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Class Information
Number: 114/40
Name: Ships > Ice breakers
Description: Vessels or boats designed and operated to break and cut up ice-floes or to open channels for the passage of vessels.










Sub-classes under this class:

Class Number Class Name Patents
114/42 Cutters 27
114/41 Rams 13


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8689713 Method for improving the ice-breaking properties of a water craft and a water craft constructed according to the method Apr. 8, 2014
8523483 Ice break-up using artificially generated waves Sep. 3, 2013
8430044 Vehicle Apr. 30, 2013
8347801 Floating support for oil production fitted with pack ice destruction devices, and an associated method Jan. 8, 2013
8141508 Barge arrangement and method for operation of a barge arrangement Mar. 27, 2012
8085617 System and method for reducing the effects of ghosts from the air-water interface in marine seismic exploration Dec. 27, 2011
7958835 Offshore floating production, storage, and off-loading vessel for use in ice-covered and clear water applications Jun. 14, 2011
7850398 Jackup oil rig and similar platforms Dec. 14, 2010
7779771 Method for breaking ice, motor-driven watercraft and its use Aug. 24, 2010
7712424 Multi-hull vessel adapted for ice-breaking May. 11, 2010
7681511 System for loading and unloading of hydrocarbons in ice prone waters Mar. 23, 2010
7270066 Ice breaker (variants), method and system for single-support mooring and servicing ships Sep. 18, 2007
7150239 Method for aerating bodies of water Dec. 19, 2006
7150434 Vehicle wake vortex modifier Dec. 19, 2006
6062925 Service vessel operating method May. 16, 2000
5996520 Icebreaking method and icebreaker Dec. 7, 1999
5660131 Icebreaker attachment Aug. 26, 1997
5567078 Method for forming a sloped face ice control structure Oct. 22, 1996
5325803 Icebreaking ship Jul. 5, 1994
5231944 Icebreaking ship Aug. 3, 1993
5218917 Icebreaking ship Jun. 15, 1993
5176092 Icebreaker bow and hull form Jan. 5, 1993
5161477 Ice going ship Nov. 10, 1992
5038695 Icebreaker Aug. 13, 1991
5036781 Method and the means for removing ice from a ship's channel Aug. 6, 1991
4942837 Ice breaker Jul. 24, 1990
4864950 Icebreaker Sep. 12, 1989
4860679 Ice breaker vessel Aug. 29, 1989
4800831 Ice breaker Jan. 31, 1989
4781135 Ship hull Nov. 1, 1988
4732101 Stern apron for ice breakers Mar. 22, 1988
4715305 Ship's hull Dec. 29, 1987
4702187 Bottom construction for a ship Oct. 27, 1987
4666341 Mobile sea barge and plateform May. 19, 1987
4648342 Arrangement in vessels Mar. 10, 1987
4644889 Sailboat keel Feb. 24, 1987
4643121 Method of adding propulsive force to ice breaker Feb. 17, 1987
4636607 Method of enhancing an ice-breaking operation Jan. 13, 1987
4597350 Mooring system and liquid cargo transfer facility for ice infested waters Jul. 1, 1986
4596291 Floating drilling platform Jun. 24, 1986
4578000 Method of protection Mar. 25, 1986
4546719 Arrangement in vessels Oct. 15, 1985
4547093 Protection of vessels and equipment from moving ice Oct. 15, 1985
4543900 Shipboard ice lubrication system and jet pump for use therein Oct. 1, 1985
4532772 Method for producing model ice Aug. 6, 1985
4522141 Shipboard ice lubrication system and jet pump for use therein Jun. 11, 1985
4519728 Floating offshore structure May. 28, 1985
4455958 Drillship canopy Jun. 26, 1984
4436046 Ice-breaking hull Mar. 13, 1984
4434741 Arctic barge drilling unit Mar. 6, 1984

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