Drillform Technical Services Ltd.

16 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Feb 2030

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 Dec 4, 2026
The maintenance fee for Spinner wrench for a drilling rig (US 10,309,169) comes due Dec 4, 2026. Unpaid by Jun 4, 2027, it lapses early.
1 fee due May 19, 2027
The maintenance fee for Transitioning pipe handler (US 10,480,264) comes due May 19, 2027. Unpaid by Nov 19, 2027, it lapses early.
1 fee due Jul 21, 2027
The maintenance fee for Floor wrench for a drilling rig (US 10,538,976) comes due Jul 21, 2027. Unpaid by Jan 21, 2028, it lapses early.
1 fee due Aug 11, 2027
The maintenance fee for Spinning torque wrench (US 10,557,321) comes due Aug 11, 2027. Unpaid by Feb 11, 2028, it lapses early.

Which patents, and when each one lapses · Pro

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 8,133,147	Clutch In force Term ends Feb 19, 2030 · From the USPTO record	In force	Term ends Feb 19, 2030	From the USPTO record
US 8,888,649	Dynamic reduction-ratio hoisting device In force Term ends Jun 7, 2031 · From the USPTO record	In force	Term ends Jun 7, 2031	From the USPTO record
US 8,968,133	Dynamic Ratio Speed Increaser for Windmills and Similar Applications In force Term ends Oct 20, 2032 · High confidence	In force	Term ends Oct 20, 2032	High confidence
US 8,943,950	Reciprocating pump flow control In force Term ends Jun 18, 2033 · From the USPTO record	In force	Term ends Jun 18, 2033	From the USPTO record
US 10,538,976	Floor wrench for a drilling rig In force Term ends Mar 21, 2035 · From the USPTO record	In force	Term ends Mar 21, 2035	From the USPTO record
US 10,247,279	Integrated Roller-Gearbox for Spinner Wrench In force Term ends Aug 31, 2035 · High confidence	In force	Term ends Aug 31, 2035	High confidence
US 10,309,169	Spinner wrench for a drilling rig In force Term ends Jan 16, 2036 · From the USPTO record	In force	Term ends Jan 16, 2036	From the USPTO record
US 10,480,264	Transitioning pipe handler In force Term ends Mar 11, 2036 · From the USPTO record	In force	Term ends Mar 11, 2036	From the USPTO record
US 10,557,321	Spinning torque wrench In force Term ends Jul 17, 2036 · From the USPTO record	In force	Term ends Jul 17, 2036	From the USPTO record
US 10,718,171	Modified die block for drilling rig floor wrench In force Term ends Aug 23, 2036 · From the USPTO record	In force	Term ends Aug 23, 2036	From the USPTO record

10 of 16 patents shown.

Pro members see all 16.

Pro members: see all 16 patents

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.

Export every term end as CSV · Pro

Published applications

Every application published under this name has become a patent.