Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6194369 | Pickling/activation solution for the pretreatment of aluminum-steel composites prior to dip tinning | Jan Eberhardt, Dieter Guhl | 2001-02-27 |
| 6183617 | Self-regulating, acidic electrolytes for dip-tin-plating aluminum alloys | Dieter Guhl | 2001-02-06 |
| 6103088 | Process for preparing bismuth compounds | Dieter Guhl | 2000-08-15 |
| 5116468 | Method for the preparation of finely divided, electrically conductive tin(IV) oxide | Joachim Giersberg, Dirk Naumann | 1992-05-26 |