Patents by Inventor Takayasu Itoh

Takayasu Itoh 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).

  • Cement composition and process for producing cement composition
    Patent number: 8641819
    Abstract: A cement composition, and a process for producing a cement composition, wherein the cement composition has the Sr content of 0.065 mass % to 1.0 mass % and the MgO content of greater than 1.0 mass % to 3.0 mass %. The process for producing a cement composition comprises a step (A) of adjusting the basic raw material units of raw materials selected from the group consisting of limestone, silica stone, coal ash, clay, blast furnace slag, soil generated by construction work, sewage sludge, hydrocake and iron sources so that the cement composition has the Sr content of 0.065 mass % to 1.0 mass % and the MgO content of greater than 1.0 mass % to 3.0 mass %, blending the adjusted raw materials and burning to produce cement clinker, and a step (B) of mixing the cement clinker with gypsum and an admixture of limestone and blast furnace slag followed by grinding.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 4, 2014
    Assignee: UBE Industries, Ltd.
    Inventors: Norihiko Sawabe, Hitoshi Tonokohchi, Takayasu Itoh, Hiroshi Mikami
  • CEMENT COMPOSITION AND PROCESS FOR PRODUCING CEMENT COMPOSITION
    Publication number: 20130068140
    Abstract: A cement composition, and a process for producing a cement composition, wherein the cement composition has the Sr content of 0.065 mass % to 1.0 mass % and the MgO content of greater than 1.0 mass % to 3.0 mass %. The process for producing a cement composition comprises a step (A) of adjusting the basic raw material units of raw materials selected from the group consisting of limestone, silica stone, coal ash, clay, blast furnace slag, soil generated by construction work, sewage sludge, hydrocake and iron sources so that the cement composition has the Sr content of 0.065 mass % to 1.0 mass % and the MgO content of greater than 1.0 mass % to 3.0 mass %, blending the adjusted raw materials and burning to produce cement clinker, and a step (B) of mixing the cement clinker with gypsum and an admixture of limestone and blast furnace slag followed by grinding.
    Type: Application
    Filed: May 24, 2011
    Publication date: March 21, 2013
    Applicant: UBE Industries, Ltd.
    Inventors: Norihiko Sawabe, Hitoshi Tonokohchi, Takayasu Itoh, Hiroshi Mikami