32 patents currently held
4 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.
The next term ends in Mar 2032. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Mar 2032
Next term end
31
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Mar 2040 · High confidence
Also notable
Ends Apr 2038 · High confidence
Also notable
Ends May 2039 · High confidence
Drill String Rod
US 11,808,086
The newest of the three, granted 2023. It anchors the portfolio to 2040, later than anything else here.
Mesh Clamp
US D982,428
The newest of the three, granted 2023. It anchors the portfolio to 2038, later than anything else here.
Coupling for Connecting Downhole Tubulars
US 11,598,159
The newest of the three, granted 2023. It anchors the portfolio to 2039, later than anything else here.
Formerly held, still cited
Notable
Ends Aug 2039 · High confidence
The earliest of the three still in force, granted 2022 and renewed since. Its term ends first, in 2039.
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 May 7, 2027The maintenance fee for Drill String Rod (US 11,808,086) comes due May 7, 2027. Unpaid by Nov 8, 2027, it lapses early.
- 1 fee due Aug 13, 2027The maintenance fee for Method of Treating a Mining Insert (US 11,898,213) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
- 2 fees due Sep 19, 2027
Recent changes
- 2 of the patents on this record were granted since Aug 17, 2026
What they patent
The 5 largest of its 31 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Mesh Clamp | 2 in force | to Apr 2038 |
| Earth Boring Rotary Bit and Method | 1 in force | to Sep 2043 |
| Sub-Assembly, Rock Drilling Rig, and Method of Absorbing Vibrations in Drilling | 1 in force | to Dec 2042 |
| Coated Cutting Tool | 1 in force | to Nov 2042 |
| Method of Treating a Cemented Carbide Mining Insert | 1 in force | to Oct 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,689,907 | Patterned Texturing of the Seal Surface for a Roller Cone Rock Bit In force · High confidence | In force | High confidence | |
| US D949,676 | Mesh Clamp held by Sandvik Mining and Construction Australia Pty Ltd. and Sandvik Mining and Construction Tools AB In force · High confidence | In force | High confidence | |
| US D982,428 | Mesh Clamp held by Sandvik Mining and Construction Australia Pty Ltd. and Sandvik Mining and Construction Tools AB In force · High confidence | In force | High confidence | |
| US 11,598,159 | Coupling for Connecting Downhole Tubulars In force · High confidence | In force | High confidence | |
| US 12,098,447 | Rock Drill Insert In force · High confidence | In force | High confidence | |
| US 11,933,175 | Rock Bolt with Information Display Region In force · High confidence | In force | High confidence | |
| US 11,808,086 | Drill String Rod In force · High confidence | In force | High confidence | |
| US 12,188,306 | Drill String Joint Design In force · High confidence | In force | High confidence | |
| US 12,006,771 | Down-The-Hole Hammer Drill Bit Assembly In force · High confidence | In force | High confidence | |
| US 12,098,599 | Shoulder Protected Drilling Assembly In force · High confidence | In force | High confidence |
Also on record, not counted in the 32: 4 patents in force now held by others · 7 patents ended · 16 applications pending · 6 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.