TDK Electronics AG
540Patents
204Active
540Granted
52Portfolio score
Filing activity: May 30, 1972 → Apr 3, 2024
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4338576A | Ultrasonic atomizer unit utilizing shielded and grounded elements | Performing Operations; Transporting | 93 | Expired |
| US4474326A | Ultrasonic atomizing device | Mechanical Engineering; Lighting; Heating | 76 | Expired |
| US4412231A | Light recording medium | Emerging Cross-Sectional Technologies | 76 | Expired |
| US4003840A | Microwave absorber | Performing Operations; Transporting | 73 | Expired |
| USD266829S | Packaging container | General | 68 | Expired |
| US4327348A | Variable leakage transformer | Electricity | 53 | Expired |
| US4257989A | Humidifier | Emerging Cross-Sectional Technologies | 52 | Expired |
| US4079430A | Magnetic head | Electricity | 44 | Expired |
| US4424504A | Ferrite core | Electricity | 44 | Expired |
| US3989042A | Oscillator-exciting system for ultrasonic liquid nebulizer | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4419406A | Magnetic recording medium and production thereof | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4321302A | Process for producing magnetic powder having high coercive force | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4095587A | Healthy magnetic ornament | Human Necessities | 41 | Expired |
| US4415630A | Process of making magnetic recording medium | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4247398A | High gradient magnetic separation apparatus | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6954802B2 | Removable media recording station for the medical industry | Physics | 38 | Expired |
| US4118704A | Electromagnetic wave-absorbing wall | Emerging Cross-Sectional Technologies | 36 | Expired |
| USD254126S | Magnetic necklace | General | 36 | Expired |
| US4466582A | Tape guide for magnetic tape cartridge | Physics | 34 | Expired |
| US4146854A | High frequency attenuator using ferrite beads | Electricity | 34 | Expired |
| US4410139A | Liquid nebulizer | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4452863A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4335291A | Popped corn making apparatus used in a microwave oven | Human Necessities | 31 | Expired |
| US4282302A | Ferrite powder type magnetic toner used in electrophotography and process for producing the same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4314221A | Inductance device | Electricity | 30 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.