Icebreaking ship
CA 2095871 C · Owner: Hellmann, Jens-Holger · Inventors: Jans, Peter; Hellmann, Jens-Holger; Rupp, Karl-Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To improve the maneuverability of an icebreaker whose forward quarter ie designed like a pontoon with an underside rising obliquely forward, which bears icebreaking means on its sides, the hull is equipped on both sides over the entire length of the ship with balcony-like flanks, whose balcony undersides drop off obliquely downward and lie in the level of the water line, such that with the turning of the ship they break of the, edges of the ice. Furthermore the underside of the bow in the, vicinity of the icebreaking means is designed wider than the water line of the afterbody, to thus provide a clearance between the edges of the ice and the hull.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 10, 1993 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.