| Patents for F16L 9 - Rigid pipes (18,006) |
|---|
| 09/13/1989 | CN2044310U Wrapped cement pressur pipe with antiseep layer |
| 09/12/1989 | US4865893 Longitudinally divided sleeve tube for cable sleeves |
| 09/12/1989 | US4864711 Method of producing lined Hume pipe |
| 09/07/1989 | DE3827092C1 Use of a multi-layered plastic pipe, produced by coextrusion, as a heat-resistant pipe for fuel-carrying lines in motor vehicles |
| 09/05/1989 | US4862923 Laminated polyamide layer |
| 08/31/1989 | DE3805072A1 Plastic collector pipes |
| 08/30/1989 | CN2043699U Insulation corrosion-preventing composite tube |
| 08/29/1989 | US4861074 Tubing collar |
| 08/16/1989 | EP0328094A2 Doublewalled pipe and connection of coaxial doublewalled pipe sections by means of a connection piece consisting of such a doublewalled pipe |
| 08/09/1989 | EP0326711A2 Polymeric piping |
| 08/01/1989 | US4852616 Corrugated pipe |
| 08/01/1989 | CA1258038A1 Pipeline cable for use under water |
| 07/26/1989 | CN1034255A Pipe joint element |
| 07/25/1989 | US4851298 Multi-layer tube of a muffler for an internal combustion engine |
| 07/19/1989 | CN2041384U Large ribbed splicing type pressure round pipe made of reinforced concrete |
| 07/12/1989 | EP0217841B1 Fiber reinforced plastic pipe and centrifugal casting method for manufacturing same |
| 07/11/1989 | US4846510 Adjustable tubular wall structure for connectors and the like |
| 07/11/1989 | US4846264 Composite pipe, process for producing the same, and heat pipe using the same |
| 07/05/1989 | EP0322508A1 Pipe joint element |
| 07/05/1989 | CN1033684A Pipe with lined rubber of duct-extraction system in heat and power plant |
| 07/04/1989 | US4843713 Apparatus for making helical flowline bundles |
| 06/28/1989 | CN2040208U Insulating polyurethane tube with outer plastic casing |
| 06/21/1989 | EP0321343A1 Dual pipe tubular exhaust element, especially for automotive vehicles and method of manufacturing this element |
| 06/08/1989 | DE3739937A1 Fuel pressure line |
| 06/06/1989 | US4836714 Enclosed structures of very large cross-section, such as conduits, silos or shelters |
| 06/06/1989 | US4835936 Process for obtaining hollow structures such as conduits, silos or shelters |
| 06/06/1989 | CA1255110A1 Dual wall steel and fiber composite mooring element for deep water offshore structures |
| 05/31/1989 | EP0318434A2 Extruder for manufacturing a plastic pipe |
| 05/31/1989 | EP0318232A1 Insulated pipe |
| 05/31/1989 | CN2038478U Thermoplastic toughened glass pipes and storage tanks |
| 05/17/1989 | EP0315796A1 Double walled pipeline system |
| 05/16/1989 | US4830062 Porous heat-shrinkable tetrafluoroethylene polymer tube and process for producing the same |
| 05/05/1989 | WO1989004047A1 Treadable insulation system with lagging support |
| 05/03/1989 | DE3735463A1 Lightweight structural body |
| 04/27/1989 | DE3735076A1 Method for the production of a double-walled tubular hollow body, tools for carrying out the method and a hollow body produced by the method |
| 04/26/1989 | CN1032581A Profile band of plastics |
| 04/25/1989 | US4823847 Multi-layer helical seam steel pipe |
| 04/11/1989 | CA1252399A1 Conforming pipe |
| 04/05/1989 | EP0310271A1 An anti-static non-metallic pipe or fitting |
| 04/05/1989 | EP0309820A2 Air channel stiffening |
| 04/05/1989 | CN2035420U Multi-purpose telescoping contnection rod |
| 03/29/1989 | CN2035034U Conveyer pipe made of sandwich fibre reinforced plastic |
| 03/22/1989 | EP0307613A1 Profiled plastic strip |
| 03/21/1989 | CA1251407A1 Crack stopping in pipelines |
| 03/15/1989 | CN2034230U Combined steel-plastic compound fitting |
| 03/14/1989 | US4812274 Heating and melting exterior surface only; then cooling to give uniform crystal structure through out |
| 03/14/1989 | US4811760 Multiple conductor fluid handling duct for an automotive vehicle |
| 03/08/1989 | EP0305362A1 Fire resistant plastic structure |
| 03/08/1989 | CN1031594A Compound steel pipe with fully-covered plating |
| 02/28/1989 | US4808032 Thrust pipe |
| 02/09/1989 | DE3725147A1 Sound-insulating component |
| 02/08/1989 | EP0302061A1 Pipe for relining underground pipelines. |
