Pyrotek, Inc.

55 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

Apr 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 Feb 27, 2027
The maintenance fee for Apparatus for refining molten aluminum alloys (US 10,393,439) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
1 fee due Mar 17, 2027
The maintenance fee for Overflow molten metal transfer pump with gas and flux injection (US 10,415,884) comes due Mar 17, 2027. Unpaid by Sep 17, 2027, it lapses early.
2 fees due Apr 6 to 24, 2027 · next Apr 6
3 fees due Jul 12 to 16, 2027 · next Jul 12
2 fees due Sep 1 to 26, 2027 · next Sep 1

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.

Patent	Title	Status	Expires	Confidence
US 8,178,036	Impeller for dispersing gas into molten metal In force Term ends Apr 13, 2028 · From the USPTO record	In force	Term ends Apr 13, 2028	From the USPTO record
US 8,187,528	Molten metal post assembly In force Term ends Oct 6, 2028 · From the USPTO record	In force	Term ends Oct 6, 2028	From the USPTO record
US 7,988,763	Use of a binary salt flux of NaCl and MgCl2 for the purification of aluminium or aluminium alloys, and method thereof In force Term ends Jun 8, 2029 · From the USPTO record	In force	Term ends Jun 8, 2029	From the USPTO record
US 9,151,331	Heat break coupling In force Term ends Dec 5, 2029 · From the USPTO record	In force	Term ends Dec 5, 2029	From the USPTO record
US 9,127,332	Molten aluminum refining and gas dispersion system In force Term ends Dec 19, 2029 · High confidence	In force	Term ends Dec 19, 2029	High confidence
US 9,095,896	Heated Molten Metal Handling Device In force Ends no later than Dec 29, 2029 · Medium confidence	In force	Ends no later than Dec 29, 2029	Medium confidence
US 11,939,993	Overflow vortex transfer system In force Ends no later than Jun 15, 2030 · From the USPTO record	In force	Ends no later than Jun 15, 2030	From the USPTO record
US 9,234,520	Riserless transfer pump and mixer/pre-melter for molten metal applications In force Ends no later than Apr 9, 2032 · From the USPTO record	In force	Ends no later than Apr 9, 2032	From the USPTO record
US 9,506,346	Overflow vortex transfer system In force Term ends Jul 5, 2032 · From the USPTO record	In force	Term ends Jul 5, 2032	From the USPTO record
US 10,718,336	Mold pump assembly In force Term ends Jul 30, 2032 · From the USPTO record	In force	Term ends Jul 30, 2032	From the USPTO record

10 of 55 patents shown.

Pro members see all 55.

Pro members: see all 55 patents

Also on record, not counted in the 55: 30 lapsed for an unpaid fee · 39 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.

8 pending · 1 abandoned · 12 no status recorded

List them