Sinopower Semiconductor, Inc.

9 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

Mar 2031

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 9 of 9

Patent	Title	Status	Expires	Confidence
US 8,217,454	Semiconductor device In force Term ends Mar 27, 2031 · From the USPTO record	In force	Term ends Mar 27, 2031	From the USPTO record
US 8,334,566	Semiconductor power device having shielding electrode for improving breakdown voltage In force Term ends Apr 21, 2031 · From the USPTO record	In force	Term ends Apr 21, 2031	From the USPTO record
US 8,709,895	Manufacturing method power semiconductor device In force Term ends Dec 10, 2031 · From the USPTO record	In force	Term ends Dec 10, 2031	From the USPTO record
US 8,860,134	Trench power device and manufacturing method thereof In force Term ends Sep 3, 2033 · From the USPTO record	In force	Term ends Sep 3, 2033	From the USPTO record
US 8,963,235	Trench power device and semiconductor structure thereof In force Term ends Oct 25, 2033 · From the USPTO record	In force	Term ends Oct 25, 2033	From the USPTO record
US 9,722,071	Trench power transistor In force Term ends Jan 25, 2036 · From the USPTO record	In force	Term ends Jan 25, 2036	From the USPTO record
US 9,991,378	Trench power semiconductor device In force Term ends Jun 20, 2036 · From the USPTO record	In force	Term ends Jun 20, 2036	From the USPTO record
US 10,128,368	Double gate trench power transistor and manufacturing method thereof In force Term ends Aug 21, 2036 · From the USPTO record	In force	Term ends Aug 21, 2036	From the USPTO record
US 9,799,743	Trenched power semiconductor element In force Term ends Nov 22, 2036 · From the USPTO record	In force	Term ends Nov 22, 2036	From the USPTO record

Also on record, not counted in the 9: 11 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.

1 no status recorded

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