Patents by Inventor Jaako Raukola

Jaako Raukola 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).

  • Procedure for the manufacture of a foamed plastic product
    Patent number: 5955014
    Abstract: A process for fabricating a foamed plastic product. The process includes a plastic film that is prefoamed in order to introduce lamellar discontinuities such as prefoamed bubbles. The film is pressurized by a gas under a positive pressure causing the gas to diffuse into the film, forming a second film. Further, the second film is inflated in order to form the foamed plastic product. The second film is inflated by heating the second film at a temperature below the melting point of the second film and under a reduced pressure.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: September 21, 1999
    Assignee: VTT Technology OY
    Inventors: Jaako Raukola, Kari Kirjavainen, Hannu Minkkinen