Energyield LLC

9 patents currently held · Updated Nov 14, 2026

1 more in force is now held by another company

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

Recorded under 2 name spellings.

Ending by 2030

May 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.

1 fee due Dec 16, 2026
The maintenance fee for Enhanced efficiency turbine (US 9,059,440) comes due Dec 16, 2026. Unpaid by Jun 16, 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 9 of 9

Patent	Title	Status	Expires	Confidence
US 9,297,264	Rotatable Blade Apparatus with Individually Adjustable Blades In force Ends no later than May 9, 2027 · Medium confidence	In force	Ends no later than May 9, 2027	Medium confidence
US 10,190,572	Rotatable Blade Apparatus with Individually Adjustable Blades In force Term ends Jun 16, 2027 · High confidence	In force	Term ends Jun 16, 2027	High confidence
US 7,818,969	Enhanced efficiency turbine In force Term ends Dec 18, 2029 · From the USPTO record	In force	Term ends Dec 18, 2029	From the USPTO record
US 8,047,006	Enhanced efficiency turbine 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 8,608,441	Rotatable blade apparatus with individually adjustable blades In force Term ends Feb 3, 2031 · High confidence	In force	Term ends Feb 3, 2031	High confidence
US 9,059,440	Enhanced efficiency turbine In force Term ends Feb 11, 2032 · From the USPTO record	In force	Term ends Feb 11, 2032	From the USPTO record
US 9,913,321	Energy harvesting container In force Term ends Sep 1, 2035 · From the USPTO record	In force	Term ends Sep 1, 2035	From the USPTO record
US 11,444,302	Vortex tube reformer for hydrogen production, separation, and integrated use In force Term ends Mar 23, 2036 · From the USPTO record	In force	Term ends Mar 23, 2036	From the USPTO record
US 9,843,062	Vortex tube reformer for hydrogen production, separation, and integrated use In force Term ends Jul 20, 2036 · From the USPTO record	In force	Term ends Jul 20, 2036	From the USPTO record

Also on record, not counted in the 9: 1 patent in force now held by others · 6 lapsed for an unpaid fee · 3 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 abandoned

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