Transphorm Technology, Inc.

123 patents currently held · Updated Nov 14, 2026

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

Previously recorded as Transphorm Inc. (to 2020)

Ending by 2030

Sep 2027

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 Nov 26, 2026
2 fees due Dec 11 to 16, 2026 · next Dec 11
2 fees due Jan 21 to 28, 2027 · next Jan 21
1 fee due Feb 18, 2027
The maintenance fee for Semiconductor Devices with Field Plates (US 9,111,961) comes due Feb 18, 2027. Unpaid by Aug 18, 2027, it lapses early.
3 fees due Mar 5 to 29, 2027 · next Mar 5
4 fees due Apr 20 to 27, 2027 · next Apr 20
4 fees due May 7 to 24, 2027 · next May 7
4 fees due Jun 8 to 29, 2027 · next Jun 8
3 fees due Jul 14 to 26, 2027 · next Jul 14
1 fee due Aug 9, 2027
The maintenance fee for III-N device structures having a non-insulating substrate (US 9,257,547) comes due Aug 9, 2027. Unpaid by Feb 9, 2028, it lapses early.
2 fees due Sep 22, 2027
4 fees due Oct 19 to 30, 2027 · next Oct 19

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted since Aug 16, 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 8,193,562	Enhancement Mode Gallium Nitride Power Devices In force Term ends Sep 17, 2027 · Medium confidence	In force	Term ends Sep 17, 2027	Medium confidence
US 8,344,424	Enhancement Mode Gallium Nitride Power Devices In force Term ends Sep 17, 2027 · Medium confidence	In force	Term ends Sep 17, 2027	Medium confidence
US 8,633,518	Gallium Nitride Power Devices In force Term ends Sep 17, 2027 · Medium confidence	In force	Term ends Sep 17, 2027	Medium confidence
US 9,343,560	Gallium Nitride Power Devices In force Term ends Sep 17, 2027 · Medium confidence	In force	Term ends Sep 17, 2027	Medium confidence
US 7,939,391	III-Nitride Devices with Recessed Gates In force Term ends Apr 14, 2028 · High confidence	In force	Term ends Apr 14, 2028	High confidence
US 8,841,702	Enhancement Mode III-N Hemts In force Term ends Apr 23, 2028 · High confidence	In force	Term ends Apr 23, 2028	High confidence
US 9,196,716	Enhancement Mode III-N HEMTs In force Term ends Apr 23, 2028 · High confidence	In force	Term ends Apr 23, 2028	High confidence
US 9,437,708	Enhancement Mode III-N HEMTs In force Term ends Apr 23, 2028 · High confidence	In force	Term ends Apr 23, 2028	High confidence
US 9,941,399	Enhancement Mode III-N HEMTs In force Term ends Apr 23, 2028 · High confidence	In force	Term ends Apr 23, 2028	High confidence
US 7,795,642	III-Nitride Devices with Recessed Gates In force Term ends Dec 2, 2028 · High confidence	In force	Term ends Dec 2, 2028	High confidence

10 of 123 patents shown.

Pro members see all 123.

Pro members: see all 123 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

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.

4 pending · 2 no status recorded

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