Dialight Corporation

70 patents currently held · Updated Nov 15, 2026

11 more in force are now held by other companies

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

Ending by 2030

Dec 2026

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 Jan 4 to 28, 2027 · next Jan 4
1 fee due Apr 15, 2027
The maintenance fee for Diffuser with Uplight (US 10,443,814) comes due Apr 15, 2027. Unpaid by Oct 15, 2027, it lapses early.
2 fees due Jun 19 to 24, 2027 · next Jun 19
3 fees due Aug 9 to 23, 2027 · next Aug 9
1 fee due Oct 26, 2027
The maintenance fee for Automatic Input Impedence Control (US 9,326,342) comes due Oct 26, 2027. Unpaid by Apr 26, 2028, it lapses early.
2 fees due Nov 14, 2027

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 8,066,400	Method and Apparatus for Providing an LED Light for Use in Hazardous Locations In force Term ends Dec 6, 2026 · High confidence	In force	Term ends Dec 6, 2026	High confidence
US 8,480,249	Method and Apparatus for Providing an LED Light for Use in Hazardous Locations In force Term ends Dec 6, 2026 · High confidence	In force	Term ends Dec 6, 2026	High confidence
US 7,586,273	Method and Apparatus for Achieving Perceived Light Mixing via Alternating Different Colored LEDs In force Term ends Jul 2, 2027 · High confidence	In force	Term ends Jul 2, 2027	High confidence
US 8,029,162	Embedded LED Light Source In force Term ends Jul 15, 2027 · High confidence	In force	Term ends Jul 15, 2027	High confidence
US 7,604,380	Apparatus for Using Heat Pipes in Controlling Temperature of an LED Light Unit In force Term ends Dec 20, 2027 · High confidence	In force	Term ends Dec 20, 2027	High confidence
US 7,731,384	Method and Apparatus for Providing an LED Light for Use in Hazardous Locations In force Term ends Feb 3, 2028 · High confidence	In force	Term ends Feb 3, 2028	High confidence
US 7,777,424	Method and Apparatus for Controlling an Input Voltage to a Light Emitting Diode In force Term ends Aug 7, 2028 · High confidence	In force	Term ends Aug 7, 2028	High confidence
US 9,578,716	Apparatus for Using Heat Pipes in Controlling Temperature of an LED Light Unit In force Term ends Nov 7, 2028 · High confidence	In force	Term ends Nov 7, 2028	High confidence
US 7,874,703	Total Internal Reflection Lens with Base In force Term ends Mar 26, 2029 · High confidence	In force	Term ends Mar 26, 2029	High confidence
US 8,231,245	LED Lighting Fixture In force Term ends Apr 15, 2029 · High confidence	In force	Term ends Apr 15, 2029	High confidence

10 of 70 patents shown.

Pro members see all 70.

Pro members: see all 70 patents

Also on record, not counted in the 70: 11 patents in force now held by others · 2 lapsed for an unpaid fee · 53 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.

Export every term end as CSV · Pro

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.

6 no status recorded

List them