| Patents for F16L 1 - Laying or reclaiming pipes; Repairing or joining pipes on or under water (7,464) |
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| 04/26/1990 | DE3835901A1 Verfahren zum austausch einer im erdboden verlegten rohrleitung A method for exchange of a laid in the ground pipeline |
| 04/25/1990 | EP0365156A2 Pipe liner and method of installation thereof |
| 04/25/1990 | EP0279812B1 Method for restoring underground pipelines |
| 04/17/1990 | US4917540 Pipeline laying system and vessel with pipeline straightening and tensioning device |
| 04/11/1990 | CN1007550B Fabricating helical flowling bundles |
| 04/10/1990 | US4915422 Pipe coupling |
| 04/10/1990 | US4914939 Self propelled internal pipe arching apparatus |
| 04/05/1990 | WO1990003260A1 Pipe liner and method of installation thereof |
| 04/03/1990 | US4913588 Method and means for providing a thermic insulating effect around an article, such as a pipeline which is submerged in water |
| 04/03/1990 | US4913080 Method for production and laying a pipeline or a cable under water |
| 03/29/1990 | DE3932106A1 Verfahren und vorrichtung zum einbau eines neuen rohrs in eine vorhandene, unterirdische leitung Method and device for installation of a new pipe into an existing underground pipeline |
| 03/28/1990 | EP0359988A2 Sealing connection between two curved wals with transition to a straight wall |
| 03/21/1990 | EP0359392A1 Pipeline repair system |
| 03/20/1990 | US4909670 Submarine pipeline span correction by local axial tension release |
| 03/20/1990 | US4909669 Pipeline joint protector |
| 03/07/1990 | CN1040259A Method for quick and easy repairing burst of submerged steel pipe |
| 03/06/1990 | US4906137 Apparatus for transferring fluid between subsea floor and the surface |
| 03/06/1990 | US4906136 Method for connecting a conduit to a subsea structure, and a device for use in connecting a conduit end to a subsea structure |
| 02/28/1990 | EP0355588A2 Stepwise rotation device for an element especially a screw of a two piece connection part for the coupling of two conduits under water |
| 02/22/1990 | WO1990001584A1 Seabed stabilisation mattresses |
| 02/08/1990 | DE3923957A1 Vorrichtung und verfahren zur fernausloesung einer serie von klemmschellen an einer unterwassereinrichtung Apparatus and method for fernausloesung a series of clamping ring on a underwater device |
| 02/06/1990 | US4898498 Thrust transmitting device |
| 02/06/1990 | US4898497 Method for cementitious coating of pipe and forms for use therewith |
| 02/06/1990 | US4897911 Method of placing plastic tubes into existing openings |
| 01/31/1990 | CN1039296A Apparatus for conveying liquid between bottom and surface of sea |
| 01/30/1990 | US4896998 Submarine cable plough |
| 01/24/1990 | CN1006569B Reel type continuous marine pipe lying system |
| 01/23/1990 | CA1264528A1 Method and apparatus for joining pipe |
| 01/16/1990 | US4893393 Pipe fitting assembly tool |
| 01/16/1990 | CA1264447A1 Pipeline, a method of laying the pipeline and a device for effecting said method |
| 01/16/1990 | CA1264439A1 Production riser weight compensation device by means of floating bodies |
| 12/28/1989 | DE3832214C1 Process for exchanging a buried pipeline, and apparatus for carrying out the process |
| 12/26/1989 | US4889450 Guidance and protection system for the laying of pipes |
| 12/20/1989 | CN1038151A Lining of pipes |
| 12/19/1989 | US4887931 Method and apparatus for towing subsea pipeline sections |
| 12/14/1989 | WO1989012198A1 Pipe for relining underground pipelines |
| 12/13/1989 | EP0345945A1 Method and apparatus for laying pipes in the ground with advance of propulsion shafts installed with pipe-supporting attachments |
| 11/28/1989 | CA1263245A1 Process for the launching from the mainland of large- size submarine pipelines, in particular for intake installations |
| 11/22/1989 | CN1037384A Non-ditch technology and mechanical tools for laying long pipeline |
| 11/16/1989 | WO1989011060A1 Rehabilitating underground pipes |
| 11/16/1989 | WO1989011055A1 Concrete anchoring weight block |
| 11/15/1989 | EP0341940A1 Method for the lining of existing pipes |
| 11/07/1989 | US4879162 Durability |
| 11/07/1989 | US4878694 Method and device for the remote positioning of an elbow coupling |
| 10/11/1989 | EP0336492A1 A method of drilling and/or production of oil and/or gas |
| 10/10/1989 | US4873533 Marker for locating a buried object |
| 10/10/1989 | US4872424 Intake manifold with removable baffles |
