Spex Sampleprep, LLC

11 patents currently held · Updated Nov 14, 2026

2 more in force are now held by other companies

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

Recorded under 2 name spellings.

Ending by 2030

Mar 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 Apr 3, 2027
The maintenance fee for Homogenizer and method of grinding large sample quantities (US 11,774,328) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
1 fee due Jun 30, 2027
The maintenance fee for Grinding Mill with Securing Frame (US 10,518,269) comes due Jun 30, 2027. Unpaid by Jan 3, 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 8,061,633	Apparatus for Use in Sample Analysis In force Term ends Mar 6, 2030 · High confidence	In force	Term ends Mar 6, 2030	High confidence
US 8,403,025	Preparation of Inorganic Samples by Fusion In force Term ends Aug 30, 2031 · High confidence	In force	Term ends Aug 30, 2031	High confidence
US 9,781,774	Heating Element and Fusion Furnace Comprising Same In force Term ends Nov 17, 2035 · High confidence	In force	Term ends Nov 17, 2035	High confidence
US 9,709,472	Fluxer Having a Modular Electrically Powered Furnace In force Term ends Apr 18, 2036 · High confidence	In force	Term ends Apr 18, 2036	High confidence
US 10,518,269	Grinding Mill with Securing Frame In force Term ends Mar 21, 2038 · High confidence	In force	Term ends Mar 21, 2038	High confidence
US 11,513,042	Power-Compensated Fusion Furnace In force Term ends Jun 11, 2038 · High confidence	In force	Term ends Jun 11, 2038	High confidence
US 11,524,302	System with Securing Frame In force Term ends Aug 29, 2038 · High confidence	In force	Term ends Aug 29, 2038	High confidence
US 11,460,381	Sample Grinder In force Term ends Oct 2, 2040 · High confidence	In force	Term ends Oct 2, 2040	High confidence
US 11,774,328	Homogenizer and method of grinding large sample quantities In force Term ends Jun 20, 2042 · From the USPTO record	In force	Term ends Jun 20, 2042	From the USPTO record
US 12,415,188	Clamping system, balancing system and methods of use thereof In force Term ends May 23, 2043 · From the USPTO record	In force	Term ends May 23, 2043	From the USPTO record

10 of 11 patents shown.

Pro members see all 11.

Pro members: see all 11 patents

Also on record, not counted in the 11: 2 patents in force now held by others · 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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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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