Patents by Inventor Raili Kaarina Virtanen

Raili Kaarina Virtanen 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).

  • Foaming method and device
    Patent number: 7513488
    Abstract: The invention relates to a method and a device for foaming glue for the production of wood-based sheets. Gluing substance and gas are fed (1,2) into the foaming device through nozzles (3,4), which are directed to mix the gluing substance and gas to be fed to form an essentially homogenous mixture prior to foaming. After this the gluing substance is foamed mechanically in the foaming chamber (5) with the aid of gas.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: April 7, 2009
    Assignee: Raute Oyj
    Inventors: Raili Kaarina Virtanen, legal representative, Jouni Rainio, Matti Virtanen
  • Foaming method and device
    Patent number: 7132023
    Abstract: The invention relates to a method and a device for foaming glue for the production of wood-based sheets. Gluing substance and gas are fed (1,2) into the foaming device through nozzles (3,4), which are directed to mix the gluing substance and gas to be fed to form an essentially homogenous mixture prior to foaming. After this the gluing substance is foamed mechanically in the foaming chamber (5) with the aid of gas.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: November 7, 2006
    Assignee: Raute Oyj
    Inventors: Raili Kaarina Virtanen, legal representative, Jouni Rainio, Matti Virtanen, deceased
  • Foaming method and device
    Publication number: 20040213079
    Abstract: The invention relates to a method and a device for foaming glue for the production of wood-based sheets. Gluing substance and gas are fed (1,2) into the foaming device through nozzles (3,4), which are directed to mix the gluing substance and gas to be fed to form an essentially homogenous mixture prior to foaming. After this the gluing substance is foamed mechanically in the foaming chamber (5) with the aid of gas.
    Type: Application
    Filed: December 31, 2003
    Publication date: October 28, 2004
    Applicant: RAUTE OYJ
    Inventors: Matti Virtanen, Jouni Rainio, Raili Kaarina Virtanen