Patents by Inventor Masatugu Kusano

Masatugu Kusano 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).

  • Curable composition
    Patent number: 5856374
    Abstract: A curable composition comprising (i) a polymerizable monomer, (ii) irregular-shaped inorganic particles (A) having an average particle diameter of from 1 to 9 .mu.m, and containing particles having particle diameters of not smaller than 10 .mu.m in an amount of not larger than 3% by weight, such as silica-zirconia irregular-shaped particles, (iii) spherical inorganic particles (B) having an average particle diameter of from 0.1 to 5 .mu.m, such as spherical silica-zirconia particles; (iv) inorganic fine particles (C) having an average particle diameter of from 0.01 to 0.1 .mu.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: January 5, 1999
    Assignee: Tokuyama Corporation
    Inventors: Toru Ono, Masatugu Kusano, Masataka Himeno, Shigeki Yuasa