Patents by Inventor Miyuki Imai

Miyuki Imai 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 removal of Mn from cobalt sulfate solutions
    Patent number: 7052528
    Abstract: The present invention provides a method for the removal of substantially all the amount of Mn contained in cobalt containing solution thereby to obtain purified cobalt solution with Mn content of 10 ppm or less and specifically a method for removing Mn from cobalt sulfate solution comprising the steps of adjusting pH of the solution within the range of 3–6 and then adding the NaOCl to the solution to obtain an oxidation-reduction potential in the range of 1100 to 1300 mV, with respect to standard hydrogen electrode (SHE); and removing Mn precipitate from thus treated solution.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: May 30, 2006
    Assignee: Seido Chemical Industry Company, Ltd.
    Inventors: Juraj Babjak, Miyuki Imai, Tomoaki Kikkawa
  • Method for removal of Mn from cobalt sulfate solutions
    Publication number: 20050120828
    Abstract: The present invention provides a method for the removal of substantially all the amount of Mn contained in cobalt containing solution thereby to obtain purified cobalt solution with Mn content of 10 ppm or less and specifically a method for removing Mn from cobalt sulfate solution comprising the steps of adjusting pH of the solution within the range of 3-6 and then adding the NaOCl to the solution to obtain an oxidation-reduction potential in the range of 1100 to 1300 mV, with respect to standard hydrogen electrode (SHE); and removing Mn precipitate from thus treated solution.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 9, 2005
    Inventors: Juraj Babjak, Miyuki Imai, Tomoaki Kikkawa