Class B21D : WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
Subclass 3/04: Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (straightening of well casings in situE21B) by rollers arranged on axes skew to the path of the work
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11826811 | Irregular tube straightener | Jul 07, 22 | Nov 28, 23 | Not available |
| 11541441 | Transport system for a wire or a sheet and method for delivering a wire or a sheet | Mar 26, 19 | Jan 03, 23 | SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBH |
| 11426782 | System for cleaning, protecting and lubricating hyperbolic rollers and bearings placed in a rotating rotor which is used for straightening wire, rod or reinforcing bar, using air and oil | Dec 27, 17 | Aug 30, 22 | Not available |
| 11123782 | Versatile tubing straightener | Jan 06, 20 | Sep 21, 21 | Precision Husky Corporation |
| 10987711 | Roll straightening machine and method for producing an elongated string member | Jan 27, 15 | Apr 27, 21 | SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBH |
| 10488038 | Method for producing a heat transfer tube for steam generator using drawing, solution heat treatment, and straightening | Jun 25, 18 | Nov 26, 19 | 501 Nippon Steel Corporation |
| 10184160 | Dual phase stainless steel pipe and manufacturing method thereof | Aug 22, 13 | Jan 22, 19 | Nippon Steel & Sumitomo Metal Corporation |
| 9751121 | Pipe straightening apparatus and a method of straightening a pipe | May 09, 12 | Sep 05, 17 | Not available |
| 8863564 | Lubricant composition for hot metal working and method of hot metal working using the same | Mar 29, 07 | Oct 21, 14 | NIPPON STEEL & SUMITOMO METAL CORPORATION |
| 8783085 | Method for straightening tube and straightening roll | Aug 20, 12 | Jul 22, 14 | NIPPON STEEL & SUMITOMO METAL CORPORATION |
| 7617710 | Roller leveller with variable center distance | Mar 01, 05 | Nov 17, 09 | ARCELORMITTAL FRANCE |
| 6422052 | Device for forming cutting blade for prints | Jul 06, 01 | Jul 23, 02 | YWDS KOREA CO., LTD. |
| 5676010 | Wire straightening device | Sep 20, 96 | Oct 14, 97 | TYCO ELECTRONICS SERVICES GMBH, THE WHITAKER CORPORATION, |
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