Patents by Inventor Hiroma Miyashita

Hiroma Miyashita 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).

  • Unsaturated polyester compositions, molding materials and molded products
    Patent number: 5395865
    Abstract: Quickly curable unsaturated polyester composition with improved surface characteristics and stability in storage contains 20-40 weight parts of unsaturated polyester, 20-60 weight parts of vinyl monomer, 0.01-1.0 weight parts of BHT (ditertiary butyl hydroxy toluene), and 10-40 weight parts of thermoplastic resin such that the total is 100 weight parts. In addition, 0.001-0.1 weight parts of compound with effect of inhibiting polymerization at temperatures over 100.degree. C. are contained against the total of 100 weight parts. Molding materials are obtained by impregnating glass fibers with such compositions and products are obtained by curing such molding materials.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: March 7, 1995
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Koichi Akiyama, Takashi Shibata, Hiroma Miyashita, Sanji Aoki, Ken Hatta, Takashi Ino, Yasuhiro Mishima