Hydra Systems As
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jan 2032
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 28, 2026The maintenance fee for Method for isolation of a permeable zone in a subterranean well (US 10,301,904) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
- 1 fee due Dec 27, 2026The maintenance fee for Behind Casing Wash and Cement (US 11,686,175) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
- 1 fee due Jul 23, 2027The maintenance fee for Behind Casing Cementing Tool (US 11,879,305) comes due Jul 23, 2027. Unpaid by Jan 24, 2028, it lapses early.
Recent changes
- 2 of the patents on this record were granted 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 9,010,425 | Method for Combined Cleaning and Plugging in a Well, a Washing Tool for Directional Washing in a Well, and Uses Thereof In force · High confidence | In force | High confidence | |
| US 9,702,216 | Method for establishment of an annulus barrier in a subterranean well In force · From the USPTO record | In force | From the USPTO record | |
| US 9,670,730 | Method of providing mechanical stability around an entrance of a new well path to be formed from an existing well In force · From the USPTO record | In force | From the USPTO record | |
| US 9,695,671 | Method and system for plugging a well and use of explosive charges in plugging wells In force · From the USPTO record | In force | From the USPTO record | |
| US 10,260,311 | Method for Combined Cleaning and Plugging in a Well and Flushing Tool for Flushing in a Well In force · High confidence | In force | High confidence | |
| US 10,301,904 | Method for isolation of a permeable zone in a subterranean well In force · From the USPTO record | In force | From the USPTO record | |
| US 9,909,378 | Method for downhole cutting of at least one line disposed outside and along a pipe string in a well, and without simultaneously severing the pipe string In force · From the USPTO record | In force | From the USPTO record | |
| US 10,180,043 | Method for establishment of a new well path from an existing well In force · From the USPTO record | In force | From the USPTO record | |
| US 12,196,062 | Behind Casing Wash and Cement In force · High confidence | In force | High confidence | |
| US 12,742,370 | Behind Casing Wash and Cement In force · High confidence | In force | High confidence |
Also on record, not counted in the 19: 1 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
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.
2 no status recorded