Patents by Inventor Martti Kahkonen

Martti Kahkonen 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).

  • Publication number: 20060096961
    Abstract: The invention relates to a method for manufacturing a wire used in standard freeness measuring of paper stock and a wire according to the manufacturing method. In the solution, a means for producing holes (210), which is something else than a solid, is directed on a wire plate (18) at areas intended for desired holes (210). The wire plate (18) is provided with the holes using the means for producing holes (210).
    Type: Application
    Filed: May 14, 2003
    Publication date: May 11, 2006
    Applicant: Metso Automation Oy
    Inventors: Martti Kahkonen, Timo Sirvio, Arja Keikanen, Juha Vainikainen
  • Patent number: 6523395
    Abstract: The invention relates to a method and measuring apparatus for measuring freeness. Freeness is measured with the help of an automatic data processing apparatus (30) so that the flow rate of a liquid draining from a measuring chamber (10) is measured using the measuring apparatus (12) until the flow rate is equal to or lower than a predefined flow rate.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: February 25, 2003
    Assignee: Metso Automation Oy
    Inventor: Martti Kähkönen