| Patents for B29L 23 - Tubular articles (4,866) |
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| 08/22/1990 | CN1009262B Method for producing seamless thin-layer products |
| 08/16/1990 | EP0381938A1 Cooling plugs in thermoplastic pipe forming apparatus |
| 08/08/1990 | EP0380686A1 Production method of rubber tube and resin coating apparatus used therefor |
| 08/07/1990 | US4946364 Apparatus for manufacturing reinforced polymeric tubing |
| 08/01/1990 | CN1044253A Improvements in or relating to cooling plugs in thermoplastic pipe forming apparatus |
| 07/25/1990 | EP0379380A2 A method of connecting plastic tubes |
| 07/25/1990 | EP0378625A1 Device for welding tubular plastic elements. |
| 07/17/1990 | US4942070 Thermoplastic polymer, crystal structure |
| 07/11/1990 | EP0377382A1 Method for integrating a metallic sleeve in a tube of a wrapped composite material |
| 07/11/1990 | CN1008710B Apparatus for producing double-walled corrugated pipes |
| 07/11/1990 | CN1008707B Extrusion die for externally ribbed plastic tubing |
| 07/05/1990 | DE3900068A1 Process and apparatus for producing a cage for rolling-contact bearings |
| 06/20/1990 | EP0373618A2 Forming thermoplastic material |
| 06/05/1990 | US4931006 Installation for producing packaging containers |
| 05/31/1990 | WO1990005627A1 High speed contact sealer |
| 05/29/1990 | US4929168 Apparatus for producing a tubular object of polyethelene terephthalate or other thermoplastic material from a tubular blank of amorphous material |
| 05/23/1990 | CN1008078B Apparatus for molding thermoplastic pipes |
| 05/22/1990 | US4927642 Apparatus for welding tubular components of thermoplastic material |
| 05/15/1990 | CA1268914A1 Two-material molding process and device |
| 05/09/1990 | EP0366667A1 Process for manufacturing a cock consisting of a plug and a housing for medical equipment. |
| 05/09/1990 | CN1007884B Seamless laminar article |
| 05/08/1990 | CA1268615A1 Method and an apparatus for the production of ribbed pipes |
| 05/08/1990 | CA1268610A1 Method of spin-welding |
| 05/01/1990 | US4921570 Apparatus for manufacturing a welded connection of tubular components of thermoplastic material |
| 04/19/1990 | WO1990000112A3 Device for welding tubular plastic elements |
| 04/18/1990 | EP0363384A1 Plastic tube with solid cross-ribs on the outer surface, a moulding device therefor; installation comprising such a device and a method for moulding a plastic tube |
| 04/11/1990 | CN1041131A Improvements in or relating to apparatus for producing pipe with annular ribs |
| 04/11/1990 | CN1041130A Improvements in suction applying molded blocks in pipe forming apparatus |
| 04/11/1990 | CN1007551B Plastic corrugated tube with integrally molded sleeve coupler |
| 04/03/1990 | US4913764 Device for manufacturing shells of mineral fibers |
| 03/21/1990 | EP0359089A2 Improvements in suction applying molded blocks in pipe forming apparatus |
| 03/21/1990 | EP0359088A2 Apparatus for producing a pipe with annular ribs |
| 03/14/1990 | CN1007139B Extrusion die for two-ply plastic tubing |
| 03/13/1990 | US4907957 Molding apparatus for forming a parison and product of differing materials |
| 03/08/1990 | WO1990002038A1 Method and device for joining together of tubular plastic products |
| 03/06/1990 | US4906496 Double-walled tube assembly |
| 03/06/1990 | US4906171 Directed flow die assembly |
| 02/28/1990 | CN1006970B Apparatus and method for production of ribbed pipes |
| 02/28/1990 | CN1006969B Method and apparatus for production of ribbed pipes |
| 02/27/1990 | US4904176 Device for continuously producing reinforced stabilizable profiled bodies by a mandrel and a support |
| 02/26/1990 | EP0291515A4 Radio frequency method of sealing an article. |
| 02/21/1990 | CN1039755A Plastic coated steel tube |
| 02/20/1990 | US4902419 Product and method for fastening soft porous tubes |
| 02/13/1990 | US4900503 Method and apparatus for producing a finned tube from synthetic plastics material |
| 02/07/1990 | EP0353912A2 Heat fusion pipe fitting system |
| 02/06/1990 | US4898703 Utilization of polyester in place of lead for use as a sheathing material for curing long length hose |
| 01/31/1990 | EP0352255A1 A method and an apparatus for the production of ribbed pipes. |
| 01/31/1990 | CN1039210A Seamless laminar article |
| 01/30/1990 | CA1265029A1 Mineral fiber shell manufacturing process and device |
| 01/24/1990 | CN1006572B Methods and apparatus for fabricating inorganic fibre shell |
| 01/16/1990 | US4894521 Electric heating element for fusing thermoplastic materials |
