Patents by Inventor Kiyoshi Ikeda

Kiyoshi Ikeda 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: 5523353
    Abstract: A rubber composition is provided which comprises 100 parts by weight of ethylene-(meth)-acrylate copolymer rubbers and/or ethylene-(meth)-acrylate-unsaturated glycidyl ester copolymers, 5 to 300 parts by weight of a hydroxide of a typical metallic element belonging to Group II or III of the Mendeleev's periodic table and 0.1 to 50 parts by weight of a metallic acrylate compound. This composition keeps properties required for rubbers such as tensile strength, elasticity, scorch resistance and processability at high levels and is excellent in wear resistance and flame retardance.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: June 4, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Keisaku Yamamoto, Kiyoshi Ikeda, Masahiro Fukuyama
  • Patent number: 5462975
    Abstract: A rubber composition for sponge rubber which contains following components (A).about.(E) and satisfies the following requirements that the ratio by weight of (A)/(B) is 30/70.about.99/1 and the amount of component (C) is 50.about.400 parts by weight per 100 parts by weight of the total amount of components (A) and (B):(A): Epoxy group-containing acryl elastomer.(B): Ethylene copolymer which contains a carboxyl group(s) or a carboxylic anhydride group(s).(C): Hydroxyl compound of II or III group of typical metal element in periodic table.(D): Vulcanizer.(E): Foaming agent.The sponge rubber compositions of the invention can be used for sponge for insulator in the field of electricity, architecture, automobile and the like, because sponge rubber compositions of the invention have the characteristics of good heat resistance, good oil stability, high-foaming property, and good shape-retention.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: October 31, 1995
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Keisaku Yamamoto, Kiyoshi Ikeda, Masahiro Fukuyama
  • Patent number: 5438101
    Abstract: A rubber composition is provided which comprises 100 parts by weight of ethylene-(meth)acrylate copolymer rubbers and/or ethylene-(meth)acrylate-unsaturated glycidyl ester copolymers, 5 to 300 parts by weight of a hydroxide of a typical metallic element belonging to Group II or III of the Mendeleev's periodic table and 0.1 to 50 parts by weight of a metallic acrylate compound. This composition keeps properties required for rubbers such as tensile strength, elasticity, scorch resistance and processability at high levels and is excellent in wear resistance and flame retardance.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: August 1, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Keisaku Yamamoto, Kiyoshi Ikeda, Masahiro Fukuyama
  • Patent number: 5356228
    Abstract: In a wire dot printer having a wire-dot print head provided with wire drive elements disposed in sequence, the energization of the respective wire drive elements is controlled in accordance with print data supplied for respective drive elements and a drive time signal supplied in common to a plurality of the drive elements. Detection is made, for each drive element, whether or not an adjacent drive element is energized, in accordance with the print data corresponding to the adjacent drive element, and the energization time for the particular drive element is controlled in accordance with the result of the detection.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: October 18, 1994
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Tatsuya Koyama, Hirokazu Andou, Kiyoshi Ikeda
  • Patent number: 5165808
    Abstract: A spring-charged wire dot print head having printing wires is provided with back poles paired up respectively with the cores of electromagnets for cancelling the magnetic flux produced by a permanent magnet, to eliminate the adverse effect of magnetic interference liable to occur in driving the adjacent printing wires. The adjacent pairs of cores and back poles are opposite to each other with respect to the polarity of the magnetic path of the magnetic flux produced by the permanent magnet.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: November 24, 1992
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hirokazu Andou, Hiroshi Kikuchi, Tatsuya Koyama, Mitsuru Kishimoto, Kiyoshi Ikeda, Minoru Teshima
  • Patent number: 5141341
    Abstract: In a wire dot print head, swinging members are formed of plate springs and armatures, which are attracted toward a core to resiliently deform a plate spring when an associated coil is not energized, and are released and moved forward when the coil is energized. The swinging members are swung about the forward tip ends of fulcrum members. A partition sheet is interposed between the rear surfaces of the swinging members and both the front ends of the cores and the front tip ends of the fulcrum members to interrupt transfer of grease, and to prevent direct contact of the cores and the fulcrum members with the armatures. The partition sheet includes a front plastic film, a metallic residual sheet, and a rear plastic film which are stacked in the stated order from the front side to the rear side of the print head. The front film is bonded to the metallic residual sheet over the entire surface of the metallic residual sheet.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: August 25, 1992
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Tatsuya Koyama, Katsuya Kamimura, Kiyoshi Ikeda
  • Patent number: 5100964
