Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422065 | Silver-based contact material for use in power-engineering switchgear, and a method of manufacturing contacts made of this material | Franz Hauner | 1995-06-06 |
| 5246480 | Sintered contact material based on silver for use in power engineering switch-gear, in particular for contact pieces in low-voltage switches | Joachim Grosse, Bernhard Rothkegel | 1993-09-21 |
| 4980125 | Sinter contact material for low voltage switching apparatus of the energy technology, in particular for motor contactors | Ralf Krause, Bernhard Rothkegel | 1990-12-25 |
| 4948424 | Low voltage switching apparatus sinter contact material | Bernard Rothkegel, deceased | 1990-08-14 |
| 4855104 | Method for the production of sintered electrical contact material for low voltage power switching | Bernhard Rothkegel | 1989-08-08 |
| 4764227 | Sintered electrical contact material for low voltage power switching | Bernhard Rothkegel | 1988-08-16 |
| 4565590 | Silver and metal oxides electrical contact material and method for making electrical contacts | Joachim Grosse, Guenter Tiefel | 1986-01-21 |