Patents by Inventor Akinari Sonoda

Akinari Sonoda 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 reducing impurity content in aqueous salt solution
    Publication number: 20070029259
    Abstract: A method in which an aqueous water-soluble compound solution containing at least one impurity in a slight amount is passed through a column packed with an adsorbent onto which the impurity is selectively adsorbed to thereby remove the impurity from the aqueous solution, wherein an abnormal phenomenon in adsorption chromatography is caused to obtain an elute fraction having a higher concentration of the trace impurity than the raw solution and this fraction is removed. Thus, the trace impurity can be efficiently removed and the water-soluble compound can be obtained in a high-purity state. Applying this method to aqueous sodium chloride solutions gives sodium chloride crystals reduced in impurity concentration. Dissolving such sodium chloride crystals, which have a low potassium ion concentration, in water provides an aqueous sodium chloride solution for medical use.
    Type: Application
    Filed: February 4, 2004
    Publication date: February 8, 2007
    Inventors: Hirotaka Kakita, Akinari Sonoda, Kazutoshi Yoshihara, Hiroshi Kamishima, Takahiro Hirotsu, Kenta Ooi, Kazuyuki Takashima, Tetuo Iwasaki, Eiji Santoki
  • Biocidal material and biocidal method
    Publication number: 20010019727
    Abstract: A biocidal material comprising, as an active ingredient, a compound represented by General Formula (1)
    Type: Application
    Filed: December 13, 2000
    Publication date: September 6, 2001
    Applicant: Secretary, Agency of Industrial Science and Technology & Tomita Pharmaceutical Co., Ltd.
    Inventors: Yoji Makita, Osamu Ikai, Kenta Ooi, Akinari Sonoda, Masahito Taya, Motomu Nishioka, Akira Ookubo, Mikiko Mihara