| Patents for F16L 57 - Protection of pipes or objects of similar shape against external or internal damage or wear (3,889) |
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| 12/22/1994 | WO1994029633A1 Modular protective pipeline cover |
| 12/22/1994 | WO1994029631A1 Hose with protector |
| 12/08/1994 | WO1994028342A1 Dual gasket lined pipe connector |
| 11/16/1994 | CN2182918Y Glass fibre reinforced protection cover for gas pipe at entrance to house |
| 11/10/1994 | WO1994025791A1 Fire-resistant structural member and method of production |
| 10/26/1994 | EP0620873A1 Wraparound closure device. |
| 10/19/1994 | EP0620398A1 Apparatus for in-situ lining an underground main |
| 10/19/1994 | EP0620104A2 Pipe liner bag, manufacturing method therefor and pipe repair method |
| 10/19/1994 | EP0620103A2 A method for repairing a tubular conduit |
| 10/19/1994 | EP0620100A2 A method for everting a tubular liner bag |
| 10/18/1994 | US5356502 Method for lining a branch pipe |
| 10/12/1994 | EP0456660B1 Wear indicator for material transfer systems |
| 10/11/1994 | US5353843 Method and apparatus for protecting a hose |
| 10/04/1994 | US5352383 Applying solution of cyclohexylammonium benzoate and a benzoate salt in an aqueous alcohol solvent; oil field applications |
| 08/17/1994 | EP0610620A1 A method for lining a branch pipe |
| 08/17/1994 | EP0610437A1 Improvements relating to the lining of pipelines and passageways |
| 08/17/1994 | CN1090913A An offshore pipeline insulated with a cementitious coating |
| 08/16/1994 | US5337792 Protective cover for pipe end |
| 08/09/1994 | CA1331395C Wear indicator for material transfer systems |
| 07/07/1994 | WO1994015138A1 Device for securing pipes against fracture |
| 06/14/1994 | US5320388 Well tubing liner system |
| 06/09/1994 | WO1994012820A1 An offshore pipeline insulated with a cementitious coating |
| 06/08/1994 | CN2168154Y Weld anti-flushed prolonging pipe |
| 05/31/1994 | US5317610 Prevent reduction in wall thickness |
| 05/17/1994 | US5312658 Conduits having a shock absorbing shell and method for their formation |
| 05/10/1994 | US5310291 Transport duct for abrasive materials |
| 04/19/1994 | US5303743 Thread protection system |
| 04/13/1994 | CN2161801Y Wear-resistant bend for hot air |
| 04/12/1994 | US5301984 Wear resistant pipe elbow |
| 04/05/1994 | US5300337 Wraparound closure device |
| 03/29/1994 | US5298299 Double wall fire proof duct |
| 03/29/1994 | US5297585 Room temperature shrinkable tube |
| 03/29/1994 | US5297583 Apparatus for limiting a leak in the event of a rupture in pipework |
| 03/22/1994 | US5295865 Rubber plug for waterproof connector |
| 03/02/1994 | CN2158025Y Wear-resisting steel pipe |
| 02/22/1994 | US5288111 90 degree elbow for pneumatic transport pipes |
| 02/15/1994 | US5285741 Method of producing a flexible tubular lining |
| 01/11/1994 | US5277227 Plastic abrasion-resistant protective sleeve for hose |
| 01/04/1994 | US5275440 Double-layer pipe bend with intermediate support layer |
| 12/29/1993 | EP0575333A1 Heat shrinkable wraparound articles for covering elongate objects. |
| 12/23/1993 | WO1993025839A1 Movable protection structure for hawsers, hoses, cables, pipes and similar |
| 12/22/1993 | EP0455764B1 Remotely controlled installation of linings in inaccessible sewer-pipe junctions and discharge entries |
| 12/21/1993 | US5271974 Improved cement and polyolefin lined product |
| 12/14/1993 | US5269565 Pipeline breakaway protection mechanism |
| 11/25/1993 | WO1993023695A1 Rupture inhibiting fluid transition |
| 11/25/1993 | CA2117767A1 Rupture inhibiting fluid transition |
| 11/02/1993 | CA1323770C Root repelling pipe joints |
| 10/14/1993 | WO1993020382A1 Metal pipe and process for producing the same |
| 10/07/1993 | DE4211138A1 Vorrichtung zur Förderung von feststoffreichen Dickstoffen Device for conveying solids-rich thick substances |
| 10/04/1993 | WO1993020002A1 Device for conveying thick substances containing a great deal of solid material |
