Hydac Technology GmbH
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 4 name spellings.
11
Ending by 2030
Jul 2027
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.
- 3 fees due Dec 2 to 25, 2026 · next Dec 2
- 2 fees due Feb 6 to 13, 2027 · next Feb 6
- 4 fees due Mar 3 to 15, 2027 · next Mar 3
- 3 fees due Apr 10 to 29, 2027 · next Apr 10
- 2 fees due May 5 to 10, 2027 · next May 5
- 2 fees due Jul 14 to 30, 2027 · next Jul 14
- 3 fees due Sep 8 to 17, 2027 · next Sep 8
- 2 fees due Nov 5 to 12, 2027 · next Nov 5
Recent changes
- 2 of the patents on this record were granted since Aug 17, 2026
- 1 term has ended since Aug 17, 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 7,959,027 | Pressurized container In force · From the USPTO record | In force | From the USPTO record | |
| US 7,891,181 | Hydraulic unit In force · From the USPTO record | In force | From the USPTO record | |
| US 7,857,006 | Pressure accumulator, especially pulsation damper In force · From the USPTO record | In force | From the USPTO record | |
| US 8,176,940 | Pressure accumulator, in particular pulsation damper In force · From the USPTO record | In force | From the USPTO record | |
| US 8,132,645 | Attenuation device particularly pulsation attenuator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,418,726 | Pressure tank, in particular hydraulic accumulator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,443,841 | Guiding device for a metal bellows In force · From the USPTO record | In force | From the USPTO record | |
| US 8,844,575 | Guiding device for metal bellows In force · From the USPTO record | In force | From the USPTO record | |
| US 8,746,286 | Hydraulic accumulator In force · From the USPTO record | In force | From the USPTO record | |
| US 8,875,740 | Hydraulic accumulator, in particular bellows accumulator In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 85: 1 patent in force now held by others · 13 lapsed for an unpaid fee · 34 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.
13 pending · 9 no status recorded