Spirax-Sarco Limited
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
1
Ending by 2030
Jun 2027
Next term end
When these terms end
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 Feb 13, 2027The maintenance fee for Condensate drain (US 10,378,693) comes due Feb 13, 2027. Unpaid by Aug 13, 2027, it lapses early.
- 1 fee due Apr 13, 2027The maintenance fee for Apparatus and method for monitoring a steam plant (US 9,157,829) comes due Apr 13, 2027. Unpaid by Oct 13, 2027, it lapses early.
- 1 fee due May 24, 2027The maintenance fee for Method and apparatus for determining the phase compositions of a multiphase fluid flow (US 9,194,730) comes due May 24, 2027. Unpaid by Nov 24, 2027, it lapses early.
- 1 fee due Jul 2, 2027The maintenance fee for Differential pressure metering apparatus for a flow restrictor pipe section (US 11,860,010) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.
Recent changes
- 1 term has ended since Aug 17, 2026
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 7,520,731 | Gas pressure driven pump having dual pump mechanisms In force · From the USPTO record | In force | From the USPTO record | |
| US 8,918,293 | Flow Meter In force · High confidence | In force | High confidence | |
| US 9,157,829 | Apparatus and method for monitoring a steam plant In force · From the USPTO record | In force | From the USPTO record | |
| US 8,966,995 | Flow Meter In force · High confidence | In force | High confidence | |
| US 9,194,730 | Method and apparatus for determining the phase compositions of a multiphase fluid flow In force · From the USPTO record | In force | From the USPTO record | |
| US 9,588,083 | Determining the phase compositions of a multiphase fluid flow In force · From the USPTO record | In force | From the USPTO record | |
| US 9,888,809 | Steam oven installation In force · From the USPTO record | In force | From the USPTO record | |
| US 9,863,836 | Monitoring apparatus for a steam plant and a method of operating such an apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 9,765,927 | Flange fitting In force · From the USPTO record | In force | From the USPTO record | |
| US 10,378,693 | Condensate drain In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 15: 12 lapsed for an unpaid fee · 40 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.
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 pending · 6 no status recorded