Sundyne, LLC

10 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

Sep 2028

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 Jan 21, 2027
The maintenance fee for Gearbox Output Seal (US 9,086,131) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, 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 10 of 10

Patent	Title	Status	Expires	Confidence
US 7,859,146	End Winding Cooling In force Term ends Sep 22, 2028 · High confidence	In force	Term ends Sep 22, 2028	High confidence
US 7,876,016	Stator Winding Method and Apparatus In force Term ends Jun 12, 2029 · High confidence	In force	Term ends Jun 12, 2029	High confidence
US 8,597,001	Electric Machine with Air Cooling System In force Term ends Jul 6, 2029 · High confidence	In force	Term ends Jul 6, 2029	High confidence
US 8,419,358	Flow Output Nozzle for Centrifugal Pump In force Term ends Oct 24, 2030 · High confidence	In force	Term ends Oct 24, 2030	High confidence
US 9,086,131	Gearbox Output Seal In force Term ends Feb 19, 2033 · High confidence	In force	Term ends Feb 19, 2033	High confidence
US 8,998,582	Flow Vector Control for High Speed Centrifugal Pumps In force Term ends Jul 25, 2033 · High confidence	In force	Term ends Jul 25, 2033	High confidence
US D849,072	Bearing Box Frame In force Term ends May 21, 2034 · High confidence	In force	Term ends May 21, 2034	High confidence
US 10,001,133	Low-Cavitation Impeller and Pump In force Term ends Jul 18, 2036 · High confidence	In force	Term ends Jul 18, 2036	High confidence
US 10,947,987	High Speed Centrifugal Pump Lined Seal Housing In force Term ends Mar 23, 2037 · High confidence	In force	Term ends Mar 23, 2037	High confidence
US 10,670,137	Self Contained Bearing Box Cooling System In force Term ends Nov 15, 2037 · High confidence	In force	Term ends Nov 15, 2037	High confidence

Also on record, not counted in the 10: 4 lapsed for an unpaid fee · 33 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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