The Patent Finder

Cummins Generator Technologies Limited

46 patents currently held · Updated Nov 15, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
8
Ending by 2030
Dec 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 Nov 21, 2026
    The maintenance fee for Separator for separating windings (US 10,298,081) comes due Nov 21, 2026. Unpaid by May 21, 2027, it lapses early.
  • 1 fee due Feb 8, 2027
    The maintenance fee for Component for a power generation system (US 11,722,031) comes due Feb 8, 2027. Unpaid by Aug 9, 2027, it lapses early.
  • 2 fees due Apr 1 to 3, 2027 · next Apr 1
  • 1 fee due May 5, 2027
    The maintenance fee for Rotor for a rotating electrical machine (US 10,468,929) comes due May 5, 2027. Unpaid by Nov 5, 2027, it lapses early.

Which patents, and when each one lapses · Pro

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.
PatentTitleStatus Expires Confidence
US D696,628Motor generator
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,843,175Method and apparatus for controlling excitation
In force
 · From the USPTO record
In forceFrom the USPTO record
US D713,339Motor generator
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,118,627Propulsion arrangement
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,008,795Power generation system, wind turbine, and a method of controlling the wind turbine for supplying power to an electrical grid
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,278,883Load angle measurement and pole slip detection
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,120,222Rotating electrical machine
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,923,643Separator for separating windings
In force
 · From the USPTO record
In forceFrom the USPTO record
US D797,048Generator adaptor
In force
 · From the USPTO record
In forceFrom the USPTO record
US D799,431Terminal box
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 46 patents shown.
Pro members see all 46.
Pro members: see all 46 patents
Also on record, not counted in the 46: 11 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.

3 pending · 7 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