70 patents currently held
10 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 May 2028. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
1
Ending by 2030
May 2028
Next term end
68
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 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. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Nov 2032 · High confidence
Also notable
Ends Aug 2039 · High confidence
Also notable
Ends Mar 2040 · High confidence
Ground Engaging Wear Member and Means of Mechanical Attachment
US 9,371,631
The most cited patent in this portfolio, cited by 58 later US patents, top 10% of utility patents granted in 2016 in our data. Protection runs to 2032.
Rock Bolt with Information Display Region
US 11,428,102
Granted 2022. Computed term ends 2039.
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.
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 May 7 to 28, 2027 · next May 7
- 1 fee due Jun 19, 2027The maintenance fee for Cutting Assembly for a Mining Machine (US 11,846,189) comes due Jun 19, 2027. Unpaid by Dec 20, 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
- 7 of the patents on this record were granted since Aug 16, 2026
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 68 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Rock Bolt with Information Display Region | 2 in force | to Aug 2039 |
| Mesh Clamp | 2 in force | to Apr 2038 |
| Earth Boring Rotary Bit and Method | 1 in force | to Sep 2043 |
| Method for Measuring Vibrations of a Vibration Machine | 1 in force | to Aug 2043 |
| Wear Protection Cap and a Bit Holder Arrangement | 1 in force | to Jul 2043 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,210,278 | Method for Drilling Rock held by Sandvik Mining Construction Oy In force · High confidence | In force | High 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 9,371,631 | Ground Engaging Wear Member and Means of Mechanical Attachment In force · High confidence | In force | High confidence | |
| US 10,155,257 | Feed Drive for a Cold Pilgering Mill In force · High confidence | In force | High confidence | |
| US 9,457,958 | Deflection Device for a Belt Conveyor Comprising an Endless Conveyor Belt In force · High confidence | In force | High confidence | |
| US 9,687,879 | Screen Lining 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 11,299,987 | Heading Machine with Cusp Cutter In force · High confidence | In force | High confidence | |
| US 11,274,551 | Material Handling Apparatus for a Mining Machine 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 |
Also on record, not counted in the 70: 10 patents in force now held by others · 202 patents ended · 75 applications pending · 63 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.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.