Patents by Inventor Sadatsugu Okuda

Sadatsugu Okuda 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).

  • Weather-resistant polyacetal resin composition
    Patent number: 5079282
    Abstract: A polyacetal resin composition is improved in the weather-resistance and comprises:(A) a polyacetal resin,(B) 0.01 to 5% by weight (based on the whole composition) of a weathering (light) stabilizer and(C) 0.01 to 10% by weight (based on the whole composition) of an acrylic oligomer of a polyester type.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: January 7, 1992
    Assignee: Polyplastics Co., Ltd.
    Inventor: Sadatsugu Okuda
  • Weather-resistant polyacetal resin composition and molded articles therefrom
    Patent number: 4975478
    Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: December 4, 1990
    Assignee: Polyplastics Co., Ltd.
    Inventor: Sadatsugu Okuda
  • Weather-resistant polyacetal resin composition and molded articles therefrom
    Patent number: RE34141
    Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: December 8, 1992
    Assignee: Polyplastics Co., Ltd.
    Inventor: Sadatsugu Okuda