Patents by Inventor Kenichi Uchino

Kenichi Uchino 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).

  • Network bridge using only hardware to process media access control (MAC) packet-switching operations
    Patent number: 5926626
    Abstract: A bridge device for connecting networks together via data link layers, that assigns input port numbers unique to each port, to headers of input memory access control packets. A content-addressable memory stores destination addresses and groups of port numbers corresponding to the destination addresses. A determiner such as a controller determines whether or not a destination address of a memory access control packet is stored in the memory and determines whether or not a port number corresponding to the destination address coincides with an input port number of the memory access control packet. Based on the determinations made by the determiner, a selector selects one of the following as an output port number: either a port number corresponding to the destination address, or a port number designating all ports other than the input port, or a port number not designating any ports. An output port number assigner assigns an output port number to a memory access control port.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: July 20, 1999
    Assignee: OKI Electric Industry Co., Ltd.
    Inventors: Yorihisa Takeuchi, Koichi Kihara, Kenichi Uchino, Jiro Asoh
  • Optical tape
    Patent number: 5527594
    Abstract: An optical tape comprising a substrate having a center line average roughness (Ra.sup.A) on one side of 0.005 to 0.5 .mu.m and a tensile strength (F.sub.5) in the longitudinal direction of not less than 8 kg/mm.sup.2, and an optical recording layer formed on the other side of said substrate.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: June 18, 1996
    Assignee: Diafoil Hoechst Company, Limited
    Inventors: Shinichi Kinoshita, Hidemi Yoshida, Kenichi Uchino
  • Magneto-optical recording medium
    Patent number: 5233575
    Abstract: A magneto-optical recording medium capable of overwriting which comprises a substrate, a magneto-optical recording layer provided on the substrate, a recording auxiliary layer provided on the substrate, a recording auxiliary layer provided on the magneto-optical recording layer and a heat sink layer provided on the side of the recording auxiliary layer.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 3, 1993
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Kenichi Uchino, Toshifumi Kawano
  • Metal-containing indoaniline compound and optical recording medium employing the compound
    Patent number: 4954420
    Abstract: A metal-containing indoaniline compound having the formula: ##STR1## wherein M is a metal atom of Group VIII, Ib, IIb, IIIb, IVa, Va, VIa or VIIa of the Periodic Table or its halide or oxide, rings A, B, C, D, E and F may have substituents, each of K.sup.1 K.sup.2 and K.sup.3 is a residue of a substituted or unsubstituted aromatic amine, each of l, m and n is 0 or 1, provided l+m+n=2 or 3, and p is 2, 3 or 4.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: September 4, 1990
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Shuichi Maeda, Toshio Kaneko, Yutaka Kurose, Michiyo Kimura, Hidemi Yoshida, Kenichi Uchino, Shizue Inaba