Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10362638 | Process for producing a metal plate having an embedded heating element and metal plate produced thereby | Norbert Hoffstaedter | 2019-07-23 |
| 8651364 | Composite metal object and method for producing a composite object | Norbert Hoffstaedter | 2014-02-18 |
| 7335428 | Cooking vessel comprising a base made of a multilayer material and a side wall, and article of multilayer material | Herve Fraisse, Yves Grosbety, Thierry Waeckerle, Norbert Hoffstaedter | 2008-02-26 |
| 5952112 | Multilayer, cold deformable composite metal article capable of being deep drawn | — | 1999-09-14 |
| 4380992 | Burner, especially for a flambe portable stove or the like | — | 1983-04-26 |