Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6299835 | Cadmium-free silver alloy as low-melting brazing filler material | Willi Malikowski, Dieter Kaufmann, Harald Krappitz | 2001-10-09 |
| 5985440 | Sintered silver-iron material for electrical contacts and process for producing it | Willi Malikowski, Roger Wolmer, Peter Braumann, Andreas Koffler | 1999-11-16 |
| 5841044 | Silver-iron material for electrical switching contacts (I) | Willi Malikowski, Roger Wolmer, Peter Braumann, Andreas Koffler | 1998-11-24 |
| 5808213 | Silver-iron material for electrical switching contacts (II) | Willi Malikowski, Roger Wolmer, Peter Braumann, Andreas Koffler | 1998-09-15 |
| 5798468 | Sintering material containing silver-tin oxide for electrical contacts and process for its manufacture | Roger Wolmer, Peter Braumann | 1998-08-25 |
| 5728194 | Silver-iron material for electrical switching contacts (III) | Willi Malikowski, Roger Wolmer, Peter Braumann, Andreas Koffler | 1998-03-17 |
| 5531962 | Cadmium-free silver alloy brazing solder, method of using said solder, and metal articles brazed with said solder | Alexander Voelcker, Dieter Kaufmann, Willi Malikowski, Joerg Beuers, Harald Krappitz | 1996-07-02 |
| 5400946 | Method for soldering hard substances onto steels | Harald Krappitz, Willi Malikowski | 1995-03-28 |
| 5341981 | Use of a cadmium-free silver alloy as brazing solder (III) | Alexander Voelcker, Dieter Kaufmann, Willi Malikowski, Joerg Beuers, Harald Krappitz | 1994-08-30 |
| 4980243 | Direct bonding of ceramic parts by a silver alloy solder | Willi Malikowski | 1990-12-25 |
| 4859238 | Silver-iron material for electrical contacts | Roger Wolmer, Peter Braumann | 1989-08-22 |
| 4797328 | Soft-solder alloy for bonding ceramic articles | Wolfgang Boehm, Juergen Hausselt, Willi Malikowsik | 1989-01-10 |
| 4749594 | Method for coating surfaces with hard substances | Willi Malikowski, Andreas Szulczyk, Wolfgang Boehm, Ulrich Muerrle | 1988-06-07 |