Westerman, Inc.

9 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

Nov 2031

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 Jun 30, 2027
The maintenance fee for Inlet Diverter (US 10,518,195) 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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 8,465,572	Horizontal Heater Treater In force (reinstated) Term ends Nov 29, 2031 · High confidence	In force (reinstated)	Term ends Nov 29, 2031	High confidence
US 8,470,080	High Pressure Separator In force (reinstated) Term ends Feb 22, 2032 · High confidence	In force (reinstated)	Term ends Feb 22, 2032	High confidence
US 9,643,105	Inlet Diverter In force Term ends Dec 1, 2036 · High confidence	In force	Term ends Dec 1, 2036	High confidence
US 9,724,624	Inlet Diverter In force Ends no later than Dec 1, 2036 · Medium confidence	In force	Ends no later than Dec 1, 2036	Medium confidence
US 10,518,195	Inlet Diverter In force Term ends Dec 1, 2036 · Medium confidence	In force	Term ends Dec 1, 2036	Medium confidence
US 11,148,072	Inlet Diverter In force Term ends Dec 1, 2036 · Medium confidence	In force	Term ends Dec 1, 2036	Medium confidence
US 11,274,540	Heated Separation Assembly In force Term ends Sep 7, 2039 · High confidence	In force	Term ends Sep 7, 2039	High confidence
US 11,274,539	Heated Separation Assembly In force Term ends Apr 28, 2040 · High confidence	In force	Term ends Apr 28, 2040	High confidence
US 11,268,361	Separation Assembly In force Term ends May 11, 2040 · High confidence	In force	Term ends May 11, 2040	High confidence

Also on record, not counted in the 9: 1 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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