Patents by Inventor Jyri J{umlaut over (a)}rvenkyl{umlaut over (a)}

Jyri J{umlaut over (a)}rvenkyl{umlaut over (a)} 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).

  • Co-extruder multilayer plastic pipe, method for producing the same, and device therefor
    Patent number: 6176269
    Abstract: The invention relates to a co-extruded multilayer plastic pipe comprising an inner pipe and an outer pipe and between them a middle layer of a softer material than the inner pipe. The invention also relates to a method of producing a co-extruded multilayer pipe in a multilayer extruder, and an apparatus for producing the co-extruded multilayer pipe.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: January 23, 2001
    Assignee: Uponor Innovation AB
    Inventor: Jyri J{umlaut over (a)}rvenkyl{umlaut over (a)}
  • Multi-layer reinforced and stabilized cable construction
    Patent number: 6178277
    Abstract: A multi-layer reinforced and stabilized cable construction comprising a core portion (1, 11) and a non-metallic sheathing portion having barrier and protective layers and two or more outer reinforcement layers. In order for the mechanical and barrier properties of the cable to be controlled, the barrier and protective layers and/or the reinforcement layers (12, 13) are oriented in a controlled manner at different angles by fibrous reinforcements or lamellar barriers.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: January 23, 2001
    Assignee: NK Cables OY
    Inventors: Jussi Ravela, Markku T. Suvanto, Vesa Tuunanen, Markku Heino, Jyri J{umlaut over (a)}rvenkyl{umlaut over (a)}, Kari Kirjavainen