Akwel

14 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Previously recorded as Akwel S.A. (to 2019)

Ending by 2030

Oct 2031

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 Dec 13, 2026
The maintenance fee for Acoustic resonator (US 11,674,481) comes due Dec 13, 2026. Unpaid by Jun 14, 2027, it lapses early.
2 fees due May 5 to 19, 2027 · next May 5

Which patents, and when each one lapses · Pro

Recent changes

1 term has ended since Aug 16, 2026

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 8,899,214	Exhaust gas recirculation device for an internal combustion engine In force Term ends Oct 27, 2031 · From the USPTO record	In force	Term ends Oct 27, 2031	From the USPTO record
US 9,345,998	Method and device for the decantation of oil contained in a gas stream In force Term ends Jan 18, 2033 · From the USPTO record	In force	Term ends Jan 18, 2033	From the USPTO record
US 9,939,340	Pressure and temperature determining device and pressure and temperature sensor comprising such a device In force Term ends Jul 17, 2035 · From the USPTO record	In force	Term ends Jul 17, 2035	From the USPTO record
US 10,175,137	Pressure Measurement Device and Braking System Comprising Such Pressure Measurement Device In force Term ends Sep 16, 2036 · High confidence	In force	Term ends Sep 16, 2036	High confidence
US 10,481,011	Temperature probe In force Term ends Jun 23, 2037 · From the USPTO record	In force	Term ends Jun 23, 2037	From the USPTO record
US 10,464,698	Filling head for filling a tank with a liquid In force Term ends Dec 2, 2037 · From the USPTO record	In force	Term ends Dec 2, 2037	From the USPTO record
US 10,753,258	Corrosive fluid heater, tank and manufacturing method In force Term ends Jan 30, 2038 · From the USPTO record	In force	Term ends Jan 30, 2038	From the USPTO record
US 11,493,160	Instantaneous connection device In force Term ends Mar 27, 2040 · From the USPTO record	In force	Term ends Mar 27, 2040	From the USPTO record
US 11,422,038	System for measuring the temperature of a fluid circulating in a duct In force Term ends Jun 25, 2040 · From the USPTO record	In force	Term ends Jun 25, 2040	From the USPTO record
US 11,674,481	Acoustic resonator In force Term ends Nov 17, 2040 · From the USPTO record	In force	Term ends Nov 17, 2040	From the USPTO record

10 of 14 patents shown.

Pro members see all 14.

Pro members: see all 14 patents

Also on record, not counted in the 14: 20 lapsed for an unpaid fee. List them

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.

3 pending · 3 no status recorded

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