The Patent Finder

Sit S.P.A.

12 patents currently held · Updated Nov 15, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Apr 2032
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 Dec 20, 2026
    The maintenance fee for Water-heating apparatus comprising combustible gas burner, in particular a storage water heater (US 11,680,707) comes due Dec 20, 2026. Unpaid by Jun 21, 2027, it lapses early.
  • 1 fee due Feb 8, 2027
    The maintenance fee for System and method for operational control of a water heater apparatus with a combustible gas burner (US 11,719,437) comes due Feb 8, 2027. Unpaid by Aug 9, 2027, it lapses early.
  • 1 fee due Aug 13, 2027
    The maintenance fee for Valve delivery apparatus (US 11,898,749) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
  • 1 fee due Oct 21, 2027
    The maintenance fee for Electric motor, in particular for fans for combustion air, or for an air/combustion gas mixture, in gas burners, stator assembly for such electric motor, and method of assembly for such stator assembly (US 10,630,119) comes due Oct 21, 2027. Unpaid by Apr 21, 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.
PatentTitleStatus Expires Confidence
US 9,574,772Control and safety circuit for gas delivery valves
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,139,106Method and system for controlling the operation of a burner
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,151,483Method for monitoring and controlling combustion in fuel gas burner apparatus, and combustion control system operating in accordance with said method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,630,119Electric motor, in particular for fans for combustion air, or for an air/combustion gas mixture, in gas burners, stator assembly for such electric motor, and method of assembly for such stator assembly
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,697,633Control system for controlling the pilot flame of a combustible gas device
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,137,137Method for driving a valve for regulating the flow rate of fuel gas towards a burner, in particular for condensation boilers having high power modulation
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,466,853Valve delivery apparatus
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,680,707Water-heating apparatus comprising combustible gas burner, in particular a storage water heater
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,898,749Valve delivery apparatus
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,988,384Device for controlling the supply of a combustible gas to a burner of a heating apparatus
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 12 patents shown.
Pro members see all 12.
Pro members: see all 12 patents
Also on record, not counted in the 12: 5 lapsed for an unpaid fee. 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.

3 pending · 4 no status recorded

List them

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited