Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7767074 | Method of etching copper on cards | Gust Bierings, Göran Frennesson, Jenny Sjöberg | 2010-08-03 |
| 6905628 | Method in etching of a substrate | Per Petersson | 2005-06-14 |
| 6656341 | Method of etching, as well as frame element, mask and prefabricated substrate element for use in such etching | Per Petersson, Mikael Gustavsson, Jenny Sjöberg, Bin Xie, Gust Bierings +1 more | 2003-12-02 |