| Patents for B21C 37 - Manufacture of metal sheets, rods, wire, tubes, profilesor like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape (9,784) |
|---|
| 05/24/1994 | US5314108 Surface of steel strip is coated with nickel, cobalt or alloy, formed into tube, inserting film-forming tin or alloy, heat treating |
| 05/17/1994 | US5312495 Process for producing high strength alloy wire |
| 05/17/1994 | US5312198 Jack extension tube |
| 05/17/1994 | US5311661 Method of pointing and corrugating heat exchange tubing |
| 05/11/1994 | EP0595877A1 Process of producing superconducting alloys |
| 05/11/1994 | EP0566733A4 Method and apparatus for production of continuous metal strip |
| 05/11/1994 | CN1086469A Continuously shaped pipe with changed diameters |
| 05/04/1994 | CN1086283A Energy absorbing pole |
| 05/04/1994 | CN1024397C Method and apparatus for making clad core wire |
| 04/21/1994 | DE4334203A1 Tool forming rim holes in heat exchanger headers - has die axially insertable into header consisting of axially spaced support sections and coupling sections |
| 04/20/1994 | EP0593241A1 Method of bending metallic pipe |
| 04/19/1994 | US5304262 Controlled hardness, resistance to corrosion and wear |
| 04/19/1994 | US5303570 Hydrostatically deforming a hollow body |
| 04/14/1994 | WO1994007620A1 Improvements in and relating to machines for forming helically wound lock-seam tubing having multiple wall thickness |
| 04/14/1994 | WO1994007619A1 Hollow bars and method of manufacture |
| 04/14/1994 | CA2145522A1 Hollow bars and method of manufacture |
| 04/14/1994 | CA2125295A1 Improvements in and relating to machines for forming helically wound lock-seam tubing having multiple wall thickness |
| 04/13/1994 | EP0591693A1 System for grooving and rolling linear member and flat heat exchanger tube resulting therefrom |
| 04/12/1994 | US5301869 Machine for manufacturing welded steel pipes and method for handling the machine |
| 04/05/1994 | CA1328152C Enzyme hydrolyzed maltodextrin containing finisher/preserver/cleaner composition for lithographic printing plates |
| 03/31/1994 | WO1994007071A1 Manufacture of helically corrugated conduit |
| 03/31/1994 | DE4331454A1 Process for forming recesses in metal body |
| 03/30/1994 | EP0589470A1 Methods for manufacturing tubes filled with powdery and granular substances |
| 03/30/1994 | EP0589104A1 Method of producing tubing |
| 03/30/1994 | EP0589099A1 Method of forming round tubes into profiled tubes with polygonal or other non-circular sections |
| 03/29/1994 | US5298337 Perforated plates for cryogenic regenerators and method of fabrication |
| 03/29/1994 | US5297587 Sealed double wall steel tubing having steel outer surface |
| 03/29/1994 | US5297410 Method of manufacturing a multiple-walled tube |
| 03/22/1994 | US5295302 Coating an aluminum sheet with brazing material, forming tubes and assembly into heat exchangers |
| 03/17/1994 | DE4230865A1 Reinforced large dia. thin wall tube mfr. - by longitudinal or spiral seam welding simultaneously with stiffening rib welding |
| 03/16/1994 | CN1023978C Method for making thin-wall, square Zr-alloy pipe |
| 03/15/1994 | US5293766 Method for making slender seamless steel mold |
| 03/03/1994 | WO1994004766A1 Framework with hollow members, process for producing the same and its use |
| 03/03/1994 | DE4228372A1 Three-way pipe connection using two pipes - is formed by sending pressure mandrel down to first pipe bend to produce neck opening for fixing on second pipe. |
| 03/03/1994 | CA2143302A1 Framework with hollow members, process for producing the same and its use |
| 02/24/1994 | DE4227092A1 Cutter for production of slotted filter pipes for bore wells - consists of shear cutter or punch with guide outside and cutter plate inside pipe |
| 02/23/1994 | EP0583461A1 Apparatus for cutting helically wound metal tubing. |
| 02/22/1994 | US5287621 Cylinder liner manufacturing process |
| 02/17/1994 | DE4226402A1 Metal plate bending machine - produces thick-walled pipes by repeated passes of narrow rolling wheel over plate supported on two spaced-apart bars |
| 02/15/1994 | US5286577 Co-drawn composite of conductor core and matrix; high purity aluminum; aluminum iron cerium alloy matrix |
| 02/09/1994 | EP0582562A1 Device for continuous forming of a metallic tube |
| 02/03/1994 | WO1994002281A1 Combined cutting and welding method and relative apparatus for manufacturing structural sheet metal products |
| 02/01/1994 | US5282313 Method for producing heat exchange elements and heat exchange elements produced thereby |
| 01/27/1994 | DE4224131A1 Method of producing connection socket on pressure hose - involves placing disc in hole drilled in side of tube, making flat surface on top of deformed disc and then making thread |
| 01/20/1994 | DE4223247A1 Producing small tubing from strip - using punching and cutting station, followed by U-forming of strip and O-forming of strip with final laser welding |
| 01/19/1994 | CN1080883A A method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs |
