SCT Ltd.

41 patents currently held · Updated Nov 15, 2026

3 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

Jun 2030

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 Aug 18, 2027
The maintenance fee for Molded Surface Mount Device LED Display Module (US 10,566,508) comes due Aug 18, 2027. Unpaid by Feb 18, 2028, it lapses early.
2 fees due Sep 8 to 15, 2027 · next Sep 8
1 fee due Oct 2, 2027
The maintenance fee for Methods for identifying target slave address for serial communication interface (US 11,947,478) comes due Oct 2, 2027. Unpaid by Apr 3, 2028, it lapses early.
1 fee due Nov 10, 2027
The maintenance fee for Apparatus and Method for Powering LED Driver (US 9,336,704) comes due Nov 10, 2027. Unpaid by May 10, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 17, 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 8,143,794	Low Voltage Light Source Driving Circuit In force Term ends Jun 20, 2030 · High confidence	In force	Term ends Jun 20, 2030	High confidence
US 8,313,700	Fixed and Fluidized Bed Water Gas Shift Reactor Using Syngas from Waste Gasification and Hydrogen Production Method Using the Same In force Term ends Jan 20, 2031 · High confidence	In force	Term ends Jan 20, 2031	High confidence
US 9,089,027	LED Display Systems In force Term ends Jun 27, 2031 · High confidence	In force	Term ends Jun 27, 2031	High confidence
US 8,525,424	Circuitry and Method for Driving LED Display In force Term ends Apr 4, 2032 · High confidence	In force	Term ends Apr 4, 2032	High confidence
US 9,955,542	Apparatus and Method for Driving LED Display Panel In force Term ends Nov 22, 2032 · High confidence	In force	Term ends Nov 22, 2032	High confidence
US 8,963,811	LED Display Systems In force Term ends Dec 13, 2032 · High confidence	In force	Term ends Dec 13, 2032	High confidence
US 9,047,810	Circuits for Eliminating Ghosting Phenomena in Display Panel Having Light Emitters In force Term ends Jan 20, 2033 · High confidence	In force	Term ends Jan 20, 2033	High confidence
US 8,963,810	LED Display Systems In force Term ends Jun 3, 2033 · High confidence	In force	Term ends Jun 3, 2033	High confidence
US 9,058,762	Apparatus and Method for Driving LED Display In force Term ends Nov 18, 2033 · High confidence	In force	Term ends Nov 18, 2033	High confidence
US 9,336,704	Apparatus and Method for Powering LED Driver In force Term ends Jan 31, 2034 · High confidence	In force	Term ends Jan 31, 2034	High confidence

10 of 41 patents shown.

Pro members see all 41.

Pro members: see all 41 patents

Also on record, not counted in the 41: 3 patents in force now held by others · 3 lapsed for an unpaid fee · 1 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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