| 10/04/1989 | EP0335802A1 Device for controlling the laying of a cable or flexible pipeline in deep water |
| 09/26/1989 | US4869294 Buried large cross-section conduit |
| 09/26/1989 | US4868964 Apparatus for joining pipe |
| 09/26/1989 | CA1260721A1 Erosion control apparatus and method |
| 09/19/1989 | US4867921 Process for installing a new pipe inside an existing pipeline |
| 09/12/1989 | US4865359 Press fit pipe joint and method |
| 09/07/1989 | DE3446201A1 Process and device for the underground production of plastic pipelines in non-accessible tunnel cross-sections |
| 09/05/1989 | CA1259077A1 Fired hollow ceramic spheroids |
| 08/31/1989 | DE3805160A1 Process for the underground connection of a product pipe to a collector, in particular in the region in which it is not possible to walk |
| 08/30/1989 | EP0330584A1 Divice for transferring fluids between the sea bottom and the surface |
| 08/30/1989 | EP0329896A1 Subsea pipeline method and apparatus |
| 08/10/1989 | WO1989007178A1 Method and device for trench-free laying of pipelines |
| 08/01/1989 | CA1257974A1 Device for stopping the pay-out of elongated bodies such as cables |
| 07/19/1989 | EP0324287A1 Pipe burster |
| 07/18/1989 | US4848949 Device and method for remotely positioning and connecting an end of an elongate element to a connector |
| 07/18/1989 | CA1257483A1 Method for restoring underground pipelines |
| 07/12/1989 | EP0323873A1 Connecting tube assembly between a conduit floating on the surface of the water and a conduit present on a vessel |
| 07/04/1989 | US4844657 Pipe supporting dam assembly for pipeline construction and method |
| 07/04/1989 | US4843713 Apparatus for making helical flowline bundles |
| 06/27/1989 | US4842445 Covering structure intended especially to be placed on a conduit or the like laid on the ocean floor |
| 06/27/1989 | US4842075 Subsea flowline connection system |
| 06/15/1989 | DE3835900A1 Verfahren sowie vorrichtung zum austausch einer im erdreich verlegten rohrleitung Method and device for exchange of a laid in the ground-pipeline |
| 06/14/1989 | EP0319724A1 Thrust transmitting device |
| 06/14/1989 | EP0319667A2 Pipe propelling apparatus |
| 06/06/1989 | US4836595 Pipe handling apparatus |
| 06/06/1989 | CA1255108A1 Method for preventing thaw settlement along offshore arctic pipelines |
| 05/23/1989 | US4832530 Apparatus and method for joining pipe sections underwater |
| 05/23/1989 | US4832263 Self propelled field irrigator |
| 05/23/1989 | CA1254497A1 Reinforced metallic and polymer tape |
| 05/23/1989 | CA1254495A1 Sealed edge detectable tape |
| 05/18/1989 | DE3737301A1 Process and apparatus for repairing sewer pipes |
| 05/16/1989 | US4830539 Pipe propelling apparatus |
| 05/16/1989 | US4830538 Method and apparatus for refurbishing deficient pipes |
| 05/02/1989 | US4826354 Underwater cryogenic pipeline system |
| 05/02/1989 | CA1253436A1 Telescoping joint |
| 04/26/1989 | EP0312566A1 A method and means for providing a thermic insulating effect around an article, such as a pipeline which is submerged in water |
| 04/11/1989 | US4820082 Pipeline laying system and vessel |
| 03/28/1989 | US4815896 Deep sea shark cable protectors |
| 03/28/1989 | US4815649 Method of underwater jointing and repair of pipelines |
| 03/22/1989 | EP0308050A1 Device for permitting a first length of previously commissioned main to be extended by connecting a second length of main thereto |
| 03/22/1989 | CN1031812A Method and apparatus deforming reformable tubular pipe liners |
| 03/14/1989 | US4812078 Mechanized unit for digging a trench and laying elongate objects |
| 03/14/1989 | CA1251053A1 Multi-reel operational lines laying vessel |
| 03/07/1989 | US4810133 Tension leg platform tendon installation by deep catenary tow |
| 03/07/1989 | US4810132 Pipe tensioner machine |
| 02/28/1989 | US4808031 Pipeline joint protector |
| 02/21/1989 | CA1250227A1 Marine riser structural core connector |
| 02/15/1989 | EP0303085A2 Method and device for laying heating pipes in the ground |
| 02/09/1989 | WO1989001253A1 Polymeric tape with biocide |
| 02/09/1989 | DE3727786A1 Verfahren und vorrichtung zum installieren einer neuen rohrleitung innerhalb einer bestehenden rohrleitung Method and apparatus for installing a new pipeline within an existing pipeline |
| 02/09/1989 | DE3725307A1 Flexible pipeline for gaseous or liquid media, in particular for connecting an underwater pipeline to a platform |
| 02/08/1989 | EP0302061A1 Pipe for relining underground pipelines. |
| 02/08/1989 | EP0202256B1 Method of construction for a covered structure |