Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928507 | Methods and apparatus for manufacturing seamless tube | Karlhans Staat | 1990-05-29 |
| 4879924 | Gearing for driving the rolls of a roll train | Helmut Holthoff | 1989-11-14 |
| 4848185 | Transmission for driving the rolls of a rolling line | Helmut Holthoff | 1989-07-18 |
| 4827749 | Methods and apparatus for reducing seizing in transverse rolling of seamless tube blanks | Karlhans Staat | 1989-05-09 |
| 4798071 | Seamless tube production | Karlhans Staat | 1989-01-17 |
| 4768370 | Rolling line for the stretch-reducing of tubes | — | 1988-09-06 |
| 4571970 | Rolling mill plant for the manufacture of seamless tubes | Karl-Hans Staat | 1986-02-25 |
| 4501134 | Rolling mill plants | Karl-Hans Staat | 1985-02-26 |
| 4480457 | Plants for manufacturing seamless tubes | — | 1984-11-06 |
| 4430875 | Rolling mill for the stretch-reducing of tubes | Werner Demny, Hans-Dieter Gerhards | 1984-02-14 |
| 4388819 | Rolling mills | — | 1983-06-21 |
| 4323971 | Adjustment means for stretch reduction rolling mills | Wolfgang Siebenborn | 1982-04-06 |
| 4311033 | Rolling mill roll and method of rolling | Werner Demny | 1982-01-19 |
| 4196838 | Methods for the manufacture of longitudinal-seam welded tubes | — | 1980-04-08 |