Patents by Inventor Petri Päivä

Petri Päivä 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).

  • On-line measurement for a pressure profile
    Patent number: 7584674
    Abstract: A method for measuring a nip pressure and/or a pressure profile is provided, wherein a nip-forming roll is fitted with a pressure sensor under a coating layer which is protective and functions as a spring on top of the sensor, and the nip pressure delivers to the bottom surface of the coating a deformation proportional to the nip pressure and the deformation compresses the sensor, which responds to the deformation by generating an electric signal.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: September 8, 2009
    Assignee: Metso Paper, Inc.
    Inventors: Matti Innala, Tatu Pitkänen, Petteri Lannes, Topi Tynkkynen, Petri Päivä, Marko Tiilikainen