| Patents for F16L 9 - Rigid pipes (18,006) |
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| 02/24/1999 | EP0897934A1 Process for the preparation of an ethylen polymer composition |
| 02/24/1999 | EP0897501A1 Pressure tube of a plastic material |
| 02/24/1999 | CN1208744A Process for mfr. of compsn. comprising ethylene polymers |
| 02/23/1999 | US5874016 Concrete column forming tube having a smooth inside coated surface |
| 02/18/1999 | WO1999008038A1 Sound insulation member |
| 02/18/1999 | WO1999008033A1 High weeping strength polymer-glass ribbon composite laminates for fluid containment |
| 02/18/1999 | WO1999007908A1 Ferritic alloy for constructions |
| 02/18/1999 | CA2296074A1 High weeping strength polymer-glass ribbon composite laminates for fluid containment |
| 02/17/1999 | CN1208144A GRP-thin wall stainless steel composite pipe and its making process |
| 02/17/1999 | CN1208143A Composite aluminum-plastic pipe with aluminum layer to be butt welded and its production |
| 02/17/1999 | CN1042170C Method for manufacturing boron mud high temp. coating oxygen lance |
| 02/10/1999 | CN2307167Y Residue extraction pipeline |
| 02/10/1999 | CN1207469A Glass fibre reinforced plastic and high-density polyethylene compound pipe and mfg. method thereof |
| 02/09/1999 | US5868437 Composite pipe structure |
| 02/09/1999 | US5868171 Composite conduit for carrying fuel oil |
| 02/09/1999 | US5868169 Reinforced lining hose for softlining pipe rehabilitation |
| 02/09/1999 | US5867883 Surface treatment of the zinc alloy layer using chromate, phopshate or alloy treatment, bonding first coatings selected from nylons, inomers, fluoropolymers and second coating of nylon, thermoplastic elastomer, fluoropolymers |
| 02/04/1999 | WO1999005440A1 Oil well pipe |
| 02/03/1999 | EP0895012A1 Pipe provided with a plurality of longitudinal channels |
| 02/03/1999 | EP0894616A2 Pipe made of thermoplastic resin |
| 02/03/1999 | EP0894103A1 Process for the preparation of creep-resistant polypropylene block copolymers |
| 02/02/1999 | US5865475 Connection between a building component and a pipe-shaped line element |
| 02/02/1999 | US5865218 Multi-layer fuel and vapor tube |
| 02/02/1999 | US5865216 System for housing secondarily contained flexible piping |
| 02/02/1999 | CA2156393C Piping element for buried piping, buried piping made thereof and process for protection coating of said element |
| 01/28/1999 | DE19731580A1 Composite tubing suitable for potable water |
| 01/27/1999 | CN2305540Y Profile multiple edge seamed steel pipe |
| 01/26/1999 | US5862866 Double walled insulated tubing and method of installing same |
| 01/26/1999 | US5862834 Pipe support for permitting lateral and longtudinal movement of an inner pipe relative to an outer pipe in a double-containment pipe assembly |
| 01/21/1999 | DE19752081C1 Plastic-jacketed tube, e.g. copper@ water pipe |
| 01/20/1999 | CN2304797Y Composite steel pipe |
| 01/19/1999 | CA2090293C Gas line |
| 01/14/1999 | WO1999001280A1 Multilayer structure based on polyamides and tube or conduit with multilayer structure |
| 01/13/1999 | EP0890770A2 Composite pipe with integrally formed socket and method of manufacturing the same |
| 01/13/1999 | EP0890769A2 Conduit for conveying petrochemical products |
| 01/13/1999 | EP0890768A2 Pipe for conveying liquid or gaseous media |
| 01/12/1999 | US5858492 Consists of first layer of polyvinylidene fluoride, second layer comprises a mixture of polyamide and polyglutarimide, third layer is a coupling agent bonded to adjacent layers, and forth layer of polyolefin |
| 01/12/1999 | US5857494 Pipeline structure with a lining material, an end structure of said pipeline and a method for applying a lining material to a pipeline |
| 01/07/1999 | EP0889276A1 Resin coated pipe and manufacturing method thereof, and a fuel tank with such a pipe |
| 01/07/1999 | EP0889012A1 Process for filling cavities in workpieces or semi-finished products and components for mounting in a vehicle |
| 01/07/1999 | EP0760068B1 Process for forming pipe of improved construction |
| 01/07/1999 | DE19728054A1 Oxidation and temperature resistant steel tube |
| 01/06/1999 | CN2303144Y Composition pipe |
| 01/06/1999 | CN1204387A Co-extruded multilayer plastic pipe, method for producing the same, and device therefor |
| 01/06/1999 | CN1203852A High temp. cooling making method for polytetrafluoroethylene film lining |
