Patents by Inventor Tarmo Syv apuro

Tarmo Syv apuro 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).

  • Process for treating waste water
    Patent number: 5611928
    Abstract: The invention relates to a process for the treatment of waste waters of the forest industry. According to the invention, waste water is pre-treated biologically, whereafter the further treatment is carried out by using Fe(II) salt and hydrogen peroxide.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: March 18, 1997
    Assignees: Kemira Oy, Oy Keskuslaboratorio-Central Laboratorium AB
    Inventors: Martti Savolainen, Tarmo Syv apuro, Eija Laine