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Class Information
Number: 405/205
Name: Hydraulic and earth engineering > Marine structure or fabrication thereof > Floatable to site and supported by marine floor > With ballasting means to sink or position structure at site
Description: Method or apparatus wherein the construction includes or has attached thereto one or more buoyant compartments into which a material is selectively introduced to decrease the buoyancy of said compartment(s), whereby the construction can be submerged or its orientation can be regulated.

Sub-classes under this class:

Class Number Class Name Patents
405/207 Compartment in base 75
405/206 Detachable from structure 47

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8689881 Offshore unit and method of installing wellhead platform using the offshore unit Apr. 8, 2014
8684630 Underwater reinforced concrete silo for oil drilling and production applications Apr. 1, 2014
8678707 Well-head blowout containment system Mar. 25, 2014
8657533 Gravity base structure Feb. 25, 2014
8647017 Gravity base structure Feb. 11, 2014
8573891 Tension buoyant tower Nov. 5, 2013
8534958 Offshore station, foundation for an offshore station, and method for building an offshore station Sep. 17, 2013
8534365 Apparatus and method for undersea oil leakage containment Sep. 17, 2013
8403058 Offshore unit and method of installing wellhead platform using the offshore unit Mar. 26, 2013
8398338 Method for installing a topside module on an offshore support structure Mar. 19, 2013
8376658 Harbor Feb. 19, 2013
8312828 Preloading to reduce loads and save steel on topsides and grillage of catamaran systems Nov. 20, 2012
8297885 Method of erecting a building structure in a water basin Oct. 30, 2012
8282316 Method and assembly for installing oilfield equipment at the water bottom Oct. 9, 2012
8251615 System and method for releasing a barge from a topside during a float-over installation Aug. 28, 2012
8231308 Hybrid riser tower and method of installation thereof Jul. 31, 2012
8057127 Systems and methods for assembling an offshore support system for use with a wind turbine Nov. 15, 2011
8025020 Auxiliary float of floating structure and method for remodeling floating structure Sep. 27, 2011
8007204 Floating structure for support of mixed use facilities Aug. 30, 2011
7978806 Seafloor power station Jul. 12, 2011
7958835 Offshore floating production, storage, and off-loading vessel for use in ice-covered and clear water applications Jun. 14, 2011
7958836 Stabilizing chamber for use with a mobile offshore unit Jun. 14, 2011
7887261 Method for the transport of a civil engineering structure in an aquatic medium Feb. 15, 2011
7871222 Truss semi-submersible offshore floating structure Jan. 18, 2011
7686543 System for mounting equipment and structures offshore Mar. 30, 2010
7565877 Spar platform having closed centerwell Jul. 28, 2009
7553106 Method for making a floating offshore drilling/producing structure Jun. 30, 2009
7470086 Submersible tethered platform for undersea electrical power generation Dec. 30, 2008
7311469 Floating lowering and lifting device Dec. 25, 2007
7255517 Ballasting offshore platform with buoy assistance Aug. 14, 2007
7197999 Spar disconnect system Apr. 3, 2007
7114884 Method and apparatus for increasing floating platform buoyancy Oct. 3, 2006
7086810 Floating structure Aug. 8, 2006
7033115 Temporary floatation stabilization device and method Apr. 25, 2006
7011472 Semi-submersible offshore vessel Mar. 14, 2006
7001108 Mat supported offshore structure Feb. 21, 2006
6981823 Method and arrangement for installation and removal of objects at sea Jan. 3, 2006
6968797 Method for installing a self-floating deck structure onto a buoyant substructure Nov. 29, 2005
6945737 Single column extendable draft offshore platform Sep. 20, 2005
6945736 Offshore platform for drilling after or production of hydrocarbons Sep. 20, 2005
6942427 Column-stabilized floating structure with telescopic keel tank for offshore applications and method of installation Sep. 13, 2005
6935810 Semi-submersible multicolumn floating offshore platform Aug. 30, 2005
6932542 Tension leg platform having a lateral mooring system and methods for using and installing same Aug. 23, 2005
6899492 Jacket frame floating structures with buoyancy capsules May. 31, 2005
6869251 Marine buoy for offshore support Mar. 22, 2005
6854933 Vertically restrained centerwell SPAR Feb. 15, 2005
6840713 Device for positioning and lifting a marine structure, particularly a platform deck Jan. 11, 2005
6830413 Ballast system for tension leg platform Dec. 14, 2004
6786679 Floating stability device for offshore platform Sep. 7, 2004
6761508 Satellite separator platform(SSP) Jul. 13, 2004

1 2 3 4 5

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