D-Tech UK Ltd.

9 patents currently held · Updated Nov 14, 2026

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.

Ending by 2030

Jan 2029

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 16, 2026
The maintenance fee for Push the Bit Rotary Steerable System (US 11,649,680) comes due Nov 16, 2026. Unpaid by May 17, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was 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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 7,849,936	Steerable Rotary Directional Drilling Tool for Drilling Boreholes In force Term ends Jan 3, 2029 · High confidence	In force	Term ends Jan 3, 2029	High confidence
US 9,624,727	Rotary Bit Pushing System In force Term ends Feb 18, 2036 · High confidence	In force	Term ends Feb 18, 2036	High confidence
US 11,649,680	Push the Bit Rotary Steerable System In force Term ends Feb 18, 2036 · Medium confidence	In force	Term ends Feb 18, 2036	Medium confidence
US 12,116,894	Push the Bit Rotary Steerable System In force Term ends Feb 18, 2036 · Medium confidence	In force	Term ends Feb 18, 2036	Medium confidence
US 12,435,573	Push the Bit Rotary Steerable System In force Term ends Feb 18, 2036 · Medium confidence	In force	Term ends Feb 18, 2036	Medium confidence
US 12,704,023	Push the Bit Rotary Steerable System In force Term ends Feb 18, 2036 · Medium confidence	In force	Term ends Feb 18, 2036	Medium confidence
US 11,028,645	Push the Bit Rotary Steerable System In force Term ends Mar 22, 2036 · Medium confidence	In force	Term ends Mar 22, 2036	Medium confidence
US 12,139,975	Hydrostatically-Actuatable Systems and Related Methods In force Term ends Dec 18, 2040 · High confidence	In force	Term ends Dec 18, 2040	High confidence
US 12,774,641	Pressure Wave-Based Steering and Communication Systems In force Term ends Mar 26, 2042 · High confidence	In force	Term ends Mar 26, 2042	High confidence

Also on record, not counted in the 9: 1 patent in force now held by others. 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.

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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.

1 pending

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