Deltavalve, LLC

19 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

Oct 2027

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 Dec 13, 2026
The maintenance fee for Automated Line Blind (US 11,674,602) comes due Dec 13, 2026. Unpaid by Jun 14, 2027, it lapses early.
1 fee due Nov 10, 2027
The maintenance fee for Flushing System for Use in Delayed Coking Systems (US 9,334,447) comes due Nov 10, 2027. Unpaid by May 10, 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 7,819,009	Vibration Monitoring System In force Term ends Oct 12, 2027 · High confidence	In force	Term ends Oct 12, 2027	High confidence
US 8,679,298	Remotely Controlled Decoking Tool Used in Coke Cutting Operations In force Term ends May 16, 2028 · High confidence	In force	Term ends May 16, 2028	High confidence
US 8,440,057	Linked Coke Drum Support In force Term ends Aug 29, 2028 · High confidence	In force	Term ends Aug 29, 2028	High confidence
US 7,871,500	Coke Drum Skirt In force Term ends Mar 27, 2029 · High confidence	In force	Term ends Mar 27, 2029	High confidence
US 7,931,044	Valve Body and Condensate Holding Tank Flushing Systems and Methods In force Term ends Sep 1, 2029 · High confidence	In force	Term ends Sep 1, 2029	High confidence
US 9,486,762	Center Feed System Employing Removable Inserts in a Retractable Injection Nozzle In force Term ends May 30, 2030 · High confidence	In force	Term ends May 30, 2030	High confidence
US 8,702,911	Center Feed System In force Term ends Jul 21, 2030 · High confidence	In force	Term ends Jul 21, 2030	High confidence
US 8,545,680	Center Feed System In force Term ends Nov 9, 2030 · High confidence	In force	Term ends Nov 9, 2030	High confidence
US 8,459,608	Seat and Valve Systems for Use in Delayed Coker System In force Term ends Apr 18, 2031 · High confidence	In force	Term ends Apr 18, 2031	High confidence
US 8,851,451	Non-Rising Electric Actuated Valve Operator In force Term ends Apr 22, 2031 · High confidence	In force	Term ends Apr 22, 2031	High confidence

10 of 19 patents shown.

Pro members see all 19.

Pro members: see all 19 patents

Also on record, not counted in the 19: 5 lapsed for an unpaid fee · 17 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.

3 pending

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