| Patents for B28B 21 - Methods or machines specially adapted for the production of tubular articles (3,281) |
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| 05/14/2009 | WO2009062000A2 Wall block with weight bearing pads and method of producing wall blocks |
| 05/14/2009 | WO2009060339A2 Flange for self-supporting rigid hollow body, method for making such a hollow body using such flanges, and equipment for implementing said method |
| 05/14/2009 | WO2009060338A2 Rigid self-supporting hollow body, constructions produced with one or more such hollow bodies and method for making such constructions |
| 05/14/2009 | US20090120029 Wall block with weight bearing pads and method of producing wall blocks |
| 05/14/2009 | CA2700226A1 Wall block with weight bearing pads and method of producing wall blocks |
| 05/06/2009 | CN100484735C Reinforced concrete resin slurry casting pipe and method for manufacturing the same |
| 04/30/2009 | US20090112066 Endoscope flexible tube and its manufacturing method |
| 04/23/2009 | US20090101580 Production of monolithic separating columns |
| 04/22/2009 | CN201224150Y Adjusting hoop for pipe pile formwork |
| 04/16/2009 | WO2009048423A1 Method and apparatus for forming articles |
| 04/16/2009 | US20090098237 Thermoplastic resin foam and production process thereof |
| 04/16/2009 | US20090098236 Device for Sheathing a Strip of Filaments, the Device having Symmetrical Feed Channels |
| 04/15/2009 | CN101407090A Centrifugal shaper for concrete prefabricated element |
| 04/15/2009 | CN101406782A Method for producing silicon carbide porous ceramic filtering element and extrusion apparatus |
| 04/08/2009 | CN100475475C Secondary tubular pile tensioning process by prestress and special tensioner |
| 04/08/2009 | CN100475473C Moulding insert for moulding machines |
| 04/02/2009 | WO2009041915A1 Dual sleeve moulding method and apparatus |
| 04/02/2009 | US20090084793 Precast concrete meter pit and method and apparatus for making same |
| 04/01/2009 | CN201214277Y Socket shaping bulkhead for mould-pipe centrifugal inner lining |
| 04/01/2009 | CN101396847A Concrete pipe anti-leak treatment technique and special device |
| 03/25/2009 | CN101391458A Method for preparing anti-crack and anti-seepage concrete pipes |
| 03/25/2009 | CN101391456A Strainer production method for pumping well |
| 03/25/2009 | CN101391455A Pneumatic vibration molding method for prestressed concrete pipe |
| 03/17/2009 | US7504063 Method of producing molded green body and producing insert by baking the green body |
| 03/12/2009 | US20090069748 Pushable balloon catheter assembly |
| 03/11/2009 | CN101380781A Light-wall conduit centrifugal shaper |
| 03/11/2009 | CN101380780A Light-wall conduit centrifugal shaper |
| 03/11/2009 | CN101380779A Light-wall conduit centrifugal shaper |
| 03/11/2009 | CN101380778A Light-wall conduit centrifugal shaper |
| 03/05/2009 | US20090058068 Method for binding a book with a helical plastic coil |
| 03/05/2009 | US20090057948 Method and apparatus for manufacturing a curved elongated structural element |
| 03/04/2009 | CN201201303Y Multifunctional vase column forming machines |
| 02/25/2009 | EP1675712A4 A fibre reinforced cement column and method of forming the same |
| 02/18/2009 | CN101367249A Rotational forming machine of thin walled pipe |
| 02/11/2009 | EP2021154A1 Mould sleeve and moulding method |
| 02/11/2009 | CN101363560A Ceramic composite pipe for conveying flue gas desulfurization glue size in electric power plant and method for manufacturing same |
| 02/04/2009 | CN201189699Y PCCP mortar protection layer synchronous slicking device |
| 02/04/2009 | CN100457412C Shaping machine of vertical cement tube |
| 02/04/2009 | CN100457411C Rotary apparatus and method for winding protective GRP layer to make heavy concrete pipe pile |
| 01/29/2009 | US20090028982 Extrusion die for molding honeycomb structures |
| 01/29/2009 | US20090028977 Extrusion Method and Extrusion Device |
| 01/28/2009 | CN101356046A Process for the production of piping made of a cementitious material having a circular section |
| 01/27/2009 | US7481962 Method of manufacturing cordierite honeycomb structure including measuring cleavage index of kaolin particles |
| 01/21/2009 | CN201183288Y Centrifugal type cement product shaping apparatus |
| 01/21/2009 | CN101347959A Filling relief tube mold and method for producing filling relief tube with the mold |
| 01/14/2009 | EP2012989A1 Method for the production of a collecting line for detecting and locating an agent discharging into the environment of the collecting line in case of leakage, and collecting line produced by means of this method |
| 01/08/2009 | US20090008822 Method for forming a hollow plastic product |
