| Patents for F16L 9 - Rigid pipes (18,006) |
|---|
| 04/15/1981 | EP0027098A1 Method and device for making axially reinforced plastic pipes |
| 04/14/1981 | US4261769 Steel, resistant to cracking or breaking by vibration |
| 04/14/1981 | US4261671 Corrugated pipe for deepwater applications |
| 04/14/1981 | CA1099223A1 Glass fibre reinforced plastic pipe |
| 04/14/1981 | CA1099165A1 Double walled fuel line |
| 04/08/1981 | EP0026421A1 Synthetic material pipe |
| 04/01/1981 | EP0025904A2 Application of ambient temperature cured polymers or prepolymers to a cured elastomer and cured elastomeric articles obtained |
| 03/31/1981 | US4258756 Composite shell |
| 03/18/1981 | EP0025121A1 Plastic tube obtained by helicoidal winding of a profile |
| 03/17/1981 | US4256254 Method of manufacturing a welded joint in segmented sheath for compressed gas insulated transmission lines |
| 03/03/1981 | CA1096785A1 Protective unit for water pipes and a method for setting the unit |
| 02/25/1981 | EP0024069A1 Surface structure of a surface adapted for movement relative to a fluid |
| 02/10/1981 | US4250138 Process for producing microporous tubes of polytetrafluoroethylene |
| 02/10/1981 | US4249578 Length-adjustable stiffener for fiberboard ducts |
| 02/10/1981 | CA1095439A1 Glass fiber reinforced thermosetting resin pipe wall construction |
| 02/10/1981 | CA1095438A1 Pipe of oriented thermoplastic polymeric material and a method and apparatus for its manufacture |
| 01/22/1981 | WO1981000105A1 Method for coating articles |
| 01/20/1981 | US4246057 Heat transfer surface and method for producing such surface |
| 01/14/1981 | EP0022248A1 Hollow body to be composed of separate elements |
| 01/06/1981 | US4243075 Composite pipe |
| 01/06/1981 | CA1092994A1 Collar for gas pipelines |
| 12/30/1980 | CA1092326A1 Method of covering corrugated drainage tubes |
| 12/23/1980 | US4240470 Composite pipe having an integral bell end |
| 12/09/1980 | US4237940 Apparatus for reinforcing a duct |
| 12/02/1980 | US4236953 Process for producing thermoplastic multi-walled pipes |
| 11/26/1980 | EP0019585A1 Torque transmitting shaft |
| 11/26/1980 | EP0019256A1 Socketed ductile cast iron pipe |
| 11/18/1980 | CA1089782A1 Process for wear-resistant ducts |
| 10/30/1980 | WO1980002304A1 Packless silencer |
| 10/21/1980 | US4228826 Interlocking, laminated refractory for covering a pipe |
| 10/15/1980 | EP0016817A1 An oriented, semi-crystalline polymer product and method and apparatus for producing such product. |
| 10/01/1980 | EP0016162A1 A metal pipe as well as a method and plant for its production |
| 09/30/1980 | CA1086665A1 Modular conduit unit |
| 09/23/1980 | CA1086247A1 Electroconductive hose for cleaner |
| 09/23/1980 | CA1086036A1 Method of attachment of a metallic end-piece to a tubular element |
| 09/17/1980 | EP0015621A1 A tube for a cracking plant |
| 09/17/1980 | EP0015620A1 A method for producing a composite tube for a cracking plant |
| 09/02/1980 | US4220381 Drill pipe telemetering system with electrodes exposed to mud |
| 09/02/1980 | US4220181 Multi-layer pipe with single corrugation in inner wall |
| 09/02/1980 | CA1084854A1 Method and apparatus for producing tubular articles |
| 08/21/1980 | WO1980001673A1 Surface structure of a surface adapted for movement relative to a fluid |
| 08/20/1980 | EP0014474A1 Method for the production of a tube |
| 08/19/1980 | US4217948 Method for production of two-layer pipe casting |
| 08/19/1980 | US4217935 Fiber reinforced plastic pipe part |
| 08/12/1980 | US4217158 Method of forming prestressed filament wound pipe |
| 08/12/1980 | US4216823 Baseboard heating apparatus with cable carrier |
| 08/12/1980 | US4216803 Self-sealing fuel lines |
| 08/07/1980 | WO1980001601A1 Multilayer reinforced concrete pipe |
| 08/07/1980 | WO1980001600A1 Prestressed concrete pipe |
| 08/05/1980 | US4215727 Plastic well pipe |
| 08/05/1980 | US4215726 Protective unit for water pipes and a method for setting the unit |
