| Patents for B21C 23 - Extruding metal; Impact extrusion (6,435) |
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| 06/26/1991 | CN1052577A Spark plug electrodes and process for making thereof |
| 06/20/1991 | DE3941649A1 Verfahren zur herstellung von elektroden fuer zuendkerzen sowie zuendkerzen-elektroden Process for the manufacture of electrodes for spark plugs and spark plug |
| 06/12/1991 | EP0431681A2 Method and extrusion tool for making a blank with internal bores |
| 06/12/1991 | CN1052066A Extrusion molding of jack cylinder |
| 06/05/1991 | EP0430409A2 Handling system for curved extrusions |
| 05/29/1991 | EP0428989A2 Apparatus for loading billets and eventually pressing discs in horizontal metal extrusion presses |
| 05/29/1991 | CN2077763U 液压成型机 Hydraulic machine |
| 05/15/1991 | EP0427083A2 Horizontal metal-extrusion press |
| 05/14/1991 | US5015439 Extrusion of metals |
| 05/14/1991 | US5015438 Extrusion of metals |
| 05/08/1991 | EP0426312A2 Cold-forming dies and cold-forming process |
| 05/06/1991 | CA2013737A1 Handling system for curved extrusions |
| 05/01/1991 | WO1991006619A1 Non-staining solid lubricants |
| 05/01/1991 | CA2071830A1 Non-staining solid lubricants |
| 04/30/1991 | US5010637 Method and apparatus for coating a core material with metal |
| 04/30/1991 | CA2018372A1 Cold forming dies and cold forming process |
| 04/24/1991 | CN2075559U Single moving direct type seamless tube extruding machine |
| 04/18/1991 | WO1991004809A1 Method for making elongate articles of small cross-sectional area by hot gas extrusion |
| 04/17/1991 | CN1050691A One-pass shaping method of curved aluminium profile |
| 04/16/1991 | US5007274 Billet pre-piercer apparatus and method |
| 04/10/1991 | CN2074686U Plastics extruding shaping mould for multi-way pipe joint |
| 04/10/1991 | CN1050507A Special steel tubes rolling and extruding equipment |
| 04/10/1991 | CN1050506A One step shaping seamless three-way, four-way pipe producing method by hot extruding and shaping apparatus |
| 04/09/1991 | US5005756 Method of producing bimetallic tubes and the tubes obtained by this method |
| 04/04/1991 | WO1991004110A1 Metal extrusion |
| 03/27/1991 | CN1012209B Connecting method of composite pipe |
| 03/21/1991 | WO1991004117A2 Billet pre-piercer apparatus and method |
| 03/21/1991 | WO1991003356A1 Process and device for making solder rods with a copper content |
| 03/21/1991 | DE3929287A1 Verfahren und vorrichtung zum herstellen von loetstaeben mit einem kupferanteil Method and apparatus for the manufacture of soldering rods with a copper content |
| 03/19/1991 | US5000025 Extrusion machinery |
| 03/13/1991 | EP0416107A1 Device for making elongated articles of small cross-section by means of hot gas extrusion |
| 03/06/1991 | CN2072449U Extruded three-way general die set |
| 02/27/1991 | EP0414620A1 Method for making magnesium alloys by spray coating |
| 02/27/1991 | CN1049463A Steel-collar blank machining method |
| 02/26/1991 | US4995548 Preparation process for coextrusion billets with multiple metallic cylindrical layers |
| 02/25/1991 | CA2023900A1 Preparation of magnesium alloys by a spray deposition process |
| 02/13/1991 | CN2071096U Medium and small t shape tube mould |
| 02/12/1991 | US4992238 Performing deformation in two different temperature ranges |
| 02/12/1991 | US4991421 Method for extruding an elongated, lightweight rack |
| 02/12/1991 | CA1280106C Method of manufacture of manifolds and manifold provided by such method |
| 02/06/1991 | EP0411746A1 Continuous extrusion apparatus |
| 02/05/1991 | US4989437 Method and apparatus for extruding metal |
| 01/16/1991 | EP0408259A1 Continuous extrusion apparatus |
| 01/16/1991 | CN1011205B Process and device for making ribbon electric contact from composite |
| 01/11/1991 | WO1991000783A1 Continuous extrusion apparatus |
| 01/11/1991 | CA2035869A1 Continuous extrusion apparatus |
| 01/08/1991 | US4982592 Method of extruding channeled sleeves |
| 12/26/1990 | CN1047990A Cold-press molding |
| 12/25/1990 | US4980122 Method for production of superplastic composite material having aluminum metal substance reinforced with silicon nitride |
| 12/12/1990 | CN2067195U Hot extrusion bend machine |
