Patents Assigned to Nopon Oy
  • Disc diffuser
    Patent number: D371187
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: June 25, 1996
    Assignee: Nopon Oy
    Inventor: Hannu Ryynanen
  • Diffuser for water aeration
    Patent number: D386243
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: November 11, 1997
    Assignee: Nopon Oy
    Inventors: Magnus Hasto, Hannu Kahonen, Hannu Ryynanen