Alchemy Sciences, Inc.

9 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

Apr 2039

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 Nov 16, 2026
The maintenance fee for Ionic liquid-based products for IOR applications (US 11,649,394) comes due Nov 16, 2026. Unpaid by May 17, 2027, it lapses early.
1 fee due Aug 11, 2027
The maintenance fee for Test method to simulate shale oil recovery (US 10,557,785) comes due Aug 11, 2027. Unpaid by Feb 11, 2028, it lapses early.
1 fee due Sep 19, 2027
The maintenance fee for Particles for carriers and tracers (US 11,932,812) comes due Sep 19, 2027. Unpaid by Mar 20, 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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 10,557,785	Test method to simulate shale oil recovery In force Term ends Apr 8, 2039 · From the USPTO record	In force	Term ends Apr 8, 2039	From the USPTO record
US 11,236,265	Multi-functional surfactant solution for improving hydrocarbon recovery In force Ends no later than Apr 9, 2039 · From the USPTO record	In force	Ends no later than Apr 9, 2039	From the USPTO record
US 10,815,416	Multi-functional surfactant solution for improving hydrocarbon recovery In force Term ends Jul 4, 2039 · From the USPTO record	In force	Term ends Jul 4, 2039	From the USPTO record
US 11,603,746	Method for Selection of Improved Hydrocarbon Recovery Agents for Hydrocarbon Reservoirs In force Term ends Apr 12, 2041 · High confidence	In force	Term ends Apr 12, 2041	High confidence
US 11,486,871	Method for specifying water block removal agents for hydrocarbon reservoirs In force Term ends May 13, 2041 · From the USPTO record	In force	Term ends May 13, 2041	From the USPTO record
US 11,649,394	Ionic liquid-based products for IOR applications In force Term ends Nov 16, 2041 · From the USPTO record	In force	Term ends Nov 16, 2041	From the USPTO record
US 11,932,812	Particles for carriers and tracers In force Term ends Aug 12, 2042 · From the USPTO record	In force	Term ends Aug 12, 2042	From the USPTO record
US 12,359,116	Particles for carriers and tracers In force Term ends Aug 12, 2042 · From the USPTO record	In force	Term ends Aug 12, 2042	From the USPTO record
US 12,129,759	Methodology for Down Selection of Surfactant Formulations In force Term ends Apr 27, 2043 · High confidence	In force	Term ends Apr 27, 2043	High confidence

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 · 3 no status recorded

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