Patents by Inventor Atsumu Tsunashima

Atsumu Tsunashima 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).

  • Method of producing kenyaite-type phyllosilicate
    Patent number: 5160718
    Abstract: A kenyaite-type phyllosilicate having a crystallographically single phase is produced by hydrothermally reacting a mixture containing amorphous silica, a sodium compound, a potassium compound and water at a tempeature of 100.degree.-180.degree. C. wherein the mixture has a composition providing the following molar ratios:H.sub.2 O/SiO.sub.2 : 15-20,sodium compound/SiO.sub.2 : 0.18-0.30potassium compound/SiO.sub.2 : 0.005-0.30sodium compound/potassium compound: 1.1-25.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: November 3, 1992
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Katsunori Kosuge, Atsumu Tsunashima