| Patents for B23K 13 - Welding by high-frequency current heating (1,807) |
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| 07/10/1996 | EP0720908A1 Multipass induction heating for thermoplastic welding |
| 06/26/1996 | EP0717667A1 Heat exchanger tubing production plant |
| 06/05/1996 | EP0705155A4 Method of forming seamed metal tube |
| 05/15/1996 | EP0711218A1 An apparatus for fusing two workpieces produced from sheet metal |
| 05/15/1996 | DE19541864A1 Ultrasonic welding equipment |
| 05/08/1996 | EP0495993B1 Method and device for joining billets |
| 04/17/1996 | CN2224695Y Multifunctional high-frequency rotating welding screen board machine |
| 04/10/1996 | EP0705155A1 Method of forming seamed metal tube |
| 04/10/1996 | CN1120321A Method of and apparatus for joining metal pieces |
| 04/02/1996 | CA2074435C High frequency electronic welding system |
| 03/26/1996 | US5501053 Interengageable structural members |
| 03/07/1996 | WO1996006707A1 Manufacture of internally enhanced welded tubing |
| 02/27/1996 | US5494209 Method for the manufacture of an internally enhanced welded tubing |
| 02/15/1996 | WO1996004099A1 Workpiece welding process and device |
| 02/08/1996 | WO1996003249A1 Method of manufacturing laser welded pipes and apparatus for manufacturing the same |
| 02/08/1996 | CA2170055A1 Method of manufacturing laser welded pipes and apparatus for manufacturing the same |
| 01/23/1996 | US5486684 Multipass induction heating for thermoplastic welding |
| 01/16/1996 | US5484096 Method of bonding two bodies together by brazing |
| 01/16/1996 | CA2089028C Process of making seamless metal tube |
| 01/11/1996 | WO1996000628A1 A method for heating closely spaced end portions of two pipes |
| 01/10/1996 | EP0691163A1 Method of and apparatus for joining metal pieces |
| 01/02/1996 | US5481091 Thermoplastic welding |
| 12/27/1995 | EP0689023A1 Thin heat exchanger, and method for manufacturing the same |
| 12/12/1995 | US5474227 Method of forming seamed metal tube |
| 11/22/1995 | CN1112358A Method for continuous hot rolling of metal pieces, and apparatus and parts therefor |
| 11/09/1995 | WO1995029786A1 Method of forming seamed metal tube |
| 11/08/1995 | EP0495989B1 Method of joining billets during hot rolling and method of continuous hot rolling |
| 11/02/1995 | DE4426894A1 Method and appts. for welding workpieces |
| 10/18/1995 | EP0677340A1 Method for the manufacture of internally enhanced welded tubing |
| 10/12/1995 | DE4406220A1 Method of joining together metals and ceramics |
| 09/06/1995 | EP0670194A1 Welding management apparatus |
| 09/05/1995 | CA2076169C Method of continuously hot-rolling sheet bars |
| 08/30/1995 | CN1029596C Method for joining steel plates and apparatus therefor |
| 08/09/1995 | EP0666341A1 Process for manufacturing clad pipe |
| 07/11/1995 | US5431748 Impact bar for automobile |
| 07/05/1995 | EP0661112A1 Method for continuous hot rolling of metal pieces, and apparatus and parts therefor |
| 06/22/1995 | WO1995016525A1 Method of and apparatus for joining metal pieces |
| 06/21/1995 | EP0658395A1 Method, apparatus for edge sheet welding |
| 06/07/1995 | CN2199838Y Dual-purpose welding device for conductive contact and soft connecting |
| 06/01/1995 | DE4428565A1 Method and appts. for inductive welding of sheet metal components |
| 04/25/1995 | CA2074137C Seam welding machine for joining sheet blanks together |
| 04/04/1995 | US5403986 Structural member and method of making by cold rolling followed by induction or resistance welding |
| 03/22/1995 | CN1100356A Repairing method for tools and dies and repairing machine |
| 03/16/1995 | WO1995007156A1 Heat exchanger tubing production plant |
| 03/16/1995 | CA2171461A1 Plant for producing heat exchanger tubes |
| 03/07/1995 | US5396050 Method of joining steel sheet bars and a joining apparatus |
| 02/01/1995 | EP0636445A1 Brazing |
| 01/08/1995 | CA2126645A1 Brazing |
| 01/05/1995 | WO1995000286A1 Method of forming seamed metal tube |
| 01/05/1995 | WO1995000255A1 Continuous tube forming and coating |