| 10/04/1993 | CA2133250A1 Device for conveying thick substances containing a great deal of solid material |
| 09/14/1993 | CA1322182C Ribbed pipe |
| 09/08/1993 | EP0371057B1 Polymeric tape with biocide |
| 09/01/1993 | CN1075786A Wearproof composite structure pipe and its manufacturing method |
| 08/31/1993 | US5240293 Brittle lined pipe connector |
| 08/17/1993 | US5236231 Brittle lined pipe connector |
| 08/04/1993 | EP0553558A1 Method for lining a pipeline |
| 07/22/1993 | WO1993014253A1 Wraparound closure device |
| 07/20/1993 | US5228478 Wear indicator for material transfer systems |
| 07/15/1993 | DE4200264A1 Protective covering for rain pipes during decoration etc. - using corrugated, elastic covers which snap into place around pipes |
| 07/08/1993 | WO1993013352A1 Improvements relating to the lining of pipelines and passageways |
| 07/08/1993 | CA2121354A1 Improvements relating to the lining of pipelines and passageways |
| 06/16/1993 | EP0546934A1 Jacket for wrapping around pipes in a trench |
| 06/15/1993 | US5219187 Pipe connection |
| 06/08/1993 | US5217667 Method for making conduits having a shock absorbing shell |
| 05/19/1993 | DE4137566A1 Prefabricated sheets and shells for lining concrete pipes etc. - made from 2-component mixt. comprising filled epoxy] resin compsn. and mixt. of quartz powder and silica sand |
| 05/12/1993 | CN1072007A Wear- and corrosion-resistant composite steel pipe and mfg. method thereof |
| 04/07/1993 | EP0535997A1 Leakage-detecting hose |
| 03/31/1993 | EP0534841A1 Flange protector having integral connectors |
| 03/27/1993 | CA2077699A1 Flange protector having integral connectors |
| 03/10/1993 | EP0530467A1 Warning band |
| 03/04/1993 | CA2077270A1 Method of protecting a pipe end |
| 02/23/1993 | US5188396 Rebuildable slurry conduit elbow |
| 02/02/1993 | US5183079 Heat and fire resistant protective covering for hoses, cables and the like |
| 01/19/1993 | CA1312716C Pipe liner process and apparatus |
| 01/07/1993 | WO1993000212A1 A method of coating a plastic pipe and a plastic pipe coated by the method |
| 01/07/1993 | EP0521041A1 Pipeline and passageway lining materials. |
| 12/30/1992 | EP0519980A1 Improvements relating to the manufacture of tubular materials (tube without overlap) |
| 12/23/1992 | EP0519524A2 Protecting device for pipe ends |
| 12/23/1992 | CN2125764U Anti-wearing ceramic lining sheet for current element |
| 12/09/1992 | EP0516990A2 Thread protection system |
| 11/12/1992 | WO1992019903A1 Multilayer fire protective coating |
| 11/12/1992 | WO1992019431A1 Conduits having shock absorbing shell and method for their formation |
| 11/12/1992 | CA2102309A1 Conduits having shock absorbing shell and method for their formation |
| 10/28/1992 | EP0511035A1 Device for thermal electric and nuclear power plants |
| 10/13/1992 | US5154139 For protecting fluid carrying tubes within a boiler |
| 09/22/1992 | CA1307749C Ducting for transporting granular or powder substances under gravity, in particular on sites having silos |
| 09/16/1992 | EP0502908A1 Fire protected pipe and pipeline |
| 09/08/1992 | US5145281 Method of renovating and/or protecting sewers or pipes |
| 09/03/1992 | DE4124825C1 Polyolefin tube with improved abrasion resistance - contains glass on quartz microparticles in walls and/or outer layer |
| 09/01/1992 | US5143409 Stress relief device |
| 08/19/1992 | CN2113399U Rectangular guide tube protective cover |
| 08/18/1992 | US5139290 Quick coupling for plastic pipe |
| 08/12/1992 | EP0498042A1 Pipe with internal coating |
| 08/04/1992 | USRE34017 Increased tensile strength variable diameter protective joint |
| 07/23/1992 | WO1992011997A1 Heat shrinkable wraparound articles for covering elongate objects |
| 07/10/1992 | CA2098006A1 Heat shrinkable wraparound articles for covering elongate objects |
| 07/07/1992 | US5127678 Airhose damage protection |
| 05/26/1992 | CA1301870C Support helix for a radially expanded resilient sleeve |
| 04/29/1992 | CN1016407B Method and apparatus deforming reformable tubular pipe liners |