| Patents for F16L 9 - Rigid pipes (18,006) |
|---|
| 07/13/1982 | US4338716 Plastic pipe provided with a groove |
| 07/06/1982 | US4337793 Copper-alloy tube water supply |
| 07/06/1982 | US4337785 Method using copper-copper-alloy tube for water supply |
| 06/30/1982 | EP0054751A1 Plastic heating pipe for under-floor heating with oxygen-impermeable sheath |
| 06/22/1982 | CA1126176A1 Coated pipe and process for making same |
| 06/22/1982 | CA1126127A1 Method and apparatus for distributing fluids |
| 06/15/1982 | US4335169 Slotted concrete pipe |
| 06/15/1982 | CA1125679A1 Ductile cast iron pipe with end casing |
| 06/09/1982 | EP0053590A2 A method for manufacturing tubes with aluminium core and capable of permanent cold deformation |
| 06/08/1982 | CA1125192A1 Ceramic lined conduit |
| 06/02/1982 | EP0052941A1 Tube material for sour wells of intermediate depths |
| 06/01/1982 | US4332509 Riser pipe system for collecting and raising petroleum produced from an underwater deposit |
| 05/27/1982 | WO1982001757A1 Improved tubular plastics objects |
| 05/25/1982 | US4331497 Composite shell |
| 05/19/1982 | EP0052017A1 Channelled plastic pipe with channel ends closed and method of producing the same |
| 05/18/1982 | US4330811 Filament-reinforced plastic article |
| 05/18/1982 | US4330016 Pipe part provided with a flange |
| 05/18/1982 | US4330015 Ductile cast iron pipe having constricted end casing |
| 05/13/1982 | WO1982001578A1 Metallic clad capillary tubing |
| 05/13/1982 | WO1982001533A1 Process for forming laminated pipe |
| 05/12/1982 | EP0051419A1 Pipe joint |
| 05/04/1982 | CA1123051A1 Pipe section for use in a borehole |
| 04/27/1982 | US4327138 Application of ambient temperature cured polymers or prepolymers to a cured elastomer |
| 04/21/1982 | EP0050099A1 Tube which can be axially stacked |
| 04/20/1982 | US4325414 Hollow body assemblies |
| 04/15/1982 | WO1982001159A1 Method for reinforcing a hollow body made by winding a profiled section,profiled section for implementing such method and reinforced pipes obtained thereby |
| 03/30/1982 | US4322260 Process for the continuous extrusion forming of a plastic double-walled foam-core conduit |
| 03/30/1982 | US4321950 Spheroidal graphite cast iron pipe and the process for producing same |
| 03/23/1982 | CA1120412A1 Thermosetting resin pipe |
| 03/17/1982 | EP0047625A2 Pipe manufactured from irradiated polyethylene containing carbon black |
| 03/17/1982 | EP0047527A2 Composite dual tubing |
| 03/17/1982 | EP0047526A2 Composite dual tubing |
| 03/17/1982 | EP0047525A1 Composite dual tubing |
| 03/09/1982 | US4318636 Tunnel lining, segment therefore and method of lining a tunnel |
| 03/04/1982 | WO1982000613A1 Method and apparatus for processing compressible material |
| 02/17/1982 | EP0046134A1 Method for the manufacture of multiple layered tubes protected against corrosion by an inner and outer plastics layer |
| 02/16/1982 | US4315361 Method of reinforcing a duct |
| 02/09/1982 | US4314587 Rib design for boiler tubes |
| 01/27/1982 | EP0044668A1 Improvements in and relating to conduits |
| 01/20/1982 | EP0044000A1 Method and apparatus for producing a smooth-lined corrugated pipe |
| 01/13/1982 | EP0043423A1 Supporting spacer for pipes inside other pipes, especially for holding tubes of tube mail systems within protection tubes |
| 01/12/1982 | US4309869 Method and apparatus for forming a non-tensioned multi-conduit line |
| 01/12/1982 | CA1115917A1 Lining of passageways |
| 01/08/1982 | EP0029043A4 Packless silencer. |
| 01/05/1982 | US4308999 Method and apparatus for longitudinally reinforcing continuously generated plastic pipe |
| 12/23/1981 | EP0042248A2 Manufacture of composite shafts |
| 12/22/1981 | US4307053 Method and apparatus for processing compressible material |
| 12/15/1981 | US4305983 Thin walled tubing formed of a melt spinnable synthetic polymer and process for the manufacturing thereof |