| 01/05/1995 | CA2165809A1 Continuous tube forming and coating |
| 12/27/1994 | US5376766 Weld quality monitoring and control system for a tube mill |
| 12/22/1994 | WO1994029068A1 An apparatus for using two workpieces produced from sheet metal |
| 12/22/1994 | WO1994029040A1 Method for continuous hot rolling of metal pieces, and apparatus and parts therefor |
| 12/22/1994 | CA2399336A1 Continuous hot rolling method |
| 12/22/1994 | CA2399334A1 Continuous hot rolling method |
| 12/22/1994 | CA2164977A1 An apparatus for fusing two workpieces produced from sheet metal |
| 12/01/1994 | DE4318931C1 Method for the production of welded tubes |
| 11/01/1994 | US5360156 Welding management apparatus |
| 09/20/1994 | US5348213 Method for the manufacture of internally enhanced welded tubing |
| 09/15/1994 | WO1994013457A3 Joint, method of forming a joint and method of forming joint components |
| 09/07/1994 | EP0613751A1 Arrangement for induction welding of tubes |
| 09/06/1994 | US5344062 Method of forming seamed metal tube |
| 08/24/1994 | CN1091067A High frequency inductive spot welding gun |
| 08/02/1994 | CA2011131C Arrangement for continuous induction welding |
| 07/12/1994 | US5329101 Induction heating apparatus with hinged support and filtered air cooling |
| 07/12/1994 | US5329099 Method of maintaining housing of reactor pressure vessel and heat treatment equipment therefor |
| 06/28/1994 | US5323951 Method of joining steel sheet bars in hot rolling and a continuous hot rolling method |
| 06/23/1994 | WO1994013457A2 Joint, method of forming a joint and method of forming joint components |
| 06/07/1994 | US5319179 Method and apparatus for welding workpieces made of superalloys |
| 05/17/1994 | US5313034 Thermoplastic welding |
| 04/27/1994 | EP0593826A1 Retro-reflective assembly |
| 04/19/1994 | US5304768 For use with a tube production machine |
| 04/13/1994 | EP0591693A1 System for grooving and rolling linear member and flat heat exchanger tube resulting therefrom |
| 03/01/1994 | US5290990 Seam welding machine for joining sheet blanks together |
| 02/15/1994 | US5286309 Electric-resistance-welded steel pipe with high strength |
| 01/12/1994 | CN1080579A High-frequency can welding method and copper wire recovering device |
| 12/01/1993 | CN1022896C Plain connector for connecting moving steel plate |
| 11/30/1993 | US5265787 Welding management apparatus |
| 11/24/1993 | EP0570801A1 Process of making seamless metal tube |
| 11/16/1993 | US5262123 Friction extrusion, metal working |
| 10/27/1993 | EP0566834A2 Tube production machine |
| 08/31/1993 | US5240542 Joining of composite materials by induction heating |
| 08/31/1993 | US5240167 Friction welding method with induction heat treating |
| 08/24/1993 | US5238177 Method and apparatus for forming conveyor belt hinge pins |
| 07/20/1993 | US5228485 Flexible tubing occlusion sensor |
| 07/14/1993 | EP0550578A1 Interengageable structural members. |
| 07/14/1993 | EP0550564A1 Multiple component structural member |
| 06/29/1993 | US5223683 High frequency electronic welding system |
| 06/24/1993 | DE4141867A1 Method for mfr. of hollow profile out of metal strip - utilises strip bent back on itself to form joint edges for high-frequency welding |
| 06/08/1993 | US5217155 Method of continuously hot-rolling sheet bars |
| 05/26/1993 | EP0543437A1 Apparatus for induction butt welding of metallic tubes |
| 05/19/1993 | CN1020684C Apparatus for rounding and conveying onwards sheet-metal blanks for can bodies |
| 05/06/1993 | DE4136356A1 Internally threaded parts prodn. - using outer threaded part as pattern to produce thimble-like mould around which melt is cast in induction casting process |
| 04/21/1993 | EP0537565A2 Induction heating circuit |
| 03/24/1993 | EP0532853A1 Apparatus for seam welding metal plates |
| 02/24/1993 | EP0528385A1 Method of continuously hot-rolling sheet bars |
| 02/03/1993 | EP0525621A2 High frequency electronic welding system |
| 01/19/1993 | US5180204 High strength steel pipe for reinforcing door of car |
| 12/22/1992 | US5172846 Butting device for joining running steel sheets |