Patents by Inventor Shouichi Araseki

Shouichi Araseki 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).

  • Admixture for hydraulic cement
    Patent number: 5489626
    Abstract: A hydraulic cement composition comprising as an effective component a water-soluble amphoteric polymer obtained by Hofmann degradation reaction of an .alpha.,.beta.-unsaturated carbonamide polymer or a copolymer of .alpha.,.beta.-unsaturated carbonamide and an anionic monomer having a weight average molecular weight of 1,000-1,000,000.The primary amino group produced as a result of the Hofmann degradation reaction provides excellent cement dispersing capabilities.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: February 6, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Toshihiko Takaki, Kenji Tsuboi, Tsugio Matsubara, Atsushi Ito, Shouichi Araseki