TF IP B.V.

25 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

Jun 2034

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 20, 2026
The maintenance fee for Flame-Resistant Wick (US 11,680,705) comes due Dec 20, 2026. Unpaid by Jun 21, 2027, it lapses early.
1 fee due Jan 2, 2027
The maintenance fee for Wick of Flame Device (US 10,337,730) comes due Jan 2, 2027. Unpaid by Jul 2, 2027, it lapses early.
1 fee due Apr 29, 2027
The maintenance fee for Wick of Flame Device (US 10,458,648) comes due Apr 29, 2027. Unpaid by Oct 29, 2027, it lapses early.
1 fee due Aug 25, 2027
The maintenance fee for Dual Fuel Tank Spiral Flame Combustion Device (US 10,571,118) comes due Aug 25, 2027. Unpaid by Feb 25, 2028, it lapses early.
1 fee due Nov 12, 2027
The maintenance fee for Easy-To-Use Combustion Device (US 10,648,660) comes due Nov 12, 2027. Unpaid by May 12, 2028, 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.

Patent	Title	Status	Expires	Confidence
US 10,458,648	Wick of Flame Device In force Term ends Jun 12, 2034 · High confidence	In force	Term ends Jun 12, 2034	High confidence
US 9,377,187	Adjustable Vortex Flame Device In force Term ends Sep 15, 2034 · High confidence	In force	Term ends Sep 15, 2034	High confidence
US 9,476,586	Modular Wick Holder In force Term ends Dec 19, 2034 · High confidence	In force	Term ends Dec 19, 2034	High confidence
US 9,360,208	Easy Transportable Vortex Type Gas Lamp In force Term ends Apr 7, 2035 · High confidence	In force	Term ends Apr 7, 2035	High confidence
US 9,651,246	Safe Combustion Device In force Term ends Oct 31, 2035 · High confidence	In force	Term ends Oct 31, 2035	High confidence
US 9,885,474	Metallic Wick In force Term ends Jan 6, 2036 · High confidence	In force	Term ends Jan 6, 2036	High confidence
US D909,549	Combustion Burner In force Term ends Feb 2, 2036 · High confidence	In force	Term ends Feb 2, 2036	High confidence
US D909,663	Fuel Container In force Term ends Feb 2, 2036 · High confidence	In force	Term ends Feb 2, 2036	High confidence
US D910,901	Fuel Container In force Term ends Feb 16, 2036 · High confidence	In force	Term ends Feb 16, 2036	High confidence
US 9,816,701	Safe Gas Device Providing More Visible Flames In force Term ends Mar 9, 2036 · High confidence	In force	Term ends Mar 9, 2036	High confidence

10 of 25 patents shown.

Pro members see all 25.

Pro members: see all 25 patents

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.

Export every term end as CSV · Pro