| Patents for B21C 23 - Extruding metal; Impact extrusion (6,435) |
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| 01/30/1990 | US4896551 Starter motor and process of forming pinion shaft used in the starter motor |
| 01/30/1990 | US4896521 Process for manufacturing a tubular semifinished copper alloy part |
| 01/24/1990 | CN2051535U Improved pressing die device |
| 01/24/1990 | CN2051534U Combined type porous pipe material extrusion die |
| 01/23/1990 | US4895507 Die assembly exchanging apparatus for extruder |
| 01/23/1990 | US4895506 Extrusion press |
| 01/03/1990 | CN2050353U Thermal constant temp. compression dies for flat materials |
| 01/03/1990 | CN1038459A High-molecular polyvinyl alcohol lubricating coating film and its preparation |
| 12/27/1989 | CN2049972U Multi-work place bend pushing machine |
| 12/20/1989 | EP0182911B1 Indirect extrusion method and apparatus |
| 11/21/1989 | US4881431 Hard metal core and casing forming composite body |
| 11/08/1989 | EP0340495A2 Extrusion tool |
| 11/07/1989 | US4878370 Cold extrusion process for internal helical gear teeth |
| 10/31/1989 | US4876868 Method for forming an object of metal by cold pressing |
| 10/03/1989 | US4870851 Apparatus for producing stranded cable |
| 09/26/1989 | CA1260869A1 Method for cladding a wire-shaped steel element with an aluminium coating |
| 09/20/1989 | CN2044522U Heater for internal mould tub |
| 09/14/1989 | DE3836702C1 Extrusion press for indirect extrusion of metal |
| 09/12/1989 | US4865933 Battery grid structure made of composite wire |
| 09/12/1989 | CA1259305A1 Sulfur-containing compositions, and additive concentrates, lubricating oils, and metal working lubricants containing same |
| 09/05/1989 | US4862721 Multiple cylinder extrusion apparatus and method |
| 08/29/1989 | US4860565 Process for preparing hollow aluminum extrudates for use in vacuum |
| 08/29/1989 | US4860542 Piston-cylinder pulsator circuit with superplastic alloy pressure transmitting medium |
| 08/23/1989 | EP0329567A1 Method for extruding metal, particularly aluminium and extruding press for carrying out this method |
| 08/23/1989 | EP0328732A1 Process for the manufacture of an object by cold extrusion |
| 08/23/1989 | CN2043425U Colour tv wiring mechanism |
| 08/15/1989 | US4856314 Die exchange device for horizontal axis extruding presses |
| 08/09/1989 | EP0327064A2 Process for preparing articles by powder metallurgy, especially elongated articles such as rods, sections, tubes or such |
| 08/09/1989 | EP0326602A1 Continuous extrusion apparatus |
| 08/02/1989 | EP0326008A2 A method for improving the backward extrusion rate of brass billets and the like, and an apparatus for the implementation thereof |
| 08/01/1989 | US4852233 Method of manufacturing extruded flat multihole aluminum tube for heat-exchanger |
| 07/26/1989 | CN2041597U Core rod for heavy calibre gapless bend pushing |
| 07/11/1989 | US4846264 Composite pipe, process for producing the same, and heat pipe using the same |
| 07/05/1989 | CN1033585A Process for manufacturing tubular semifinished copper alloy part |
| 07/04/1989 | USH647 Disk performance by co-extrusion |
| 06/29/1989 | DE3742535A1 Piston extruding press |
| 06/07/1989 | EP0318631A2 Extrusion press |
| 06/06/1989 | CA1255083A1 Method and assembly for producing extrusion-clad tubular product |
| 05/24/1989 | EP0316344A1 Indirect extrusion press with ram-mounted turret supporting tool. |
| 05/24/1989 | CN1033019A Method of making heat exchanger and hollow shape for such |
| 05/23/1989 | US4831859 Extrusion tool for producing a drill bit blank |
| 05/17/1989 | EP0316122A2 Die assembly exchanging apparatus for extruder |
| 05/16/1989 | US4829950 Lightweight, high strength, wear resistant |
| 05/10/1989 | CN2037269U Non-cutting nobbing centre hole tool |
| 05/09/1989 | US4828937 Double-layer hollow extrudate; aluminum core, aluminum alloy cladding |
| 04/25/1989 | US4823586 Conform product thermomechanical treatment |
| 04/19/1989 | EP0311944A1 Improved casing for weft feeders |
| 04/13/1989 | DE3733362A1 Profiled flat wire, in particular for grid-like frameworks (stands, supports) and grid-like cages |
| 04/05/1989 | EP0310085A2 Process for manufacturing a tubular semifinished copper alloy part |
