SUMIDA CORPORATION
231Patents
199Active
231Granted
57Portfolio score
Filing activity: Dec 28, 1999 → Dec 25, 2023 · 55 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6356179B1 | Inductance device | Electricity | 77 | Expired |
| US7280025B2 | Magnetic element | Emerging Cross-Sectional Technologies | 67 | Expired |
| US7449984B2 | Magnetic element and method of manufacturing magnetic element | Emerging Cross-Sectional Technologies | 27 | Expired |
| USD665740S1 | Coil component | General | 26 | Active |
| US7859377B2 | Coil component | Electricity | 21 | Active |
| US7523542B2 | Method of manufacturing a magnetic element | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD779429S1 | Magnetic component | General | 17 | Active |
| USD693302S1 | Coil component | General | 15 | Active |
| USD920911S1 | Coil component | General | 15 | Active |
| USD830972S1 | Magnetic component | General | 15 | Active |
| USD662054S1 | Coil part | General | 13 | Active |
| US9536653B2 | Coil component, powder-compacted inductor and winding method for coil component | Electricity | 13 | Active |
| US7768374B2 | Inverter transformer and discharge tube drive circuit using the same | Electricity | 12 | Active |
| US8093978B2 | Coil component | Electricity | 12 | Active |
| US7427963B2 | Antenna coil and antenna device | Electricity | 12 | Expired |
| US7183886B2 | Inductance device | Electricity | 11 | Expired |
| US6650218B1 | Inverter transformer | Electricity | 11 | Expired |
| US7463130B2 | Inductance element | Electricity | 10 | Active |
| US7443278B2 | Coil device, composite coil device, and transformer device | Electricity | 10 | Active |
| US8077106B2 | Receiving antenna coil | Electricity | 9 | Active |
| US8207807B2 | Coil | Electricity | 9 | Active |
| US7116204B2 | Leakage transformer | Electricity | 9 | Expired |
| US7071803B2 | Micro surface mount coil unit | Electricity | 9 | Expired |
| US7392581B2 | Method for manufacturing a magnetic element | Emerging Cross-Sectional Technologies | 9 | Active |
| US7940153B2 | Inductance element | Electricity | 9 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.