Promethium, 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

Mar 2040

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 Jan 25, 2027
The maintenance fee for Using stored execution plans for efficient execution of natural language questions (US 11,709,827) comes due Jan 25, 2027. Unpaid by Jul 26, 2027, 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 11,360,969	Natural language based processing of data stored across heterogeneous data sources In force Ends no later than Mar 19, 2040 · From the USPTO record	In force	Ends no later than Mar 19, 2040	From the USPTO record
US 11,074,252	Using stored execution plans for efficient execution of natural language questions In force Term ends Mar 20, 2040 · From the USPTO record	In force	Term ends Mar 20, 2040	From the USPTO record
US 11,409,735	Selective preprocessing of data stored across heterogeneous data sources In force Term ends Apr 7, 2040 · From the USPTO record	In force	Term ends Apr 7, 2040	From the USPTO record
US 12,093,250	Processing natural language questions based on data stored across heterogeneous data sources In force Term ends Apr 12, 2040 · From the USPTO record	In force	Term ends Apr 12, 2040	From the USPTO record
US 11,709,827	Using stored execution plans for efficient execution of natural language questions In force Term ends Aug 1, 2040 · From the USPTO record	In force	Term ends Aug 1, 2040	From the USPTO record
US 11,609,903	Ranking Data Assets for Processing Natural Language Questions Based on Data Stored Across Heterogeneous Data Sources In force Ends no later than Aug 4, 2040 · Medium confidence	In force	Ends no later than Aug 4, 2040	Medium confidence
US 11,623,018	Photoactivated semiconductor photocatalytic air purification In force Term ends Nov 18, 2040 · From the USPTO record	In force	Term ends Nov 18, 2040	From the USPTO record
US 11,612,673	Photoactivated semiconductor photocatalytic air purification In force Term ends Aug 19, 2041 · From the USPTO record	In force	Term ends Aug 19, 2041	From the USPTO record
US 12,314,373	Modifying data pipeline based on services executing across multiple trusted domains In force Term ends Apr 1, 2043 · From the USPTO record	In force	Term ends Apr 1, 2043	From the USPTO record
US 12,380,199	Executing Services Across Multiple Trusted Domains for Data Analysis In force Term ends Jun 6, 2043 · High confidence	In force	Term ends Jun 6, 2043	High confidence

10 of 13 patents shown.

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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

Every application published under this name has become a patent.