Lambda Electronics
Records under this name other than patents Lambda Electronics holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,744,647 | Parallel connected converters apparatus and methods using switching cycle with energy holding state Term ended Term ended Apr 12, 2022 · From the USPTO record | Term ended | Term ended Apr 12, 2022 | From the USPTO record |
| US 6,703,817 | Pulse width modulated power conversion apparatus and methods using capacitor-charge feedback Term ended Term ended Mar 31, 2022 · From the USPTO record | Term ended | Term ended Mar 31, 2022 | From the USPTO record |
| US 6,606,259 | Clamped-inductance power converter apparatus with transient current limiting capability and operating methods therefor Term ended Term ended Oct 4, 2021 · From the USPTO record | Term ended | Term ended Oct 4, 2021 | From the USPTO record |
| US 6,442,047 | Power conversion apparatus and methods with reduced current and voltage switching Lapsed on the fee record Ended Aug 27, 2014 · From the USPTO record | Lapsed on the fee record | Ended Aug 27, 2014 | From the USPTO record |
| US 6,961,253 | Drive circuits for synchronous rectifiers Lapsed on the fee record Ended Nov 1, 2009 · From the USPTO record | Lapsed on the fee record | Ended Nov 1, 2009 | From the USPTO record |
| US 6,289,580 | Surface mount power supply device Lapsed on the fee record Ended Sep 18, 2009 · From the USPTO record | Lapsed on the fee record | Ended Sep 18, 2009 | From the USPTO record |
| US 6,225,862 | Series resonant circuit with inherent short circuit protection Lapsed on the fee record Ended May 1, 2009 · From the USPTO record | Lapsed on the fee record | Ended May 1, 2009 | From the USPTO record |
| US 6,201,706 | "Power supply device with externally disconnectable ""Y"" capacitors" Lapsed on the fee record Ended Mar 13, 2009 · From the USPTO record | Lapsed on the fee record | Ended Mar 13, 2009 | From the USPTO record |
| US 4,985,821 | Indirect current sensing of DC to DC converters Term ended Term ended no later than Jan 15, 2011 · Low confidence | Term ended | Term ended no later than Jan 15, 2011 | Low confidence |
| US 5,014,182 | High frequency self-oscillating inverter with negligible switching losses Term ended Term ended no later than May 7, 2011 · Low confidence | Term ended | Term ended no later than May 7, 2011 | Low confidence |