Solinst Flute LLC

13 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 Jan 2, 2027
The maintenance fee for Shallow ground water characterization system using flexible borehole liners (US 10,337,314) comes due Jan 2, 2027. Unpaid by Jul 2, 2027, it lapses early.
1 fee due May 12, 2027
The maintenance fee for Method for Removal of Flexible Liners from Boreholes (US 10,472,931) comes due May 12, 2027. Unpaid by Nov 12, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 term has ended since Aug 16, 2026

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 7,753,120	Pore fluid sampling system with diffusion barrier and method of use thereof In force (reinstated) Term ends Apr 15, 2028 · From the USPTO record	In force (reinstated)	Term ends Apr 15, 2028	From the USPTO record
US 7,896,578	Mapping of contaminants in geologic formations In force Term ends Jun 30, 2028 · From the USPTO record	In force	Term ends Jun 30, 2028	From the USPTO record
US 8,176,977	Method for rapid sealing of boreholes In force Term ends May 20, 2030 · From the USPTO record	In force	Term ends May 20, 2030	From the USPTO record
US 8,424,377	Monitoring the water tables in multi-level ground water sampling systems In force Term ends Oct 22, 2031 · From the USPTO record	In force	Term ends Oct 22, 2031	From the USPTO record
US 9,008,971	Measurement of hydraulic head profle in geologic media In force Term ends Sep 11, 2033 · High confidence	In force	Term ends Sep 11, 2033	High confidence
US 9,534,477	Method of installation of flexible borehole liner under artesian conditions In force Term ends Feb 26, 2035 · From the USPTO record	In force	Term ends Feb 26, 2035	From the USPTO record
US 10,472,931	Method for Removal of Flexible Liners from Boreholes In force Term ends Aug 10, 2036 · High confidence	In force	Term ends Aug 10, 2036	High confidence
US 10,337,314	Shallow ground water characterization system using flexible borehole liners In force Term ends Sep 18, 2036 · From the USPTO record	In force	Term ends Sep 18, 2036	From the USPTO record
US 10,139,262	Method for air-coupled water level meter system In force Term ends Oct 15, 2036 · From the USPTO record	In force	Term ends Oct 15, 2036	From the USPTO record
US 10,954,759	Method for increasing pressure in a flexible liner with a weighted wellhead In force Term ends Nov 5, 2039 · From the USPTO record	In force	Term ends Nov 5, 2039	From the USPTO record

10 of 13 patents shown.

Pro members see all 13.

Pro members: see all 13 patents

Also on record, not counted in the 13: 5 lapsed for an unpaid fee · 4 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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