H2 PowerTech, LLC

9 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

Aug 2039

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 Feb 1, 2027
The maintenance fee for Membrane-Based Hydrogen Purifiers (US 11,712,655) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
1 fee due May 28, 2027
The maintenance fee for Hydrogen-producing fuel cell systems and methods of operating hydrogen-producing fuel cell systems for backup power operations (US 11,831,051) comes due May 28, 2027. Unpaid by Nov 29, 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 9 of 9

Patent	Title	Status	Expires	Confidence
US 11,177,494	Systems and methods for forming a liquid mixture having a predetermined mix ratio and reforming systems, reforming methods, fuel cell systems, and fuel cell methods that utilize the liquid mixture In force Term ends Aug 4, 2039 · From the USPTO record	In force	Term ends Aug 4, 2039	From the USPTO record
US 11,999,621	Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ In force Term ends Oct 23, 2040 · From the USPTO record	In force	Term ends Oct 23, 2040	From the USPTO record
US 12,275,638	Systems and methods for increasing the hydrogen permeance of hydrogen separation membranes in situ In force Term ends Oct 23, 2040 · From the USPTO record	In force	Term ends Oct 23, 2040	From the USPTO record
US 12,226,732	Membrane-based hydrogen purifiers In force Term ends Nov 30, 2040 · From the USPTO record	In force	Term ends Nov 30, 2040	From the USPTO record
US 11,316,180	Hydrogen-producing fuel cell systems and methods of operating hydrogen-producing fuel cell systems for backup power operations In force Term ends May 18, 2041 · From the USPTO record	In force	Term ends May 18, 2041	From the USPTO record
US 11,831,051	Hydrogen-producing fuel cell systems and methods of operating hydrogen-producing fuel cell systems for backup power operations In force Ends no later than May 18, 2041 · From the USPTO record	In force	Ends no later than May 18, 2041	From the USPTO record
US 11,618,676	Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ In force Term ends Jun 18, 2041 · From the USPTO record	In force	Term ends Jun 18, 2041	From the USPTO record
US 11,712,655	Membrane-Based Hydrogen Purifiers In force Term ends Nov 12, 2041 · High confidence	In force	Term ends Nov 12, 2041	High confidence
US 12,283,727	Hydrogen-Producing Fuel Cell Systems and Methods of Operating the Same In force Term ends Jul 20, 2043 · High confidence	In force	Term ends Jul 20, 2043	High confidence

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

Every application published under this name has become a patent.