ALNICO
| Date | Clue |
|---|---|
| 2017-12-30 | Magnet alloy |
| 2005-06-26 | Magnet alloy |
| 2005-04-28 | Alloy found in magnets |
| 2004-04-11 | Magnet alloy |
| 2001-01-28 | Magnet alloy |
| 2000-11-11 | Magnet material |
| 2000-05-17 | Magnet alloy |
| 1998-05-22 | Magnet alloy |
| 1998-01-01 | Magnetic alloy |
| 1997-07-13 | Permanent-magnet alloy |
| 1994-05-29 | Magnet alloy |