Greenbrier Central, LLC

10 patents currently held · Updated Nov 15, 2026

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

Ending by 2030

Jun 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 Sep 30, 2027
The maintenance fee for Covered hopper railcar for carrying flowable materials (US 10,604,165) comes due Sep 30, 2027. Unpaid by Mar 31, 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 10 of 10

Patent	Title	Status	Expires	Confidence
US 8,122,580	Methods for manufacturing an axle In force Term ends Jun 27, 2030 · From the USPTO record	In force	Term ends Jun 27, 2030	From the USPTO record
US 8,347,911	Vacuum relief valve and method for assembling the same In force Term ends Jan 20, 2031 · From the USPTO record	In force	Term ends Jan 20, 2031	From the USPTO record
US 8,534,204	Hatch assembly for a railcar and method for assembling the same In force Term ends Jul 22, 2031 · From the USPTO record	In force	Term ends Jul 22, 2031	From the USPTO record
US 8,534,203	Support system for a railcar and method for assembling the same In force Term ends Oct 4, 2031 · From the USPTO record	In force	Term ends Oct 4, 2031	From the USPTO record
US 9,789,882	Door sealing assembly for a railcar and method of assembling the same In force Term ends Nov 19, 2034 · From the USPTO record	In force	Term ends Nov 19, 2034	From the USPTO record
US 10,604,165	Covered hopper railcar for carrying flowable materials In force Term ends Jan 14, 2035 · From the USPTO record	In force	Term ends Jan 14, 2035	From the USPTO record
US 9,623,881	Valve interlock systems for use with railcars In force Term ends Nov 7, 2035 · From the USPTO record	In force	Term ends Nov 7, 2035	From the USPTO record
US 9,908,536	Hatch cover for railway cars and method of manufacturing the same In force Term ends Apr 4, 2036 · From the USPTO record	In force	Term ends Apr 4, 2036	From the USPTO record
US 9,862,394	Door and door operating assembly for a railcar and method of assembling the same In force Term ends Apr 29, 2036 · From the USPTO record	In force	Term ends Apr 29, 2036	From the USPTO record
US 10,035,521	Covered hopper railcar for carrying flowable materials In force Term ends Aug 22, 2036 · From the USPTO record	In force	Term ends Aug 22, 2036	From the USPTO record

Also on record, not counted in the 10: 2 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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