Patents by Inventor Kiochi Usui

Kiochi Usui 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).

  • Synthetic lamellar magnesium phyllosilicate and process for preparation thereof
    Patent number: 4830843
    Abstract: A synthetic lamellar magnesium phyllosilicate has as the main component a composition represented by the following formula:Mg.sub.3 Si.sub.4 O.sub.10 (OH).sub.2.nH.sub.2 O (1)wherein n is a number of up to 5, and has X-ray diffraction peaks at spacings of 4.5-4.6 .ANG., 2.5-2.6 .ANG. and 1.5-1.6 .ANG., wherein the lamination asymmetry index (Is) defined by the following formula:Is=tan .theta..sub.2 /tan .theta..sub.1 (2)wherein.theta..sub.1 stands for the angle formed by the peak perpendicular and the peak tangent on the small diffraction angle side in said X-ray diffraction peak at a spacing of 4.5-4.6 .ANG., and.theta..sub.2 stands for the angle formed by the peak perpendicular and the peak tangent on the large diffraction angle side in said X-ray diffraction peak,is at least 3.0, the BET specific surface area is at least 300 m.sup.2 /g and the Methylene Blue decolorizing power (JIS K-1470) is at least 100 ml/g.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: May 16, 1989
    Assignee: Mizusawa Industrial Chemicals, Ltd.
    Inventors: Kiochi Usui, Teiji Sato, Masanori Tanaka, Noriyuki Takahashi