| Patents for F16L 9 - Rigid pipes (18,006) |
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| 09/08/1997 | CA2171267A1 Glass coated pipe system and testing method |
| 09/03/1997 | EP0792429A1 High-pressure fiber reinforced composite pipe joint |
| 09/02/1997 | US5662975 Composite tubular article consisting of a . . . petrol pipe and process for the preparation of such an article |
| 09/02/1997 | US5662972 Tubular laminate and process for producing the same |
| 09/02/1997 | US5662145 Dual bias weld for continuous coiled tubing |
| 08/28/1997 | WO1997031213A1 Multi-lumen plastics tubing |
| 08/28/1997 | CA2241979A1 Multi-lumen plastics tubing |
| 08/27/1997 | EP0791775A1 Pipeline for a fluid having elevated pressure and temperature |
| 08/27/1997 | EP0791158A1 Furnace superheater and a fluidized bed reactor provided with a furnace superheater |
| 08/27/1997 | EP0791153A1 Polyamide- and polyolefin-based ducts for transporting and/or distributing gas |
| 08/27/1997 | EP0633835B1 Elongate plastic member assembly and method and apparatus for making the same |
| 08/27/1997 | CN1158096A Manufacture of internally enhanced welded tubing |
| 08/26/1997 | US5660912 Plastic profiled strip forming helically wound tube using hinged flap for jointing |
| 08/26/1997 | US5660212 Integral HVAC reinforced duct system and method for reinforcing duct |
| 08/20/1997 | EP0789650A1 Wood tubing |
| 08/20/1997 | CN2260222Y Metallic and plastic composition corrosion-proof pipe |
| 08/20/1997 | CN1157589A Method and device for producing pipes or tubular moulded bodies from polymer concrete |
| 08/20/1997 | CN1157385A Multipurpose steel and plastic composite material support |
| 08/19/1997 | US5658613 Applying hot melt, low friction polymeric spray |
| 08/14/1997 | WO1997028949A1 Extruder |
| 08/13/1997 | EP0789176A1 Composite pipe with a sleeve and method of manufacturing the same |
| 08/13/1997 | EP0788589A1 Multi-layer fuel and vapor tube |
| 08/13/1997 | EP0644979A4 Method and apparatus for inspecting subsurface environments. |
| 08/07/1997 | WO1997028394A1 Multi-layer tubing assembly for fluid and vapor handling systems |
| 08/07/1997 | CA2275142A1 Multi-layer tubing assembly for fluid and vapor handling systems |
| 08/06/1997 | CN1156227A Metal tubing coated with multiple layers of polymeric materials |
| 08/06/1997 | CN1156226A Multiple layer tube |
| 08/05/1997 | US5653266 For transporting fuel or vapor or a motion transmitting member in an automobile |
| 07/30/1997 | EP0722550B1 Fluid line |
| 07/15/1997 | US5647401 Reinforcing-thread-buried resin pipe |
| 07/08/1997 | US5645110 Flexible high pressure pipe |
| 07/08/1997 | US5644883 Multiple use corner clip |
| 07/02/1997 | EP0781799A1 Antistatic compositions and adhesives based on polyamide |
| 07/01/1997 | US5643526 Process for preparing a composite tubular article consisting of a vulcanized elastomer used in combination with a thermoplastic containing polyamide blocks especially petrol pipe |
| 06/26/1997 | WO1997022827A1 Pipe of thermoplastic material and a method and device for extruding such a pipe |
| 06/26/1997 | DE19547881A1 Structural component with limiting surfaces |
| 06/25/1997 | EP0780621A1 Pipe element used for decreasing and attenuating noise propagated by main pipes and having a sound absorber and/or a branch pipe |
| 06/25/1997 | EP0780620A1 Pipe or similar element with electrical socket, process for making the electrical socket and process for making the joint between two such pipes or similar elements |
| 06/25/1997 | EP0780217A2 Thermoplastics tube or similar shaped piece and process for its manufacture |
| 06/25/1997 | EP0779855A2 Method and device for producing pipes or tubular moulded bodies from polymer concrete |
| 06/25/1997 | CN1152683A Bamboo woven reinforced composite pipe and shaping technology method |
| 06/19/1997 | WO1997021950A1 Co-extruded multilayer plastic pipe, method for producing the same, and device therefor |
| 06/19/1997 | WO1997021532A1 Method for producing homogeneous material with an extruder, an extruder, and a multilayer plastic pipe |
| 06/19/1997 | CA2239870A1 Co-extruded multilayer plastic pipe, method for producing the same, and device therefor |
| 06/18/1997 | EP0779467A1 Method of insulating pipeline bundles |