| 12/11/1990 | US4977034 Process for coextrusion billets with multiple metallic cylindrical layers by hot isostatic pressing and product |
| 12/05/1990 | EP0401185A1 Method for manufacturing a compound pipe |
| 11/29/1990 | WO1990014177A1 Die for hot extrusion |
| 11/29/1990 | WO1990014176A1 Continuous extrusion apparatus |
| 11/28/1990 | EP0296178A4 Indirect extrusion process and machinery therefor |
| 11/22/1990 | EP0398747A1 Continuous extrusion apparatus |
| 11/14/1990 | EP0397473A1 Method of extrusion, and extrusion press |
| 11/06/1990 | US4967583 Method of manufacturing extruded seamless hollow materials |
| 11/06/1990 | US4967473 Method of forming a bow beam for a truck trailer |
| 10/31/1990 | CN1046478A Horizontal friction extruder |
| 10/30/1990 | US4966023 Staged tool for boring a hole in an element by axial penetration of the tool |
| 10/17/1990 | CN1046106A Frictional extruding machine |
| 10/10/1990 | EP0391855A1 Extruded composite can |
| 10/04/1990 | WO1990011146A1 Device for making elongated articles of small cross-section by means of hot gas extrusion |
| 09/26/1990 | CN2062658U Extruder for forming steps on outer surface of metal pipe |
| 09/18/1990 | US4958060 Clad metal electrode |
| 09/13/1990 | DE3906583A1 Friction extruders |
| 09/05/1990 | EP0385513A1 Method for coating a core material with metal |
| 09/04/1990 | US4953382 Extrusion of strip material |
| 08/16/1990 | EP0382265A2 Method and apparatus for coating a core material with metal |
| 08/16/1990 | DE3903962A1 Process for the continuous production of profile wires from strand-type semi-finished metallic products |
| 08/07/1990 | US4945749 Cold forming dies and cold forming process |
| 08/01/1990 | EP0380445A1 Composite current rail of aluminium and steel, especially for a high-power railway current rail |
| 08/01/1990 | EP0379937A2 Horizontal extrusion press |
| 08/01/1990 | CN2059858U Regulator and frame of continuous casting and extruding machine for rolled al section |
| 07/11/1990 | EP0377390A1 Method of making bimetallic tubes, and tubes made by this method |
| 06/28/1990 | WO1990006823A1 Extrusion apparatus |
| 06/27/1990 | EP0316344A4 Indirect extrusion press with ram-mounted turret supporting tool. |
| 06/27/1990 | CN2058630U Axial-fixed elastic die device for thin walled tube |
| 06/13/1990 | EP0372999A2 Process for manufacturing clad metal tubing |
| 06/12/1990 | US4933141 Method for making a clad metal product |
| 05/31/1990 | DE3939217A1 Prodn. of profiled rod - using extruder followed by rolling stand with 2 sets of rolls at 90 deg. to each other and device to maintain constant min. tensile stress |
| 05/30/1990 | CN1008147B Titanium alloy calendering by double layer envelopments |
| 05/15/1990 | US4925741 Getter wire |
| 05/09/1990 | EP0367716A1 Method of continuously making an extruded profile |
| 05/08/1990 | US4923671 Method of producing powder-metallurgical objects, specifically elongate objects such as rods, sections, tubes or the like |
| 04/25/1990 | CN2056365U Pb tube extruding die |
| 04/25/1990 | CN1041548A Technology for thermoset extrusion of a bicycle free wheel |
| 04/18/1990 | EP0363667A2 Continuous extruder for recovering the scraps originating from the machining of aluminum and its alloys, with production of extruded semifinished articles |
| 04/11/1990 | CN1007496B Complex pipe, its mfr. method and heat pipe using the pipe |
| 03/20/1990 | US4909720 For the production of a drill blank |
| 03/07/1990 | EP0356718A2 Method for shaping by extrusion and modifying the mechanical properties of semi-finished products made from metallic-powder alloys having an increased heat resistance |
| 03/07/1990 | CN1040258A Connecting method of composite pipe |
| 02/28/1990 | EP0356118A2 Old extrusion process for internal helical gear teeth |
| 02/20/1990 | US4901771 Casing for weft storage and feeding device |
| 02/20/1990 | US4901415 Method for connecting composite pipes |
| 02/14/1990 | EP0354682A2 Cold extrusion process for internal gear teeth |
| 02/14/1990 | CN1039545A Method and mechanical tool for continuously pushing sharp bends |
| 02/14/1990 | CN1039544A Technology and dies for shaping blank of cross axle |
| 01/31/1990 | CN1006607B Extraplastic forming technology of standard mould |