18 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Aug 2032. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Aug 2032
Next term end
18
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 Aug 2032 · High confidence
Also notable
Ends May 2036 · High confidence
Also notable
Ends Apr 2036 · High confidence
System for Thermally Processing Lumpy Solid Material
US 9,121,640
Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2032.
Apparatus and Method for Producing and Analyzing a Plurality of Sample Materials
US 10,352,885
The newest of the three, granted 2019. It anchors the portfolio to 2036, later than anything else here.
Method and System for the Thermal Treatment of Dispersible Raw Material
US 10,370,293
The newest of the three, granted 2019. It anchors the portfolio to 2036, 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.
- 1 fee due Jan 16, 2027The maintenance fee for Apparatus and Method for Producing and Analyzing a Plurality of Sample Materials (US 10,352,885) comes due Jan 16, 2027. Unpaid by Jul 16, 2027, it lapses early.
- 1 fee due Feb 6, 2027The maintenance fee for Method and System for the Thermal Treatment of Dispersible Raw Material (US 10,370,293) comes due Feb 6, 2027. Unpaid by Aug 6, 2027, it lapses early.
- 1 fee due Mar 1, 2027The maintenance fee for System for Thermally Processing Lumpy Solid Material (US 9,121,640) comes due Mar 1, 2027. Unpaid by Sep 1, 2027, it lapses early.
- 1 fee due Oct 28, 2027The maintenance fee for Classifying Device for Classifying a Granular Material Flow (US 10,632,503) comes due Oct 28, 2027. Unpaid by Apr 28, 2028, it lapses early.
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
- 4 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 18 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method and Device for Producing Cement Clinker | 1 in force | to Jul 2043 |
| Method and Device for the Production of Cement Clinker | 1 in force | to Mar 2043 |
| System and Method for Thermally Treatment of Air-Dispersible Raw Material | 1 in force | to Jan 2043 |
| Device and Method for the Thermal Treatment of a Mineral Feedstock | 1 in force | to Oct 2042 |
| Installation for the Thermal Treatment of Dispersible Raw Material, and Method for Operating Such an Installation | 1 in force | to Aug 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,121,640 | System for Thermally Processing Lumpy Solid Material In force · High confidence | In force | High confidence | |
| US 10,370,293 | Method and System for the Thermal Treatment of Dispersible Raw Material In force · High confidence | In force | High confidence | |
| US 10,352,885 | Apparatus and Method for Producing and Analyzing a Plurality of Sample Materials In force · High confidence | In force | High confidence | |
| US 10,632,503 | Classifying Device for Classifying a Granular Material Flow In force · High confidence | In force | High confidence | |
| US 11,549,752 | Cooler for Cooling Hot Bulk Material and Method for Preventing Grate Riddlings in a Cooler In force · High confidence | In force | High confidence | |
| US 12,123,650 | Cooler and a Method for Cooling Bulk Material In force · High confidence | In force | High confidence | |
| US 12,018,890 | Kiln Comprising a Protective Segment at the Kiln Outlet In force · High confidence | In force | High confidence | |
| US 12,005,459 | Method and Facility for Producing Material Containing Hydrated Cement In force · High confidence | In force | High confidence | |
| US 12,222,163 | Cooler for Cooling Bulk Material In force · High confidence | In force | High confidence | |
| US 12,123,862 | Method for Handling Melt Samples in a Steelworks Laboratory, and Steelworks Laboratory In force · High confidence | In force | High confidence |
Also on record, not counted in the 18: 8 patents ended · 33 applications pending · 3 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.