Vaztec Engine Venture, 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

May 2030

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 25, 2027
The maintenance fee for Head assembly for an internal combustion engine (US 9,115,606) comes due Feb 25, 2027. Unpaid by Aug 25, 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 D755,248	Rotary valve spring In force Term ends May 3, 2030 · From the USPTO record	In force	Term ends May 3, 2030	From the USPTO record
US D755,249	Rotary valve chamber In force Term ends May 3, 2030 · From the USPTO record	In force	Term ends May 3, 2030	From the USPTO record
US D755,331	Trigger Guard for a Firearm In force Term ends May 3, 2030 · High confidence	In force	Term ends May 3, 2030	High confidence
US D755,356	Seal In force Term ends May 3, 2030 · From the USPTO record	In force	Term ends May 3, 2030	From the USPTO record
US D776,793	Rotary valve In force Term ends Jan 17, 2031 · From the USPTO record	In force	Term ends Jan 17, 2031	From the USPTO record
US 9,115,606	Head assembly for an internal combustion engine In force Term ends Oct 9, 2032 · From the USPTO record	In force	Term ends Oct 9, 2032	From the USPTO record
US 9,903,239	Engine with rotary valve apparatus In force Term ends Apr 19, 2035 · From the USPTO record	In force	Term ends Apr 19, 2035	From the USPTO record
US 9,869,397	Modular rotary valve apparatus In force Term ends Aug 28, 2035 · From the USPTO record	In force	Term ends Aug 28, 2035	From the USPTO record
US 10,677,190	Engine with rotating valve assembly In force Term ends Aug 30, 2038 · From the USPTO record	In force	Term ends Aug 30, 2038	From the USPTO record
US 11,421,563	Head assembly with rotating valves for an internal combustion engine In force Term ends Aug 17, 2041 · From the USPTO record	In force	Term ends Aug 17, 2041	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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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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