Patents by Inventor Tsuneyasu Adachi

Tsuneyasu Adachi 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 removing water soluble macromolecular compounds
    Patent number: 6071417
    Abstract: A method for removing water-soluble macromolecular compounds is characterized by addition of alkali polyphosphates to an aqueous solution containing residual amounts of cationic, anionic, or amphoteric water-soluble macromolecular compounds, formation of insoluble complexes of the alkali polyphosphate and the water-soluble macromolecular complexes, and separation of the resulting complexes from the aqueous solution. This method does not affect the quality or yield of other important components in the aqueous solution.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: June 6, 2000
    Assignee: Kurita Water Industries, Ltd.
    Inventor: Tsuneyasu Adachi
  • Method of removing endotoxin
    Patent number: 5169535
    Abstract: A method of removing endotoxin from a solution containing only endotoxin as a absorbed material, wherein the pH value of the solution is adjusted to pH 9 or lower than it, and subsequently, the solution is passed through a column packed with a crosslinked granular chitosan.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: December 8, 1992
    Assignee: Kurita Water Industries Ltd.
    Inventors: Tsuneyasu Adachi, Junichi Ida, Masanori Hashimoto