Patents by Inventor Touru Yamagishi

Touru Yamagishi 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).

  • Aromatic polyesters, polyesteramides, and compositions thereof
    Patent number: 4900804
    Abstract: An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: February 13, 1990
    Assignee: Kawasaki Steel Corporation
    Inventors: Tadahiro Wakui, Kenji Yoshino, Masafumi Komatsu, Yumiko Kumazawa, Touru Yamagishi, Mitsuhiko Izumi
  • Aromatic polyesters, polyesteramides, and compositions thereof
    Patent number: 4851497
    Abstract: An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: July 25, 1989
    Assignee: Kawasaki Steel Corporation
    Inventors: Tadahiro Wakui, Kenji Yoshino, Masafumi Komatsu, Yumiko Kumazawa, Touru Yamagishi, Mitsuhiko Izumi
  • Low-temperature-processible copolyesteramides, preparation of molded articles therefrom and compositions thereof
    Patent number: 4839128
    Abstract: Copolyesteramides consisting of specific units can be injection molded at a low temperature into a part having a high heat distortion temperature. A filled composition is obtained by blending the copolyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the copolyesteramide with an magnetic powder.The copolyesteramide consists essentially of units <I>, <II>, <III>, <IV>, and <V> of the following formulae: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently at least one divalent radical selected from the group consisting of para-phenylene, 2,6-naphthalene, and 4,4'-biphenylene,R.sup.5 is a para- or meta-phenylene radical,X.sup.1 is --NH--,X.sup.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: June 13, 1989
    Assignee: Kawasaki Steel Corp.
    Inventors: Kenji Yoshino, Tadahiro Wakui, Yumiko Kumazawa, Mitsuhiko Izumi, Touru Yamagishi