Patents by Inventor Mamoru Fujihira

Mamoru Fujihira 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).

  • Stryrene resin composition and process for producing the same
    Patent number: 6310148
    Abstract: A styrene resin composition excellent in luster, rigidity and surface impact strength is provided. A mixed solution of (b1) a homopolymer of a diene monomer or (b2) a copolymer of a styrene monomer and a diene monomer, the copolymer having 15% or less on a weight basis of the styrene structure units, (b3) a copolymer of a styrene monomer and a diene monomer, the copolymer having 20 to 50% on a weight basis of the styrene structure units, (a1) a styrene monomer, and (a2) a (meth)acrylic acid alkyl ester is continuously bulk polymerized in a continuous bulk polymerization line having incorporated therein a tubular reactor with a plurality of mixing elements that have no mobile part fixed inside thereof.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: October 30, 2001
    Assignee: Dainippon Ink and Chemicals, Ltd.
    Inventors: Tsuyoshi Morita, Mamoru Fujihira, Jiro Matsuo