| 01/16/1990 | US4894268 Stretch blow-molded polyethylene terephthalate wide mouth container and intermediate article |
| 01/11/1990 | WO1990000113A1 Production method of rubber tube and resin coating apparatus used therefor |
| 01/11/1990 | WO1990000112A2 Device for welding tubular plastic elements |
| 01/03/1990 | EP0349356A1 Apparatus and method for extruding homogeneous plastic pipes |
| 12/28/1989 | WO1989012545A1 Methods and devices which make use of conductive polymers to join articles |
| 12/27/1989 | CA1264010A1 Process for connecting of hollow section bodies with molded bodies made of thermoplastic |
| 12/20/1989 | EP0347200A2 Extruder die assembly and extrusion method |
| 12/20/1989 | CN1038151A Lining of pipes |
| 12/14/1989 | WO1989011964A1 Bonded article |
| 12/13/1989 | EP0346101A2 Plastic coated steel tube |
| 12/13/1989 | CN1006049B Method of continuously vulcanizing hoses |
| 12/12/1989 | US4886634 Process and apparatus for the production of an extruded, stretched, seamless tube |
| 12/06/1989 | EP0344342A1 Electrical control device providing control signals for the die movement of an extruder |
| 11/30/1989 | WO1989011318A1 Process for producing silicon caoutchouc tube membranes with mechanical wall reinforcement, development of tube membranes with mechanical wall reinforcement and their use |
| 11/30/1989 | DE3817560A1 Verfahren zur herstellung von rohrmembranen aus silikonkautschuk mit einer mechanischen wandverstaerkung, ausbildung von rohrmembranen mit einer mechanischen wandverstaerkung und anwendung dieser rohrmembranen Process for the manufacture of tubular membranes made of silicone rubber with a mechanical wandverstaerkung, training of tubular membranes with a mechanical wandverstaerkung and application of these tubular membranes |
| 11/28/1989 | US4883550 Method of manufacturing fiber-reinforced articles or plastics material |
| 11/21/1989 | US4882104 Method of controlling the thickness of an extruded plastic article |
| 11/15/1989 | EP0341940A1 Method for the lining of existing pipes |
| 11/14/1989 | US4880580 Reusable plastic drum container assembly and process for refitting such plastic drum container assembly |
| 11/08/1989 | EP0341033A2 An extrusion process and apparatus therefor |
| 11/02/1989 | EP0339533A2 Apparatus for manufacturing heat-shrinkable resin tube |
| 10/25/1989 | EP0338774A2 Method for fastening soft porous tubes |
| 10/18/1989 | EP0337805A2 Metal mold for injection molding tubular or columnar products and molded product obtained by using same |
| 10/10/1989 | US4872424 Intake manifold with removable baffles |
| 10/03/1989 | US4871347 Apparatus for forming a flexible tubing from a single-ply or multi-ply web |
| 09/27/1989 | EP0334648A2 Improvements in or relating to methods of manufacturing tube coupling bodies |
| 09/21/1989 | WO1989008546A1 Manufacture of a reinforced tubular article |
| 09/21/1989 | WO1989008545A1 Manufacture of a tubular article |
| 09/19/1989 | US4867928 Apparatus and a method for the production of ribbed pipes |
| 09/19/1989 | US4867921 Process for installing a new pipe inside an existing pipeline |
| 09/12/1989 | US4865797 Method and an apparatus for the extrusion of plastic pipes |
| 09/08/1989 | WO1989008019A1 A tube-forming machine |
| 09/08/1989 | WO1989008018A1 A pipe-forming machine |
| 08/30/1989 | CN1035080A Stretch blow-molded polyethylene terephthalate wide mouth container and intermediate article |
| 08/23/1989 | EP0328600A1 Corrugated pipe connector |
| 08/08/1989 | US4854836 Collapsible conduit for linear peristaltic pump and method of making the same |
| 08/08/1989 | CA1320323E Extrusion die for externally ribbed plastic tubing |
| 08/08/1989 | CA1258156A1 Extrusion die for externaly ribbed plastic tubing |
| 07/19/1989 | EP0161862B1 Device for r.f. welding an i.v. tube to a catheter lumen |
| 07/12/1989 | EP0323793A1 Method for connecting plastic pipes |
| 07/11/1989 | US4846648 Triple-wall foam coextrusion apparatus |
| 07/05/1989 | EP0323089A2 Extrusion apparatus |
| 07/05/1989 | EP0261217B1 A method and an apparatus for the production of pipes |
| 07/04/1989 | CA1256663A1 Heat-fusion pipe fitting system |
| 06/29/1989 | WO1989005723A1 A pipe-forming machine |
| 06/20/1989 | US4840826 Fiber reinforced plastic solid or hollow molded article |
| 06/20/1989 | US4840552 Apparatus for continuously producing heat-shrinkable crosslinked resin tube |
| 06/14/1989 | EP0320151A2 PET intermediate article |
| 06/07/1989 | EP0319023A2 Reusable plastic drum container assembly and process for refitting such plastic drum container assembly |