    Abstract: A rubber composition is disclosed, comprising (a) 100 parts by weight of a synthetic rubber and (b) from 0.5 to 10 parts by weight of an alkylene oxide adduct of a saponified ethylene-saturated carboxylic acid vinyl ester copolymer. The rubbber composition can provide a vulcanized rubber composition which can retain its excellent appearance over a prolonged period of time because of freedom from blooming, has excellent antistatic performance due to its electrical conductivity, can be colored in various tints including white, and also has excellent properties in terms of tensile strength and specific gravity.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: March 31, 1992
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Keisaku Yamamoto, Yoshio Tanimoto, Kiyoshi Ikeda, Nobuhiro Natsuyama, Sumio Hara, Junichi Koshiba
  • Patent number: 4974975
    Abstract: An armature device of a printing head for use in a wire printer includes stylus having a free end to strike a recording medium, an armature connected to the stylus for reciprocating the stylus in a longitudinal direction thereof, a permanent magnet for generating a magnetic flux, a core for conducting the magnetic flux into the armature to form a magnetic path, a coil winding wound around the core for selectively substantially cancelling the magnetic flux, and a spring member having a free end supporting the armature for spring biasing the armature away from the core. The armature has a generally elongated shape, and a transverse groove formed in an end portion of the armature. The end portion of the armature has a first portion forming one wall of the groove and a second portion forming the other wall of the groove, the first and second portions opposing each other along the longitudinal direction of the armature. One of the walls is higher than the other wall.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: December 4, 1990
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Hirokazu Andou, Kiyoshi Ikeda, Muto Eisaku
  • Patent number: 4803738
    Abstract: A radio communications system has a node station centrally located in a covering area and a plurality of remote substations. The system comprises a plurality of transceivers in the node station, and a plurality of substation transceivers respectively located in the substations corresponding respectively to the node station transceivers to establish a plurality of pairs of two-way radio links therebetween. The covering area is divided into a plurality of concentric zones, each of the zones being assigned a pair of particular frequencies or a pair of particular polarization planes. Each zone has one or more substations.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: February 7, 1989
    Assignee: NEC Corporation
    Inventor: Kiyoshi Ikeda
  • Patent number: 4703479
    Abstract: A multi-direction time division multiplex communication apparatus for a central station in a multi-direction time division multiplex communication system in which the central station transmits signals meant for each of satellite stations in a time division multiplex broadcast mode, while each of the satellite stations after extraction of a clock extracts the signal meant for the own station and intermittently transmits signals from the own station after adjusting the signals to such a timing that, when the signals from the own station reach the satellite station, the signals do not overlap with signals reaching the central station from the other satellite stations and appear as orderly as a single sequence of time division multiplex signals.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: October 27, 1987
    Assignee: NEC Corporation
    Inventor: Kiyoshi Ikeda
  • Patent number: 4292153
    Abstract: A method for processing substrate materials by uniform plasma treatment, including the steps of mounting substrate materials onto a series of electrode plates arranged in parallel, alternately connecting the electrode plates to a pair of bus lines, applying a high-frequency power between the bus lines for producing plasma between the electrode plates, changing the feed points of the high-frequency power on the pair of bus lines so that the plasma treatment is effected substantially uniformly in the different spaces between the several electrode plates.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: September 29, 1981
    Assignee: Fujitsu Limited
    Inventors: Daijiro Kudo, Kiyoshi Ikeda
  • Patent number: 4015205
    Abstract: A baseband signal switching arrangement for diversity reception in a PCM communication system is disclosed. The switching arrangement is characterized by the provision of a 1/n write-in frequency-dividing counter in each receiving channel to count clock signals in response to being reset by a frame signal and n buffer memory circuits for successively writing bit information of a received digital signal in response to the n frequency-divided outputs of the 1/n frequency-dividing counter. The switching arrangement further includes a 1/n read-out frequency-dividing counter which is adapted to successively read out memory outputs of one set of the n buffer memory circuits and a switching means for enabling the 1/n read-out frequency-dividing counter to selectively read out memory outputs of a given set of buffer memory circuits.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: March 29, 1977
    Assignee: Nippon Electric Company, Ltd.
    Inventors: Kiyoshi Ikeda, Toshihiko Mitani