Aem Technologies Inc.

13 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

May 2028

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 May 10, 2027
The maintenance fee for Processes for Treating Fly Ashes (US 9,181,603) comes due May 10, 2027. Unpaid by Nov 10, 2027, it lapses early.
1 fee due Aug 16, 2027
The maintenance fee for Processes for Recovering Rare Earth Elements from Aluminum-Bearing Materials (US 9,260,767) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
1 fee due Sep 22, 2027
The maintenance fee for Processes for Preparing Titanium Oxide and Various Other Products (US 9,290,828) comes due Sep 22, 2027. Unpaid by Mar 22, 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 8,241,594	Processes for Extracting Aluminum and Iron from Aluminous Ores In force Term ends May 7, 2028 · High confidence	In force	Term ends May 7, 2028	High confidence
US 8,337,789	Processes for Extracting Aluminum from Aluminous Ores In force Term ends May 7, 2028 · High confidence	In force	Term ends May 7, 2028	High confidence
US 9,945,009	Processes for Recovering Rare Earth Elements from Aluminum-Bearing Materials In force Term ends Aug 25, 2032 · High confidence	In force	Term ends Aug 25, 2032	High confidence
US 9,290,828	Processes for Preparing Titanium Oxide and Various Other Products In force Term ends Sep 17, 2032 · High confidence	In force	Term ends Sep 17, 2032	High confidence
US 10,174,402	Processes for Preparing Alumina and Various Other Products In force Term ends Oct 12, 2032 · High confidence	In force	Term ends Oct 12, 2032	High confidence
US 9,260,767	Processes for Recovering Rare Earth Elements from Aluminum-Bearing Materials In force Term ends Oct 31, 2032 · High confidence	In force	Term ends Oct 31, 2032	High confidence
US 9,410,227	Processes for Recovering Rare Earth Elements from Various Ores In force Term ends Nov 10, 2032 · High confidence	In force	Term ends Nov 10, 2032	High confidence
US 9,382,600	Processes for Preparing Alumina and Various Other Products In force Term ends Dec 9, 2032 · High confidence	In force	Term ends Dec 9, 2032	High confidence
US 9,023,301	Processes for Treating Red Mud In force Term ends Jan 10, 2033 · High confidence	In force	Term ends Jan 10, 2033	High confidence
US 9,556,500	Processes for Treating Red Mud In force Term ends Jan 10, 2033 · High confidence	In force	Term ends Jan 10, 2033	High confidence

10 of 13 patents shown.

Pro members see all 13.

Pro members: see all 13 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.

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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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