| Patents for B29L 23 - Tubular articles (4,866) |
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| 10/09/1997 | WO1997036653A1 Frp racket and method for producing the same |
| 10/09/1997 | DE19637795C1 Reinforced multilayer tubing for pipelines lining |
| 10/08/1997 | EP0799397A1 Process for producing a flexible tube for lining pipes, channels or the like |
| 10/08/1997 | EP0712352B1 Process for making a tubular cladding hose |
| 10/07/1997 | US5674588 Welding sleeve for plastic pipe |
| 10/01/1997 | EP0798099A2 Apparatus for welding formed parts |
| 10/01/1997 | EP0797499A1 Surfacing or rehabilitating structures without supporting forms |
| 09/25/1997 | CA2197728A1 Method for providing electromagnetic shielding and diffusion barrier properties of plastic extrusion and devices fabricated therefrom |
| 09/24/1997 | EP0797042A1 An apparatus and a method for lining an underground pipe |
| 09/24/1997 | EP0796717A1 A liner for manhole and a method for lining a manhole |
| 09/23/1997 | US5670111 Coating with bond-preventing agent; forming cavities that may be fluid or gel filled |
| 09/23/1997 | US5670012 Electrically weldable plastic fitting |
| 09/19/1997 | CA2200262A1 A liner for manhole and a method for lining a manhole |
| 09/19/1997 | CA2200261A1 An apparatus and a method for lining an underground pipe |
| 09/17/1997 | EP0795694A2 Bearing retainer for a roller bearing for use in a guide-post of a die-set |
| 09/17/1997 | CN1035897C Apparatus for bending plastic pipe |
| 09/10/1997 | EP0794238A2 Adhesive composition for bonding a lining tube on to the internal surface of an existing pipe |
| 09/10/1997 | EP0793999A2 Driving catalyst and/or accelerator into the pores of microporous particles |
| 09/09/1997 | US5665192 Method of making tubes out of composite material having high tribiological and mechanical characteristics |
| 09/04/1997 | WO1997018412A3 Apparatus for making electrofusion saddle coupler including heat grooving and wire insertion devices |
| 09/02/1997 | US5662972 Tubular laminate and process for producing the same |
| 08/27/1997 | EP0633835B1 Elongate plastic member assembly and method and apparatus for making the same |
| 08/20/1997 | EP0790114A1 Apparatus for producing plastic pipes by rotational moulding |
| 08/20/1997 | EP0789649A1 Method for stripping open ended bellows part from injection mold |
| 08/19/1997 | US5658519 Reinforced plastic piling and method and apparatus for making same |
| 08/13/1997 | EP0789181A1 A reversible lining tube for repairing an existing pipeline |
| 08/13/1997 | EP0788869A1 Method of manufacturing thickwalled pipes of polyethylene |
| 08/12/1997 | CA1339258C Method of making a connector |
| 08/05/1997 | US5653935 Method for manufacturing a thermoplastic pipe |
| 08/05/1997 | US5653265 Hollow plastic product |
| 07/29/1997 | US5651935 Spiral die and laminate production method using same |
| 07/23/1997 | EP0785388A2 Method of lining a pipeline |
| 07/23/1997 | EP0735946B1 Apparatus for making annularly ribbed plastic pipe and method of making such pipe |
| 07/22/1997 | US5650224 Elongated structural member and method and appartus for making same |
| 07/16/1997 | EP0644825B1 Vacuum advance system for high speed contact sealer for forming a flat film into a tube |
| 07/15/1997 | US5647401 Reinforcing-thread-buried resin pipe |
| 07/09/1997 | EP0782497A1 Carbon containing vascular graft and method for making same |
| 07/09/1997 | EP0535247B1 Pipe joint member |
| 07/09/1997 | CN1154085A Travelling mold with separation of mold blocks |
| 07/03/1997 | WO1997023359A1 Tube tire |
| 07/02/1997 | CN1153101A Tubular object manufacturing method and tubular object |
| 06/25/1997 | EP0780208A1 Insert molding system |
| 06/18/1997 | CN1152282A Method and apparatus for forming seal portion of laminated aluminum tube |
| 06/17/1997 | US5639488 Molding apparatus |
| 06/17/1997 | US5639409 Method for manufacturing a tubular extrusion |
| 06/11/1997 | EP0778123A2 Tube connecting apparatus |
| 06/11/1997 | EP0777567A1 Porous polytetrafluoroethylene compositions |
| 06/11/1997 | EP0666790B1 Process for manufacturing formed parts made of hot-formable plastics |
| 06/03/1997 | US5634498 Lubricous flexible synthetic hose and method for producing same |
| 05/27/1997 | US5632852 Ion generator in connect/disconnect of plastic tubes |
| 05/27/1997 | US5632845 Method for welding tubular parts |
| 05/22/1997 | WO1997018412A2 Apparatus for making electrofusion saddle coupler including heat grooving and wire insertion devices |