| 02/08/1989 | EP0202256B1 Method of construction for a covered structure |
| 02/08/1989 | CN1030945A Rare-earth grey cast iron exhaust water pipe |
| 01/24/1989 | US4800109 Flexible composite hose |
| 01/12/1989 | WO1989000263A1 Tube for circulation of a flammable fluid |
| 01/11/1989 | EP0188487B1 Large cross-section sunken conduit |
| 01/10/1989 | US4796669 Product for relining sewers and water pipes |
| 01/04/1989 | EP0297990A1 Tube for the circulation of an inflammable fluid, and piping made with such tubes |
| 01/04/1989 | CN1030047A Method for producing steel reinforced concrete pipe through liner bushing |
| 12/27/1988 | US4794049 Electrode supporting conduit tube for electrical heating or underground hydrocarbon resources |
| 12/27/1988 | US4793544 Method of producing a multi-layer tube of a muffler |
| 12/20/1988 | US4791965 Co-extruded tube |
| 12/20/1988 | US4791964 Multiple conductor fluid handling duct for an automobile vehicle |
| 12/20/1988 | CA1247019A1 Hose with coextruded cover consisting of multiple foamed or nonfoamed layers |
| 12/06/1988 | US4789007 Method of making compound pipes for conveying various fluids and pipe obtained by this method |
| 12/01/1988 | DE3715251A1 Kraftfahrzeug-rohrleitung fuer die fuehrung eines alkoholischen mediums Motor vehicle pipeline for the Speedtracking an alcoholic medium |
| 11/30/1988 | EP0292836A1 Cylindrical hollow body made of a helically wound plastic profile |
| 11/29/1988 | US4788090 Fire resistant plastic pipe |
| 11/29/1988 | US4787421 Flow path defining means and method of making |
| 11/29/1988 | CA1245690A1 Quick disconnect coupling device |
| 11/29/1988 | CA1245577A1 Plastic lockseam tubing and method for making |
| 11/23/1988 | EP0291639A1 Thermoplastic composite pipe tube with resin rich inner portion and method of manufacturing the same |
| 11/23/1988 | CN88202160U Three-way pipe of glassfibre composite material |
| 11/22/1988 | US4786088 Double-containment thermoplastic pipe assembly |
| 11/22/1988 | US4785853 Conduct pipe covered with electrically insulating material |
| 11/22/1988 | US4785852 Conduct pipe covered with electrically insulating material |
| 11/17/1988 | WO1988008784A1 Plastic tube with solid cross-ribs on the outer surface, a moulding device therefor; installation comprising such a device and a method for moulding a plastic tube |
| 11/17/1988 | EP0291136A1 Plastic tube with solid crossribs on the outer surface, a moulding device therefor; installation comprising such a device and a method for moulding a plastic tube |
| 11/17/1988 | DE3714592A1 Safety pipe consisting of a thermoplastic material |
| 11/15/1988 | US4784311 Fuel injection tube for diesel engines |
| 11/10/1988 | DE3714112A1 Landfill shaft with at least one shaft pipe of plastic |
| 11/09/1988 | CN87103183A Antipressure anticorrosion complex pipe and its manufactural technology |
| 11/08/1988 | CA1244336A1 Heat insulating structures for low-temperature or cryogenic pipings |
| 11/03/1988 | WO1988008620A1 An elongate hollow element |
| 11/02/1988 | CN88212264U Novel unequal-wall taper pipe for bicycle |
| 10/25/1988 | US4779652 Unitary double wall piping system |
| 10/19/1988 | CN88201715U Directly laying pipe with glass fibre reinforced plastic slewe for thermal preservation |
| 10/19/1988 | CN88101607A Concrete compound pipe and its method of manufacture |
| 10/11/1988 | US4777072 Pliable sheet and coupling strip |
| 09/28/1988 | EP0284317A1 Concrete-type composite pipe and a method of producing the same |
| 09/27/1988 | US4773448 Freeze-resistant plastic pipe and method for its manufacture |
| 09/27/1988 | US4773149 Method of making ceramic tube for high temperature use |
| 09/22/1988 | WO1988007153A1 Fire resistant plastic structure |
| 09/14/1988 | EP0281599A1 A blast pipe, preferably for use in metallurgical processes |
| 08/24/1988 | EP0279344A2 Flexible hose |
| 08/17/1988 | EP0278294A1 Conduction element for a flat channel for conducting gaseous media |
| 08/17/1988 | CN87216064U Corrosion-resisting fast-connected pipe |
| 08/09/1988 | US4762441 Sealing profile |
| 07/26/1988 | US4759389 Synthetic resin pipe for underground installation |