Patents by Inventor Shuuichi Harasawa

Shuuichi Harasawa 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).

  • Cement admixture
    Publication number: 20060249053
    Abstract: A burned product containing 100 parts by weight of C2S and 10 to 100 parts by weight in total of C3A and C4AF, a cement admixture obtained by grinding the burned product, and a cement containing 100 parts by weight of a ground Portland cement clinker and 5 to 100 parts by weight of the burned product. The cement is good in both initial strength and long-term strength.
    Type: Application
    Filed: March 3, 2003
    Publication date: November 9, 2006
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hideyuki Sugaya, Kenichi Honma, Makihiko Ichikawa, Daisuke Sawaki, Shuuichi Harasawa
  • Cement admixture
    Patent number: 6997984
    Abstract: A burned product containing 100 parts by weight of C2S, 10 to 100 parts by weight of C2AS, and 20 parts by weight or less of C3A; a cement admixture prepared by grinding the burned product; and a cement containing 100 parts by weight of ground portland cement clinker and 5 to 100 parts by weight of a ground product of the burned product.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: February 14, 2006
    Assignee: Taiheiyo Cement Corporation
    Inventors: Daisuke Sawaki, Shuuichi Harasawa, Kenichi Honma, Makihiko Ichikawa
  • Cement admixture
    Publication number: 20050115465
    Abstract: A burned product containing 100 parts by weight of C2S, 10 to 100 parts by weight of C2AS, and 20 parts by weight or less of C3A; a cement admixture prepared by grinding the burned product; and a cement containing 100 parts by weight of ground portland cement clinker and 5 to 100 parts by weight of a ground product of the burned product. Through use of a cement admixture produced by grinding the burned product of the present invention, cement products exhibiting low heat of hydration and good fluidity can be obtained.
    Type: Application
    Filed: March 19, 2003
    Publication date: June 2, 2005
    Applicant: Taiheiyo Cement Corp.
    Inventors: Daisuke Sawaki, Shuuichi Harasawa, Kenichi Honma, Makihiko Ichikawa