| Patents for B28B 21 - Methods or machines specially adapted for the production of tubular articles (3,281) |
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| 11/07/1995 | US5465184 Hard disc drives and read/write heads formed from highly thermally conductive silicon carbide |
| 11/01/1995 | CN2211349Y Small diameter cement pipe making machine |
| 10/26/1995 | DE4424223C1 A continuous wrapped belt fabric is mfd. aesthetically, economically |
| 10/25/1995 | EP0678068A1 Highly inorganically filled compositions |
| 10/11/1995 | EP0675787A1 A production system for automatic casting of hollow bodies, in particular of concrete |
| 10/10/1995 | US5456590 Counter-rotating compaction head for manufacturing concrete pipes |
| 10/04/1995 | EP0674959A1 Method for subjecting powder-molded material to isostatic pressing |
| 10/04/1995 | EP0674574A1 Apparatus for centrifuging a hardenable liquid material and uses thereof |
| 10/04/1995 | EP0674573A1 A machine for vertical casting of pipes of concrete or a similar material in a mould system with a distributor wheel |
| 09/27/1995 | EP0673734A1 Pre-cast concrete element and method of making same |
| 09/27/1995 | EP0673685A1 Pneumatic vibrator |
| 09/21/1995 | DE4409083A1 Compression head of fabrication machine for steel concrete pipe |
| 09/13/1995 | EP0670763A1 Method and device for producing concrete pipes of uniform length |
| 09/12/1995 | US5449283 Machine for vertical casting of pipes of concrete or a similar material in a mould system with a distributor wheel |
| 09/07/1995 | DE4427588C1 Production process for profiled, tubular basic blanks from clay and similar |
| 09/06/1995 | EP0670207A1 Device for making cylindrical tubular products |
| 09/05/1995 | US5447666 Method of forming radiant fiber burner |
| 08/30/1995 | EP0669192A1 Process and device for making a reinforced concrete driving pipe |
| 08/29/1995 | US5445772 Method of producing patterned shaped article |
| 07/25/1995 | US5435950 Method for forming a nozzle employed in continuous casting |
| 07/20/1995 | DE4440943A1 Device for prodn. of ring and tubular workpieces of concrete |
| 07/19/1995 | EP0565540B1 Process and device for producing moulded parts from moulding compound |
| 07/18/1995 | US5433902 Method of making a rigid tubular article |
| 07/18/1995 | US5433523 Vibrators |
| 07/12/1995 | EP0662029A1 Hydraulically settable containers |
| 06/28/1995 | CN2202030Y Vibrating concrete pipe making machine with a vertical core |
| 06/22/1995 | WO1995016872A1 A sealing device, a mould element and a pipe |
| 06/22/1995 | CA2156054A1 A sealing device, a mould element and a pipe |
| 06/14/1995 | CN2200525Y Pipe making machine |
| 06/13/1995 | US5423634 Adjustment of particle size of cements; water-sprayed to reduce loss on ignition; water-reducing agent |
| 05/17/1995 | EP0653289A1 Process, device and material for making moulded products from concrete resin |
| 05/17/1995 | CN2197189Y Mixing mold for fabricated cement pipes |
| 05/11/1995 | DE4407299C1 Device for producing hollow-cylindrical products |
| 05/02/1995 | CA2133505A1 Chimney lining former and compactor |
| 04/26/1995 | EP0649715A1 Device for making annular or tubular articles from concrete |
| 04/26/1995 | CN2195423Y Vibrator |
| 04/22/1995 | CA2118283A1 Apparatus for manufacturing annular or tubular workpiece from concrete |
| 04/13/1995 | DE4333958A1 Process and apparatus for forming a clot (blank) from a formable material, such as clay |
| 04/06/1995 | WO1995009373A1 Capillary for optical fiber connectors and method of manufacturing the same |
| 04/06/1995 | WO1995009073A1 Method and device for producing concrete pipes of uniform length |
| 03/29/1995 | EP0513088B1 A method and apparatus for coating the outer surface of an elongated body with a layer of concrete |
| 03/14/1995 | US5396686 Method for automatically tightening and untightening a bolt |
| 03/02/1995 | DE4422891C1 Compression head of a manufacturing machine for reinforced concrete pipes |
| 02/07/1995 | CA2055141C Concrete pipe making machine |
| 02/01/1995 | CN2188471Y Verticle concrete pipe forming machine |
| 01/25/1995 | EP0634959A1 Process and device for the continuous production of cylindrical rods with at least one internal helical channel, and sinter blank made by this process. |
| 01/24/1995 | US5384085 Method of making graphite composite shafts |
| 01/11/1995 | EP0633107A1 Apparatus for finishing concrete pipes |
| 01/04/1995 | CN2186647Y Cast stone pipe with reinforced layer |
