Elichens

16 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

Dec 2033

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.

2 fees due Jul 23 to 26, 2027 · next Jul 23
1 fee due Sep 5, 2027
The maintenance fee for Compact gas sensor (US 11,921,031) comes due Sep 5, 2027. Unpaid by Mar 6, 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 9,244,207	Optical Frequency Filter and a Detector Including Such a Filter In force Term ends Dec 18, 2033 · High confidence	In force	Term ends Dec 18, 2033	High confidence
US 11,060,972	Method for analysing a gas In force Term ends Sep 1, 2037 · From the USPTO record	In force	Term ends Sep 1, 2037	From the USPTO record
US 10,788,417	Method for estimating the intensity of a wave emitted by an emitting source In force Term ends Feb 13, 2038 · From the USPTO record	In force	Term ends Feb 13, 2038	From the USPTO record
US 11,054,360	Device and method for measuring and tracking the quantity or concentration of a compound in a fluid In force Term ends Apr 20, 2038 · From the USPTO record	In force	Term ends Apr 20, 2038	From the USPTO record
US 11,022,547	Optical gas sensor In force Term ends May 29, 2038 · From the USPTO record	In force	Term ends May 29, 2038	From the USPTO record
US 11,041,801	Method for estimating a quantity of a gaseous species In force Term ends Jun 19, 2038 · From the USPTO record	In force	Term ends Jun 19, 2038	From the USPTO record
US 11,408,877	Optimization of the spatial distribution of air quality measurement means In force Term ends Aug 18, 2038 · From the USPTO record	In force	Term ends Aug 18, 2038	From the USPTO record
US 11,448,590	Method for analysing a gas by means of double illumination In force Term ends Feb 1, 2039 · From the USPTO record	In force	Term ends Feb 1, 2039	From the USPTO record
US 11,467,147	Method for mapping the concentration of an analyte in an environment In force Term ends Jun 28, 2039 · From the USPTO record	In force	Term ends Jun 28, 2039	From the USPTO record
US 11,879,881	Method for calibrating a gas sensor In force Term ends Aug 15, 2040 · From the USPTO record	In force	Term ends Aug 15, 2040	From the USPTO record

10 of 16 patents shown.

Pro members see all 16.

Pro members: see all 16 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.