Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754280 | Silver/carbon-based material and method for producing the same for contact material | Bernd Kempf, Carsten Boehme, Werner Roth, Andreas Koffler | 2010-07-13 |
| 7566437 | Process for manufacture of silver-based composite powders for electrical contact materials and composite powders so produced | Dan V. Goia, Bernd Kempf, Inge Fallheier, Andreas Koffler | 2009-07-28 |
| 6409794 | Method for producing composite powders based on silver-tin oxide, the composite powders so produced, and the use of such powders to produce electrical contact materials by powder metallurgy techniques | Mechthild Mueller, Frank Heringhaus, Dietrich Ruehlicke, Dan V. Goia | 2002-06-25 |
| 5985440 | Sintered silver-iron material for electrical contacts and process for producing it | Wolfgang Weise, Willi Malikowski, Peter Braumann, Andreas Koffler | 1999-11-16 |
| 5841044 | Silver-iron material for electrical switching contacts (I) | Wolfgang Weise, Willi Malikowski, Peter Braumann, Andreas Koffler | 1998-11-24 |
| 5808213 | Silver-iron material for electrical switching contacts (II) | Wolfgang Weise, Willi Malikowski, Peter Braumann, Andreas Koffler | 1998-09-15 |
| 5798468 | Sintering material containing silver-tin oxide for electrical contacts and process for its manufacture | Wolfgang Weise, Peter Braumann | 1998-08-25 |
| 5728194 | Silver-iron material for electrical switching contacts (III) | Wolfgang Weise, Willi Malikowski, Peter Braumann, Andreas Koffler | 1998-03-17 |
| 4859238 | Silver-iron material for electrical contacts | Wolfgang Weise, Peter Braumann | 1989-08-22 |
| 4410491 | Material for electrical contacts | Bohm Wolfgang, Willi Malikowski | 1983-10-18 |
| 4341556 | Material for electrical contacts | Wolfgang Bohm, Andreas Szulczyk, Willi Malikowski | 1982-07-27 |