| 12/20/1994 | US5374412 Produced by high temperature vapor deposition |
| 12/06/1994 | US5371068 Process for producing tubular molded parts of high temperature superconductor material |
| 11/29/1994 | US5368791 Method of producing patterned shaped article |
| 11/15/1994 | US5364578 Combination counter rotating packerhead and vibrator assembly and method of operation thereof |
| 11/08/1994 | US5362224 Chimney lining former and compactor |
| 11/02/1994 | CN1026395C Method of manufacturing hollow concrete pile and apparatus for manufacturing the same |
| 10/25/1994 | CA2020907C Lined pipe and forming method and apparatus thereof |
| 10/23/1994 | CA2121609A1 Tricyclic quinoxalinedione derivatives |
| 10/12/1994 | CN1093349A Hydraulic composition and process for producing concrete pile using the same |
| 09/27/1994 | US5350139 Mandrel for making a rigid tubular article |
| 09/22/1994 | DE4308906A1 Hydraulic mixture and use thereof for producing concrete pillars |
| 09/14/1994 | CN2176890Y Automatic compacting prefabricated device for cement rain pipe |
| 09/07/1994 | CN1091691A Method for forming holes in concrete member using rubber rods as form cores |
| 08/17/1994 | EP0610690A1 Method and apparatus for the manufacture of a spigot end on a concrete or reinforced concrete pipe |
| 08/11/1994 | DE4403342A1 Apparatus for working the end of a concrete or reinforced-concrete pipe |
| 07/27/1994 | CN2172700Y Concrete pipe |
| 07/13/1994 | EP0606107A1 Spacer embadded in concrete |
| 07/13/1994 | EP0605950A1 Improvements in concrete pipe fabrication |
| 06/23/1994 | WO1994013449A1 Apparatus for centrifuging a hardenable liquid material and uses thereof |
| 06/23/1994 | WO1994013448A1 A production system for automatic casting of hollow bodies, in particular of concrete |
| 06/23/1994 | CA2151844A1 Centrifugation facility for hardenable fluid material and products made with such method |
| 06/21/1994 | US5322656 Method and apparatus for coating the outer surface of an elongated body with a layer of concrete |
| 06/09/1994 | WO1994012328A1 Highly inorganically filled compositions |
| 05/24/1994 | CA1329707C Spacer suited for being embedded in concrete |
| 05/18/1994 | CN2164974Y Poured cement pipe extruder |
| 04/12/1994 | US5302221 Pipe wrapping method |
| 04/12/1994 | CA1328347C Tubular ceramic articles, methods and apparatus for their manufacture |
| 03/30/1994 | EP0589196A1 Device for making concrete pipes |
| 03/23/1994 | EP0588479A1 Highly polishable, highly thermally conductive silicon carbide, method of preparation and applications thereof |
| 03/16/1994 | CN1083762A Make-up machine of concrete drain pipe with automatic demoulding function |
| 03/10/1994 | DE4329383A1 Retractor for mould muff from annular concrete component centring lug |
| 03/09/1994 | CN2158335Y Machine for making cement culvert pipe |
| 03/03/1994 | WO1994004330A1 Hydraulically settable containers |
| 03/03/1994 | CA2137347A1 Hydraulically settable containers |
| 03/02/1994 | CN2157861Y Automatic demoulding concrete exhaust water pipe forming machine |
| 03/02/1994 | CN1082973A Machine for making pipe and underground Spodosol protecting wall |
| 02/23/1994 | CN2157006Y Filtering drainage pipe for low waterlogged land |
| 02/23/1994 | CN1082756A Process for producing tubular moldings from high-temperature superconducting material |
| 02/15/1994 | US5286440 Method for the production of a symmerical oval concrete pipe |
| 02/09/1994 | EP0582444A1 Ultra pure silicon carbide and high temperature semiconductor processing equipment made therefrom |
| 02/09/1994 | CN2155299Y Preloaded rubber mould for concrete spigot and faucet pipes |
| 02/02/1994 | CN2154772Y Concrete compound pipe pipe-laying machine |
| 02/01/1994 | CA2099788A1 Ultra pure silicon carbide and high temperature semiconductor processing equipment made therefrom |
| 01/27/1994 | DE4224410A1 Elastomer sealing ring for push-in connection and reusable inner sleeve - has radially deformable inner part to allow removal of sleeve and sleeve lining while anchored in pipe wall. |
| 01/25/1994 | US5280972 Pipe joint |
| 01/19/1994 | EP0578944A1 Process for the production of concrete tiles |
| 01/05/1994 | CN2151847Y Centrifugal vibrative forming device |
| 12/21/1993 | US5271193 Concrete products and methods of fabrication |
| 12/15/1993 | EP0471714B1 Aluminium oxide tubes and process for manufacturing them |
| 12/14/1993 | US5269113 Spacer suited for being embedded in concrete |
| 12/08/1993 | CN1079183A Improved process for the production of cement slabs |