| 01/13/1994 | DE4221957C1 Prodn. of thick-walled metal high-pressure pipes with smooth interiors - by alternating cold deformation and thermal treatment stages plus application of ductile non-ferrous metal or alloy to pipe interior |
| 01/12/1994 | EP0578268A1 Cross bar connector |
| 01/11/1994 | US5276966 Enhanced stored chemical energy powered boiler |
| 01/05/1994 | EP0577239A1 A method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs |
| 01/05/1994 | EP0577150A1 Metal window bar profile and its fabrication process |
| 01/05/1994 | EP0576733A1 Multilayered metal pipe and process for producing it |
| 01/05/1994 | DE4220418C1 Cylinder profile with non-round shape - is made by casting material held between walls inside shaped mould |
| 12/29/1993 | EP0575728A1 Method for the continuous manufacture of metal-plated steel tubes by molten metal plating treatment |
| 12/28/1993 | CA1325616C Method of manufacturing profile pipes used in well construction, and apparatus for performing this method |
| 12/22/1993 | CN1079680A method for manufacturing square pipe with sharp corners |
| 12/21/1993 | US5271151 Method of making a high pressure condenser |
| 12/15/1993 | EP0574194A1 Method for producing heat treated composite nuclear fuel containers |
| 12/14/1993 | CA1325102C Method of producing superconducting wire |
| 12/09/1993 | WO1993024944A1 Extruded capacitor electrode and method of making the same |
| 12/09/1993 | DE4218363A1 Installation for dealing with superfluous filamentous material - with a cutting section provided with displaceable structure holding clamping rolls |
| 12/08/1993 | CN1079333A Extruded capacitor electrode and method of making same |
| 12/01/1993 | EP0572105A1 Method for forming tube-shaped rack bar and device therefor |
| 11/25/1993 | WO1993023183A1 Method of manufacturing tubular member having integral exterior protrusions |
| 11/18/1993 | DE4215807A1 Pipe bending press - has lower piston cylinder units between table and lower beam in a closed frame structure |
| 11/10/1993 | EP0569307A1 Device for forming helical fins on the external wall of tubes |
| 11/10/1993 | CN1078180A Apparatus for cutting helically wound metal tubing |
| 11/09/1993 | US5259547 Method of manufacturing bi-metallic tubing |
| 11/09/1993 | US5259448 Heat transfer tubes and method for manufacturing |
| 11/02/1993 | US5257716 For transferring a metallic tubular product |
| 11/02/1993 | US5257521 Apparatus and method for cutting spiral pipe |
| 10/27/1993 | EP0567399A1 Heat exchanger tube with integrated perturbation device |
| 10/27/1993 | EP0566733A1 Method and apparatus for production of continuous metal strip. |
| 10/26/1993 | US5255535 Refrigerator with spine fin evaporator |
| 10/19/1993 | CA1323159C Apparatus for forming plastics coated tube |
| 10/14/1993 | WO1993020382A1 Metal pipe and process for producing the same |
| 10/14/1993 | WO1993019863A1 Device for flaring out pipes |
| 10/14/1993 | DE4212049A1 Method for temporary storage of flexible metal strip - uses deflector device, to move strip successively from upright into horizontal position |
| 10/13/1993 | EP0565114A1 Method for obtaining a valve body and valve body obtained through said method |
| 10/12/1993 | US5252550 Method of producing a composite oxide superconductive wire |
| 10/12/1993 | US5251804 Method for the continuous manufacture of metal-plated steel tubes by molten plating treatment |
| 10/08/1993 | CA2093487A1 Process and apparatus for the temporary storage of flexible metal strip |
| 10/05/1993 | US5249731 Process for producing aluminum coated metallic material |
| 10/05/1993 | US5249730 Rolling-soldering plate of metal |
| 09/29/1993 | CN1022221C Fabrication technology of dual-hole conductive and water cooled copper bus bar |
| 09/28/1993 | CA1322493C Apparatus for forming and cutting spiral pipe |
| 09/22/1993 | CN1076388A Inequal wall seamless metal tube and its machining method |
| 09/21/1993 | US5246064 Condenser for use in a car cooling system |
| 09/21/1993 | US5245849 Apparatus for forming a pipe from a sheet metal plate |
| 09/16/1993 | WO1993017825A1 A device for cladding tubes by means of an explosive process |
| 09/16/1993 | WO1993017805A1 Combined cutting and welding process for manufacturing structural products, apparatus implementing such a process, and products manufactured thereby |
| 09/16/1993 | WO1993017803A1 Apparatus for cutting helically wound metal tubing |
| 09/15/1993 | CN1076145A Technique for continuously welding and rolling special tube with single multi-roller frame |
| 09/14/1993 | US5245514 Extruded capacitor electrode and method of making the same |
| 09/14/1993 | US5243842 Method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs |
| 09/08/1993 | EP0559588A1 Process for making zirconium base tubes formed from layers of different composition |
| 09/07/1993 | US5241840 Refrigerator with spine fin evaporator |
| 09/07/1993 | US5241838 Refrigerator with spine fin evaporator |
| 09/02/1993 | WO1993016896A1 High strength automotive seat frame and method |
| 09/02/1993 | DE4206397A1 Method for stretch-reducing of steel rolling mill loops - is used in multi-stand mill, each succeeding stand moves at higher speed than previous one |