Patents by Inventor Akifumi Sekitani

Akifumi Sekitani 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).

  • Basic magnesium sulfate granule, and process for production thereof
    Patent number: 8178069
    Abstract: Basic magnesium sulfate granules having a bulk density of 0.5-1.0 g/cm3, a mean crushing strength of 700-900 g and a water content of 3 wt. % or less which comprises agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles in a weight ratio of 95:5 to 70:30, wherein the fibrous basic magnesium sulfate particles have a mean length of 5-200 ?m and a mean thickness of 0.2-1.0 ?m and the fibrous xonotolite particles have a mean length less than that of the fibrous magnesium sulfate particles. The basic magnesium sulfate granules can be produced by drying a water-containing granular composition comprising agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles which have a water content of 40 to 60 wt. % for 36 hours or more, thereby obtaining a granular composition having a water content of 3 wt. % or less.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: May 15, 2012
    Assignee: Ube Material Industries, Ltd.
    Inventors: Shinichi Yamamoto, Akifumi Sekitani
  • BASIC MAGNESIUM SULFATE GRANULE, AND PROCESS FOR PRODUCTION THEREOF
    Publication number: 20110042297
    Abstract: Basic magnesium sulfate granules having a bulk density of 0.5-1.0 g/cm3, a mean crushing strength of 700-900 g and a water content of 3 wt. % or less which comprises agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles in a weight ratio of 95:5 to 70:30, wherein the fibrous basic magnesium sulfate particles have a mean length of 5-200 ?m and a mean thickness of 0.2-1.0 ?m and the fibrous xonotolite particles have a mean length less than that of the fibrous magnesium sulfate particles. The basic magnesium sulfate granules can be produced by drying a water-containing granular composition comprising agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles which have a water content of 40 to 60 wt. % for 36 hours or more, thereby obtaining a granular composition having a water content of 3 wt. % or less.
    Type: Application
    Filed: April 28, 2009
    Publication date: February 24, 2011
    Applicant: UBE MATERIAL INDUSTRIES, LTD.
    Inventors: Shinichi Yamamoto, Akifumi Sekitani