Unity Semiconductor Corporation

56 patents currently held · Updated Nov 14, 2026

38 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.

Recorded under 4 name spellings.

Previously recorded as Altatech Semiconductor (to 2017)

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.

3 fees due Dec 2 to 9, 2026 · next Dec 2
1 fee due Feb 1, 2027
The maintenance fee for Method and System for Measuring a Surface of an Object Comprising Different Structures Using Low Coherence Interferometry (US 11,713,960) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
1 fee due Apr 22, 2027
The maintenance fee for Preservation circuit and methods to maintain values representing data in one or more layers of memory (US 10,453,525) comes due Apr 22, 2027. Unpaid by Oct 22, 2027, it lapses early.
1 fee due Jun 19, 2027
The maintenance fee for Vertical cross-point arrays for ultra-high-density memory applications (US 11,849,593) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
1 fee due Jul 7, 2027
The maintenance fee for Vertical Cross-Point Memory Arrays (US 10,529,778) comes due Jul 7, 2027. Unpaid by Jan 7, 2028, it lapses early.
2 fees due Aug 18 to 20, 2027 · next Aug 18
3 fees due Sep 10 to 26, 2027 · next Sep 10
4 fees due Oct 16 to 23, 2027 · next Oct 16

Which patents, and when each one lapses · Pro

Recent changes

5 terms have ended 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 7,379,364	Sensing a signal in a two-terminal memory array having leakage current In force Term ends Dec 21, 2026 · From the USPTO record	In force	Term ends Dec 21, 2026	From the USPTO record
US 8,901,962	Programmable logic device structure using third dimensional memory In force Ends no later than Jan 7, 2028 · From the USPTO record	In force	Ends no later than Jan 7, 2028	From the USPTO record
US 7,812,942	Method for Detecting Surface Defects on a Substrate and Device Using Said Method In force Term ends Apr 26, 2028 · High confidence	In force	Term ends Apr 26, 2028	High confidence
US 9,053,756	Preservation circuit and methods to maintain values representing data in one or more layers of memory In force Ends no later than Jul 31, 2028 · From the USPTO record	In force	Ends no later than Jul 31, 2028	From the USPTO record
US 10,453,525	Preservation circuit and methods to maintain values representing data in one or more layers of memory In force Term ends Jul 31, 2028 · From the USPTO record	In force	Term ends Jul 31, 2028	From the USPTO record
US 7,719,876	Preservation circuit and methods to maintain values representing data in one or more layers of memory In force Term ends Dec 3, 2028 · From the USPTO record	In force	Term ends Dec 3, 2028	From the USPTO record
US 8,848,425	Conductive metal oxide structures in non volatile re-writable memory devices In force Term ends Dec 18, 2029 · From the USPTO record	In force	Term ends Dec 18, 2029	From the USPTO record
US 9,047,928	High Voltage Switching Circuitry for a Cross-Point Array In force Term ends Dec 18, 2029 · High confidence	In force	Term ends Dec 18, 2029	High confidence
US 9,293,702	Conductive metal oxide structures in non-volatile re-writable memory devices In force Ends no later than Dec 18, 2029 · From the USPTO record	In force	Ends no later than Dec 18, 2029	From the USPTO record
US 10,311,950	Conductive metal oxide structures in non-volatile re-writable memory devices In force Ends no later than Dec 18, 2029 · From the USPTO record	In force	Ends no later than Dec 18, 2029	From the USPTO record

10 of 56 patents shown.

Pro members see all 56.

Pro members: see all 56 patents

Also on record, not counted in the 56: 38 patents in force now held by others · 180 lapsed for an unpaid fee · 55 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 abandoned · 43 no status recorded

List them