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Class Information
Number: 405/171
Name: Hydraulic and earth engineering > Subterranean or submarine pipe or cable laying, retrieving, manipulating, or treating > Submerging, raising, or manipulating line of pipe or cable in or from marine environment > By control of buoyancy
Description: Method or apparatus wherein the string or conduit is at least partially floatable, and is properly placed by regulating the floatability thereof.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8668406 Subsea cable installation Mar. 11, 2014
8662111 Economical heavy concrete weight coating for submarine pipelines Mar. 4, 2014
8647016 Submarine pipeline towing equipment, system and process Feb. 11, 2014
8622137 Subsea structure installation or removal Jan. 7, 2014
8596913 Free standing steel catenary risers Dec. 3, 2013
8573888 Method and apparatus for mounting distributed buoyancy modules on a rigid pipeline Nov. 5, 2013
8469634 Method and system of depth triggers for marine geophysical survey cable retriever systems Jun. 25, 2013
8444345 Floatation collar for protecting and positioning a sensor package May. 21, 2013
8322438 Riser buoyancy adjustable thrust column Dec. 4, 2012
8282315 Method of installing an underwater riser Oct. 9, 2012
8235628 Continuously pressurized pipeline Aug. 7, 2012
8186910 Universal method and apparatus for deploying flying leads May. 29, 2012
8172481 Method of installing a tubular undersea pipeline May. 8, 2012
8152411 Guide arrangement Apr. 10, 2012
8142108 Riser installation method from an offshore production unit Mar. 27, 2012
8100606 Stabilizing of submarine elongate structures Jan. 24, 2012
8092119 Pipeline buoyancy control assembly and tiedown Jan. 10, 2012
8075223 Deployment system for fiber-optic line sensors Dec. 13, 2011
8066450 Device and method for the towing of underwater pipelines Nov. 29, 2011
8047297 System for and method of restraining a subsurface exploration and production system Nov. 1, 2011
8007203 Method and installation for connecting a rigid submarine pipe and a flexible submarine pipe Aug. 30, 2011
7985036 Process, system and equipment for the towing of underwater pipelines Jul. 26, 2011
7963721 Distributed buoyancy subsea pipeline apparatus and method Jun. 21, 2011
7862256 Pipeline weighting device and method Jan. 4, 2011
7766046 Plugging system for use during an offshore pipeline laying operation Aug. 3, 2010
7749035 Buoyancy clamp and method of application Jul. 6, 2010
7744314 Clamping device for buoyancy bodies Jun. 29, 2010
7677837 Device for transferring fluid between two floating supports Mar. 16, 2010
7470088 Method and apparatus for laying a pipeline Dec. 30, 2008
7383885 Floatation module and method Jun. 10, 2008
7287936 Shallow water riser configuration Oct. 30, 2007
7112008 Floating construction for launching pipelines even in low-depth conditions Sep. 26, 2006
7097387 Engineered material buoyancy system and device Aug. 29, 2006
7073978 Lightweight catenary system Jul. 11, 2006
7044228 Flowline jumper for subsea well May. 16, 2006
7025535 Seafloor/surface connecting installation for a submarine pipeline which is connected to a riser by means of at least one elbow pipe element that is supported by a base Apr. 11, 2006
7025533 Concentrated buoyancy subsea pipeline apparatus and method Apr. 11, 2006
6978804 Systems and methods for pipeline rehabilitation Dec. 27, 2005
6854516 Riser buoyancy system Feb. 15, 2005
6848863 Engineered material buoyancy system and device Feb. 1, 2005
6764365 Buoyancy control systems for tubes Jul. 20, 2004
6742594 Flowline jumper for subsea well Jun. 1, 2004
6715962 Assembly and floatation method for drilling drivepipe Apr. 6, 2004
6682266 Tension leg and method for transport, installation and removal of tension legs pipelines and slender bodies Jan. 27, 2004
6663453 Buoyancy control systems for tubes Dec. 16, 2003
6637513 Riser pipe construction and module therefor Oct. 28, 2003
6579040 Method and apparatus for air can vent systems Jun. 17, 2003
6540440 Method and means for storing and/or transporting an elongated tube or cable Apr. 1, 2003
6503115 Flexible buoy assembly Jan. 7, 2003
6461079 System for controlled lowering of a tube or cable Oct. 8, 2002

1 2 3 4

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