| 07/29/1980 | US4214612 Tube of non woven material for reversed osmosis |
| 07/23/1980 | EP0013458A1 A plastics pipe provided with a socket and method of forming such a plastics pipe |
| 07/23/1980 | EP0000734B1 Method for making rods or tubes having a constant profile of fibre reinforced material |
| 07/22/1980 | US4213541 Metallic squeeze-out tube with resinous layer on its surface |
| 07/22/1980 | US4213486 Coated pipe and process for making same |
| 07/15/1980 | US4212329 Pipe construction and method of making same |
| 07/15/1980 | CA1081628A1 Multi-layer pipe with single corrugation in inner wall |
| 07/09/1980 | EP0012894A1 Exhaust system, especially for the motor vehicle industry |
| 07/01/1980 | CA1080604A1 Apparatus for forming fibrous material articles |
| 07/01/1980 | CA1080418A1 Special pipes |
| 06/25/1980 | EP0012167A1 Method of making a shaped article of reinforced material and shaped article so produced |
| 06/17/1980 | CA1079463A1 Overlapped plated steel strip for making anticorrosive double wall steel pipes |
| 06/11/1980 | EP0011627A1 Tunnel lining, segment therefore and method of lining a tunnel. |
| 06/10/1980 | US4207130 Such as sewers and pipelines with extruded plastic tubing |
| 06/10/1980 | US4206785 Sound insulating layer of polyurethane foam containing inorganic fller, tube of polyvinyl chloride or polyolefin |
| 06/03/1980 | US4205500 Wear resistant interlocking tile |
| 06/03/1980 | US4205420 Process for making a bent metal tube having a metal-ceramic liner |
| 05/27/1980 | CA1078308A1 Hose construction |
| 05/20/1980 | US4203312 Corrugated tubing with variable depth corrugations and method of making the same |
| 05/20/1980 | CA1077691A1 Method for producing clad steel pipes |
| 05/14/1980 | EP0010835A1 Plastics tube or hose with magnetic or electrically conductive strip |
| 05/13/1980 | US4202660 Glass-ceramic article and method of making same |
| 04/29/1980 | US4200126 Plastic composite tubular element containing a sleeve of braided metallic ribbons |
| 04/22/1980 | US4199010 Ceramic lined conduit |
| 04/17/1980 | WO1980000720A1 Manufacture of tubular laminates |
| 04/15/1980 | CA1075577A1 Steel cord reinforced plastic materials |
| 04/03/1980 | WO1980000550A1 An oriented,semi-crystalline polymer product and method and apparatus for producing such product |
| 04/02/1980 | EP0009402A1 A method of forming laminated hoses and laminated hoses obtained |
| 04/02/1980 | EP0009105A1 Plastic pipe |
| 04/01/1980 | US4195850 Gasket strip for butt joint compression seal |
| 04/01/1980 | US4195784 Three layer irrigation tube and apparatus and method for producing same |
| 03/19/1980 | EP0009007A1 Method of producing a fibre-reinforced plastics tube and a tube produced by this method |
| 03/11/1980 | US4193105 Pipe with an external sealing body |
| 03/11/1980 | CA1073226A1 Underdrainage pipe |
| 03/06/1980 | WO1980000367A1 A metal pipe as well as a method and plant for its production |
| 03/04/1980 | US4191518 Equipment for producing special pipes |
| 03/04/1980 | CA1072894A1 Manually formable stirrup mat reinforcement and pipe reinforcing method based thereon |
| 02/26/1980 | US4189985 Air operated linear actuator |
| 02/26/1980 | CA1072462A1 Reinforced smooth flow pipe |
| 02/12/1980 | US4188156 Riser |
| 02/12/1980 | CA1071522A1 Method and apparatus for manufacture of insulating sleeves |
| 01/23/1980 | EP0007201A1 Method of and mold for producing tubular bodies having annular grooves |
| 01/23/1980 | EP0006955A1 Packless silencer. |
| 01/23/1980 | EP0006882A1 Blank for pipe manufacture |
| 01/22/1980 | US4184520 Manually formable stirrup mat reinforcement and pipe reinforcing method based thereon |
| 01/15/1980 | US4183379 Duct board assembly |
| 01/15/1980 | US4183378 Light weight vacuum maintained structures |
| 01/15/1980 | CA1069812A1 Method of wrapping pipe with thermoplastic material |
| 01/08/1980 | US4182580 Underdrainage pipe |