| 05/22/1997 | WO1997018076A1 Method for stripping open ended bellows part from injection mold |
| 05/22/1997 | CA2237433A1 Method for stripping open ended bellows part from injection mold |
| 05/21/1997 | EP0773859A1 Method of shaping structures with an overcoat layer including female urinary catheter |
| 05/20/1997 | US5630975 Method and a device for joining at least two plastic elements in a liquid- and/or gastight manner |
| 05/15/1997 | WO1997010936A3 Method for heating and/or cross-linking of polymers and apparatus therefor |
| 05/14/1997 | EP0719206B1 Pipe coupling |
| 05/07/1997 | CN1149014A Apparatus for manufacturing thermoplastic plastic pipes with lateral features of shape |
| 04/23/1997 | EP0769452A1 Method and apparatus for forming seal portion of laminated aluminum tube |
| 04/16/1997 | EP0767729A1 Clean air ducts and methods for the manufacture thereof |
| 04/16/1997 | EP0707531B1 Applying linings to pipelines and passageways |
| 04/16/1997 | CN1147851A Method and apparatus for lining a pipe with a polymer liner |
| 04/16/1997 | CN1147789A Gap adjustment of a plastic flow channel in a plastic part forming device |
| 04/16/1997 | CN1147787A Travelling mold with mold block carriers |
| 04/16/1997 | CN1147447A Process and device for coextrusion of two materials at different temperatures |
| 04/15/1997 | US5620763 Thin-wall, seamless, porous polytetrafluoroethylene tube |
| 04/09/1997 | EP0672214A4 Stabilized porous pipe. |
| 04/09/1997 | CN1034483C Method for jointing together plastic elements by thermal welding and connection component thereby |
| 04/02/1997 | EP0765740A2 PVC-free multilayered tube for medical uses, method for its manufacture and use |
| 04/01/1997 | US5616638 Curing a coextruded acrylic copolymer blends comprising reactive monomer acrylic silanetriol, free radical nitroxide and a polymerization catalyst |
| 03/27/1997 | WO1997010942A1 A method of socketing a pipe |
| 03/27/1997 | WO1997010941A1 Oriented polymeric products |
| 03/27/1997 | WO1997010936A2 Method for heating and/or cross-linking of polymers and apparatus therefor |
| 03/26/1997 | EP0764516A2 Apparatus for producing transversely grooved thermoplastic tubes |
| 03/26/1997 | CN1146176A Process for manufacturing tube from plastic |
| 03/26/1997 | CN1034364C Multilayer pipe and die for manufacturing it |
| 03/20/1997 | WO1997010092A1 An apparatus and method for adjusting a mandrel and a kernel while producing a plastic pipe |
| 03/19/1997 | EP0670768B1 Extrusion equipment having means for adjusting a delivery end of a die with respect to the extruder for alignment with downstream equipment |
| 03/19/1997 | CN1145600A Porous polyetetrafluoroethylene compsn. |
| 03/18/1997 | CA2057191C Ribbonizing method and apparatus |
| 03/05/1997 | EP0697952B1 Electric plug connector for thermoplastic electric welding sleeves |
| 02/27/1997 | WO1997001429A3 An extrusion apparatus and method, a tubular product, and a pipe |
| 02/26/1997 | EP0758950A1 Gap adjustment of a plastic flow channel in a plastic part forming device |
| 02/19/1997 | EP0758527A1 Sausage casings based on polyamide having improved peelability characteristics |
| 02/19/1997 | EP0758290A1 Travelling mold with mold block carriers |
| 02/19/1997 | EP0758289A1 Travelling mold with separation of mold blocks |
| 02/19/1997 | CN1034063C Equipment for welding melt-weldable plastic pipe element |
| 02/11/1997 | US5601776 Method and a mould for forming an expansion, such as a socket, in a pipe, and a plastic pipe |
| 02/11/1997 | US5601315 Molded connector for branch connections for a pipeline |
| 02/04/1997 | US5598873 Branch pipe lining method and liner |
| 01/29/1997 | EP0755322A1 Process for manufacturing a tube from plastic |
| 01/22/1997 | EP0754535A1 Method and apparatus for coextruding two materials having different temperatures |
| 01/22/1997 | EP0592458B1 Extrusion die with interchangeable extrusion nozzles |
| 01/16/1997 | WO1997001429A2 An extrusion apparatus and method, a tubular product, and a pipe |
| 01/16/1997 | WO1997001428A1 Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus |
| 01/16/1997 | CA2233030A1 A tubular product and an extrusion apparatus and method |
| 01/16/1997 | CA2225419A1 An extrusion apparatus and method, a tubular product, and a pipe |
| 01/14/1997 | US5593550 Modifying slip characteristics of surface of elongated passageway in polymeric tubing, e. g., by forming glow discharge in gas in passageway of plastic tubing by reactance coupling using pulsed radio frequency power |
| 01/08/1997 | EP0752305A2 A method for lining a bent pipe |