TREA

Erkki Ranki

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  • Helsinki, FI
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Patents Grantslast 30 patents

  • Information Patent Grant

    Watercraft with improved characteristics for travel in ice
    • Patent number 9,352,806
    • Issue date May 31, 2016
    • AKER ARCTIC TECHNOLOGY OY
    • Erkki Ranki
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Icebreaking method and icebreaker
    • Patent number 5,996,520
    • Issue date Dec 7, 1999
    • Kvaerner Masa-Yards Oy
    • Matti Arpiainen
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Ship propulsion arrangement
    • Patent number 5,403,216
    • Issue date Apr 4, 1995
    • Kvaerner Masa-Yards Oy
    • Pekka Salmi
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents