| Patents for F16L 9 - Rigid pipes (18,006) |
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| 01/14/2004 | CN1134604C Shaped spiral wound pipe |
| 01/13/2004 | US6676881 Apparatus for producing multiple channel duct assembly and method thereof |
| 01/08/2004 | WO2004002673A1 Seam-welded air hardenable steel tubing |
| 01/08/2004 | WO2003001873A3 Corrugated plastic pipe sections having flanged ends and structually tight joints thereof |
| 01/08/2004 | US20040004311 Tacking method and apparatus |
| 01/08/2004 | DE20316589U1 Integrated circulation pipe, especially for conveying hot water, with water running forward in the inner pipe and returning in outer pipe |
| 01/08/2004 | DE19818212B4 Mehrfach beschichtetes metallisches Rohr und Verfahren zu seiner Herstellung Multi-coated metallic pipe and process for its preparation |
| 01/08/2004 | DE10227578A1 Verfahren zur Herstellung von glasfaserverstärkten Rohren Process for the preparation of glass fiber reinforced pipes |
| 01/08/2004 | DE10210016B4 Wärmeaustauschrohr mit berippter Innenoberfläche Heat exchange tube with finned inner surface |
| 01/08/2004 | DE10203626B4 Mehrschichtiges Rohr bzw. Schlauch A multilayer pipe or hose |
| 01/07/2004 | EP1238129B1 Woven composite fabric |
| 01/07/2004 | CN2597803Y Splice blast pipe |
| 01/07/2004 | CN1465878A Transfusion pipe with resistance-reducing water-repelling inner coating |
| 01/07/2004 | CN1133841C Hose for bearing medium and method for making same |
| 01/07/2004 | CN1133840C High resistance polypropylene tube |
| 01/02/2004 | EP1374824A1 Part of a warm water containing pipe system |
| 01/01/2004 | US20040000350 Hydro-dynamic static mixing apparatus and method for use thereof in transporting, conditioning and separating oil sands and the like |
| 12/31/2003 | WO2004001298A1 Air duct and an arrangement with an air duct, which has a cross-section with two longer sides and two shorter |
| 12/31/2003 | WO2004000522A1 Method for producing glass fibre reinforced tubes |
| 12/31/2003 | CN2596153Y Thermosetting inner expanding adhesive glass fibre reinforced plastic anti-corrosion oil pipe |
| 12/31/2003 | CN2596152Y Plastic pipe |
| 12/31/2003 | CN2596151Y Plastic color strip pipe |
| 12/31/2003 | CN2596150Y Carbon steel and stainless steel composite pipe |
| 12/31/2003 | CN1464216A Air conditioner compressor oil distributing pipe |
| 12/25/2003 | US20030236043 For lining sheet metal ducts in air conditioning, heating and ventilating systems |
| 12/24/2003 | WO2003106509A1 Polymerization process |
| 12/24/2003 | WO2003060412A3 Welded multi-chamber tube |
| 12/24/2003 | CN2594591Y High-pressure capillary wire |
| 12/24/2003 | CN2594590Y Corrosionproof pipeline with plastic lining |
| 12/24/2003 | CN2594589Y Stainless steel and plastic composite pipes |
| 12/24/2003 | CA2488198A1 Polymerization process |
| 12/24/2003 | CA2432913A1 Thermoplastic-polymer- and polyolefin-based flexible pipes for the operation of oil or gas fields |
| 12/23/2003 | US6666945 Preparation of an end of a thermoplastics tube manufactured by spirally winding a hollow profile |
| 12/23/2003 | US6666232 Thermoformed intake duct made of non-woven material with double bending |
| 12/18/2003 | WO2003103951A1 Resin-coated steel pipe excellent in mechanical strength such as sliding property |
| 12/18/2003 | WO2003103746A1 Flow adaptive aspiration tubing and devices |
| 12/18/2003 | US20030232935 Contacting monomers comprising ethylene, supported chromium catalyst; cocatalyst selected from metal alkyls of group 13 metals, to produce polyethylene; determining the density of polyethylene; adjusting concentration of cocatalyst |
| 12/18/2003 | US20030230375 Curing plastics within pipes eliminates need for welding |
| 12/18/2003 | CA2487818A1 Flow adaptive aspiration tubing and devices |
| 12/18/2003 | CA2487386A1 Resin-coated steel pipe |
| 12/17/2003 | EP1204771B1 Semifinished and finished products made of austenitic special steel and method for the production thereof |
| 12/17/2003 | EP1015146B1 Double-walled structure and method and arrangement for producing the same |
| 12/17/2003 | EP0912853B1 Fluoropolymer tubes and methods of making same |
| 12/17/2003 | CN2593009Y Superthin stainless steel-plastic composite tube |
| 12/17/2003 | CN2593008Y Anti-sunshine metal-plastic pipe |
| 12/17/2003 | CN2593007Y Plastic communicating pipe |
| 12/17/2003 | CN2593006Y Delaminating-proof stainless-steel-lined pipe |
| 12/17/2003 | CN2593005Y Structure of pipe wall with forced ribs |
| 12/17/2003 | CN1131139C Tubelike body made of fiber-reinforced composite material |
| 12/16/2003 | US6663931 White oil extrusion lubricant |
| 12/16/2003 | US6663808 Method of producing textile reinforced thermoplastic or thermoset pipes utilizing modified dorn structures |
| 12/16/2003 | US6663453 Buoyancy control systems for tubes |
| 12/11/2003 | WO2002020341A3 Method of reinforcing an existing metal structure, method of reinforcing pipes and method of addition of spur lines to pipelines |
| 12/10/2003 | CN2591371Y Steel wire framework infored superhigh polymer polyethylene pipe |
| 12/10/2003 | CN2591370Y High-temperature wearproof composite pipe fitting |
| 12/10/2003 | CN2591369Y Composite material transfer tube for boiler use |
| 12/10/2003 | CN1130510C Antibacterial composite aluminium-plastic pipe |
| 12/10/2003 | CN1130509C Aluminium-plastic composite pipe with fire-retarding plastic layer |
| 12/09/2003 | US6660796 Polyester molding composition |
| 12/09/2003 | US6660350 Electro-optical removal of plastic layer bonded to a metal tube |
| 12/09/2003 | US6658717 Duplex pipe end working method |
| 12/04/2003 | DE20211331U1 Pipe, used in animal feeding system, has stretched helical pattern arranged along inner surface of pipe causing food to move across elevations and valleys, resulting in re-mixing of food |
| 12/04/2003 | CA2452034A1 Butene-1 (co)polymers and process for their preparation |
| 12/03/2003 | CN2589776Y Section bar for spirally-wound pipes |
| 12/03/2003 | CN2589775Y Plastic coated thermal insulating copper pipe |
| 12/03/2003 | CN2589774Y Propulsion type prestressed concrete pipe |
| 12/03/2003 | CN1129728C Oil well pipe |
| 12/02/2003 | US6656997 Product with antistatic properties |
| 11/27/2003 | WO2003098093A1 Thermally insulated, rigid pipe-in-pipe systems |
| 11/27/2003 | WO2003097731A1 Polypropylene compositions especially for pipes |
| 11/27/2003 | US20030217779 Conduit for the transport of cyrogenic media |
| 11/26/2003 | EP1364986A1 Polypropylene compositions especially for pipes |
| 11/26/2003 | EP1364772A1 Multi-layer ducts for air distribution in air conditioning systems for vehicles |
| 11/26/2003 | EP1286832B1 Multi-layered pipe |
| 11/26/2003 | EP1224416B1 Conduit system |
| 11/26/2003 | CN2588156Y Shaping mechanism for inner die of aluminium-plastics pipe |
| 11/26/2003 | CN1458439A Method and device for producing alloy plastic self limited heat supply composite pipe |
| 11/26/2003 | CN1458438A Polymerized material garbage pipe |
| 11/26/2003 | CN1458437A Pipe with joint and its producing device |
| 11/26/2003 | CN1458436A Method for prducing and connecting ventilation pipe |
| 11/26/2003 | CN1128947C Manufacture of anti-corrosion wear-resistant composite ceramic-metal pipe |
| 11/26/2003 | CN1128946C Impact resistance water duct with three layer walls structure |
| 11/26/2003 | CN1128846C Products having anti-static function |
| 11/25/2003 | US6652939 Multilayer fuel transportation tube; polyamide layer |
| 11/25/2003 | US6652937 Composite thermoplastic-elastomer product |
| 11/25/2003 | US6651700 Device for limiting propagation of deformation in a wound double-walled tube |
| 11/25/2003 | CA2280239C Alloy pipes and methods of making same |
| 11/20/2003 | US20030214131 Coupling-equipped pipe and apparatus for manufacturing the same |
| 11/19/2003 | EP1363062A1 Conduit for the transport of cryogenic fluids |
| 11/19/2003 | EP1078189B1 Multilayer composite pipe, fluid conduit system using multilayer composite pipe and method of making the composite pipe |
| 11/19/2003 | CN2586860Y Packaged heat-insulating wind pipe of air-conditioner |
| 11/19/2003 | CN1128169C Process for preparation of creep-resistant polypropylene block copolymers |
| 11/13/2003 | WO2003093715A1 Pipe branch for an inlying circulation |
| 11/13/2003 | WO2003093714A2 Coupling assembly and method |
| 11/13/2003 | US20030209126 Centrifugally-cast tube and related method and apparatus for making same |
| 11/12/2003 | EP1361388A1 Composite tube for lining a pipe |
| 11/12/2003 | EP1361038A1 Method and device for producing a composite tube and composite tube produced by the method |
| 11/12/2003 | EP1009945B1 Tube made up of shells placed on top of one another |
| 11/12/2003 | CN2586035Y Perforated tube |
| 11/12/2003 | CN1455139A Bimetallic cladding pipe |