Schmidhauser AG
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.
1
Ending by 2030
Nov 2029
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Jan 9, 2027The maintenance fee for Frequency converter (US 10,346,264) comes due Jan 9, 2027. Unpaid by Jul 9, 2027, it lapses early.
- 3 fees due Feb 20, 2027
- 2 fees due Apr 1 to 17, 2027 · next Apr 1
- 1 fee due Oct 21, 2027The maintenance fee for Network feedback unit to feed energy into a three-phase network and electrical drive system (US 10,630,204) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,310,242 | Circuit arrangement and method for insulation monitoring for inverter applications In force · From the USPTO record | In force | From the USPTO record | |
| US 10,389,264 | Power converter In force · From the USPTO record | In force | From the USPTO record | |
| US 10,432,128 | Frequency converter In force · From the USPTO record | In force | From the USPTO record | |
| US 10,346,264 | Frequency converter In force · From the USPTO record | In force | From the USPTO record | |
| US 10,630,204 | Network feedback unit to feed energy into a three-phase network and electrical drive system In force · From the USPTO record | In force | From the USPTO record | |
| US 10,386,426 | Detecting a failure of a phase in a grid for inverters having a frequency detection in an intermediate DC voltage link In force · From the USPTO record | In force | From the USPTO record | |
| US 10,389,304 | System having at least one frequency converter In force · From the USPTO record | In force | From the USPTO record | |
| US 11,374,485 | Filter unit and frequency inverter In force · From the USPTO record | In force | From the USPTO record | |
| US 10,924,032 | Inverter and method for operating an inverter with angle-independent variation of pulse duty factor of switching elements In force · From the USPTO record | In force | From the USPTO record | |
| US 11,146,184 | Frequency converter with drivable switch preventing undesired current flow In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 11: 10 patents in force now held by others · 2 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.