Split Rock Filter Systems LLC

8 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 2 name spellings.

Ending by 2030

Jan 2038

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 May 5, 2027
The maintenance fee for Diffusiophoretic water filtration device with openable closed channel structure (US 10,463,994) comes due May 5, 2027. Unpaid by Nov 5, 2027, it lapses early.
1 fee due Oct 28, 2027
The maintenance fee for Diffusiophoretic water filtration device, membrane, output splitter and inlet manifold and related methods (US 10,632,401) comes due Oct 28, 2027. Unpaid by Apr 28, 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.

Showing 1 to 8 of 8

Patent	Title	Status	Expires	Confidence
US 10,155,182	Diffusiophoretic Water Filtration Device with Closed Channel Structure In force Term ends Jan 3, 2038 · High confidence	In force	Term ends Jan 3, 2038	High confidence
US 10,463,994	Diffusiophoretic water filtration device with openable closed channel structure In force Term ends Jan 3, 2038 · From the USPTO record	In force	Term ends Jan 3, 2038	From the USPTO record
US 10,632,401	Diffusiophoretic water filtration device, membrane, output splitter and inlet manifold and related methods In force Term ends Jan 3, 2038 · From the USPTO record	In force	Term ends Jan 3, 2038	From the USPTO record
US 10,946,332	Open channel diffusiophoretic water filtration device and method In force Term ends Apr 10, 2038 · From the USPTO record	In force	Term ends Apr 10, 2038	From the USPTO record
US 11,117,078	Portable diffusiophoretic water filtration device and related methods In force Term ends Dec 30, 2038 · From the USPTO record	In force	Term ends Dec 30, 2038	From the USPTO record
US 11,052,331	Diffusiophoretic water filtration device with closed channel structure In force Term ends Jan 15, 2039 · From the USPTO record	In force	Term ends Jan 15, 2039	From the USPTO record
US 10,987,634	Method and device for flushing diffusiophoretic water filter In force Term ends Dec 27, 2039 · From the USPTO record	In force	Term ends Dec 27, 2039	From the USPTO record
US 12,065,368	Method and diffusiophoretic water filter with chemical contaminant removal capability In force Term ends May 28, 2041 · From the USPTO record	In force	Term ends May 28, 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.

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