Patents by Inventor Miki Oba

Miki Oba 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).

  • Method for strengthening a ground
    Patent number: 8596924
    Abstract: A plastic gel grouting material, which comprises a silica type non-hardening powdery material and water or a silica type non-hardening powdery material, a calcium type hardening developing material and water as active ingredients, is statically pressure-injected into a soft, loose or weak ground to thereby form masses derived from the grouting material per se in the ground, and concurrently therewith, to compact the surrounding earth and sand, thereby increasing density of the ground. A plastic gel grouting material is provided which loses its flowability with time or by dewatering to form masses derived from the grouting material per se in a ground and which comprises a silica type non-hardening powdery material and water or a silica type non-hardening powdery material, a calcium type hardening developing material and water as active ingredients.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: December 3, 2013
    Assignee: Kyokado Engineering Co., Ltd.
    Inventors: Shunsuke Shimada, Miki Oba
  • Plastic Gel Grouting Material and Method for Strengthening Ground
    Publication number: 20090304457
    Abstract: A plastic gel grouting material, which comprises a silica type non-hardening powdery material and water or a silica type non-hardening powdery material, a calcium type hardening developing material and water as active ingredients, is statically pressure-injected into a soft, loose or weak ground to thereby form masses derived from the grouting material per se in the ground, and concurrently therewith, to compact the surrounding earth and sand, thereby increasing density of the ground. A plastic gel grouting material is provided which loses its flowability with time or by dewatering to form masses derived from the grouting material per se in a ground and which comprises a silica type non-hardening powdery material and water or a silica type non-hardening powdery material, a calcium type hardening developing material and water as active ingredients.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 10, 2009
    Applicant: Kyokado Engineering Co., Ltd.
    Inventors: Shunsuke Shimada, Miki Oba