L & L Engineering, LLC
10 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
6
Ending by 2030
Jan 2027
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
No maintenance fee falls due on this company's record before Nov 14, 2027.
Recent changes
- 2 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
Showing 1 to 8 of 8
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,700,184 | Methods and systems for adaptive control In force · From the USPTO record | In force | From the USPTO record | |
| US 8,154,264 | Method and systems for conduction mode control In force · From the USPTO record | In force | From the USPTO record | |
| US 8,212,543 | Method and systems for conduction mode control In force · From the USPTO record | In force | From the USPTO record | |
| US 8,059,018 | Systems and methods for digital control utilizing oversampling In force · From the USPTO record | In force | From the USPTO record | |
| US 8,014,879 | Methods and systems for adaptive control In force · From the USPTO record | In force | From the USPTO record | |
| US 8,344,716 | Methods and systems for power supply adaptive control utilizing transfer function measurements In force · From the USPTO record | In force | From the USPTO record | |
| US 7,884,591 | Non-linear PWM controller for DC-to-DC converters In force Term ended Nov 10, 2026 · From the USPTO record | In force | Term ended Nov 10, 2026 | From the USPTO record |
| US 7,915,881 | Buck DC-to-DC converter and method In force Ended no later than Nov 10, 2026 · From the USPTO record | In force | Ended no later than Nov 10, 2026 | From the USPTO record |
Also on record, not counted in the 8: 10 patents in force now held by others · 4 lapsed for an unpaid fee. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
Every application published under this name has become a patent.