TDK Corp
TDK CorpActive Patents
0
Total Holdings
23
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| JPS5522881A | Manufacturing method of semiconductor device | Expired / Lapsed | 1978-08-30 | — | 0 | Details |
| JP2551545B2 | Arc-shaped ferrite magnet, method of manufacturing the same… | Expired / Lapsed | 1992-01-31 | 1996-11-06 | 0 | Details |
| US5344456A | Materials for living hard tissue replacements | Expired / Lapsed | 1992-04-21 | 1994-09-06 | 44 | Details |
| US5213859A | Optical recording disk | Expired / Lapsed | 1991-06-25 | 1993-05-25 | 19 | Details |
| US4846838A | Prosthetic body for bone substitute and a method for the pr… | Expired / Lapsed | 1987-06-18 | 1989-07-11 | 10 | Details |
| US4596747A | Magnetic recording medium | Expired / Lapsed | 1984-07-16 | 1986-06-24 | 6 | Details |
| US4592948A | Magnetic recording medium | Expired / Lapsed | 1983-12-20 | 1986-06-03 | 15 | Details |
| US4548871A | Magnetic recording medium | Expired / Lapsed | 1983-12-16 | 1985-10-22 | 9 | Details |
| US4539433A | Electromagnetic shield | Expired / Lapsed | 1983-09-07 | 1985-09-03 | 11 | Details |
| US4511629A | Magnetic recording medium | Expired / Lapsed | 1983-02-03 | 1985-04-16 | 15 | Details |
| US4418126A | Magnetic recording medium | Expired / Lapsed | 1981-07-15 | 1983-11-29 | 3 | Details |
| USD266829S | Packaging container | Expired / Lapsed | 1978-04-10 | 1982-11-09 | 1 | Details |
| US4318062A | Ultrasonic wave nebulizer driving circuit | Expired / Lapsed | 1979-07-30 | 1982-03-02 | 4 | Details |
| US4296348A | Interdigitated electrode ultrasonic transducer | Expired / Lapsed | 1979-08-20 | 1981-10-20 | 8 | 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 |
| US4135219A | Demagnetizer for a magnetic head of a recording-reproducing… | Expired / Lapsed | 1977-07-20 | 1979-01-16 | 4 | Details |
| US4079430A | Magnetic head | Expired / Lapsed | 1976-02-10 | 1978-03-14 | 14 | Details |
| US4046983A | Microwave heating oven having seal means for preventing the… | Expired / Lapsed | 1976-06-14 | 1977-09-06 | 8 | Details |
| US3989042A | Oscillator-exciting system for ultrasonic liquid nebulizer | Expired / Lapsed | 1975-05-29 | 1976-11-02 | 8 | Details |
| US3805130A | Semiconductor device | Expired / Lapsed | 1973-07-03 | 1974-04-16 | 31 | Details |
| US3444323A | Automatic sound volume controlling system | Expired / Lapsed | 1965-10-18 | 1969-05-13 | 0 | Details |
| US3022078A | Magnetic record sheet for a magnetic recording and reading … | Expired / Lapsed | 1957-01-22 | 1962-02-20 | 0 | Details |