| 01/07/2009 | EP1385679A4 Method of assembling a ceramic body |
| 01/06/2009 | US7473392 Low coefficient of thermal expansion; forming a slurry of a MgO source and an Al2O3 source; removing the solvent; adding a SiO2 source; mixing in a binder to form a plasticized cordierite precursor; forming a green body; and firing to provide a ceramic article |
| 01/01/2009 | US20090004318 Induction tunnel coil |
| 01/01/2009 | US20090003926 Socketing of Pipe |
| 12/31/2008 | WO2005086792A3 Apparatus and method for fabricating writing instruments |
| 12/31/2008 | CN101336151A Process for the production and form preservation of an extruded product made of cementitious material |
| 12/31/2008 | CN101333853A Mould molding hollow thin wall element |
| 12/30/2008 | CA2396890C Method and device for producing a straight cylindrical body by molding using a loose hardenable granular material and the utilization thereof for producing a tube |
| 12/27/2008 | CA2635279A1 Concrete form for pouring non-round columns, and method of making same |
| 12/24/2008 | CN101327617A Tunnel concrete tunnel segment steel mould side board translational opening-closing device |
| 12/24/2008 | CN101327616A Thin walled pipe centrifugal shaper |
| 12/24/2008 | CN100445060C Manufacturing method of precasting hollow thin shell column and its device |
| 12/17/2008 | EP1658164A4 Method and apparatus for extruding a ceramic material |
| 12/17/2008 | CN101323147A Centrifugal shaping tool |
| 12/17/2008 | CN101323146A Centrifugal shaping tool |
| 12/17/2008 | CN101323145A Centrifugal shaping tool |
| 12/17/2008 | CN101323144A Centrifugal shaping tool |
| 12/17/2008 | CN101323143A Centrifugal shaping tool |
| 12/17/2008 | CN101323142A Centrifugal shaping tool |
| 12/17/2008 | CN101323141A Centrifugal shaping tool |
| 12/17/2008 | CN101323140A Thin walled pipe centrifugal shaper |
| 12/17/2008 | CN101323139A Thin walled pipe centrifugal shaper |
| 12/17/2008 | CN101323138A Thin walled pipe centrifugal shaper |
| 12/17/2008 | CN101323137A Thin walled pipe centrifugal shaper |
| 12/17/2008 | CN101323136A Thin walled pipe centrifugal shaper |
| 12/17/2008 | CN101323135A Thin walled pipe centrifugal shaper |
| 12/10/2008 | EP1578574A4 Moulding of concrete articles |
| 12/04/2008 | US20080299246 Multiple-shot injection mold assembly and a component having a retention rib made therewith |
| 12/03/2008 | CN201158097Y Large diameter pretensioned prestressing concrete tubular pipe |
| 11/20/2008 | US20080286401 Light transmissive stamper |
| 11/18/2008 | CA2362391C Process and device for producing components and semi-finished products from synthetic graphite or ceramic granules, in particular for producing graphite tubes |
| 11/05/2008 | CN101298895A Production process of energy conservation and heat preserving ventilating duct |
| 11/05/2008 | CN101298171A Slight ceramic tube and shaping method thereof |
| 11/05/2008 | CN101298170A Making method of fastener type core hole tube type composite body member and utensils therefor |
| 10/30/2008 | US20080265657 Method and apparatus for producing a rim |
| 10/30/2008 | DE102007048635A1 Hollow profile, especially a pipe or slotted ring, made of reinforced concrete comprises a combined prestressed and non-prestressed reinforcement extending along the profile length |
| 10/29/2008 | CN101294455A Insulated standard and processing technique thereof |
| 10/28/2008 | US7442425 High porosity honeycomb and method |
| 10/28/2008 | US7442279 Over drying the paper web by a dryer; transporting the paper web to a reel; and supplying dry air adjacent at least a portion of the paper web's travel path from the dryer to the reel; high levels of softness and high levels of bulk |
| 10/23/2008 | WO2007149964A3 Round rubber champhering ring |
| 10/23/2008 | US20080258356 Integrally blow-moulded bag-in-container comprising an inner layer and an outer layer comprising energy absorbing additives, and preform for making it |
| 10/23/2008 | US20080256789 System, Method and Apparatus for Configuring an End of Arm Tool in a Molding System |
| 10/22/2008 | CN201136221Y End mould-fixed type concrete segment mould |
| 10/22/2008 | CN101288979A Detachable tooth shape, different diameter tooth shape pile die |
| 10/22/2008 | CN101288978A Centrifugal forming tool |
| 10/22/2008 | CN101288977A Centrifugal forming tool |
| 10/22/2008 | CN101288976A Centrifugal forming tool |
| 10/22/2008 | CN101288975A Centrifugal forming tool |
| 10/22/2008 | CN101288974A Centrifugal forming tool |
| 10/22/2008 | CN101288973A Centrifugal forming tool |
| 10/22/2008 | CN101288972A Centrifugal forming tool |
| 10/22/2008 | CN101288971A Centrifugal forming tool |
| 10/15/2008 | CN101285545A Inner core foaming -type metal pipes and method of manufacture |