Patents by Inventor Yoshikazu ISHIZEKI

Yoshikazu ISHIZEKI 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).

  • Seawater-Mixed Concrete, Concrete Structure Constructed with the Same, and Design Method of Concrete Structure Constructed with Seawater-Mixed Concrete
    Publication number: 20140202358
    Abstract: The present invention relates to concrete with necessary durability using seawater and sea sand. The seawater mixed concrete of the present invention is obtained by mixing a mixture including slag-containing cement and sea sand, with seawater. And by including a nitrite-based admixture and pozzolan, the diffusion coefficient of concrete after hardening can be reduced to restrain the external intrusion of harmful factors. Further, the concrete structure according to the present invention can include seawater mixed concrete and reinforcement for increasing tensile strength.
    Type: Application
    Filed: March 24, 2014
    Publication date: July 24, 2014
    Applicant: Obayashi Corporation
    Inventors: Shigeru Aoki, Makoto Kanai, Nobufumi Takeda, Yoshikazu Ishizeki
  • SEAWATER-MIXED CONCRETE, CONCRETE STRUCTURE CONSTRUCTED WITH THE SAME, AND DESIGN METHOD OF CONCRETE STRUCTURE CONSTRUCTED WITH SEAWATER-MIXED CONCRETE
    Publication number: 20120156503
    Abstract: The present invention relates to concrete with necessary durability using seawater and sea sand. The seawater mixed concrete of the present invention is obtained by mixing a mixture including slag-containing cement and sea sand, with seawater. And by including a nitrite-based admixture and pozzolan, the diffusion coefficient of concrete after hardening can be reduced to restrain the external intrusion of harmful factors. Further, the concrete structure according to the present invention can include seawater mixed concrete and reinforcement for increasing tensile strength.
    Type: Application
    Filed: August 23, 2011
    Publication date: June 21, 2012
    Applicant: OBAYASHI CORPORATION
    Inventors: Shigeru AOKI, Makoto KANAI, Nobufumi TAKEDA, Yoshikazu ISHIZEKI