Patents by Inventor Seiro Ibuki

Seiro Ibuki 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 for producing a mixture of tobermorite and ettringite
    Patent number: 4432804
    Abstract: A lime material and a siliceous material containing 10 to 40% by weight of alumina are admixed with an alkali solution, and the mixture is subjected to hydrothermal reaction with saturated water vapor at 4 to 40 kg/cm.sup.2 to form tobermorite. The reaction mixture is filtered to separate the tobermorite therefrom. A lime material and a gypsum material are added to the resulting filtrate, and the mixture is reacted at room temperature to a temperature of 90.degree. C. to form ettringite. The alkali filtrate separated from the ettringite is reused for the production of tobermorite.
    Type: Grant
    Filed: March 10, 1981
    Date of Patent: February 21, 1984
    Assignee: Kubota Ltd.
    Inventors: Hideo Tamura, Seiro Ibuki
  • Process for producing tobermorite and ettringite
    Patent number: 4243429
    Abstract: A lime material and a siliceous material containing 10 to 40% by weight of alumina are admixed with an alkali solution, and the mixture is subjected to hydrothermal reaction with saturated water vapor at 4 to 40 kg/cm.sup.2 to form tobermorite. The reaction mixture is filtered to separate the tobermorite therefrom. A lime material and a gypsum material are added to the resulting filtrate, and the mixture is reacted at room temperature to a temperature of 90.degree. C. to form ettringite. The alkali filtrate separated from the ettringite is reused for the production of tobermorite.
    Type: Grant
    Filed: June 22, 1979
    Date of Patent: January 6, 1981
    Assignee: Kubota Ltd.
    Inventors: Hideo Tamura, Seiro Ibuki