufacturable catalyst support structure is provided, which allows fluid flow into a catalyst bed in uniform distribution. The support structure is formed in a cone-like shape in which the diameter enlarges upward. The support structure comprises a shell-like support member, a first mesh layer comprising thick mesh elements, and a second mesh layer having a mesh size which does not allow catalytic particulates to pass through. The first mesh layer overlays the support member, and the second mesh layer overlays the first mesh layer. The shell-like support member includes a circular bottom plate extending perpendicular to the center line of the reactor, and a side wall having a truncated cone shape which extends upward from the edge of the bottom plate. The bottom plate and the side wall are primarily made of perforated plates through which the fluid passes. A plurality of cylindrical flow guides of different diameters are provided underneath the shell-like support member.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: February 18, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Robert W. Bachtel, Yoshitomo Ohara, Toshio Ishizuka, Tsunehiko Hiraga, Krishniah Parimi, David E. Earls
  • Patent number: 5527512
    Abstract: A light-weight and easily manufacturable catalyst support structure is provided, which allows fluid flow into a catalyst bed in uniform distribution. The support structure, used for supporting a moving catalyst bed within a moving bed reactor having an upward flowing fluid phase, is formed in a cone-like shape in which the diameter enlarges upward. The supporting structure comprises a shell-like support member, a first mesh layer comprising thick mesh elements, and a second mesh layer having a mesh size which does not allow catalyst particles to pass through. The first mesh layer overlays the support member, and the second mesh layer overlays the first mesh layer. The shell-like support member includes a circular bottom plate extending perpendicular to the center line of the reactor, and a side wall having a truncated cone shape which extends upward from the edge of the bottom plate. The bottom plate and the side wall are primarily made of perforated plates through which the fluid passes.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: June 18, 1996
    Assignee: Chevron U.S.A. Inc.
    Inventors: Robert W. Bachtel, Yoshitomo Ohara, Toshio Ishizuka, Tsunehiko Hiraga
  • Patent number: 4827473
    Abstract: A packet switching system for achieving high-speed packet switching on data lines having the X.25 protocol of the C.C.I.T.T. It includes a plurality of data line apparatuses (DLC: 10, 11, and 1N), a call connection control information transfer bus commonly connected to the plurality of data line apparatuses (CB: 2), a specialized data transfer bus for data packets (DB: 4), a packet buffer state information transfer bus for transmitting and receiving call state information (SB: 6), and a call connection controlling processor connected to the call connection control information transfer bus (CP: 3). Each of the data line apparatuses has a receive packet storing circuit (DTRQ: 102) provided with a receive packet buffer of the first-in random out (FIRO) memory, and a transmit packet storing circuit (DTSQ: 105) provided with a transmit packet buffer of the FIRO memory.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: May 2, 1989
    Assignee: NEC Corporation
    Inventors: Kazuo Tsuzuki, Yoshinori Yoshida, Toshio Ishizuka, Mitsugu Anezaki