| 04/04/1989 | US4817259 Composite pipe, process for producing the same, and heat pipe using the same |
| 03/21/1989 | US4813823 Drilling tool formed of a core-and-casing assembly |
| 03/21/1989 | US4813130 Automatic extrusion pinning method and apparatus |
| 03/15/1989 | EP0306899A1 Method of making heat exchanger and hollow shape for such |
| 03/15/1989 | CN2034092U Nobbing dicing and forming device of lead wire |
| 03/08/1989 | EP0306380A1 Stepped tool for piercing a hole in a work piece by driving the tool axially into the work piece |
| 03/07/1989 | US4809531 Means and method for removing trapped billets from indirect extrusion press |
| 02/28/1989 | US4808246 Shape memory alloys; joining two parts with varying characteristics |
| 02/23/1989 | WO1989001369A1 Continuous extrusion apparatus |
| 02/15/1989 | CN2032514U Multi-purpose mechanical extruder |
| 02/14/1989 | US4803880 Hollow article forging process |
| 01/25/1989 | CN2031318U Edge rolling machine for closed radiator |
| 01/18/1989 | EP0299319A2 Method and tool for rounding off and compressing edges |
| 01/18/1989 | CN2030917U Static extrusion press |
| 01/17/1989 | CA1248740A1 Method for preparing tubular chills for continuous steel casting plants |
| 01/11/1989 | CN1030201A Fabrication technology of dual-hole conductive and water cooled copper bus bar |
| 01/03/1989 | US4794777 Continuous extrusion of metals |
| 12/28/1988 | EP0296178A1 Indirect extrusion process and machinery therefor. |
| 12/27/1988 | US4793404 Composite pipe, process for producing the same, and heat pipe using of the same |
| 12/21/1988 | EP0295613A2 Process for preparing hollow aluminum extrudates for use in vacuum |
| 12/20/1988 | US4792081 Extruded container with dissimilar metal welding insert |
| 12/06/1988 | CA1246010A1 Extrusion machinery |
| 11/29/1988 | US4787281 Method of dividing logs of heated metal into billets and apparatus for use in the method |
| 11/29/1988 | US4787234 Method and apparatus for extruding superalloy material |
| 11/29/1988 | CA1245599A1 Extrusion of metal |
| 11/22/1988 | US4785652 Indirect extrusion press with ram-mounted turret supporting tooling |
| 11/17/1988 | EP0290499A1 A horizontal extruding press |
| 11/02/1988 | EP0288780A2 Extrusion tool for making a drill blank with at least one internal helical flush bore |
| 11/01/1988 | US4781053 Indirect extrusion process and machinery therefor |
| 10/26/1988 | EP0287859A2 Method and apparatus for forming pins of an extrudable material in a substrate |
| 10/25/1988 | US4779440 Extrusion tool for producing hard-metal or ceramic drill blank |
| 10/18/1988 | US4777814 Method and apparatus for ejecting jammed billets from metal extrusion press |
| 10/04/1988 | US4774825 Zinc undercoation, then extrusion of protective aluminum |
| 08/16/1988 | US4763502 Method and a device for pretreating nonferrous metal for plastic deformation |
| 07/13/1988 | EP0274366A1 A die exchange device for horizontal axis extruding presses |
| 07/13/1988 | CN88100177A Extraplastic forming technology of standard mould |
| 06/22/1988 | EP0272186A1 Direct extrusion method at a vertical forging press, and equipment therefor |
| 06/22/1988 | CN86108242A Extrusion-processing technology for silver series electric contact materials |
| 06/14/1988 | US4750345 Recycling pressure plates and dies in extrusion presses |
| 06/07/1988 | US4749096 Tamper-evident container cover |
| 06/07/1988 | CA1237683A1 Composite pipe, process for producing the same, and heat pipe using the same |
| 05/19/1988 | DE3737628A1 Clutch cover |
| 05/18/1988 | CN87104784A Extruding technique of high strength wire-rope joints |
| 05/17/1988 | US4744236 Method of and apparatus for indirect extrusion |
| 05/05/1988 | WO1988003066A1 A horizontal extruding press |
| 04/27/1988 | EP0264417A1 Extrusion of metals |
| 04/19/1988 | US4738011 Method of manufacturing composite sliding material |
| 04/13/1988 | CN86106477A Titanium alloy calendering by double layer envelopments |
| 04/07/1988 | DE3636798A1 Method for the production of one-piece sintered cutting tools with a shank |
| 04/06/1988 | EP0262128A1 Method and apparatus for extrusion |
| 04/05/1988 | US4735070 Method and apparatus for lubricated forward extrusion with radial forward removal of outer shell |