Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10550479 | Method of thermally treating black plate coated with a conversion coating | Andrea Marmann, Tanja LOMMEL, Tatjana Kasdorf, Martin Schleich, Monika Malejczyk +1 more | 2020-02-04 |
| 10227671 | Method for producing a corrosion-resistant steel sheet | Helmut Oberhoffer, Anika Szesni, Manuel KÖHL, Dimitrios Nouskalis | 2019-03-12 |
| 9650692 | Method for producing packaging steel | Anika Szesni, Helmut Oberhoffer, Martin Schlupp, Dirk Matusch | 2017-05-16 |
| 9623473 | Method for producing a ring-pull top from a steel sheet provided with a protective layer and a ring-pull top produced thereby | Karl Ernst Friedrich, Dirk Matusch, Burkhard Kaup | 2017-04-18 |
| 9580646 | Method for treating a steel band or plate provided with a metal coating with an after-treatment agent, and a steel band or plate provided with a metal coating | Harold Baulig, Helmut Oberhoffer, Martin Schlupp | 2017-02-28 |
| 9115428 | Method for enhancing corrosion resistance of a metallic coating on a steel strip or plate | Winfried Hoehn, Helmut Oberhoffer, Benjamin LIEBSCHER | 2015-08-25 |
| 6554556 | Method for the manufacture of a ring part out of sheet metal for a lid of a can | Werner Erfgen | 2003-04-29 |
| 6333482 | Method for producing can bodies made of sheet metal for the manufacture of cans | Karl-Heinz Kern | 2001-12-25 |
| 6036043 | Easily-opened can lid | Werner Erfgen | 2000-03-14 |
| 5997232 | Method of making can bodies from sheet metal | — | 1999-12-07 |
| 5913651 | Method of manufacturing an easily-opened can lid, and easily-opened can lid | Werner Erfgen | 1999-06-22 |