| 06/18/1997 | EP0778797A1 Manufacture of internally enhanced welded tubing |
| 06/18/1997 | EP0581820B1 Method of manufacture of a structurally composite metal and plastics tube |
| 06/18/1997 | CN1152070A Heat insulating noise reducing duct |
| 06/17/1997 | US5638871 Extruded multiple plastic layer coating bonded to a metal tube and process for making the same |
| 06/13/1997 | CA2192640A1 Methods of forming insulated pipeline bundles |
| 06/11/1997 | EP0745201A4 Hollow reinforcing members and composites containing the same |
| 06/11/1997 | CN1151789A Fluid circulation pipe |
| 06/10/1997 | US5636878 Pipe coupling |
| 06/05/1997 | WO1997019807A1 Use of cross-linked polyolefins material in pressure pipes |
| 06/04/1997 | EP0776470A1 Process and device for monitoring the tightness of pipelines, in particular sewage pipeline systems |
| 06/04/1997 | CN2255538Y Running water pipe |
| 06/03/1997 | US5635675 Bendable protective tube for buried cables |
| 06/03/1997 | US5635002 Coating recesses in roughened surface with high molecular weight non-adhesive polymer |
| 06/03/1997 | US5634847 For conducting exhaust vapors and fumes from a building |
| 06/03/1997 | US5634312 Shear bolt connected structural units |
| 05/28/1997 | DE19600114C1 Extruded plastics pipe with bends, especially for use in vehicles |
| 05/28/1997 | CN2254982Y Concrete permeable pipe |
| 05/21/1997 | EP0635108B1 Multilayer plastic duct |
| 05/20/1997 | US5630447 Pipe for geothermal heating and cooling systems |
| 05/15/1997 | WO1997010936A3 Method for heating and/or cross-linking of polymers and apparatus therefor |
| 05/14/1997 | EP0773399A1 Pipe or pipe part made of thermoplastic material |
| 05/14/1997 | CN1149902A Double walled insulated tubing and method for installing same |
| 05/13/1997 | US5629062 Fiber reinforced plastic pipe and process for producing the same |
| 05/13/1997 | US5628532 Laminated fuel line and connector |
| 05/09/1997 | WO1997016299A1 Apparatus and method for making multilayer fluid conduits |
| 05/07/1997 | EP0771985A1 Fluid conduit systems and methods for making |
| 05/07/1997 | EP0771984A1 Multilayer fluid conduits |
| 05/07/1997 | DE19540969A1 Plastic pipe for lining flue useful for restoration or in new chimneys |
| 05/01/1997 | WO1997015775A1 Fire resistant pipe |
| 05/01/1997 | CA2235367A1 Fire resistant pipe |
| 04/30/1997 | DE19547565C1 Tube or ducting with sound attenuation used in e.g. gas turbine applications |
| 04/30/1997 | DE19534473A1 Metallic tubular hollow body with reduced cost and weight |
| 04/23/1997 | CN2252927Y Ceramic compounded tube |
| 04/17/1997 | WO1997013695A1 Method and device for production of tubes |
| 04/16/1997 | EP0768488A2 Metal tubing coated with multiple layers of polymeric materials |
| 04/16/1997 | EP0767881A1 Fluid circulation pipe |
| 04/16/1997 | CN1147612A Finned tube and method of fabricating same |
| 04/16/1997 | CN1034607C Composite tubular article composed of a vulcanized elastomer |
| 04/15/1997 | US5620352 Flexible tube having a number of joints |
| 04/11/1997 | CA2186519A1 Metal tubing coated with multiple layers of polymeric materials |
| 04/09/1997 | CN2251821Y Internal duct |
| 04/08/1997 | US5617737 Capillary fluted tube mass and heat transfer devices and methods of use |
| 04/03/1997 | WO1997012166A1 Composite spoolable tube |
| 04/03/1997 | WO1997012165A1 Fluid line with integrated unpressurized return flow |
| 04/03/1997 | CA2687548A1 Composite spoolable tube |
| 04/02/1997 | EP0756682A4 Method for making upset ends on metal pipe and resulting product |
| 04/02/1997 | CN2251088Y Steel tube liner polypropylene composite acid tube |
| 03/27/1997 | WO1997011304A1 Tubular member for unitary acoustic sanitary ducts in a building |
| 03/27/1997 | WO1997010941A1 Oriented polymeric products |
| 03/27/1997 | WO1997010940A1 Method and apparatus for making an extrusion product, and an extrusion product |
| 03/27/1997 | WO1997010936A2 Method for heating and/or cross-linking of polymers and apparatus therefor |
| 03/26/1997 | EP0764248A1 Interlocked plastic-encased concrete pipe |
| 03/26/1997 | CN2250464Y Porous high penetration pipe |
| 03/25/1997 | US5613559 Decentralizing centralizing locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 03/25/1997 | CA2105146C Roll grooved pipe |