Patents by Inventor Toshio Enoki

Toshio Enoki 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: 5474828
    Abstract: Disclosed herein are electronic device sealing resin compositions containing (A) 40-25 parts by weight of a thermoplastic resin composed of 100-10 wt. % of a poly(arylene thioether-ketone) and 0-90 wt. % of a poly(arylene sulfide), (B) 60-75 parts by weight of an inorganic filler, and per 100 parts by weight of the sum of the thermoplastic resin (A) and inorganic filler (B), (C) 1.5-5 parts by weight of a silicone oil, (D) 10-15 parts by weight of a silicone rubber or (C) 0.5-3 parts by weight of a silicone oil and (D) 5-13 parts by weight of a silicone rubber. Electronic devices sealed using such resin compositions are also disclosed.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: December 12, 1995
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Toshitaka Kouyama, Keiichiro Suzuki, Toshio Enoki, Yasuo Sakaguchi
  • Patent number: 5332770
    Abstract: Disclosed herein are electronic device sealing resin compositions containing (A) 40-25 parts by weight of a thermoplastic resin composed of 100-10 wt. % of a poly(arylene thioether-ketone) and 0-90 wt. % of a poly(arylene sulfide), (B) 60-75 parts by weight of an inorganic filler, and per 100 parts by weight of the sum of the thermoplastic resin (A) and inorganic filler (B), (C) 1.5-5 parts by weight of a silicone oil, (D) 10-15 parts by weight of a silicone rubber or (C) 0.5-3 parts by weight of a silicone oil and (D) 5-13 parts by weight of a silicone rubber. Electronic devices sealed using such resin compositions are also disclosed.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: July 26, 1994
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Toshitaka Kouyama, Keiichiro Suzuki, Toshio Enoki, Yasuo Sakaguchi
  • Patent number: 5256743
    Abstract: Disclosed herein is a poly(arylene thioether) resin composition comprising 100 parts by weight of a poly(arylene thioether) (A) having a shear rate dependence value of melt viscosity at 310.degree. C. of 2.2-3.0 and a crystallization temperature of 175.degree.-210.degree. C., and 20-400 parts by weight of a poly(arylene thioether) (B) having a shear rate dependence value of melt viscosity at 310.degree. C. of 1.0-2.0 and a crystallization temperature of 220.degree.-260.degree. C. The resin portion consisting of the poly(arylene thioethers) (A) and (B) in the resin composition has a melt viscosity of 1,400-3,500 poises as measured at 310.degree. C. and a shear rate of 1,200 sec.sup.-1, a shear rate dependence value of melt viscosity at 310.degree. C. of 1.5-2.3, and a crystallization temperature of 205.degree.-230.degree. C. Extruded products such as a tubular extruded article obtained from the resin composition are also disclosed.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: October 26, 1993
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Toshio Enoki, Yasuo Sakaguchi
  • Patent number: 5187257
    Abstract: Disclosed herein is a crystallized, thin-wall container which is excellent in heat-resistance, oil-resistance, chemical stability under high temperature and high humidity and gas impermeability, is particularly suitable for heating foodstuffs packaged in it in electronic range, electric oven, etc. and is obtained by thermoforming a substantially amorphous sheet which has a crystallinity index of below 15% and an elongation of not less than 100% at room temperature and is obtained from a poly(arylene sulfide) which has a substantially linear structure, has not less thant 70 wt % of a repeating unit of ##STR1## and a logarithmic viscosity number of 0.2 to 1.0 in a solution of 1-chloronaphthalene (concentration of 0.4 g/dl at a temperature of 208.degree. C.) and a process for producing the container.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: February 16, 1993
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Katto, Yukio Ichikawa, Toshio Enoki, Kenichi Katase
  • Patent number: 5085819
    Abstract: Heat-resistant resin composition including (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher or recurring units of the formula ##STR1## and a logarithmic viscosity number of 0.1 to 1.0 dl/g; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR2## wherein the --CO-- and --S-- are in the para position to each other, and having a melting point of 310.degree.-380.degree. C., a residual melt crystallization enthalpy of at least 10 J/g, a melt crystallization temperature of at least 210.degree. C. and a reduced viscosity of 0.2 to 2 dl/g; and (C) at least one of fibrous fibers and/or at least one of inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component including said poly(arylene sulfide) and said poly(arylene thioether-ketone).
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: February 4, 1992
    Assignee: Kureha Kabaku Kogyo K.K.
    Inventors: Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yukio Ichikawa, Yo Iizuka, Makoto Fukuda, Toshio Enoki, Takayuki Katto, Yasuo Sakaguchi, Zenya Shiiki
  • Patent number: 4895893
    Abstract: Heat-resistant resin composition comprising (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula ##STR1## and a logarithmic viscosity number of 0.1 to 1.0 dl/g; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula ##STR2## wherein the --CO-- and --S-- are in the para position to each other, and having a melting point of 310.degree.-380.degree. C., a residual melt crystallization enthalpy of at least 10 J/g, a melt crystallization temperature of at least 210.degree. C. and a reduced viscosity of 0.2 to 2 dl/g; and (C) at least one of fibrous fibers and/or at least one of inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: January 23, 1990
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yukio Ichikawa, Yo Iizuka, Makoto Fukuda, Toshio Enoki, Takayuki Katto, Yasuo Sakaguchi, Zenya Shiiki
  • Patent number: 4781994
    Abstract: A cement material containing polyarylene thioether fibers and carbon fibers as reinforcing fiber and molded articles comprising hardened products thereof are disclosed.The fiber reinforced cement material is curable in an autoclave and the molded articles comprising the hardened products thereof are excellent in deflection property, impact strength, tensile strength and bending strength.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: November 1, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toshio Enoki, Yasuo Sakaguchi
  • Patent number: 4212712
    Abstract: This invention relates to an apparatus for the electrolytic treatment of alkali halide solution in a three chamber type electrolytic bath assembly comprising an anodic chamber, an intermediate chamber and a cathodic chamber arranged one after another in series. Each chamber is from its neighboring chamber by means of a cationic permselective membrane. The apparatus is characterized, according to this invention, in that the first one of the membranes separating the intermediate and anodic chambers is made of a fluorine-containing resin, while the second membrane separating the intermediate and cathodic chambers includes, as its main ion exchange radial, a pendant type phenolic radical or derivative thereof. The inventive process, which utilizes the above-described apparatus is characterized in that it utilizes a caustic alkali concentration in the intermediate chamber which ranges from about 10-20 wt.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: July 15, 1980
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Naohiro Murayama, Makoto Fukuda, Teruo Sakagami, Shirou Suzuki, Yoshikazu Kokubu, Toshio Enoki
  • Patent number: 4111780
    Abstract: This invention relates to an apparatus for the electrolytic treatment of alkali halide solution in a three chamber type electrolytic bath assembly comprising an anodic chamber, an intermediate chamber and a cathodic chamber arranged one after another in series. Each chamber is separated from its neighboring chamber by means of an anodic ion exchange membrane. The apparatus is characterized, according to this invention, in that the first one of the membranes separating the intermediate and anodic chambers is made of a fluorine-containing resin, while the second membrane separating the intermediate and cathodic chambers includes, as its main ion exchange radical, a pendant type phenolic radical or derivative thereof. The inventive process, which utilizes the above-described apparatus characterized in that it utilizes a caustic alkali concentration in the intermediate chamber which ranges from about 10 - 20 wt.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: September 5, 1978
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Naohiro Murayama, Makoto Fukuda, Teruo Sakagami, Shirou Suzuki, Yoshikazu Kokubu, Toshio Enoki