Patents by Inventor Yukikazu Tsuji

Yukikazu Tsuji 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).

  • Process and apparatus for preparing mixture comprising granular materials such as sand, powder such as cement and liquid
    Patent number: 5452213
    Abstract: When obtaining a mixture such as a mortar or a concrete by adding powder such as cement, water and other liquid to granular materials such as sand, granular slug, artificial fine aggregate, and the like, useful data can be obtained from an underwater highest density packed material which is pressure-packed under an underwater condition where the charging surface of the granular material and the liquid surface are substantially in conformity with each other. In other words, the underwater unit volume weight of the granular material under this state can be obtained, and a fluidizable fine granular quantity and an underwater loosening rate are obtained from this weight. A developed area on a flow table of the mixture and other data are obtained and when these data are employed suitably, the regulation condition of the mixture is forecast and planned with a small error to attain proper utilization.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: September 19, 1995
    Inventors: Yasuro Ito, Toshio Hirose, Hajime Okamura, Yukikazu Tsuji
  • Method of preparing mortar or concrete
    Patent number: 4715719
    Abstract: A method and apparatus of measuring water percentages of a fine aggregate comprising the steps of prewetting the fine aggregate, containing the prewetted fine aggregate in an air-tightly closed container, applying a centrifugal force to said container over a predetermined period to remove a portion of a quantity of water deposited on the fine aggregate, and measuring the water content remaining in or on the fine aggregate after being subjected to the centrifugal force, and thus determining a percentage of water adhered to the fine aggregate and a percentage of water of the fine aggregate in which interstice thereof is saturated with water while a surface thereof is dry.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: December 29, 1987
    Assignee: Yasuro Ito and Taisei Corporation
    Inventors: Yasuro Ito, Yoshiro Higuchi, Takeshi Shiki, Yukikazu Tsuji, Masanori Tsuji, Mitsutaka Hayakawa
  • Method of preparing mortar or concrete
    Patent number: 4686852
    Abstract: A method and apparatus of measuring water percentages of a fine aggregate comprising the steps of prewetting the fine aggregate, containing the prewetted fine aggregate in an air-tightly closed container, applying a centrifugal force to said container over a predetermined period to remove a portion of a quantity of water deposited on the fine aggregate, and measuring the water content remaining in or on the fine aggregate after being subjected to the centrifugal force, and thus determining a percentage of water adhered to the fine aggregate and a percentage of water of the fine aggregate in which interstice thereof is saturated with water while a surface thereof is dry.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: August 18, 1987
    Assignees: Yasuro Ito, Taisei Corporation
    Inventors: Yasuro Ito, Yoshiro Higuchi, Takeshi Shiki, Yukikazu Tsuji, Masanori Tsuji, Mitsutaka Hayakawa