Patents by Inventor Michiro Naka

Michiro Naka 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: 5068052
    Abstract: A resin composition comprises a thermoplastic polymer and a smectic liquid crystal compound and is useful for fibers and film having been improved in mechanical properties.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: November 26, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Junji Watanabe, Michiro Naka, Kenji Hijikata
  • Patent number: 5043215
    Abstract: A halogen-containing polyester resin composition having an improved stable flexibility and flame retardency which comprises a bislactam compound and a flame-resisting aromatic polyester copolymers containing halogen at a ratio of 0.5 to 30% by weight, said copolymers being by the poly-condensation of(A) aromatic dicarboxylic acids or ester-forming derivatives thereof;(B) aliphatic glycols or ester-forming derivatives thereof; and(C) halogen-containing ester-forming compounds, said bislactam compound being present in a ratio of 0.1 to 10% by weight based on the total quantity of the composite.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: August 27, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Kenji Hijikata, Yukihiko Kageyama, Michiro Naka
  • Patent number: 5039760
    Abstract: A polyester resin composition exhibiting improved heat-resistant flexibility including (A) a polyester copolymer which is the polycondensation reaction product of (a) an aromatic dicarboxylic acid or an ester-forming derivative thereof, (b) an aliphatic glycol, and (c) between 0.001 to 1.0 mole %, based upon component (a), of a branch-forming compound, and (B) between 0.1 to 10% by weight (based on the total weight of the composition) of a bisoxazoline compound.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: August 13, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Michiro Naka, Yukihiko Kageyama, Hiroaki Konuma, Kenji Hijikata
  • Patent number: 5021295
    Abstract: A flame-retarding polyester composition is useful for coating an electric wire, which comprises a melt-mixture of, (A) a copolyester having a halogen content of 0.5 to 30 wt. % and (B) a branched copolymer prepared by the condensation polymerization of monomers mainly comprising(a)' a component mainly comprising an aromatic dicarboxylic acid or an ester-forming derivative thereof,(b)' a component mainly comprising an aliphatic glycol or an ester-forming derivative thereof and(d) a branching compound, which contains 0.001 to 0.5 molar % (based on the total amount of the carbonyl groups of the copolyester) of said branching compound (d).
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: June 4, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Michiro Naka, Hiroaki Konuma, Kenji Hijikata
  • Patent number: 5021545
    Abstract: The present invention provides a novel flame-retardant halogenated copolyester containing a branched or crosslinked structure to an extent such that it will not impair the solubility of the copolyester in solvent to thereby reduce the lowering in the softness caused by thermal history. Therefore, this copolyester and a composition comprising the same are particularly useful as a coating material for an electric wire to be used in the vicinity of a heat source or in an environment in danger of heat buildup.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: June 4, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Michiro Naka, Hiroaki Konuma, Kenji Hijikata
  • Patent number: 5006634
    Abstract: The present invention provides a novel flame-retardant halogenated copolyester containing a branched or crosslinked structure to an extent such that it will not impair the solubility of the copolyester in solvent to thereby reduce the lowering in the softness caused by thermal history. Therefore, this copolyester and a composition comprising the same are particularly useful as a coating material for an electric wire to be used in the vicinity of a heat source or in an environment in danger of heat buildup.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: April 9, 1991
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Michiro Naka, Hiroaki Konuma, Kenji Hijikata
  • Patent number: 4954540
    Abstract: A halogen-containing polyester resin composition comprises a flame retardant aromatic polyester copolymer having a halogen content of 0.5 to 30 wt. %, obtained by poly-condensating(A) mainly aromatic dicarboxylic acids or ester-forming derivatives thereof;(B) mainly aliphatic glycols or ester-forming derivatives thereof; and(C) halogen-containing ester-forming compounds, and 0.1 to 10 wt. %, based, on the entire composition of a bisaziridine compound. The composition is useful to coat an electric wire therewith.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: September 4, 1990
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshio Nakane, Kenji Hijikata, Yukihiko Kageyama, Michiro Naka
  • Patent number: 4407881
    Abstract: By the use of improved decorative sheets each comprising (a) a hydrophilic deformative sheet which is susceptible to expansion deformation by swelling caused by water absorption and (b) a moisture penetration controlling layer formed on the entire surface of at least one side of the hydrophilic deformative sheet, each decorative sheet being designed to differ, depending upon regions of the sheet, in the degree of expansion deformation caused by water absorption, decorative articles each having a deep and clear surface unevenness or relief pattern can be obtained on hardened water-containing plastic materials. These decorative articles are applicable to various uses such as architectural materials (interior and exterior materials for walls, ceilings, etc.), decoration boards and panels, materials for sign boards and materials for packaging.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: October 4, 1983
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Mutsuo Shima, Kensuke Aoyama, Michiro Naka