| 12/30/1998 | CN1041457C Piping element for burried conduit and method for protecting said piping element |
| 12/24/1998 | DE19725881A1 Pipe arrangement for the removal of dust from dust laden emissions |
| 12/23/1998 | WO1998029245A3 Laminate structures for fuel containers |
| 12/23/1998 | EP0886094A2 Resin coating pipe and manufacturing method thereof, and fuel tank with resin coating pipe |
| 12/23/1998 | EP0885368A1 Fire retardant reinforced plastic duct system |
| 12/23/1998 | CN1202958A Fire resistant pipe |
| 12/17/1998 | WO1998057403A1 Foam coated convoluted tubing |
| 12/17/1998 | WO1998056555A1 Method for producing plastic pipes and pipe part produced according to said method |
| 12/17/1998 | CA2292507A1 Foam coated convoluted tubing |
| 12/16/1998 | EP0883769A1 Multilayer pipe |
| 12/16/1998 | EP0883768A1 Multilayer pipe |
| 12/16/1998 | CN1202128A Method for heating and/or cross-linking of polymers and apparatus therefor |
| 12/16/1998 | CN1201870A Dual-walled exhaust tubing for vacuum pump |
| 12/15/1998 | US5849382 Tubing for systems in automotive vehicles and a method of manufacturing the same |
| 12/10/1998 | WO1998036198A3 Double containment pipe sections |
| 12/09/1998 | EP0882925A2 Synthetic resin pipe |
| 12/09/1998 | EP0882572A1 Metal/synthetic resin laminate and synthetic resin-clad metallic pipe |
| 12/09/1998 | EP0882571A1 Polyolefin-covered steel pipe possessing excellent resistances to thermally oxidative deterioration and weathering and process for manufacturing the same |
| 12/09/1998 | EP0644979B1 Method and apparatus for inspecting subsurface environments |
| 12/09/1998 | CN2300032Y Universal ventilating pipe and connecting interface thereof |
| 12/09/1998 | CN2299976Y Anticorrosive coating for pipe wall |
| 12/03/1998 | WO1998054510A1 Plastic pipe liner, method of production and use thereof |
| 12/03/1998 | DE19722827A1 Cold formable lead-containing brass for sanitary piping |
| 12/03/1998 | DE19721822A1 Kunststoff-Futterrohr, Verfahren für seine Herstellung und Anwendung Plastic casing, process for its preparation and use |
| 12/02/1998 | EP0881730A1 Flexible bundle of tubes |
| 12/02/1998 | CA2239392A1 Reduction of electrostatic charging of particles in pneumatic conveying |
| 12/01/1998 | US5842505 Multi-layer pipe |
| 11/25/1998 | EP0880162A2 Dual walled exhaust tubing for vacuum pump |
| 11/25/1998 | EP0879142A1 Multilayer plastic tubing |
| 11/25/1998 | EP0879131A2 An extrusion apparatus and method, a tubular product, and a pipe |
| 11/25/1998 | EP0870143A4 Pipe insulation |
| 11/25/1998 | CN2298405Y Hydraulic cylinder complement pipe |
| 11/24/1998 | US5839478 Leakproof, high-strength pipe to convey fluids, e.g. water, gasoline, methanol, lubricants, comprising an inner tube of thermoplastic surrounded by a bonded reinforcing metal tape with overlapping edges and a bonded outer sheath |
| 11/19/1998 | WO1998051954A1 Galvanic corrosion protection system |
| 11/18/1998 | EP0878509A1 Adhesion promoter for multilayered composite |
| 11/18/1998 | EP0877887A1 Flexible pipe with internal gasproof undulating metal tube |
| 11/17/1998 | US5837083 Method of forming a rigid tubular body |
| 11/17/1998 | US5836623 Chemical supply lines, aluminum layer, niobium layer |
| 11/17/1998 | CA2164930C Elongated heat exchanger tubes having internal stiffening structure |
| 11/17/1998 | CA2130048C Knuckle for welding of safety hand railings |
| 11/15/1998 | CA2205646A1 Plastic tube with varying layer thickness |
| 11/05/1998 | WO1998049486A1 Pipe for circulating gaseous fluids in motor vehicles |
| 11/05/1998 | WO1998049209A1 Premium pipe resins |
| 11/03/1998 | US5829485 Flexible tubular sleeve |
| 11/03/1998 | US5829483 Hose |
| 10/29/1998 | WO1998047599A1 Filter tube, specially for microspheres |
| 10/28/1998 | EP0873485A1 Multi-lumen plastics tubing |
| 10/27/1998 | US5828003 Composite coiled tubing apparatus and methods |
| 10/22/1998 | WO1998046338A1 Modular filtration systems and methods |
| 10/22/1998 | DE19817343A1 Metal spacer for pipes forming especially central heating flue passing through house loft |
| 10/21/1998 | EP0836692A4 Steel pipe with integrally formed liner and method of fabricating the same |
| 10/21/1998 | CN1196697A Oriented polymeric products |
| 10/21/1998 | CN1196696A Method and apparatus for making extrusion product, and extrusion product |
| 10/21/1998 | CN1196460A Stainless steel waterpipe |
| 10/15/1998 | WO1998045915A1 Improvements in conduit systems |