Patents by Inventor Sojiro Kitano

Sojiro Kitano 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).

  • Antistatic resin blends comprising ABS graft copolymers and ethylene oxide copolymers
    Patent number: 5556916
    Abstract: A resin composition is provided which comprises a mixture of A) 100 parts by weight of an ABS graft copolymer comprising as component monomers an acrylonitrile compound and a vinyl aromatic compound in a weight ratio of 10:90 to 50:50, and B) 5 to 30 parts by weight of an ethylene oxide copolymer comprising ethylene oxide as a first monomer and a second monomer and containing at least 50 wt. % of ethylene oxide, the ethylene oxide copolymer having a refractive index (n.sub.D.sup.20) of at least 1.50, wherein said second monomer has a refractive index of at least 1.54 and is 2-phenylphenyl glycidyl ether or 1-naphthyl glycidyl ether, and wherein the molecular weight of the ethylene oxide copolymer is 1 to 5 in terms of a reduced viscosity as measured at 80.degree. C. using 0.1 g/dl monochlorobenzene solution thereof.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: September 17, 1996
    Assignee: Daiso Co. Ltd.
    Inventors: Yasuo Matoba, Yasumi Shimizu, Katsuhito Miura, Sojiro Kitano, Takahiro Sakashita, Hidekazu Tanaka