TDK Corp
TDK CorpActive Patents
0
Total Holdings
5
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5344456A | Materials for living hard tissue replacements | Expired / Lapsed | 1992-04-21 | 1994-09-06 | 44 | Details |
| US4596747A | Magnetic recording medium | Expired / Lapsed | 1984-07-16 | 1986-06-24 | 6 | Details |
| US4241139A | Magnetic recording medium | Expired / Lapsed | 1979-04-05 | 1980-12-23 | 6 | Details |
| US4222084A | Magnetic head | Expired / Lapsed | 1978-06-14 | 1980-09-09 | 12 | Details |
| US3444323A | Automatic sound volume controlling system | Expired / Lapsed | 1965-10-18 | 1969-05-13 | 0 | Details |