Flender GmbH
8 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.
Recorded under 2 name spellings.
4
Ending by 2030
Feb 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 Nov 30, 2026The maintenance fee for Holding apparatus for a slip ring unit, slip ring bridge, slip ring unit, electric machine, and wind turbine (US 11,664,709) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
- 3 fees due Dec 4 to 11, 2026 · next Dec 4
- 3 fees due Jan 4 to 28, 2027 · next Jan 4
- 5 fees due Feb 6 to 25, 2027 · next Feb 6
- 3 fees due Mar 3 to 24, 2027 · next Mar 3
- 5 fees due Apr 3 to 24, 2027 · next Apr 3
- 1 fee due May 24, 2027The maintenance fee for Annular rotor for an electric machine (US 9,197,116) comes due May 24, 2027. Unpaid by Nov 24, 2027, it lapses early.
- 2 fees due Jun 10 to 26, 2027 · next Jun 10
- 2 fees due Jul 16 to 30, 2027 · next Jul 16
- 5 fees due Aug 4 to 27, 2027 · next Aug 4
- 4 fees due Sep 1 to 26, 2027 · next Sep 1
- 2 fees due Oct 14 to 16, 2027 · next Oct 14
- 1 fee due Nov 12, 2027The maintenance fee for Planetary gear with improved planet gear carrier support (US 10,648,542) comes due Nov 12, 2027. Unpaid by May 12, 2028, it lapses early.
Recent changes
- 3 of the patents on this record were granted since Aug 16, 2026
- 4 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,555,747 | Air cooled gear housing In force · From the USPTO record | In force | From the USPTO record | |
| US 8,174,160 | Group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine In force · From the USPTO record | In force | From the USPTO record | |
| US 8,093,777 | Group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine In force · From the USPTO record | In force | From the USPTO record | |
| US D769,952 | Gear In force · From the USPTO record | In force | From the USPTO record | |
| US 9,106,109 | Generator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,591,371 | Planetary gear mechanism for a wind power plant In force · From the USPTO record | In force | From the USPTO record | |
| US 9,276,446 | Active part of an electrical machine having inclined coils in the winding head area In force · From the USPTO record | In force | From the USPTO record | |
| US 8,591,368 | Drive system for a wind turbine In force · From the USPTO record | In force | From the USPTO record | |
| US 9,091,327 | Device system for a wind turbine In force · From the USPTO record | In force | From the USPTO record | |
| US 9,197,116 | Annular rotor for an electric machine In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 132: 8 patents in force now held by others · 46 lapsed for an unpaid fee · 9 ended at full term. 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
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
4 pending · 9 no status recorded