Amtek Semiconductor Co., Ltd.

8 patents currently held · Updated Nov 14, 2026

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

Recorded under 2 name spellings.

Ending by 2030

Oct 2031

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 Mar 1, 2027
The maintenance fee for Auto calibration driver IC and its application motor driver system (US 9,124,199) comes due Mar 1, 2027. Unpaid by Sep 1, 2027, it lapses early.
1 fee due Aug 2, 2027
The maintenance fee for Heat dissipating device (US 9,252,074) comes due Aug 2, 2027. Unpaid by Feb 2, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 term has 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.

Showing 1 to 8 of 8

Patent	Title	Status	Expires	Confidence
US 8,432,111	Pulse amplitude modulation method for the DC brushless motor In force Term ends Oct 19, 2031 · From the USPTO record	In force	Term ends Oct 19, 2031	From the USPTO record
US 8,488,320	Semiconductor package having a cooling fan and method of fabricating the same In force Term ends Jan 17, 2032 · From the USPTO record	In force	Term ends Jan 17, 2032	From the USPTO record
US 8,482,231	Motor driving apparatus having adjustable slope of motor speed In force Term ends Mar 29, 2032 · From the USPTO record	In force	Term ends Mar 29, 2032	From the USPTO record
US 9,390,959	Semiconductor package with stator set formed by circuits In force Term ends Apr 11, 2033 · From the USPTO record	In force	Term ends Apr 11, 2033	From the USPTO record
US 9,679,826	Method for fabricating semiconductor package with stator set formed by circuits In force Term ends Apr 11, 2033 · From the USPTO record	In force	Term ends Apr 11, 2033	From the USPTO record
US 9,252,074	Heat dissipating device In force Term ends Sep 1, 2033 · From the USPTO record	In force	Term ends Sep 1, 2033	From the USPTO record
US 9,124,199	Auto calibration driver IC and its application motor driver system In force Term ends Apr 22, 2034 · From the USPTO record	In force	Term ends Apr 22, 2034	From the USPTO record
US 9,716,398	Auto correction driving device and wireless charger driving system using the same In force Term ends Mar 3, 2036 · From the USPTO record	In force	Term ends Mar 3, 2036	From the USPTO record

Also on record, not counted in the 8: 5 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.

Export every term end as CSV · Pro

Published applications

Every application published under this name has become a patent.