| 9833825 | Production method and production device for tube with spirally grooved inner surface | Jul 16, 15 | Dec 05, 17 | MITSUBISHI ALUMINUM CO., LTD. |
| 9676016 | Systems and methods for drawing materials | Sep 23, 13 | Jun 13, 17 | MANCHESTER COPPER PRODUCTS, LLC |
| 9669440 | Formed material manufacturing method and formed material | May 14, 14 | Jun 06, 17 | NISSHIN STEEL CO., LTD. |
| 9238258 | Method for producing double-wall tube with braided wires at its interface | Oct 17, 11 | Jan 19, 16 | NIPPON STEEL & SUMITOMO METAL CORPORATION |
| 9153348 | Double-walled tube with interface gap and production method therefor | May 02, 11 | Oct 06, 15 | NIPPON STEEL & SUMITOMO METAL CORPORATION |
| 9079232 | Linear drawing machine and method for linear drawing of a workpiece through a drawing ring | Jun 12, 13 | Jul 14, 15 | SMS GROUP GMBH |
| 8671727 | Methods for producing blank tube for cold drawing and for producing cold drawn tube | Jun 20, 12 | Mar 18, 14 | NIPPON STEEL & SUMITOMO METAL CORPORATION |
| 6779375 | Method and apparatus for producing tubes and hollow shafts | Mar 26, 03 | Aug 24, 04 | Not available |
| 5855136 | Process and device for threading elongated metal workpieces, especially tubes, into a drawing apparatus | Aug 14, 97 | Jan 05, 99 | Mannesmann AG |
| 5809823 | Method and apparatus for feeding a tubular workpiece into a drawing unit | Aug 26, 97 | Sep 22, 98 | Mannesmann AG |
| 5511440 | Method of manufacturing a hollow steering shaft and hollow steering shaft | Aug 10, 94 | Apr 30, 96 | NSK LTD. |
| 4998429 | Method for drawing tubular material | Apr 09, 90 | Mar 12, 91 | Furukawa Aluminum co., Ltd. |
| 4783981 | Apparatus for forming a tube from a metal band | Apr 16, 86 | Nov 15, 88 | Shahum S.A.R.L. |