Essex Electronics

10 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

Jul 2027

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 14, 2027.

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 10 of 10

Patent	Title	Status	Expires	Confidence
US D686,931	Proximity sensor In force Term ends Jul 30, 2027 · From the USPTO record	In force	Term ends Jul 30, 2027	From the USPTO record
US D686,932	Proximity sensor In force Term ends Jul 30, 2027 · From the USPTO record	In force	Term ends Jul 30, 2027	From the USPTO record
US D724,588	Smart card RFID reader In force Term ends Mar 17, 2029 · From the USPTO record	In force	Term ends Mar 17, 2029	From the USPTO record
US D738,882	Touchless microwave switch In force Term ends Sep 15, 2029 · From the USPTO record	In force	Term ends Sep 15, 2029	From the USPTO record
US 9,140,757	Testing a Circuit Assembly That Contains a Piezoelectric Switch In force Term ends Apr 10, 2034 · High confidence	In force	Term ends Apr 10, 2034	High confidence
US 10,020,571	Antenna mounting system for metallic structures In force Term ends Jan 5, 2035 · From the USPTO record	In force	Term ends Jan 5, 2035	From the USPTO record
US 11,328,546	Method and apparatus for operating a RFID system In force Term ends Aug 29, 2038 · From the USPTO record	In force	Term ends Aug 29, 2038	From the USPTO record
US 11,995,936	Method and apparatus for operating a RFID system In force Term ends Aug 29, 2038 · From the USPTO record	In force	Term ends Aug 29, 2038	From the USPTO record
US 12,518,583	Method and Apparatus for Operating a RFID System In force Ends no later than Aug 29, 2038 · Low confidence	In force	Ends no later than Aug 29, 2038	Low confidence
US 11,594,089	Touchless motion sensor systems for performing directional detection and for providing access control In force Term ends Oct 1, 2041 · From the USPTO record	In force	Term ends Oct 1, 2041	From the USPTO record

Also on record, not counted in the 10: 1 lapsed for an unpaid fee · 8 ended at full term. 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.

1 no status recorded

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