| 12/15/1981 | US4305899 Method of manufacturing a plastic tube with longitudinal channels in the wall |
| 12/15/1981 | US4305430 Apparatus for distributing fluids |
| 12/01/1981 | US4303144 Apparatus for the retroreflection of sound |
| 12/01/1981 | US4303104 Double-wall plastic tubing in which the outer wall has transverse corrugations and the inner wall is smooth |
| 11/24/1981 | US4301838 Modular conduit unit |
| 11/17/1981 | US4301200 Large diameter, without projections |
| 11/17/1981 | US4300598 Said steel being low carbon steel with a ferritic structure containing carbides |
| 11/10/1981 | US4299107 Device for forming a collar around a hole in the wall of a pipe |
| 11/03/1981 | CA1111751A1 Plastic pipe |
| 10/27/1981 | US4297414 Reinforcing material for hydraulic substances and method for the production thereof |
| 10/27/1981 | US4296804 Corrosion resistant heat exchanger element and method of manufacture |
| 10/27/1981 | US4296781 Sectional pipe and tubular members for forming same |
| 10/27/1981 | US4296539 Heat transfer tubing for natural gas evaporator |
| 10/20/1981 | US4295497 Variegated stirrup mat |
| 10/07/1981 | EP0036968A1 Process for producing soldered, multi-layer metal tubes, and apparatus for carrying out this process |
| 09/29/1981 | CA1109619A1 Method of making lightweight, rigid thermoplastic pipe |
| 09/23/1981 | EP0036184A2 Pipe building method and apparatus |
| 09/22/1981 | US4290836 Method of making composite pipe having an integral bell end |
| 09/22/1981 | US4290631 Submarine pipe construction |
| 09/15/1981 | US4289172 Reinforced bitumen pipes and process for their manufacture |
| 09/15/1981 | US4289169 Heat-expandable multi-passage pipe having parts for intended breakage |
| 09/15/1981 | CA1108875A1 Tunnel lining, segment therefore and method of lining a tunnel |
| 09/08/1981 | US4287962 Packless silencer |
| 09/01/1981 | US4286636 Dip tube and valve with quick-disconnect coupling for a collapsible container |
| 09/01/1981 | CA1108071A1 Composite pipe having an integral bell end |
| 08/25/1981 | US4285779 Method of making a fluid circuit device |
| 08/11/1981 | US4282905 Manufacture of seamless laminated tubing |
| 08/04/1981 | US4282277 Oriented, semi-crystalline polymer product and method and apparatus for producing such product |
| 08/04/1981 | US4281860 Key coupled plastic conduits |
| 08/04/1981 | US4281510 Gas turbine plant |
| 07/28/1981 | US4280536 Connecting device for insulated duct work |
| 07/28/1981 | US4280534 Plastics pipes having walls with lengthwise extending channels |
| 07/21/1981 | US4279435 Gas riser apparatus |
| 07/21/1981 | CA1105431A1 Wear resistant interlocking tile |
| 07/08/1981 | EP0031779A2 Pipeline for conveying warm or cold fluids |
| 07/08/1981 | EP0031422A1 Apparatus for producing tubes of given length |
| 07/08/1981 | EP0031343A1 Method for coating articles |
| 06/30/1981 | CA1104073A1 Corrugated tubing with variable depth corrugations and method of making the same |
| 06/25/1981 | WO1981001736A1 Pipe of plastic material with bulgings |
| 06/16/1981 | US4273161 Insulated plastic pipe product and method |
| 06/10/1981 | EP0030091A2 Gaseous diffusion resistant article |
| 06/02/1981 | US4271208 Powder coating interior using electrostatically charged resin |
| 06/02/1981 | US4270690 Method of forming variably rifled tubes |
| 05/27/1981 | EP0029043A1 Packless silencer. |
| 05/26/1981 | US4269234 High strength pipe |
| 05/19/1981 | US4267863 Tube reinforced with a synthetic material |
| 05/13/1981 | EP0028310A1 Filament-reinforced plastic article |
| 04/29/1981 | EP0027502A1 Composite shell formed of glassy metal alloy strips |
| 04/22/1981 | EP0027276A2 Transportable conduit section |
| 04/21/1981 | US4263249 Method for producing reinforced plastic tubular body having annular grooves, and mold therefor |
| 04/21/1981 | CA1099463A1 Microporous tubes and process for producing the same |
| 04/16/1981 | WO1981001041A1 Transportable conduit section |