COSEL CO., LTD.
17Patents
6Active
17Granted
33Portfolio score
Filing activity: May 21, 1999 → Nov 20, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8320145B2 | Switching power source device and drive method thereof | Emerging Cross-Sectional Technologies | 15 | Active |
| US8278896B2 | Switching power supply device | Emerging Cross-Sectional Technologies | 9 | Active |
| USD442913S | Power supply apparatus | General | 9 | Expired |
| US7116562B2 | Synchronous rectification switching power supply | Emerging Cross-Sectional Technologies | 5 | Expired |
| USD432080S | Power supply apparatus | General | 5 | Expired |
| USD427968S | Power supply apparatus | General | 4 | Expired |
| USD429215S | Power supply apparatus | General | 4 | Expired |
| USD428388S | Power supply apparatus | General | 4 | Expired |
| USD429214S | Power supply apparatus | General | 4 | Expired |
| US7208926B2 | Switching signal modulation circuit | Electricity | 3 | Expired |
| USD442914S | Power supply apparatus | General | 3 | Expired |
| USD428851S | Power supply apparatus | General | 3 | Expired |
| USD478309S1 | Power supply apparatus | General | 3 | Expired |
| US9240719B2 | Switching power supply device | Emerging Cross-Sectional Technologies | 1 | Active |
| US10116223B2 | Switching power supply apparatus capable of achieving soft switching operation | Emerging Cross-Sectional Technologies | 0 | Active |
| US8400120B2 | Switching power supply unit | Electricity | 0 | Active |
| US11176800B2 | Power supply device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.