Turbocell, LLC.

10 patents currently held · Updated Nov 15, 2026

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

Ending by 2030

Mar 2029

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 9, 2026
The maintenance fee for Ceramic-to-metal turbine shaft attachment (US 9,051,873) comes due Dec 9, 2026. Unpaid by Jun 9, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 8,590,653	Regenerative braking for gas turbine systems In force Term ends Mar 17, 2029 · From the USPTO record	In force	Term ends Mar 17, 2029	From the USPTO record
US 8,215,437	Regenerative braking for gas turbine systems In force Term ends Nov 14, 2029 · From the USPTO record	In force	Term ends Nov 14, 2029	From the USPTO record
US 8,708,083	Gas turbine energy storage and conversion system In force Term ends May 11, 2030 · From the USPTO record	In force	Term ends May 11, 2030	From the USPTO record
US 8,499,874	Gas turbine energy storage and conversion system In force Term ends Jan 6, 2031 · From the USPTO record	In force	Term ends Jan 6, 2031	From the USPTO record
US 8,669,670	Gas turbine engine configurations In force Term ends Jul 4, 2032 · From the USPTO record	In force	Term ends Jul 4, 2032	From the USPTO record
US 8,866,334	Dispatchable power from a renewable energy facility In force Term ends Feb 10, 2033 · From the USPTO record	In force	Term ends Feb 10, 2033	From the USPTO record
US 9,051,873	Ceramic-to-metal turbine shaft attachment In force Term ends Dec 24, 2033 · From the USPTO record	In force	Term ends Dec 24, 2033	From the USPTO record
US 8,984,895	Metallic ceramic spool for a gas turbine engine In force Term ends Jan 4, 2034 · From the USPTO record	In force	Term ends Jan 4, 2034	From the USPTO record
US 10,844,734	Ceramic turbine volute In force Term ends May 9, 2036 · From the USPTO record	In force	Term ends May 9, 2036	From the USPTO record
US 10,094,288	Ceramic-to-metal turbine volute attachment for a gas turbine engine In force Term ends Feb 18, 2037 · From the USPTO record	In force	Term ends Feb 18, 2037	From the USPTO record

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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