Patents by Inventor Yukihisa Mizutani

Yukihisa Mizutani 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).

  • Heat resistant thermoplastics resin composition excellent in processing flowability
    Patent number: 4444934
    Abstract: A heat resistant thermoplastic resin composition improved in working fluidity while keeping the characteristics of aromatic polyether resins such as heat resistance and solvent cracking resistance. This composition comprises 100 parts by weight of an aromatic polyether resin or a mixed resin of an aromatic polyether resin and a styrene resin and 0.1 to 10 parts by weight of a polyhydric alcohol fatty acid ester having at least one --OH group. This ester preferably has a molecular weight of at least 200.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: April 24, 1984
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Hideo Kasahara, Yukihisa Mizutani, Kunio Fukuda
  • Injection molded articles with improved surface characteristics
    Patent number: 4439492
    Abstract: In injection molding thermoplastic resin compositions containing reinforcing materials and/or fillers, high quality molded articles superior in surface gloss and exhibiting substantially no surface defect can be obtained, by employing a technical measure, in which only superficial layer of the inner wall surface of the mold is selectively heated, by high-frequency induction heating, to a temperature above the heat distortion temperature of the thermoplastic resin composition employed prior to injection molding and cooling and solidifying the resin.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: March 27, 1984
    Assignee: Asahi-Dow Limited
    Inventors: Akihiro Wada, Kichiya Tazaki, Tamotsu Tahara, Hiroshi Suzuki, Yukihisa Mizutani
  • Resin composition for injection molding and method for producing the same
    Patent number: 4369278
    Abstract: A resin composition suitable for injection moulding and having excellent heat resistance, impact resistance and crack resistance, which is composed of polyphenylene ether and rubber-reinforced styrene resin and an amount of volatile matters in the resin having molecular weight of about 300 or less is 5000 ppm or less. This resin composition is prepared by melting and kneading the two resins above in an extruder with a vent under keeping the vent part under reduced pressure.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: January 18, 1983
    Assignee: Asahi-Dow Limited
    Inventors: Hideo Kasahara, Kunio Fukuda, Yukihisa Mizutani
  • Injection molded articles with improved surface characteristics, production of same and apparatus therefor
    Patent number: 4340551
    Abstract: In injection molding thermoplastic resin compositions containing reinforcing materials and/or fillers, high quality molded articles superior in surface gloss and exhibiting substantially no surface defect can be obtained, by employing a technical measure, in which only superficial layer of the inner wall surface of the mold is selectively heated, by high-frequency induction heating, to a temperature above the heat distortion temperature of the thermoplastic resin composition employed prior to injection molding and cooling and solidifying the resin.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: July 20, 1982
    Assignee: Asahi-Dow Limited
    Inventors: Akihiro Wada, Kichiya Tazaki, Tamotsu Tahara, Hiroshi Suzuki, Yukihisa Mizutani
  • Molding material structure
    Patent number: 4169186
    Abstract: A molding material structure of a thermoplastic resin composition comprising (1) at least one pillar-shaped body made of a bundle of glass fiber filaments and a non-oriented thermoplastic resin and (2) an outer covering layer of an oriented thermoplastic resin compatible with the resin in said inner body is found to produce molded articles in which glass fiber filaments are dispersed uniformly in the resin matrix with longer average length to improve various properties of molded articles, especially impact strength.
    Type: Grant
    Filed: April 13, 1978
    Date of Patent: September 25, 1979
    Assignee: Asahi-Dow Limited
    Inventors: Kichiya Tazaki, Tamotsu Tahara, Akihiro Wada, Yukihisa Mizutani