Patents by Inventor Akiji Sekiguchi

Akiji Sekiguchi 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 for making alkanol-or alkane-sulfone plumbate
    Patent number: 6242624
    Abstract: An object of the present invention is to provide a method for obtaining alkanol-sulfonic or alkane-sulfonic plumbates efficiently by improving the solubility of lead oxide compound such as Pb3O4 or PbO2 that are difficult to dissolve in alkanol-sulfonic acid or alkane-sulfonic acid. The method involves reacting difficult-to-dissolve lead oxide compound with a solution of alkanol-sulfonic or alkane-sulfonic acid, wherein a phenol compound is contained in the solution.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: June 5, 2001
    Assignee: Ebara Corporation
    Inventors: Junichiro Yoshioka, Hiroaki Inoue, Kanji Ohno, Akiji Sekiguchi